WIP

The way these functions interpret their arguments is inconsistent with
Excel in a few ways:

- EmptyCell: Excel ignores arguments evaluating to these types of
  values, treating them as if they didn't exist.

- Text: Text cells are ignored unless they are "TRUE" or "FALSE" (case
  insensitive). EXCEPT if the string value comes from a reference, in
  which case it is always ignored regardless of its value.

- Error if no args: Excel returns a #VALUE! error for these functions if
  no arguments are provided, or if all arguments are ignored (see
  above).

- EmptyArg: Bizarrely, Unlike EmptyCell, EmptyArg is not ignored and is
  treated as if it were FALSE by Excel.

- ErrorPropagation: Excel propagates errors in the arguments and in
  cells belonging to any Range arguments.

Additionally, these functions are not consistent with each other, XOR,
OR, AND vary in how they handle the cases mentioned above.

Rectify these consistency issues by re-implementing them all in terms of
a single base function which is more consistent with Excel behavior.

.github/workflows/test-coverage.yaml

@@ -17,8 +17,9 @@ jobs:
       - name: Generate code coverage
         run: cargo llvm-cov --all-features --workspace --exclude pyroncalc --exclude wasm --lcov --output-path lcov.info
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v5
+        env:
+          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
         with:
-          token: ${{ secrets.CODECOV_TOKEN }}
           files: lcov.info
           fail_ci_if_error: true

base/src/calc_result.rs

@@ -2,6 +2,7 @@ use std::cmp::Ordering;
 
 use crate::expressions::{token::Error, types::CellReferenceIndex};
 
+#[derive(Clone)]
 pub struct Range {
     pub left: CellReferenceIndex,
     pub right: CellReferenceIndex,

base/src/expressions/parser/mod.rs

@@ -164,7 +164,9 @@ pub enum Node {
         args: Vec<Node>,
     },
     ArrayKind(Vec<Node>),
-    VariableKind(String),
+    DefinedNameKind((String, Option<u32>)),
+    TableNameKind(String),
+    WrongVariableKind(String),
     CompareKind {
         kind: OpCompare,
         left: Box<Node>,
@@ -187,12 +189,17 @@ pub enum Node {
 pub struct Parser {
     lexer: lexer::Lexer,
     worksheets: Vec<String>,
-    context: Option<CellReferenceRC>,
+    defined_names: Vec<(String, Option<u32>)>,
+    context: CellReferenceRC,
     tables: HashMap<String, Table>,
 }
 
 impl Parser {
-    pub fn new(worksheets: Vec<String>, tables: HashMap<String, Table>) -> Parser {
+    pub fn new(
+        worksheets: Vec<String>,
+        defined_names: Vec<(String, Option<u32>)>,
+        tables: HashMap<String, Table>,
+    ) -> Parser {
         let lexer = lexer::Lexer::new(
             "",
             lexer::LexerMode::A1,
@@ -201,10 +208,16 @@ impl Parser {
             #[allow(clippy::expect_used)]
             get_language("en").expect(""),
         );
+        let context = CellReferenceRC {
+            sheet: worksheets.first().map_or("", |v| v).to_string(),
+            column: 1,
+            row: 1,
+        };
         Parser {
             lexer,
             worksheets,
-            context: None,
+            defined_names,
+            context,
             tables,
         }
     }
@@ -212,13 +225,18 @@ impl Parser {
         self.lexer.set_lexer_mode(mode)
     }
 
-    pub fn set_worksheets(&mut self, worksheets: Vec<String>) {
+    pub fn set_worksheets_and_names(
+        &mut self,
+        worksheets: Vec<String>,
+        defined_names: Vec<(String, Option<u32>)>,
+    ) {
         self.worksheets = worksheets;
+        self.defined_names = defined_names;
     }
 
-    pub fn parse(&mut self, formula: &str, context: &Option<CellReferenceRC>) -> Node {
+    pub fn parse(&mut self, formula: &str, context: &CellReferenceRC) -> Node {
         self.lexer.set_formula(formula);
-        self.context.clone_from(context);
+        self.context = context.clone();
         self.parse_expr()
     }
 
@@ -232,6 +250,24 @@ impl Parser {
         None
     }
 
+    // Returns:
+    //  * None: If there is no defined name by that name
+    //  * Some(Some(index)): If there is a defined name local to that sheet
+    //  * Some(None): If there is a global defined name
+    fn get_defined_name(&self, name: &str, sheet: u32) -> Option<Option<u32>> {
+        for (df_name, df_scope) in &self.defined_names {
+            if name.to_lowercase() == df_name.to_lowercase() && df_scope == &Some(sheet) {
+                return Some(*df_scope);
+            }
+        }
+        for (df_name, df_scope) in &self.defined_names {
+            if name.to_lowercase() == df_name.to_lowercase() && df_scope.is_none() {
+                return Some(None);
+            }
+        }
+        None
+    }
+
     fn parse_expr(&mut self) -> Node {
         let mut t = self.parse_concat();
         if let Node::ParseErrorKind { .. } = t {
@@ -446,16 +482,7 @@ impl Parser {
                 absolute_column,
                 absolute_row,
             } => {
-                let context = match &self.context {
-                    Some(c) => c,
-                    None => {
-                        return Node::ParseErrorKind {
-                            formula: self.lexer.get_formula(),
-                            position: self.lexer.get_position() as usize,
-                            message: "Expected context for the reference".to_string(),
-                        }
-                    }
-                };
+                let context = &self.context;
                 let sheet_index = match &sheet {
                     Some(name) => self.get_sheet_index_by_name(name),
                     None => self.get_sheet_index_by_name(&context.sheet),
@@ -490,16 +517,7 @@ impl Parser {
                 }
             }
             TokenType::Range { sheet, left, right } => {
-                let context = match &self.context {
-                    Some(c) => c,
-                    None => {
-                        return Node::ParseErrorKind {
-                            formula: self.lexer.get_formula(),
-                            position: self.lexer.get_position() as usize,
-                            message: "Expected context for the reference".to_string(),
-                        }
-                    }
-                };
+                let context = &self.context;
                 let sheet_index = match &sheet {
                     Some(name) => self.get_sheet_index_by_name(name),
                     None => self.get_sheet_index_by_name(&context.sheet),
@@ -585,11 +603,33 @@ impl Parser {
                             kind: function_kind,
                             args,
                         };
-                    } else {
-                        return Node::InvalidFunctionKind { name, args };
+                    }
+                    return Node::InvalidFunctionKind { name, args };
+                }
+                let context = &self.context;
+
+                let context_sheet_index = match self.get_sheet_index_by_name(&context.sheet) {
+                    Some(i) => i,
+                    None => {
+                        return Node::ParseErrorKind {
+                            formula: self.lexer.get_formula(),
+                            position: 0,
+                            message: "sheet not found".to_string(),
+                        };
+                    }
+                };
+
+                // Could be a defined name or a table
+                if let Some(scope) = self.get_defined_name(&name, context_sheet_index) {
+                    return Node::DefinedNameKind((name, scope));
+                }
+                let name_lower = name.to_lowercase();
+                for table_name in self.tables.keys() {
+                    if table_name.to_lowercase() == name_lower {
+                        return Node::TableNameKind(name);
                     }
                 }
-                Node::VariableKind(name)
+                Node::WrongVariableKind(name)
             }
             TokenType::Error(kind) => Node::ErrorKind(kind),
             TokenType::Illegal(error) => Node::ParseErrorKind {
@@ -661,187 +701,177 @@ impl Parser {
                 // We will try to convert to a normal reference
                 // table_name[column_name] => cell1:cell2
                 // table_name[[#This Row], [column_name]:[column_name]] => cell1:cell2
-                if let Some(context) = &self.context {
-                    let context_sheet_index = match self.get_sheet_index_by_name(&context.sheet) {
-                        Some(i) => i,
-                        None => {
-                            return Node::ParseErrorKind {
-                                formula: self.lexer.get_formula(),
-                                position: 0,
-                                message: "sheet not found".to_string(),
-                            };
-                        }
-                    };
-                    // table-name => table
-                    let table = match self.tables.get(&table_name) {
-                        Some(t) => t,
-                        None => {
-                            let message = format!(
-                                "Table not found: '{table_name}' at '{}!{}{}'",
-                                context.sheet,
-                                number_to_column(context.column)
-                                    .unwrap_or(format!("{}", context.column)),
-                                context.row
-                            );
-                            return Node::ParseErrorKind {
-                                formula: self.lexer.get_formula(),
-                                position: 0,
-                                message,
-                            };
-                        }
-                    };
-                    let table_sheet_index = match self.get_sheet_index_by_name(&table.sheet_name) {
-                        Some(i) => i,
-                        None => {
-                            return Node::ParseErrorKind {
-                                formula: self.lexer.get_formula(),
-                                position: 0,
-                                message: "sheet not found".to_string(),
-                            };
-                        }
-                    };
+                let context = &self.context;
+                let context_sheet_index = match self.get_sheet_index_by_name(&context.sheet) {
+                    Some(i) => i,
+                    None => {
+                        return Node::ParseErrorKind {
+                            formula: self.lexer.get_formula(),
+                            position: 0,
+                            message: "sheet not found".to_string(),
+                        };
+                    }
+                };
+                // table-name => table
+                let table = match self.tables.get(&table_name) {
+                    Some(t) => t,
+                    None => {
+                        let message = format!(
+                            "Table not found: '{table_name}' at '{}!{}{}'",
+                            context.sheet,
+                            number_to_column(context.column)
+                                .unwrap_or(format!("{}", context.column)),
+                            context.row
+                        );
+                        return Node::ParseErrorKind {
+                            formula: self.lexer.get_formula(),
+                            position: 0,
+                            message,
+                        };
+                    }
+                };
+                let table_sheet_index = match self.get_sheet_index_by_name(&table.sheet_name) {
+                    Some(i) => i,
+                    None => {
+                        return Node::ParseErrorKind {
+                            formula: self.lexer.get_formula(),
+                            position: 0,
+                            message: "sheet not found".to_string(),
+                        };
+                    }
+                };
 
-                    let sheet_name = if table_sheet_index == context_sheet_index {
-                        None
-                    } else {
-                        Some(table.sheet_name.clone())
-                    };
+                let sheet_name = if table_sheet_index == context_sheet_index {
+                    None
+                } else {
+                    Some(table.sheet_name.clone())
+                };
 
-                    // context must be with tables.reference
-                    #[allow(clippy::expect_used)]
-                    let (column_start, mut row_start, column_end, mut row_end) =
-                        parse_range(&table.reference).expect("Failed parsing range");
+                // context must be with tables.reference
+                #[allow(clippy::expect_used)]
+                let (column_start, mut row_start, column_end, mut row_end) =
+                    parse_range(&table.reference).expect("Failed parsing range");
 
-                    let totals_row_count = table.totals_row_count as i32;
-                    let header_row_count = table.header_row_count as i32;
-                    row_end -= totals_row_count;
+                let totals_row_count = table.totals_row_count as i32;
+                let header_row_count = table.header_row_count as i32;
+                row_end -= totals_row_count;
 
-                    match specifier {
-                        Some(token::TableSpecifier::ThisRow) => {
-                            row_start = context.row;
-                            row_end = context.row;
-                        }
-                        Some(token::TableSpecifier::Totals) => {
-                            if totals_row_count != 0 {
-                                row_start = row_end + 1;
-                                row_end = row_start;
-                            } else {
-                                // Table1[#Totals] is #REF! if Table1 does not have totals
-                                return Node::ErrorKind(token::Error::REF);
-                            }
-                        }
-                        Some(token::TableSpecifier::Headers) => {
+                match specifier {
+                    Some(token::TableSpecifier::ThisRow) => {
+                        row_start = context.row;
+                        row_end = context.row;
+                    }
+                    Some(token::TableSpecifier::Totals) => {
+                        if totals_row_count != 0 {
+                            row_start = row_end + 1;
                             row_end = row_start;
-                        }
-                        Some(token::TableSpecifier::Data) => {
-                            row_start += header_row_count;
-                        }
-                        Some(token::TableSpecifier::All) => {
-                            if totals_row_count != 0 {
-                                row_end += 1;
-                            }
-                        }
-                        None => {
-                            // skip the headers
-                            row_start += header_row_count;
+                        } else {
+                            // Table1[#Totals] is #REF! if Table1 does not have totals
+                            return Node::ErrorKind(token::Error::REF);
                         }
                     }
-                    match table_reference {
-                        None => {
-                            return Node::RangeKind {
-                                sheet_name,
-                                sheet_index: table_sheet_index,
-                                absolute_row1: true,
-                                absolute_column1: true,
-                                row1: row_start,
-                                column1: column_start,
-                                absolute_row2: true,
-                                absolute_column2: true,
-                                row2: row_end,
-                                column2: column_end,
-                            };
-                        }
-                        Some(TableReference::ColumnReference(s)) => {
-                            let column_index = match get_table_column_by_name(&s, table) {
-                                Some(s) => s + column_start,
-                                None => {
-                                    return Node::ParseErrorKind {
-                                        formula: self.lexer.get_formula(),
-                                        position: self.lexer.get_position() as usize,
-                                        message: format!(
-                                            "Expecting column: {s} in table {table_name}"
-                                        ),
-                                    };
-                                }
-                            };
-                            if row_start == row_end {
-                                return Node::ReferenceKind {
-                                    sheet_name,
-                                    sheet_index: table_sheet_index,
-                                    absolute_row: true,
-                                    absolute_column: true,
-                                    row: row_start,
-                                    column: column_index,
-                                };
-                            }
-                            return Node::RangeKind {
-                                sheet_name,
-                                sheet_index: table_sheet_index,
-                                absolute_row1: true,
-                                absolute_column1: true,
-                                row1: row_start,
-                                column1: column_index,
-                                absolute_row2: true,
-                                absolute_column2: true,
-                                row2: row_end,
-                                column2: column_index,
-                            };
-                        }
-                        Some(TableReference::RangeReference((left, right))) => {
-                            let left_column_index = match get_table_column_by_name(&left, table) {
-                                Some(f) => f + column_start,
-                                None => {
-                                    return Node::ParseErrorKind {
-                                        formula: self.lexer.get_formula(),
-                                        position: self.lexer.get_position() as usize,
-                                        message: format!(
-                                            "Expecting column: {left} in table {table_name}"
-                                        ),
-                                    };
-                                }
-                            };
-
-                            let right_column_index = match get_table_column_by_name(&right, table) {
-                                Some(f) => f + column_start,
-                                None => {
-                                    return Node::ParseErrorKind {
-                                        formula: self.lexer.get_formula(),
-                                        position: self.lexer.get_position() as usize,
-                                        message: format!(
-                                            "Expecting column: {right} in table {table_name}"
-                                        ),
-                                    };
-                                }
-                            };
-                            return Node::RangeKind {
-                                sheet_name,
-                                sheet_index: table_sheet_index,
-                                absolute_row1: true,
-                                absolute_column1: true,
-                                row1: row_start,
-                                column1: left_column_index,
-                                absolute_row2: true,
-                                absolute_column2: true,
-                                row2: row_end,
-                                column2: right_column_index,
-                            };
+                    Some(token::TableSpecifier::Headers) => {
+                        row_end = row_start;
+                    }
+                    Some(token::TableSpecifier::Data) => {
+                        row_start += header_row_count;
+                    }
+                    Some(token::TableSpecifier::All) => {
+                        if totals_row_count != 0 {
+                            row_end += 1;
                         }
                     }
+                    None => {
+                        // skip the headers
+                        row_start += header_row_count;
+                    }
                 }
-                Node::ParseErrorKind {
-                    formula: self.lexer.get_formula(),
-                    position: 0,
-                    message: "Structured references not supported in R1C1 mode".to_string(),
+                match table_reference {
+                    None => Node::RangeKind {
+                        sheet_name,
+                        sheet_index: table_sheet_index,
+                        absolute_row1: true,
+                        absolute_column1: true,
+                        row1: row_start,
+                        column1: column_start,
+                        absolute_row2: true,
+                        absolute_column2: true,
+                        row2: row_end,
+                        column2: column_end,
+                    },
+                    Some(TableReference::ColumnReference(s)) => {
+                        let column_index = match get_table_column_by_name(&s, table) {
+                            Some(s) => s + column_start,
+                            None => {
+                                return Node::ParseErrorKind {
+                                    formula: self.lexer.get_formula(),
+                                    position: self.lexer.get_position() as usize,
+                                    message: format!("Expecting column: {s} in table {table_name}"),
+                                };
+                            }
+                        };
+                        if row_start == row_end {
+                            return Node::ReferenceKind {
+                                sheet_name,
+                                sheet_index: table_sheet_index,
+                                absolute_row: true,
+                                absolute_column: true,
+                                row: row_start,
+                                column: column_index,
+                            };
+                        }
+                        Node::RangeKind {
+                            sheet_name,
+                            sheet_index: table_sheet_index,
+                            absolute_row1: true,
+                            absolute_column1: true,
+                            row1: row_start,
+                            column1: column_index,
+                            absolute_row2: true,
+                            absolute_column2: true,
+                            row2: row_end,
+                            column2: column_index,
+                        }
+                    }
+                    Some(TableReference::RangeReference((left, right))) => {
+                        let left_column_index = match get_table_column_by_name(&left, table) {
+                            Some(f) => f + column_start,
+                            None => {
+                                return Node::ParseErrorKind {
+                                    formula: self.lexer.get_formula(),
+                                    position: self.lexer.get_position() as usize,
+                                    message: format!(
+                                        "Expecting column: {left} in table {table_name}"
+                                    ),
+                                };
+                            }
+                        };
+
+                        let right_column_index = match get_table_column_by_name(&right, table) {
+                            Some(f) => f + column_start,
+                            None => {
+                                return Node::ParseErrorKind {
+                                    formula: self.lexer.get_formula(),
+                                    position: self.lexer.get_position() as usize,
+                                    message: format!(
+                                        "Expecting column: {right} in table {table_name}"
+                                    ),
+                                };
+                            }
+                        };
+                        Node::RangeKind {
+                            sheet_name,
+                            sheet_index: table_sheet_index,
+                            absolute_row1: true,
+                            absolute_column1: true,
+                            row1: row_start,
+                            column1: left_column_index,
+                            absolute_row2: true,
+                            absolute_column2: true,
+                            row2: row_end,
+                            column2: right_column_index,
+                        }
+                    }
                 }
             }
         }

base/src/expressions/parser/move_formula.rs

@@ -375,7 +375,9 @@ fn to_string_moved(node: &Node, move_context: &MoveContext) -> String {
             }
             format!("{{{}}}", arguments)
         }
-        VariableKind(value) => value.to_string(),
+        DefinedNameKind((name, _)) => name.to_string(),
+        TableNameKind(name) => name.to_string(),
+        WrongVariableKind(name) => name.to_string(),
         CompareKind { kind, left, right } => format!(
             "{}{}{}",
             to_string_moved(left, move_context),

base/src/expressions/parser/stringify.rs

@@ -464,7 +464,9 @@ fn stringify(
                 | ReferenceKind { .. }
                 | RangeKind { .. }
                 | WrongReferenceKind { .. }
-                | VariableKind(_)
+                | DefinedNameKind(_)
+                | TableNameKind(_)
+                | WrongVariableKind(_)
                 | WrongRangeKind { .. } => {
                     stringify(left, context, displace_data, use_original_name)
                 }
@@ -492,7 +494,9 @@ fn stringify(
                 | ReferenceKind { .. }
                 | RangeKind { .. }
                 | WrongReferenceKind { .. }
-                | VariableKind(_)
+                | DefinedNameKind(_)
+                | TableNameKind(_)
+                | WrongVariableKind(_)
                 | WrongRangeKind { .. } => {
                     stringify(right, context, displace_data, use_original_name)
                 }
@@ -543,7 +547,9 @@ fn stringify(
             }
             format!("{{{}}}", arguments)
         }
-        VariableKind(value) => value.to_string(),
+        TableNameKind(value) => value.to_string(),
+        DefinedNameKind((name, _)) => name.to_string(),
+        WrongVariableKind(name) => name.to_string(),
         UnaryKind { kind, right } => match kind {
             OpUnary::Minus => {
                 format!(
@@ -660,7 +666,90 @@ pub(crate) fn rename_sheet_in_node(node: &mut Node, sheet_index: u32, new_name:
         Node::ErrorKind(_) => {}
         Node::ParseErrorKind { .. } => {}
         Node::ArrayKind(_) => {}
-        Node::VariableKind(_) => {}
+        Node::DefinedNameKind(_) => {}
+        Node::TableNameKind(_) => {}
+        Node::WrongVariableKind(_) => {}
         Node::EmptyArgKind => {}
     }
 }
+
+pub(crate) fn rename_defined_name_in_node(
+    node: &mut Node,
+    name: &str,
+    scope: Option<u32>,
+    new_name: &str,
+) {
+    match node {
+        // Rename
+        Node::DefinedNameKind((n, s)) => {
+            if name.to_lowercase() == n.to_lowercase() && *s == scope {
+                *n = new_name.to_string();
+            }
+        }
+        // Go next level
+        Node::OpRangeKind { left, right } => {
+            rename_defined_name_in_node(left, name, scope, new_name);
+            rename_defined_name_in_node(right, name, scope, new_name);
+        }
+        Node::OpConcatenateKind { left, right } => {
+            rename_defined_name_in_node(left, name, scope, new_name);
+            rename_defined_name_in_node(right, name, scope, new_name);
+        }
+        Node::OpSumKind {
+            kind: _,
+            left,
+            right,
+        } => {
+            rename_defined_name_in_node(left, name, scope, new_name);
+            rename_defined_name_in_node(right, name, scope, new_name);
+        }
+        Node::OpProductKind {
+            kind: _,
+            left,
+            right,
+        } => {
+            rename_defined_name_in_node(left, name, scope, new_name);
+            rename_defined_name_in_node(right, name, scope, new_name);
+        }
+        Node::OpPowerKind { left, right } => {
+            rename_defined_name_in_node(left, name, scope, new_name);
+            rename_defined_name_in_node(right, name, scope, new_name);
+        }
+        Node::FunctionKind { kind: _, args } => {
+            for arg in args {
+                rename_defined_name_in_node(arg, name, scope, new_name);
+            }
+        }
+        Node::InvalidFunctionKind { name: _, args } => {
+            for arg in args {
+                rename_defined_name_in_node(arg, name, scope, new_name);
+            }
+        }
+        Node::CompareKind {
+            kind: _,
+            left,
+            right,
+        } => {
+            rename_defined_name_in_node(left, name, scope, new_name);
+            rename_defined_name_in_node(right, name, scope, new_name);
+        }
+        Node::UnaryKind { kind: _, right } => {
+            rename_defined_name_in_node(right, name, scope, new_name);
+        }
+
+        // Do nothing
+        Node::BooleanKind(_) => {}
+        Node::NumberKind(_) => {}
+        Node::StringKind(_) => {}
+        Node::ErrorKind(_) => {}
+        Node::ParseErrorKind { .. } => {}
+        Node::ArrayKind(_) => {}
+        Node::EmptyArgKind => {}
+        Node::ReferenceKind { .. } => {}
+        Node::RangeKind { .. } => {}
+        Node::WrongReferenceKind { .. } => {}
+        Node::WrongRangeKind { .. } => {}
+        Node::TableNameKind(_) => {}
+        Node::WrongVariableKind(_) => {}
+    }
+}

base/src/expressions/parser/tests/test_general.rs

@@ -17,7 +17,7 @@ struct Formula<'a> {
 #[test]
 fn test_parser_reference() {
     let worksheets = vec!["Sheet1".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
 
     // Reference cell is Sheet1!A1
     let cell_reference = CellReferenceRC {
@@ -25,14 +25,14 @@ fn test_parser_reference() {
         row: 1,
         column: 1,
     };
-    let t = parser.parse("A2", &Some(cell_reference));
+    let t = parser.parse("A2", &cell_reference);
     assert_eq!(to_rc_format(&t), "R[1]C[0]");
 }
 
 #[test]
 fn test_parser_absolute_column() {
     let worksheets = vec!["Sheet1".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
 
     // Reference cell is Sheet1!A1
     let cell_reference = CellReferenceRC {
@@ -40,14 +40,14 @@ fn test_parser_absolute_column() {
         row: 1,
         column: 1,
     };
-    let t = parser.parse("$A1", &Some(cell_reference));
+    let t = parser.parse("$A1", &cell_reference);
     assert_eq!(to_rc_format(&t), "R[0]C1");
 }
 
 #[test]
 fn test_parser_absolute_row_col() {
     let worksheets = vec!["Sheet1".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
 
     // Reference cell is Sheet1!A1
     let cell_reference = CellReferenceRC {
@@ -55,14 +55,14 @@ fn test_parser_absolute_row_col() {
         row: 1,
         column: 1,
     };
-    let t = parser.parse("$C$5", &Some(cell_reference));
+    let t = parser.parse("$C$5", &cell_reference);
     assert_eq!(to_rc_format(&t), "R5C3");
 }
 
 #[test]
 fn test_parser_absolute_row_col_1() {
     let worksheets = vec!["Sheet1".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
 
     // Reference cell is Sheet1!A1
     let cell_reference = CellReferenceRC {
@@ -70,14 +70,14 @@ fn test_parser_absolute_row_col_1() {
         row: 1,
         column: 1,
     };
-    let t = parser.parse("$A$1", &Some(cell_reference));
+    let t = parser.parse("$A$1", &cell_reference);
     assert_eq!(to_rc_format(&t), "R1C1");
 }
 
 #[test]
 fn test_parser_simple_formula() {
     let worksheets = vec!["Sheet1".to_string(), "Sheet2".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
 
     // Reference cell is Sheet1!A1
     let cell_reference = CellReferenceRC {
@@ -86,14 +86,14 @@ fn test_parser_simple_formula() {
         column: 1,
     };
 
-    let t = parser.parse("C3+Sheet2!D4", &Some(cell_reference));
+    let t = parser.parse("C3+Sheet2!D4", &cell_reference);
     assert_eq!(to_rc_format(&t), "R[2]C[2]+Sheet2!R[3]C[3]");
 }
 
 #[test]
 fn test_parser_boolean() {
     let worksheets = vec!["Sheet1".to_string(), "Sheet2".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
 
     // Reference cell is Sheet1!A1
     let cell_reference = CellReferenceRC {
@@ -102,14 +102,14 @@ fn test_parser_boolean() {
         column: 1,
     };
 
-    let t = parser.parse("true", &Some(cell_reference));
+    let t = parser.parse("true", &cell_reference);
     assert_eq!(to_rc_format(&t), "TRUE");
 }
 
 #[test]
 fn test_parser_bad_formula() {
     let worksheets = vec!["Sheet1".to_string(), "Sheet2".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
 
     // Reference cell is Sheet1!A1
     let cell_reference = CellReferenceRC {
@@ -117,7 +117,7 @@ fn test_parser_bad_formula() {
         row: 1,
         column: 1,
     };
-    let t = parser.parse("#Value", &Some(cell_reference));
+    let t = parser.parse("#Value", &cell_reference);
     match &t {
         Node::ParseErrorKind {
             formula,
@@ -138,7 +138,7 @@ fn test_parser_bad_formula() {
 #[test]
 fn test_parser_bad_formula_1() {
     let worksheets = vec!["Sheet1".to_string(), "Sheet2".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
 
     // Reference cell is Sheet1!A1
     let cell_reference = CellReferenceRC {
@@ -146,7 +146,7 @@ fn test_parser_bad_formula_1() {
         row: 1,
         column: 1,
     };
-    let t = parser.parse("<5", &Some(cell_reference));
+    let t = parser.parse("<5", &cell_reference);
     match &t {
         Node::ParseErrorKind {
             formula,
@@ -167,7 +167,7 @@ fn test_parser_bad_formula_1() {
 #[test]
 fn test_parser_bad_formula_2() {
     let worksheets = vec!["Sheet1".to_string(), "Sheet2".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
 
     // Reference cell is Sheet1!A1
     let cell_reference = CellReferenceRC {
@@ -175,7 +175,7 @@ fn test_parser_bad_formula_2() {
         row: 1,
         column: 1,
     };
-    let t = parser.parse("*5", &Some(cell_reference));
+    let t = parser.parse("*5", &cell_reference);
     match &t {
         Node::ParseErrorKind {
             formula,
@@ -196,7 +196,7 @@ fn test_parser_bad_formula_2() {
 #[test]
 fn test_parser_bad_formula_3() {
     let worksheets = vec!["Sheet1".to_string(), "Sheet2".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
 
     // Reference cell is Sheet1!A1
     let cell_reference = CellReferenceRC {
@@ -204,7 +204,7 @@ fn test_parser_bad_formula_3() {
         row: 1,
         column: 1,
     };
-    let t = parser.parse("SUM(#VALVE!)", &Some(cell_reference));
+    let t = parser.parse("SUM(#VALVE!)", &cell_reference);
     match &t {
         Node::ParseErrorKind {
             formula,
@@ -225,7 +225,7 @@ fn test_parser_bad_formula_3() {
 #[test]
 fn test_parser_formulas() {
     let worksheets = vec!["Sheet1".to_string(), "Sheet2".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
 
     let formulas = vec![
         Formula {
@@ -259,11 +259,11 @@ fn test_parser_formulas() {
     for formula in formulas {
         let t = parser.parse(
             formula.initial,
-            &Some(CellReferenceRC {
+            &CellReferenceRC {
                 sheet: "Sheet1".to_string(),
                 row: 1,
                 column: 1,
-            }),
+            },
         );
         assert_eq!(to_rc_format(&t), formula.expected);
         assert_eq!(to_string(&t, &cell_reference), formula.initial);
@@ -273,7 +273,7 @@ fn test_parser_formulas() {
 #[test]
 fn test_parser_r1c1_formulas() {
     let worksheets = vec!["Sheet1".to_string(), "Sheet2".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
     parser.set_lexer_mode(LexerMode::R1C1);
 
     let formulas = vec![
@@ -324,11 +324,11 @@ fn test_parser_r1c1_formulas() {
     for formula in formulas {
         let t = parser.parse(
             formula.initial,
-            &Some(CellReferenceRC {
+            &CellReferenceRC {
                 sheet: "Sheet1".to_string(),
                 row: 1,
                 column: 1,
-            }),
+            },
         );
         assert_eq!(to_string(&t, &cell_reference), formula.expected);
         assert_eq!(to_rc_format(&t), formula.initial);
@@ -338,7 +338,7 @@ fn test_parser_r1c1_formulas() {
 #[test]
 fn test_parser_quotes() {
     let worksheets = vec!["Sheet1".to_string(), "Second Sheet".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
 
     // Reference cell is Sheet1!A1
     let cell_reference = CellReferenceRC {
@@ -347,14 +347,14 @@ fn test_parser_quotes() {
         column: 1,
     };
 
-    let t = parser.parse("C3+'Second Sheet'!D4", &Some(cell_reference));
+    let t = parser.parse("C3+'Second Sheet'!D4", &cell_reference);
     assert_eq!(to_rc_format(&t), "R[2]C[2]+'Second Sheet'!R[3]C[3]");
 }
 
 #[test]
 fn test_parser_escape_quotes() {
     let worksheets = vec!["Sheet1".to_string(), "Second '2' Sheet".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
 
     // Reference cell is Sheet1!A1
     let cell_reference = CellReferenceRC {
@@ -363,14 +363,14 @@ fn test_parser_escape_quotes() {
         column: 1,
     };
 
-    let t = parser.parse("C3+'Second ''2'' Sheet'!D4", &Some(cell_reference));
+    let t = parser.parse("C3+'Second ''2'' Sheet'!D4", &cell_reference);
     assert_eq!(to_rc_format(&t), "R[2]C[2]+'Second ''2'' Sheet'!R[3]C[3]");
 }
 
 #[test]
 fn test_parser_parenthesis() {
     let worksheets = vec!["Sheet1".to_string(), "Second2".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
 
     // Reference cell is Sheet1!A1
     let cell_reference = CellReferenceRC {
@@ -379,14 +379,14 @@ fn test_parser_parenthesis() {
         column: 1,
     };
 
-    let t = parser.parse("(C3=\"Yes\")*5", &Some(cell_reference));
+    let t = parser.parse("(C3=\"Yes\")*5", &cell_reference);
     assert_eq!(to_rc_format(&t), "(R[2]C[2]=\"Yes\")*5");
 }
 
 #[test]
 fn test_parser_excel_xlfn() {
     let worksheets = vec!["Sheet1".to_string(), "Second2".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
 
     // Reference cell is Sheet1!A1
     let cell_reference = CellReferenceRC {
@@ -395,7 +395,7 @@ fn test_parser_excel_xlfn() {
         column: 1,
     };
 
-    let t = parser.parse("_xlfn.CONCAT(C3)", &Some(cell_reference));
+    let t = parser.parse("_xlfn.CONCAT(C3)", &cell_reference);
     assert_eq!(to_rc_format(&t), "CONCAT(R[2]C[2])");
 }
 
@@ -407,9 +407,9 @@ fn test_to_string_displaced() {
         column: 1,
     };
     let worksheets = vec!["Sheet1".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
 
-    let node = parser.parse("C3", &Some(context.clone()));
+    let node = parser.parse("C3", context);
     let displace_data = DisplaceData::Column {
         sheet: 0,
         column: 1,
@@ -427,9 +427,9 @@ fn test_to_string_displaced_full_ranges() {
         column: 1,
     };
     let worksheets = vec!["Sheet1".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
 
-    let node = parser.parse("SUM(3:3)", &Some(context.clone()));
+    let node = parser.parse("SUM(3:3)", context);
     let displace_data = DisplaceData::Column {
         sheet: 0,
         column: 1,
@@ -440,7 +440,7 @@ fn test_to_string_displaced_full_ranges() {
         "SUM(3:3)".to_string()
     );
 
-    let node = parser.parse("SUM(D:D)", &Some(context.clone()));
+    let node = parser.parse("SUM(D:D)", context);
     let displace_data = DisplaceData::Row {
         sheet: 0,
         row: 3,
@@ -460,9 +460,9 @@ fn test_to_string_displaced_too_low() {
         column: 1,
     };
     let worksheets = vec!["Sheet1".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
 
-    let node = parser.parse("C3", &Some(context.clone()));
+    let node = parser.parse("C3", context);
     let displace_data = DisplaceData::Column {
         sheet: 0,
         column: 1,
@@ -480,9 +480,9 @@ fn test_to_string_displaced_too_high() {
         column: 1,
     };
     let worksheets = vec!["Sheet1".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
 
-    let node = parser.parse("C3", &Some(context.clone()));
+    let node = parser.parse("C3", context);
     let displace_data = DisplaceData::Column {
         sheet: 0,
         column: 1,

base/src/expressions/parser/tests/test_issue_155.rs

@@ -9,7 +9,7 @@ use crate::expressions::types::CellReferenceRC;
 #[test]
 fn issue_155_parser() {
     let worksheets = vec!["Sheet1".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
 
     // Reference cell is Sheet1!A1
     let cell_reference = CellReferenceRC {
@@ -17,14 +17,14 @@ fn issue_155_parser() {
         row: 2,
         column: 2,
     };
-    let t = parser.parse("A$1:A2", &Some(cell_reference.clone()));
+    let t = parser.parse("A$1:A2", &cell_reference);
     assert_eq!(to_string(&t, &cell_reference), "A$1:A2");
 }
 
 #[test]
 fn issue_155_parser_case_2() {
     let worksheets = vec!["Sheet1".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
 
     // Reference cell is Sheet1!A1
     let cell_reference = CellReferenceRC {
@@ -32,14 +32,14 @@ fn issue_155_parser_case_2() {
         row: 20,
         column: 20,
     };
-    let t = parser.parse("C$1:D2", &Some(cell_reference.clone()));
+    let t = parser.parse("C$1:D2", &cell_reference);
     assert_eq!(to_string(&t, &cell_reference), "C$1:D2");
 }
 
 #[test]
 fn issue_155_parser_only_row() {
     let worksheets = vec!["Sheet1".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
 
     // Reference cell is Sheet1!A1
     let cell_reference = CellReferenceRC {
@@ -48,14 +48,14 @@ fn issue_155_parser_only_row() {
         column: 20,
     };
     // This is tricky, I am not sure what to do in these cases
-    let t = parser.parse("A$2:B1", &Some(cell_reference.clone()));
+    let t = parser.parse("A$2:B1", &cell_reference);
     assert_eq!(to_string(&t, &cell_reference), "A1:B$2");
 }
 
 #[test]
 fn issue_155_parser_only_column() {
     let worksheets = vec!["Sheet1".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
 
     // Reference cell is Sheet1!A1
     let cell_reference = CellReferenceRC {
@@ -64,6 +64,6 @@ fn issue_155_parser_only_column() {
         column: 20,
     };
     // This is tricky, I am not sure what to do in these cases
-    let t = parser.parse("D1:$A3", &Some(cell_reference.clone()));
+    let t = parser.parse("D1:$A3", &cell_reference);
     assert_eq!(to_string(&t, &cell_reference), "$A1:D3");
 }

base/src/expressions/parser/tests/test_move_formula.rs

@@ -15,7 +15,7 @@ fn test_move_formula() {
         column,
     };
     let worksheets = vec!["Sheet1".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
 
     // Area is C2:F6
     let area = &Area {
@@ -27,7 +27,7 @@ fn test_move_formula() {
     };
 
     // formula AB31 will not change
-    let node = parser.parse("AB31", &Some(context.clone()));
+    let node = parser.parse("AB31", context);
     let t = move_formula(
         &node,
         &MoveContext {
@@ -43,7 +43,7 @@ fn test_move_formula() {
     assert_eq!(t, "AB31");
 
     // formula $AB$31 will not change
-    let node = parser.parse("AB31", &Some(context.clone()));
+    let node = parser.parse("AB31", context);
     let t = move_formula(
         &node,
         &MoveContext {
@@ -59,7 +59,7 @@ fn test_move_formula() {
     assert_eq!(t, "AB31");
 
     // but formula D5 will change to N15  (N = D + 10)
-    let node = parser.parse("D5", &Some(context.clone()));
+    let node = parser.parse("D5", context);
     let t = move_formula(
         &node,
         &MoveContext {
@@ -75,7 +75,7 @@ fn test_move_formula() {
     assert_eq!(t, "N15");
 
     // Also formula $D$5 will change to N15  (N = D + 10)
-    let node = parser.parse("$D$5", &Some(context.clone()));
+    let node = parser.parse("$D$5", context);
     let t = move_formula(
         &node,
         &MoveContext {
@@ -102,7 +102,7 @@ fn test_move_formula_context_offset() {
         column,
     };
     let worksheets = vec!["Sheet1".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
 
     // Area is C2:F6
     let area = &Area {
@@ -113,7 +113,7 @@ fn test_move_formula_context_offset() {
         height: 5,
     };
 
-    let node = parser.parse("-X9+C2%", &Some(context.clone()));
+    let node = parser.parse("-X9+C2%", context);
     let t = move_formula(
         &node,
         &MoveContext {
@@ -140,7 +140,7 @@ fn test_move_formula_area_limits() {
         column,
     };
     let worksheets = vec!["Sheet1".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
 
     // Area is C2:F6
     let area = &Area {
@@ -152,7 +152,7 @@ fn test_move_formula_area_limits() {
     };
 
     // Outside of the area. Not moved
-    let node = parser.parse("B2+B3+C1+G6+H5", &Some(context.clone()));
+    let node = parser.parse("B2+B3+C1+G6+H5", context);
     let t = move_formula(
         &node,
         &MoveContext {
@@ -168,7 +168,7 @@ fn test_move_formula_area_limits() {
     assert_eq!(t, "B2+B3+C1+G6+H5");
 
     // In the area. Moved
-    let node = parser.parse("C2+F4+F5+F6", &Some(context.clone()));
+    let node = parser.parse("C2+F4+F5+F6", context);
     let t = move_formula(
         &node,
         &MoveContext {
@@ -195,7 +195,7 @@ fn test_move_formula_ranges() {
         column,
     };
     let worksheets = vec!["Sheet1".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
 
     let area = &Area {
         sheet: 0,
@@ -205,7 +205,7 @@ fn test_move_formula_ranges() {
         height: 5,
     };
     // Ranges inside the area are fully displaced (absolute or not)
-    let node = parser.parse("SUM(C2:F5)", &Some(context.clone()));
+    let node = parser.parse("SUM(C2:F5)", context);
     let t = move_formula(
         &node,
         &MoveContext {
@@ -220,7 +220,7 @@ fn test_move_formula_ranges() {
     );
     assert_eq!(t, "SUM(M12:P15)");
 
-    let node = parser.parse("SUM($C$2:$F$5)", &Some(context.clone()));
+    let node = parser.parse("SUM($C$2:$F$5)", context);
     let t = move_formula(
         &node,
         &MoveContext {
@@ -236,7 +236,7 @@ fn test_move_formula_ranges() {
     assert_eq!(t, "SUM($M$12:$P$15)");
 
     // Ranges completely outside of the area are not touched
-    let node = parser.parse("SUM(A1:B3)", &Some(context.clone()));
+    let node = parser.parse("SUM(A1:B3)", context);
     let t = move_formula(
         &node,
         &MoveContext {
@@ -251,7 +251,7 @@ fn test_move_formula_ranges() {
     );
     assert_eq!(t, "SUM(A1:B3)");
 
-    let node = parser.parse("SUM($A$1:$B$3)", &Some(context.clone()));
+    let node = parser.parse("SUM($A$1:$B$3)", context);
     let t = move_formula(
         &node,
         &MoveContext {
@@ -267,7 +267,7 @@ fn test_move_formula_ranges() {
     assert_eq!(t, "SUM($A$1:$B$3)");
 
     // Ranges that overlap with the area are also NOT displaced
-    let node = parser.parse("SUM(A1:F5)", &Some(context.clone()));
+    let node = parser.parse("SUM(A1:F5)", context);
     let t = move_formula(
         &node,
         &MoveContext {
@@ -283,7 +283,7 @@ fn test_move_formula_ranges() {
     assert_eq!(t, "SUM(A1:F5)");
 
     // Ranges that contain the area are also NOT displaced
-    let node = parser.parse("SUM(A1:X50)", &Some(context.clone()));
+    let node = parser.parse("SUM(A1:X50)", context);
     let t = move_formula(
         &node,
         &MoveContext {
@@ -318,10 +318,10 @@ fn test_move_formula_wrong_reference() {
         height: 5,
     };
     let worksheets = vec!["Sheet1".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
 
     // Wrong formulas will NOT be displaced
-    let node = parser.parse("Sheet3!AB31", &Some(context.clone()));
+    let node = parser.parse("Sheet3!AB31", context);
     let t = move_formula(
         &node,
         &MoveContext {
@@ -335,7 +335,7 @@ fn test_move_formula_wrong_reference() {
         },
     );
     assert_eq!(t, "Sheet3!AB31");
-    let node = parser.parse("Sheet3!$X$9", &Some(context.clone()));
+    let node = parser.parse("Sheet3!$X$9", context);
     let t = move_formula(
         &node,
         &MoveContext {
@@ -350,7 +350,7 @@ fn test_move_formula_wrong_reference() {
     );
     assert_eq!(t, "Sheet3!$X$9");
 
-    let node = parser.parse("SUM(Sheet3!D2:D3)", &Some(context.clone()));
+    let node = parser.parse("SUM(Sheet3!D2:D3)", context);
     let t = move_formula(
         &node,
         &MoveContext {
@@ -377,7 +377,7 @@ fn test_move_formula_misc() {
         column,
     };
     let worksheets = vec!["Sheet1".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
 
     // Area is C2:F6
     let area = &Area {
@@ -387,7 +387,7 @@ fn test_move_formula_misc() {
         width: 4,
         height: 5,
     };
-    let node = parser.parse("X9^C2-F4*H2", &Some(context.clone()));
+    let node = parser.parse("X9^C2-F4*H2", context);
     let t = move_formula(
         &node,
         &MoveContext {
@@ -402,7 +402,7 @@ fn test_move_formula_misc() {
     );
     assert_eq!(t, "X9^M12-P14*H2");
 
-    let node = parser.parse("F5*(-D5)*SUM(A1, X9, $D$5)", &Some(context.clone()));
+    let node = parser.parse("F5*(-D5)*SUM(A1, X9, $D$5)", context);
     let t = move_formula(
         &node,
         &MoveContext {
@@ -417,7 +417,7 @@ fn test_move_formula_misc() {
     );
     assert_eq!(t, "P15*(-N15)*SUM(A1,X9,$N$15)");
 
-    let node = parser.parse("IF(F5 < -D5, X9 & F5, FALSE)", &Some(context.clone()));
+    let node = parser.parse("IF(F5 < -D5, X9 & F5, FALSE)", context);
     let t = move_formula(
         &node,
         &MoveContext {
@@ -445,7 +445,7 @@ fn test_move_formula_another_sheet() {
     };
     // we add two sheets and we cut/paste from Sheet1 to Sheet2
     let worksheets = vec!["Sheet1".to_string(), "Sheet2".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
 
     // Area is C2:F6
     let area = &Area {
@@ -457,10 +457,7 @@ fn test_move_formula_another_sheet() {
     };
 
     // Formula AB31 and JJ3:JJ4 refers to original Sheet1!AB31 and Sheet1!JJ3:JJ4
-    let node = parser.parse(
-        "AB31*SUM(JJ3:JJ4)+SUM(Sheet2!C2:F6)*SUM(C2:F6)",
-        &Some(context.clone()),
-    );
+    let node = parser.parse("AB31*SUM(JJ3:JJ4)+SUM(Sheet2!C2:F6)*SUM(C2:F6)", context);
     let t = move_formula(
         &node,
         &MoveContext {

base/src/expressions/parser/tests/test_ranges.rs

@@ -14,7 +14,7 @@ struct Formula<'a> {
 #[test]
 fn test_parser_formulas_with_full_ranges() {
     let worksheets = vec!["Sheet1".to_string(), "Second Sheet".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
 
     let formulas = vec![
         Formula {
@@ -52,11 +52,11 @@ fn test_parser_formulas_with_full_ranges() {
     for formula in &formulas {
         let t = parser.parse(
             formula.formula_a1,
-            &Some(CellReferenceRC {
+            &CellReferenceRC {
                 sheet: "Sheet1".to_string(),
                 row: 1,
                 column: 1,
-            }),
+            },
         );
         assert_eq!(to_rc_format(&t), formula.formula_r1c1);
         assert_eq!(to_string(&t, &cell_reference), formula.formula_a1);
@@ -67,11 +67,11 @@ fn test_parser_formulas_with_full_ranges() {
     for formula in &formulas {
         let t = parser.parse(
             formula.formula_r1c1,
-            &Some(CellReferenceRC {
+            &CellReferenceRC {
                 sheet: "Sheet1".to_string(),
                 row: 1,
                 column: 1,
-            }),
+            },
         );
         assert_eq!(to_rc_format(&t), formula.formula_r1c1);
         assert_eq!(to_string(&t, &cell_reference), formula.formula_a1);
@@ -81,7 +81,7 @@ fn test_parser_formulas_with_full_ranges() {
 #[test]
 fn test_range_inverse_order() {
     let worksheets = vec!["Sheet1".to_string(), "Sheet2".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
 
     // Reference cell is Sheet1!A1
     let cell_reference = CellReferenceRC {
@@ -93,7 +93,7 @@ fn test_range_inverse_order() {
     // D4:C2 => C2:D4
     let t = parser.parse(
         "SUM(D4:C2)*SUM(Sheet2!D4:C20)*SUM($C$20:D4)",
-        &Some(cell_reference.clone()),
+        &cell_reference,
     );
     assert_eq!(
         to_string(&t, &cell_reference),

base/src/expressions/parser/tests/test_stringify.rs

@@ -9,7 +9,7 @@ use crate::expressions::types::CellReferenceRC;
 #[test]
 fn exp_order() {
     let worksheets = vec!["Sheet1".to_string()];
-    let mut parser = Parser::new(worksheets, HashMap::new());
+    let mut parser = Parser::new(worksheets, vec![], HashMap::new());
 
     // Reference cell is Sheet1!A1
     let cell_reference = CellReferenceRC {
@@ -17,18 +17,18 @@ fn exp_order() {
         row: 1,
         column: 1,
     };
-    let t = parser.parse("(1 + 2)^3  + 4", &Some(cell_reference.clone()));
+    let t = parser.parse("(1 + 2)^3  + 4", &cell_reference);
     assert_eq!(to_string(&t, &cell_reference), "(1+2)^3+4");
 
-    let t = parser.parse("(C5 + 3)^R4", &Some(cell_reference.clone()));
+    let t = parser.parse("(C5 + 3)^R4", &cell_reference);
     assert_eq!(to_string(&t, &cell_reference), "(C5+3)^R4");
 
-    let t = parser.parse("(C5 + 3)^(R4*6)", &Some(cell_reference.clone()));
+    let t = parser.parse("(C5 + 3)^(R4*6)", &cell_reference);
     assert_eq!(to_string(&t, &cell_reference), "(C5+3)^(R4*6)");
 
-    let t = parser.parse("(C5)^(R4)", &Some(cell_reference.clone()));
+    let t = parser.parse("(C5)^(R4)", &cell_reference);
     assert_eq!(to_string(&t, &cell_reference), "C5^R4");
 
-    let t = parser.parse("(5)^(4)", &Some(cell_reference.clone()));
+    let t = parser.parse("(5)^(4)", &cell_reference);
     assert_eq!(to_string(&t, &cell_reference), "5^4");
 }

base/src/expressions/parser/tests/test_tables.rs

@@ -63,7 +63,7 @@ fn simple_table() {
     let row_count = 3;
     let tables = create_test_table("tblIncome", &column_names, "A1", row_count);
 
-    let mut parser = Parser::new(worksheets, tables);
+    let mut parser = Parser::new(worksheets, vec![], tables);
     // Reference cell is 'Sheet One'!F2
     let cell_reference = CellReferenceRC {
         sheet: "Sheet One".to_string(),
@@ -72,7 +72,7 @@ fn simple_table() {
     };
 
     let formula = "SUM(tblIncome[[#This Row],[Jan]:[Dec]])";
-    let t = parser.parse(formula, &Some(cell_reference.clone()));
+    let t = parser.parse(formula, &cell_reference);
     assert_eq!(to_string(&t, &cell_reference), "SUM($A$2:$E$2)");
 
     // Cell A3
@@ -82,7 +82,7 @@ fn simple_table() {
         column: 1,
     };
     let formula = "SUBTOTAL(109, tblIncome[Jan])";
-    let t = parser.parse(formula, &Some(cell_reference.clone()));
+    let t = parser.parse(formula, &cell_reference);
     assert_eq!(to_string(&t, &cell_reference), "SUBTOTAL(109,$A$2:$A$3)");
 
     // Cell A3 in 'Second Sheet'
@@ -92,7 +92,7 @@ fn simple_table() {
         column: 1,
     };
     let formula = "SUBTOTAL(109, tblIncome[Jan])";
-    let t = parser.parse(formula, &Some(cell_reference.clone()));
+    let t = parser.parse(formula, &cell_reference);
     assert_eq!(
         to_string(&t, &cell_reference),
         "SUBTOTAL(109,'Sheet One'!$A$2:$A$3)"

base/src/expressions/parser/walk.rs

@@ -263,7 +263,9 @@ pub(crate) fn forward_references(
         // TODO: Not implemented
         Node::ArrayKind(_) => {}
         // Do nothing. Note: we could do a blanket _ => {}
-        Node::VariableKind(_) => {}
+        Node::DefinedNameKind(_) => {}
+        Node::TableNameKind(_) => {}
+        Node::WrongVariableKind(_) => {}
         Node::ErrorKind(_) => {}
         Node::ParseErrorKind { .. } => {}
         Node::EmptyArgKind => {}

base/src/functions/information.rs

@@ -247,45 +247,67 @@ impl Model {
             return CalcResult::Number(cell.sheet as f64 + 1.0);
         }
         // The arg could be a defined name or a table
-        let arg = &args[0];
-        if let Node::VariableKind(name) = arg {
-            // Let's see if it is a defined name
-            if let Some(defined_name) = self.parsed_defined_names.get(&(None, name.to_lowercase()))
-            {
-                match defined_name {
-                    ParsedDefinedName::CellReference(reference) => {
-                        return CalcResult::Number(reference.sheet as f64 + 1.0)
+        // let  = &args[0];
+        match &args[0] {
+            Node::DefinedNameKind((name, scope)) => {
+                // Let's see if it is a defined name
+                if let Some(defined_name) = self
+                    .parsed_defined_names
+                    .get(&(*scope, name.to_lowercase()))
+                {
+                    match defined_name {
+                        ParsedDefinedName::CellReference(reference) => {
+                            return CalcResult::Number(reference.sheet as f64 + 1.0)
+                        }
+                        ParsedDefinedName::RangeReference(range) => {
+                            return CalcResult::Number(range.left.sheet as f64 + 1.0)
+                        }
+                        ParsedDefinedName::InvalidDefinedNameFormula => {
+                            return CalcResult::Error {
+                                error: Error::ERROR,
+                                origin: cell,
+                                message: "Invalid name".to_string(),
+                            };
+                        }
                     }
-                    ParsedDefinedName::RangeReference(range) => {
-                        return CalcResult::Number(range.left.sheet as f64 + 1.0)
-                    }
-                    ParsedDefinedName::InvalidDefinedNameFormula => {
-                        return CalcResult::Error {
-                            error: Error::NA,
-                            origin: cell,
-                            message: "Invalid name".to_string(),
-                        };
+                } else {
+                    // This should never happen
+                    return CalcResult::Error {
+                        error: Error::ERROR,
+                        origin: cell,
+                        message: "Invalid name".to_string(),
+                    };
+                }
+            }
+            Node::TableNameKind(name) => {
+                // Now let's see if it is a table
+                for (table_name, table) in &self.workbook.tables {
+                    if table_name == name {
+                        if let Some(sheet_index) = self.get_sheet_index_by_name(&table.sheet_name) {
+                            return CalcResult::Number(sheet_index as f64 + 1.0);
+                        } else {
+                            break;
+                        }
                     }
                 }
             }
-            // Now let's see if it is a table
-            for (table_name, table) in &self.workbook.tables {
-                if table_name == name {
-                    if let Some(sheet_index) = self.get_sheet_index_by_name(&table.sheet_name) {
-                        return CalcResult::Number(sheet_index as f64 + 1.0);
-                    } else {
-                        break;
-                    }
+            Node::WrongVariableKind(name) => {
+                return CalcResult::Error {
+                    error: Error::NAME,
+                    origin: cell,
+                    message: format!("Name not found: {name}"),
+                }
+            }
+            arg => {
+                // Now it should be the name of a sheet
+                let sheet_name = match self.get_string(arg, cell) {
+                    Ok(s) => s,
+                    Err(e) => return e,
+                };
+                if let Some(sheet_index) = self.get_sheet_index_by_name(&sheet_name) {
+                    return CalcResult::Number(sheet_index as f64 + 1.0);
                 }
             }
-        }
-        // Now it should be the name of a sheet
-        let sheet_name = match self.get_string(arg, cell) {
-            Ok(s) => s,
-            Err(e) => return e,
-        };
-        if let Some(sheet_index) = self.get_sheet_index_by_name(&sheet_name) {
-            return CalcResult::Number(sheet_index as f64 + 1.0);
         }
         CalcResult::Error {
             error: Error::NA,

base/src/functions/logical.rs

@@ -66,91 +66,61 @@ impl Model {
     }
 
     pub(crate) fn fn_and(&mut self, args: &[Node], cell: CellReferenceIndex) -> CalcResult {
-        let mut true_count = 0;
-        for arg in args {
-            match self.evaluate_node_in_context(arg, cell) {
-                CalcResult::Boolean(b) => {
-                    if !b {
-                        return CalcResult::Boolean(false);
-                    }
-                    true_count += 1;
-                }
-                CalcResult::Number(value) => {
-                    if value == 0.0 {
-                        return CalcResult::Boolean(false);
-                    }
-                    true_count += 1;
-                }
-                CalcResult::String(_value) => {
-                    true_count += 1;
-                }
-                CalcResult::Range { left, right } => {
-                    if left.sheet != right.sheet {
-                        return CalcResult::new_error(
-                            Error::VALUE,
-                            cell,
-                            "Ranges are in different sheets".to_string(),
-                        );
-                    }
-                    for row in left.row..(right.row + 1) {
-                        for column in left.column..(right.column + 1) {
-                            match self.evaluate_cell(CellReferenceIndex {
-                                sheet: left.sheet,
-                                row,
-                                column,
-                            }) {
-                                CalcResult::Boolean(b) => {
-                                    if !b {
-                                        return CalcResult::Boolean(false);
-                                    }
-                                    true_count += 1;
-                                }
-                                CalcResult::Number(value) => {
-                                    if value == 0.0 {
-                                        return CalcResult::Boolean(false);
-                                    }
-                                    true_count += 1;
-                                }
-                                CalcResult::String(_value) => {
-                                    true_count += 1;
-                                }
-                                error @ CalcResult::Error { .. } => return error,
-                                CalcResult::Range { .. } => {}
-                                CalcResult::EmptyCell | CalcResult::EmptyArg => {}
-                            }
-                        }
-                    }
-                }
-                error @ CalcResult::Error { .. } => return error,
-                CalcResult::EmptyCell | CalcResult::EmptyArg => {}
-            };
-        }
-        if true_count == 0 {
-            return CalcResult::new_error(
-                Error::VALUE,
-                cell,
-                "Boolean values not found".to_string(),
-            );
-        }
-        CalcResult::Boolean(true)
+        self.logical_nary(
+            args,
+            cell,
+            |acc, value| acc.unwrap_or(true) && value,
+            Some(false),
+        )
     }
 
     pub(crate) fn fn_or(&mut self, args: &[Node], cell: CellReferenceIndex) -> CalcResult {
+        self.logical_nary(
+            args,
+            cell,
+            |acc, value| acc.unwrap_or(false) || value,
+            Some(true),
+        )
+    }
+
+    pub(crate) fn fn_xor(&mut self, args: &[Node], cell: CellReferenceIndex) -> CalcResult {
+        self.logical_nary(args, cell, |acc, value| acc.unwrap_or(false) ^ value, None)
+    }
+
+    /// Base function for AND, OR, XOR. These are all n-ary functions that perform a boolean operation on a series of
+    /// boolean values. These boolean values are sourced from `args`. Note that there is not a 1-1 relationship between
+    /// arguments and boolean values evaluated (see how Ranges are handled for example).
+    ///
+    /// Each argument in `args` is evaluated and the resulting value is interpreted as a boolean as follows:
+    /// - Boolean: The value is used directly.
+    /// - Number: 0 is FALSE, all other values are TRUE.
+    /// - Range: Each cell in the range is evaluated as if they were individual arguments with some caveats
+    /// - Empty arg: FALSE
+    /// - Empty cell & String: Ignored, behaves exactly like the argument wasn't passed in at all
+    /// - Error: Propagated
+    ///
+    /// If no arguments are provided, or all arguments are ignored, the function returns a #VALUE! error
+    ///
+    /// **`fold_fn`:** The function that combines the running result with the next value boolean value. The running result
+    /// starts as `None`.
+    ///
+    /// **`short_circuit_value`:** If the running result reaches `short_circuit_value`, the function returns early.
+    fn logical_nary(
+        &mut self,
+        args: &[Node],
+        cell: CellReferenceIndex,
+        fold_fn: fn(Option<bool>, bool) -> bool,
+        short_circuit_value: Option<bool>,
+    ) -> CalcResult {
         if args.is_empty() {
             return CalcResult::new_args_number_error(cell);
         }
-        let mut result = false;
+
+        let mut result = None;
         for arg in args {
             match self.evaluate_node_in_context(arg, cell) {
-                CalcResult::Boolean(value) => result = value || result,
-                CalcResult::Number(value) => {
-                    if value != 0.0 {
-                        return CalcResult::Boolean(true);
-                    }
-                }
-                CalcResult::String(_value) => {
-                    return CalcResult::Boolean(true);
-                }
+                CalcResult::Boolean(value) => result = Some(fold_fn(result, value)),
+                CalcResult::Number(value) => result = Some(fold_fn(result, value != 0.0)),
                 CalcResult::Range { left, right } => {
                     if left.sheet != right.sheet {
                         return CalcResult::new_error(
@@ -166,94 +136,58 @@ impl Model {
                                 row,
                                 column,
                             }) {
-                                CalcResult::Boolean(value) => {
-                                    result = value || result;
-                                }
+                                CalcResult::Boolean(value) => result = Some(fold_fn(result, value)),
                                 CalcResult::Number(value) => {
-                                    if value != 0.0 {
-                                        return CalcResult::Boolean(true);
-                                    }
-                                }
-                                CalcResult::String(_value) => {
-                                    return CalcResult::Boolean(true);
+                                    result = Some(fold_fn(result, value != 0.0))
                                 }
                                 error @ CalcResult::Error { .. } => return error,
-                                CalcResult::Range { .. } => {}
-                                CalcResult::EmptyCell | CalcResult::EmptyArg => {}
+                                CalcResult::EmptyArg => {} // unreachable
+                                CalcResult::Range { .. }
+                                | CalcResult::String { .. }
+                                | CalcResult::EmptyCell => {}
+                            }
+                            if let (Some(current_result), Some(short_circuit_value)) =
+                                (result, short_circuit_value)
+                            {
+                                if current_result == short_circuit_value {
+                                    return CalcResult::Boolean(current_result);
+                                }
                             }
                         }
                     }
                 }
                 error @ CalcResult::Error { .. } => return error,
-                CalcResult::EmptyCell | CalcResult::EmptyArg => {}
-            };
-        }
-        CalcResult::Boolean(result)
-    }
-
-    /// XOR(logical1, [logical]*,...)
-    /// Logical1 is required, subsequent logical values are optional. Can be logical values, arrays, or references.
-    /// The result of XOR is TRUE when the number of TRUE inputs is odd and FALSE when the number of TRUE inputs is even.
-    pub(crate) fn fn_xor(&mut self, args: &[Node], cell: CellReferenceIndex) -> CalcResult {
-        let mut true_count = 0;
-        let mut false_count = 0;
-        for arg in args {
-            match self.evaluate_node_in_context(arg, cell) {
-                CalcResult::Boolean(b) => {
-                    if b {
-                        true_count += 1;
-                    } else {
-                        false_count += 1;
-                    }
-                }
-                CalcResult::Number(value) => {
-                    if value != 0.0 {
-                        true_count += 1;
-                    } else {
-                        false_count += 1;
-                    }
-                }
-                CalcResult::Range { left, right } => {
-                    if left.sheet != right.sheet {
-                        return CalcResult::new_error(
-                            Error::VALUE,
-                            cell,
-                            "Ranges are in different sheets".to_string(),
-                        );
-                    }
-                    for row in left.row..(right.row + 1) {
-                        for column in left.column..(right.column + 1) {
-                            match self.evaluate_cell(CellReferenceIndex {
-                                sheet: left.sheet,
-                                row,
-                                column,
-                            }) {
-                                CalcResult::Boolean(b) => {
-                                    if b {
-                                        true_count += 1;
-                                    } else {
-                                        false_count += 1;
-                                    }
-                                }
-                                CalcResult::Number(value) => {
-                                    if value != 0.0 {
-                                        true_count += 1;
-                                    } else {
-                                        false_count += 1;
-                                    }
-                                }
-                                _ => {}
-                            }
+                CalcResult::EmptyArg => result = Some(result.unwrap_or(false)),
+                // Strings are ignored unless they are "TRUE" or "FALSE" (case insensitive). EXCEPT if the string value
+                // comes from a reference, in which case it is always ignored regardless of its value.
+                CalcResult::String(..) => {
+                    if !matches!(arg, Node::ReferenceKind { .. }) {
+                        if let Ok(f) = self.get_boolean(arg, cell) {
+                            result = Some(fold_fn(result, f));
                         }
                     }
                 }
-                _ => {}
-            };
+                // References to empty cells are ignored. If all args are ignored the result is #VALUE!
+                CalcResult::EmptyCell => {}
+            }
+
+            if let (Some(current_result), Some(short_circuit_value)) = (result, short_circuit_value)
+            {
+                if current_result == short_circuit_value {
+                    return CalcResult::Boolean(current_result);
+                }
+            }
         }
-        if true_count == 0 && false_count == 0 {
-            return CalcResult::new_error(Error::VALUE, cell, "No booleans found".to_string());
+
+        if let Some(result) = result {
+            CalcResult::Boolean(result)
+        } else {
+            CalcResult::new_error(
+                Error::VALUE,
+                cell,
+                "No logical values in argument list".to_string(),
+            )
         }
-        CalcResult::Boolean(true_count % 2 == 1)
     }
 
     /// =SWITCH(expression, case1, value1, [case, value]*, [default])

base/src/lib.rs

@@ -25,6 +25,8 @@
 #![doc = include_str!("../examples/formulas_and_errors.rs")]
 //! ```
 
+#![warn(clippy::print_stdout)]
+
 pub mod calc_result;
 pub mod cell;
 pub mod expressions;

base/src/model.rs

@@ -8,14 +8,15 @@ use crate::{
     cell::CellValue,
     constants::{self, LAST_COLUMN, LAST_ROW},
     expressions::{
+        lexer::LexerMode,
         parser::{
             move_formula::{move_formula, MoveContext},
-            stringify::{to_rc_format, to_string},
+            stringify::{rename_defined_name_in_node, to_rc_format, to_string},
             Node, Parser,
         },
         token::{get_error_by_name, Error, OpCompare, OpProduct, OpSum, OpUnary},
         types::*,
-        utils::{self, is_valid_column_number, is_valid_row},
+        utils::{self, is_valid_column_number, is_valid_identifier, is_valid_row},
     },
     formatter::{
         format::{format_number, parse_formatted_number},
@@ -72,6 +73,7 @@ pub(crate) enum CellState {
 }
 
 /// A parsed formula for a defined name
+#[derive(Clone)]
 pub(crate) enum ParsedDefinedName {
     /// CellReference (`=C4`)
     CellReference(CellReferenceIndex),
@@ -79,9 +81,6 @@ pub(crate) enum ParsedDefinedName {
     RangeReference(Range),
     /// `=SomethingElse`
     InvalidDefinedNameFormula,
-    // TODO: Support constants in defined names
-    // TODO: Support formulas in defined names
-    // TODO: Support tables in defined names
 }
 
 /// A dynamical IronCalc model.
@@ -417,38 +416,40 @@ impl Model {
                 // TODO: NOT IMPLEMENTED
                 CalcResult::new_error(Error::NIMPL, cell, "Arrays not implemented".to_string())
             }
-            VariableKind(defined_name) => {
-                let parsed_defined_name = self
-                    .parsed_defined_names
-                    .get(&(Some(cell.sheet), defined_name.to_lowercase())) // try getting local defined name
-                    .or_else(|| {
-                        self.parsed_defined_names
-                            .get(&(None, defined_name.to_lowercase()))
-                    }); // fallback to global
-
-                if let Some(parsed_defined_name) = parsed_defined_name {
+            DefinedNameKind((name, scope)) => {
+                if let Ok(Some(parsed_defined_name)) = self.get_parsed_defined_name(name, *scope) {
                     match parsed_defined_name {
                         ParsedDefinedName::CellReference(reference) => {
-                            self.evaluate_cell(*reference)
+                            self.evaluate_cell(reference)
                         }
                         ParsedDefinedName::RangeReference(range) => CalcResult::Range {
                             left: range.left,
                             right: range.right,
                         },
                         ParsedDefinedName::InvalidDefinedNameFormula => CalcResult::new_error(
-                            Error::NIMPL,
+                            Error::NAME,
                             cell,
-                            format!("Defined name \"{}\" is not a reference.", defined_name),
+                            format!("Defined name \"{}\" is not a reference.", name),
                         ),
                     }
                 } else {
                     CalcResult::new_error(
                         Error::NAME,
                         cell,
-                        format!("Defined name \"{}\" not found.", defined_name),
+                        format!("Defined name \"{}\" not found.", name),
                     )
                 }
             }
+            TableNameKind(s) => CalcResult::new_error(
+                Error::NAME,
+                cell,
+                format!("table name \"{}\" not supported.", s),
+            ),
+            WrongVariableKind(s) => CalcResult::new_error(
+                Error::NAME,
+                cell,
+                format!("Variable name \"{}\" not found.", s),
+            ),
             CompareKind { kind, left, right } => {
                 let l = self.evaluate_node_in_context(left, cell);
                 if l.is_error() {
@@ -682,6 +683,13 @@ impl Model {
         Err(format!("Invalid color: {}", color))
     }
 
+    /// Changes the visibility of a sheet
+    pub fn set_sheet_state(&mut self, sheet: u32, state: SheetState) -> Result<(), String> {
+        let worksheet = self.workbook.worksheet_mut(sheet)?;
+        worksheet.state = state;
+        Ok(())
+    }
+
     /// Makes the grid lines in the sheet visible (`true`) or hidden (`false`)
     pub fn set_show_grid_lines(&mut self, sheet: u32, show_grid_lines: bool) -> Result<(), String> {
         let worksheet = self.workbook.worksheet_mut(sheet)?;
@@ -857,6 +865,11 @@ impl Model {
 
         let worksheet_names = worksheets.iter().map(|s| s.get_name()).collect();
 
+        let defined_names = workbook
+            .get_defined_names_with_scope()
+            .iter()
+            .map(|s| (s.0.to_owned(), s.1))
+            .collect();
         // add all tables
         // let mut tables = Vec::new();
         // for worksheet in worksheets {
@@ -866,7 +879,7 @@ impl Model {
         //     }
         //     tables.push(tables_in_sheet);
         // }
-        let parser = Parser::new(worksheet_names, workbook.tables.clone());
+        let parser = Parser::new(worksheet_names, defined_names, workbook.tables.clone());
         let cells = HashMap::new();
         let locale = get_locale(&workbook.settings.locale)
             .map_err(|_| "Invalid locale".to_string())?
@@ -1027,7 +1040,7 @@ impl Model {
                 column: source.column,
             };
             let formula_str = move_formula(
-                &self.parser.parse(formula, &Some(cell_reference)),
+                &self.parser.parse(formula, &cell_reference),
                 &MoveContext {
                     source_sheet_name: &source_sheet_name,
                     row: source.row,
@@ -1135,7 +1148,7 @@ impl Model {
                 row: source.row,
                 column: source.column,
             };
-            let formula = &self.parser.parse(formula_str, &Some(cell_reference));
+            let formula = &self.parser.parse(formula_str, &cell_reference);
             let cell_reference = CellReferenceRC {
                 sheet: target_sheet_name,
                 row: target.row,
@@ -1511,13 +1524,11 @@ impl Model {
             column,
         };
         let shared_formulas = &mut worksheet.shared_formulas;
-        let mut parsed_formula = self.parser.parse(formula, &Some(cell_reference.clone()));
+        let mut parsed_formula = self.parser.parse(formula, &cell_reference);
         // If the formula fails to parse try adding a parenthesis
         // SUM(A1:A3  => SUM(A1:A3)
         if let Node::ParseErrorKind { .. } = parsed_formula {
-            let new_parsed_formula = self
-                .parser
-                .parse(&format!("{})", formula), &Some(cell_reference));
+            let new_parsed_formula = self.parser.parse(&format!("{})", formula), &cell_reference);
             match new_parsed_formula {
                 Node::ParseErrorKind { .. } => {}
                 _ => parsed_formula = new_parsed_formula,
@@ -1596,6 +1607,42 @@ impl Model {
             .set_cell_with_number(row, column, value, style)
     }
 
+    // Helper function that returns a defined name given the name and scope
+    fn get_parsed_defined_name(
+        &self,
+        name: &str,
+        scope: Option<u32>,
+    ) -> Result<Option<ParsedDefinedName>, String> {
+        let name_upper = name.to_uppercase();
+
+        for (key, df) in &self.parsed_defined_names {
+            if key.1.to_uppercase() == name_upper && key.0 == scope {
+                return Ok(Some(df.clone()));
+            }
+        }
+        Ok(None)
+    }
+
+    // Returns the formula for a defined name
+    pub(crate) fn get_defined_name_formula(
+        &self,
+        name: &str,
+        scope: Option<u32>,
+    ) -> Result<String, String> {
+        let name_upper = name.to_uppercase();
+        let defined_names = &self.workbook.defined_names;
+        let sheet_id = match scope {
+            Some(index) => Some(self.workbook.worksheet(index)?.sheet_id),
+            None => None,
+        };
+        for df in defined_names {
+            if df.name.to_uppercase() == name_upper && df.sheet_id == sheet_id {
+                return Ok(df.formula.clone());
+            }
+        }
+        Err("Defined name not found".to_string())
+    }
+
     /// Gets the Excel Value (Bool, Number, String) of a cell
     ///
     /// See also:
@@ -1986,6 +2033,137 @@ impl Model {
             .worksheet_mut(sheet)?
             .set_row_height(column, height)
     }
+
+    /// Adds a new defined name
+    pub fn new_defined_name(
+        &mut self,
+        name: &str,
+        scope: Option<u32>,
+        formula: &str,
+    ) -> Result<(), String> {
+        if !is_valid_identifier(name) {
+            return Err("Invalid defined name".to_string());
+        };
+        let name_upper = name.to_uppercase();
+        let defined_names = &self.workbook.defined_names;
+        let sheet_id = match scope {
+            Some(index) => Some(self.workbook.worksheet(index)?.sheet_id),
+            None => None,
+        };
+        // if the defined name already exist return error
+        for df in defined_names {
+            if df.name.to_uppercase() == name_upper && df.sheet_id == sheet_id {
+                return Err("Defined name already exists".to_string());
+            }
+        }
+        self.workbook.defined_names.push(DefinedName {
+            name: name.to_string(),
+            formula: formula.to_string(),
+            sheet_id,
+        });
+        self.reset_parsed_structures();
+
+        Ok(())
+    }
+
+    /// Delete defined name of name and scope
+    pub fn delete_defined_name(&mut self, name: &str, scope: Option<u32>) -> Result<(), String> {
+        let name_upper = name.to_uppercase();
+        let defined_names = &self.workbook.defined_names;
+        let sheet_id = match scope {
+            Some(index) => Some(self.workbook.worksheet(index)?.sheet_id),
+            None => None,
+        };
+        let mut index = None;
+        for (i, df) in defined_names.iter().enumerate() {
+            if df.name.to_uppercase() == name_upper && df.sheet_id == sheet_id {
+                index = Some(i);
+            }
+        }
+        if let Some(i) = index {
+            self.workbook.defined_names.remove(i);
+            self.reset_parsed_structures();
+            Ok(())
+        } else {
+            Err("Defined name not found".to_string())
+        }
+    }
+
+    /// Update defined name
+    pub fn update_defined_name(
+        &mut self,
+        name: &str,
+        scope: Option<u32>,
+        new_name: &str,
+        new_scope: Option<u32>,
+        new_formula: &str,
+    ) -> Result<(), String> {
+        if !is_valid_identifier(new_name) {
+            return Err("Invalid defined name".to_string());
+        };
+        let name_upper = name.to_uppercase();
+        let new_name_upper = new_name.to_uppercase();
+
+        if name_upper != new_name_upper || scope != new_scope {
+            for key in self.parsed_defined_names.keys() {
+                if key.1.to_uppercase() == new_name_upper && key.0 == new_scope {
+                    return Err("Defined name already exists".to_string());
+                }
+            }
+        }
+        let defined_names = &self.workbook.defined_names;
+        let sheet_id = match scope {
+            Some(index) => Some(self.workbook.worksheet(index)?.sheet_id),
+            None => None,
+        };
+
+        let new_sheet_id = match new_scope {
+            Some(index) => Some(self.workbook.worksheet(index)?.sheet_id),
+            None => None,
+        };
+
+        let mut index = None;
+        for (i, df) in defined_names.iter().enumerate() {
+            if df.name.to_uppercase() == name_upper && df.sheet_id == sheet_id {
+                index = Some(i);
+            }
+        }
+        if let Some(i) = index {
+            if let Some(df) = self.workbook.defined_names.get_mut(i) {
+                if new_name != df.name {
+                    // We need to rename the name in every formula:
+
+                    // Parse all formulas with the old name
+                    // All internal formulas are R1C1
+                    self.parser.set_lexer_mode(LexerMode::R1C1);
+                    let worksheets = &mut self.workbook.worksheets;
+                    for worksheet in worksheets {
+                        let cell_reference = CellReferenceRC {
+                            sheet: worksheet.get_name(),
+                            row: 1,
+                            column: 1,
+                        };
+                        let mut formulas = Vec::new();
+                        for formula in &worksheet.shared_formulas {
+                            let mut t = self.parser.parse(formula, &cell_reference);
+                            rename_defined_name_in_node(&mut t, name, scope, new_name);
+                            formulas.push(to_rc_format(&t));
+                        }
+                        worksheet.shared_formulas = formulas;
+                    }
+                    // Se the mode back to A1
+                    self.parser.set_lexer_mode(LexerMode::A1);
+                }
+                df.name = new_name.to_string();
+                df.sheet_id = new_sheet_id;
+                df.formula = new_formula.to_string();
+                self.reset_parsed_structures();
+            }
+            Ok(())
+        } else {
+            Err("Defined name not found".to_string())
+        }
+    }
 }
 
 #[cfg(test)]

base/src/new_empty.rs

@@ -85,14 +85,14 @@ impl Model {
         let worksheets = &self.workbook.worksheets;
         for worksheet in worksheets {
             let shared_formulas = &worksheet.shared_formulas;
-            let cell_reference = &Some(CellReferenceRC {
+            let cell_reference = CellReferenceRC {
                 sheet: worksheet.get_name(),
                 row: 1,
                 column: 1,
-            });
+            };
             let mut parse_formula = Vec::new();
             for formula in shared_formulas {
-                let t = self.parser.parse(formula, cell_reference);
+                let t = self.parser.parse(formula, &cell_reference);
                 parse_formula.push(t);
             }
             self.parsed_formulas.push(parse_formula);
@@ -144,8 +144,14 @@ impl Model {
 
     /// Reparses all formulas and defined names
     pub(crate) fn reset_parsed_structures(&mut self) {
+        let defined_names = self
+            .workbook
+            .get_defined_names_with_scope()
+            .iter()
+            .map(|s| (s.0.to_owned(), s.1))
+            .collect();
         self.parser
-            .set_worksheets(self.workbook.get_worksheet_names());
+            .set_worksheets_and_names(self.workbook.get_worksheet_names(), defined_names);
         self.parsed_formulas = vec![];
         self.parse_formulas();
         self.parsed_defined_names = HashMap::new();
@@ -262,11 +268,11 @@ impl Model {
         // We use iter because the default would be a mut_iter and we don't need a mutable reference
         let worksheets = &mut self.workbook.worksheets;
         for worksheet in worksheets {
-            let cell_reference = &Some(CellReferenceRC {
+            let cell_reference = &CellReferenceRC {
                 sheet: worksheet.get_name(),
                 row: 1,
                 column: 1,
-            });
+            };
             let mut formulas = Vec::new();
             for formula in &worksheet.shared_formulas {
                 let mut t = self.parser.parse(formula, cell_reference);
@@ -388,7 +394,7 @@ impl Model {
         let parsed_formulas = Vec::new();
         let worksheets = &workbook.worksheets;
         let worksheet_names = worksheets.iter().map(|s| s.get_name()).collect();
-        let parser = Parser::new(worksheet_names, HashMap::new());
+        let parser = Parser::new(worksheet_names, vec![], HashMap::new());
         let cells = HashMap::new();
 
         // FIXME: Add support for display languages

base/src/test/mod.rs

@@ -19,6 +19,7 @@ mod test_fn_formulatext;
 mod test_fn_if;
 mod test_fn_maxifs;
 mod test_fn_minifs;
+mod test_fn_or_xor;
 mod test_fn_product;
 mod test_fn_rept;
 mod test_fn_sum;
@@ -46,7 +47,6 @@ pub(crate) mod util;
 
 mod engineering;
 mod test_fn_offset;
-mod test_fn_or;
 mod test_number_format;
 
 mod test_escape_quotes;

base/src/test/test_fn_or.rs

@@ -1,36 +0,0 @@
-#![allow(clippy::unwrap_used)]
-
-use crate::test::util::new_empty_model;
-
-#[test]
-fn fn_or() {
-    let mut model = new_empty_model();
-    model._set("A1", "=OR(1, 0)");
-    model._set("A2", "=OR(0, 0)");
-    model._set("A3", "=OR(true, false)");
-    model._set("A4", "=OR(false, false)");
-
-    model.evaluate();
-    assert_eq!(model._get_text("A1"), *"TRUE");
-    assert_eq!(model._get_text("A2"), *"FALSE");
-    assert_eq!(model._get_text("A3"), *"TRUE");
-    assert_eq!(model._get_text("A4"), *"FALSE");
-}
-
-#[test]
-fn fn_or_no_arguments() {
-    let mut model = new_empty_model();
-    model._set("A1", "=OR()");
-    model.evaluate();
-    assert_eq!(model._get_text("A1"), *"#ERROR!");
-}
-
-#[test]
-fn fn_or_missing_arguments() {
-    let mut model = new_empty_model();
-    model._set("A1", "=OR(,)");
-    model._set("A2", "=OR(,1)");
-    model.evaluate();
-    assert_eq!(model._get_text("A1"), *"FALSE");
-    assert_eq!(model._get_text("A2"), *"TRUE");
-}

base/src/test/test_fn_or_xor.rs

@@ -0,0 +1,204 @@
+#![allow(clippy::unwrap_used)]
+#![allow(clippy::print_stdout)]
+use crate::test::util::new_empty_model;
+
+// These tests are grouped because in many cases XOR and OR have similar behaviour.
+
+// Test specific to xor
+#[test]
+fn fn_xor() {
+    let mut model = new_empty_model();
+
+    model._set("A1", "=XOR(1, 1, 1, 0, 0)");
+    model._set("A2", "=XOR(1, 1, 0, 0, 0)");
+    model._set("A3", "=XOR(TRUE, TRUE, TRUE, FALSE, FALSE)");
+    model._set("A4", "=XOR(TRUE, TRUE, FALSE, FALSE, FALSE)");
+    model._set("A5", "=XOR(FALSE, FALSE, FALSE, FALSE, FALSE)");
+    model._set("A6", "=XOR(TRUE, TRUE)");
+    model._set("A7", "=XOR(0,0,0)");
+    model._set("A8", "=XOR(0,0,1)");
+    model._set("A9", "=XOR(0,1,0)");
+    model._set("A10", "=XOR(0,1,1)");
+    model._set("A11", "=XOR(1,0,0)");
+    model._set("A12", "=XOR(1,0,1)");
+    model._set("A13", "=XOR(1,1,0)");
+    model._set("A14", "=XOR(1,1,1)");
+
+    model.evaluate();
+
+    assert_eq!(model._get_text("A1"), *"TRUE");
+    assert_eq!(model._get_text("A2"), *"FALSE");
+    assert_eq!(model._get_text("A3"), *"TRUE");
+    assert_eq!(model._get_text("A4"), *"FALSE");
+    assert_eq!(model._get_text("A5"), *"FALSE");
+    assert_eq!(model._get_text("A6"), *"FALSE");
+    assert_eq!(model._get_text("A7"), *"FALSE");
+    assert_eq!(model._get_text("A8"), *"TRUE");
+    assert_eq!(model._get_text("A9"), *"TRUE");
+    assert_eq!(model._get_text("A10"), *"FALSE");
+    assert_eq!(model._get_text("A11"), *"TRUE");
+    assert_eq!(model._get_text("A12"), *"FALSE");
+    assert_eq!(model._get_text("A13"), *"FALSE");
+    assert_eq!(model._get_text("A14"), *"TRUE");
+}
+
+#[test]
+fn fn_or() {
+    let mut model = new_empty_model();
+
+    model._set("A1", "=OR(1, 1, 1, 0, 0)");
+    model._set("A2", "=OR(1, 1, 0, 0, 0)");
+    model._set("A3", "=OR(TRUE, TRUE, TRUE, FALSE, FALSE)");
+    model._set("A4", "=OR(TRUE, TRUE, FALSE, FALSE, FALSE)");
+    model._set("A5", "=OR(FALSE, FALSE, FALSE, FALSE, FALSE)");
+    model._set("A6", "=OR(TRUE, TRUE)");
+
+    model.evaluate();
+
+    assert_eq!(model._get_text("A1"), *"TRUE");
+    assert_eq!(model._get_text("A2"), *"TRUE");
+    assert_eq!(model._get_text("A3"), *"TRUE");
+    assert_eq!(model._get_text("A4"), *"TRUE");
+    assert_eq!(model._get_text("A5"), *"FALSE");
+    assert_eq!(model._get_text("A6"), *"TRUE");
+}
+
+#[test]
+fn fn_or_xor() {
+    inner("or");
+    inner("xor");
+
+    fn inner(func: &str) {
+        println!("Testing function: {func}");
+
+        let mut model = new_empty_model();
+
+        // Text args
+        model._set("A1", &format!(r#"={func}("")"#));
+        model._set("A2", &format!(r#"={func}("", "")"#));
+        model._set("A3", &format!(r#"={func}("", TRUE)"#));
+        model._set("A4", &format!(r#"={func}("", FALSE)"#));
+
+        model._set("A5", &format!("={func}(FALSE, TRUE)"));
+        model._set("A6", &format!("={func}(FALSE, FALSE)"));
+        model._set("A7", &format!("={func}(TRUE, FALSE)"));
+
+        // Reference to empty cell, plus true argument
+        model._set("A8", &format!("={func}(Z99, 1)"));
+
+        // Reference to empty cell/range
+        model._set("A9", &format!("={func}(Z99)"));
+        model._set("A10", &format!("={func}(X99:Z99"));
+
+        // Reference to cell with reference to empty range
+        model._set("B11", "=X99:Z99");
+        model._set("A11", &format!("={func}(B11)"));
+
+        // Reference to cell with non-empty range
+        model._set("X12", "1");
+        model._set("B12", "=X12:Z12");
+        model._set("A12", &format!("={func}(B12)"));
+
+        // Reference to text cell
+        model._set("B13", "some_text");
+        model._set("A13", &format!("={func}(B13)"));
+        model._set("A14", &format!("={func}(B13, 0)"));
+        model._set("A15", &format!("={func}(B13, 1)"));
+
+        // Reference to Implicit intersection
+        model._set("X16", "1");
+        model._set("B16", "=@X15:X16");
+        model._set("A16", &format!("={func}(B16)"));
+
+        // Non-empty range
+        model._set("B17", "1");
+        model._set("A17", &format!("={func}(B17:C17)"));
+
+        // Non-empty range with text
+        model._set("B18", "text");
+        model._set("A18", &format!("={func}(B18:C18)"));
+
+        // Non-empty range with text and number
+        model._set("B19", "text");
+        model._set("C19", "1");
+        model._set("A19", &format!("={func}(B19:C19)"));
+
+        // range with error
+        model._set("B20", "=1/0");
+        model._set("A20", &format!("={func}(B20:C20)"));
+
+        model.evaluate();
+
+        assert_eq!(model._get_text("A1"), *"#VALUE!");
+        assert_eq!(model._get_text("A2"), *"#VALUE!");
+        assert_eq!(model._get_text("A3"), *"TRUE");
+        assert_eq!(model._get_text("A4"), *"FALSE");
+
+        assert_eq!(model._get_text("A5"), *"TRUE");
+        assert_eq!(model._get_text("A6"), *"FALSE");
+        assert_eq!(model._get_text("A7"), *"TRUE");
+
+        assert_eq!(model._get_text("A8"), *"TRUE");
+
+        assert_eq!(model._get_text("A9"), *"#VALUE!");
+        assert_eq!(model._get_text("A10"), *"#VALUE!");
+
+        assert_eq!(model._get_text("A11"), *"#VALUE!");
+
+        // TODO: This one depends on spill behaviour which isn't implemented yet
+        // assert_eq!(model._get_text("A12"), *"TRUE");
+
+        assert_eq!(model._get_text("A13"), *"#VALUE!");
+        assert_eq!(model._get_text("A14"), *"FALSE");
+        assert_eq!(model._get_text("A15"), *"TRUE");
+
+        // TODO: This one depends on @ implicit intersection behaviour which isn't implemented yet
+        // assert_eq!(model._get_text("A16"), *"TRUE");
+
+        assert_eq!(model._get_text("A17"), *"TRUE");
+
+        assert_eq!(model._get_text("A18"), *"#VALUE!");
+
+        assert_eq!(model._get_text("A19"), *"TRUE");
+
+        assert_eq!(model._get_text("A20"), *"#DIV/0!");
+    }
+}
+
+#[test]
+fn fn_or_xor_no_arguments() {
+    inner("or");
+    inner("xor");
+
+    fn inner(func: &str) {
+        println!("Testing function: {func}");
+
+        let mut model = new_empty_model();
+        model._set("A1", &format!("={}()", func));
+        model.evaluate();
+        assert_eq!(model._get_text("A1"), *"#ERROR!");
+    }
+}
+
+#[test]
+fn fn_or_xor_missing_arguments() {
+    inner("or");
+    inner("xor");
+
+    fn inner(func: &str) {
+        println!("Testing function: {func}");
+
+        let mut model = new_empty_model();
+        model._set("A1", &format!("={func}(,)"));
+        model._set("A2", &format!("={func}(,1)"));
+        model._set("A3", &format!("={func}(1,)"));
+        model._set("A4", &format!("={func}(,B1)"));
+        model._set("A5", &format!("={func}(,B1:B4)"));
+        model.evaluate();
+        assert_eq!(model._get_text("A1"), *"FALSE");
+        assert_eq!(model._get_text("A2"), *"TRUE");
+        assert_eq!(model._get_text("A3"), *"TRUE");
+        assert_eq!(model._get_text("A4"), *"FALSE");
+        assert_eq!(model._get_text("A5"), *"FALSE");
+    }
+}

base/src/test/user_model/mod.rs

@@ -3,6 +3,7 @@ mod test_autofill_columns;
 mod test_autofill_rows;
 mod test_border;
 mod test_clear_cells;
+mod test_defined_names;
 mod test_diff_queue;
 mod test_evaluation;
 mod test_general;
@@ -14,6 +15,7 @@ mod test_on_paste_styles;
 mod test_paste_csv;
 mod test_rename_sheet;
 mod test_row_column;
+mod test_sheet_state;
 mod test_styles;
 mod test_to_from_bytes;
 mod test_undo_redo;

base/src/test/user_model/test_defined_names.rs

@@ -0,0 +1,398 @@
+#![allow(clippy::unwrap_used)]
+
+use crate::UserModel;
+
+#[test]
+fn create_defined_name() {
+    let mut model = UserModel::new_empty("model", "en", "UTC").unwrap();
+    model.set_user_input(0, 1, 1, "42").unwrap();
+    model
+        .new_defined_name("myName", None, "Sheet1!$A$1")
+        .unwrap();
+    model.set_user_input(0, 5, 7, "=myName").unwrap();
+    assert_eq!(
+        model.get_formatted_cell_value(0, 5, 7),
+        Ok("42".to_string())
+    );
+
+    assert_eq!(
+        model.get_defined_name_list(),
+        vec![("myName".to_string(), None, "Sheet1!$A$1".to_string())]
+    );
+
+    // delete it
+    model.delete_defined_name("myName", None).unwrap();
+    assert_eq!(
+        model.get_formatted_cell_value(0, 5, 7),
+        Ok("#NAME?".to_string())
+    );
+
+    assert_eq!(model.get_defined_name_list().len(), 0);
+
+    model.undo().unwrap();
+    assert_eq!(
+        model.get_formatted_cell_value(0, 5, 7),
+        Ok("42".to_string())
+    );
+}
+
+#[test]
+fn scopes() {
+    let mut model = UserModel::new_empty("model", "en", "UTC").unwrap();
+    model.set_user_input(0, 1, 1, "42").unwrap();
+
+    // Global
+    model
+        .new_defined_name("myName", None, "Sheet1!$A$1")
+        .unwrap();
+    model.set_user_input(0, 5, 7, "=myName").unwrap();
+
+    // Local to Sheet2
+    model.new_sheet().unwrap();
+    model.set_user_input(1, 2, 1, "145").unwrap();
+    model
+        .new_defined_name("myName", Some(1), "Sheet2!$A$2")
+        .unwrap();
+    model.set_user_input(1, 8, 8, "=myName").unwrap();
+
+    // Sheet 3
+    model.new_sheet().unwrap();
+    model.set_user_input(2, 2, 2, "=myName").unwrap();
+
+    // Global
+    assert_eq!(
+        model.get_formatted_cell_value(0, 5, 7),
+        Ok("42".to_string())
+    );
+
+    assert_eq!(
+        model.get_formatted_cell_value(1, 8, 8),
+        Ok("145".to_string())
+    );
+
+    assert_eq!(
+        model.get_formatted_cell_value(2, 2, 2),
+        Ok("42".to_string())
+    );
+}
+
+#[test]
+fn delete_sheet() {
+    let mut model = UserModel::new_empty("model", "en", "UTC").unwrap();
+    model.set_user_input(0, 1, 1, "Hello").unwrap();
+    model
+        .set_user_input(0, 2, 1, r#"=CONCATENATE(MyName, " world!")"#)
+        .unwrap();
+    model.new_sheet().unwrap();
+    model
+        .new_defined_name("myName", Some(1), "Sheet1!$A$1")
+        .unwrap();
+    model
+        .set_user_input(1, 2, 1, r#"=CONCATENATE(MyName, " my world!")"#)
+        .unwrap();
+
+    assert_eq!(
+        model.get_formatted_cell_value(0, 2, 1),
+        Ok("#NAME?".to_string())
+    );
+
+    assert_eq!(
+        model.get_formatted_cell_value(1, 2, 1),
+        Ok("Hello my world!".to_string())
+    );
+
+    model.delete_sheet(0).unwrap();
+
+    assert_eq!(
+        model.get_formatted_cell_value(0, 2, 1),
+        Ok("#NAME?".to_string())
+    );
+
+    assert_eq!(
+        model.get_cell_content(0, 2, 1),
+        Ok(r#"=CONCATENATE(MyName," my world!")"#.to_string())
+    );
+}
+
+#[test]
+fn change_scope() {
+    let mut model = UserModel::new_empty("model", "en", "UTC").unwrap();
+    model.set_user_input(0, 1, 1, "Hello").unwrap();
+    model
+        .set_user_input(0, 2, 1, r#"=CONCATENATE(MyName, " world!")"#)
+        .unwrap();
+    model.new_sheet().unwrap();
+    model
+        .new_defined_name("myName", Some(1), "Sheet1!$A$1")
+        .unwrap();
+
+    assert_eq!(
+        model.get_formatted_cell_value(0, 2, 1),
+        Ok("#NAME?".to_string())
+    );
+
+    model
+        .update_defined_name("myName", Some(1), "myName", None, "Sheet1!$A$1")
+        .unwrap();
+
+    assert_eq!(
+        model.get_formatted_cell_value(0, 2, 1),
+        Ok("Hello world!".to_string())
+    );
+}
+
+#[test]
+fn rename_defined_name() {
+    let mut model = UserModel::new_empty("model", "en", "UTC").unwrap();
+    model.set_user_input(0, 1, 1, "Hello").unwrap();
+    model
+        .set_user_input(0, 2, 1, r#"=CONCATENATE(MyName, " world!")"#)
+        .unwrap();
+    model.new_sheet().unwrap();
+    model
+        .new_defined_name("myName", None, "Sheet1!$A$1")
+        .unwrap();
+
+    assert_eq!(
+        model.get_formatted_cell_value(0, 2, 1),
+        Ok("Hello world!".to_string())
+    );
+
+    model
+        .update_defined_name("myName", None, "newName", None, "Sheet1!$A$1")
+        .unwrap();
+
+    assert_eq!(
+        model.get_formatted_cell_value(0, 2, 1),
+        Ok("Hello world!".to_string())
+    );
+
+    assert_eq!(
+        model.get_cell_content(0, 2, 1),
+        Ok(r#"=CONCATENATE(newName," world!")"#.to_string())
+    );
+}
+
+#[test]
+fn rename_defined_name_operations() {
+    let mut model = UserModel::new_empty("model", "en", "UTC").unwrap();
+    model.set_user_input(0, 1, 1, "42").unwrap();
+    model.set_user_input(0, 1, 2, "123").unwrap();
+
+    model
+        .new_defined_name("answer", None, "Sheet1!$A$1")
+        .unwrap();
+
+    model
+        .set_user_input(0, 2, 1, "=IF(answer<2, answer*2, answer^2)")
+        .unwrap();
+
+    model
+        .set_user_input(0, 3, 1, "=badDunction(-answer)")
+        .unwrap();
+
+    model.new_sheet().unwrap();
+    model.set_user_input(1, 1, 1, "78").unwrap();
+    model
+        .new_defined_name("answer", Some(1), "Sheet1!$A$1")
+        .unwrap();
+
+    model.set_user_input(1, 3, 1, "=answer").unwrap();
+
+    model
+        .update_defined_name("answer", None, "respuesta", None, "Sheet1!$A$1")
+        .unwrap();
+
+    assert_eq!(
+        model.get_cell_content(0, 2, 1),
+        Ok("=IF(respuesta<2,respuesta*2,respuesta^2)".to_string())
+    );
+
+    assert_eq!(
+        model.get_cell_content(0, 3, 1),
+        Ok("=badDunction(-respuesta)".to_string())
+    );
+
+    // A defined name with the same name but different scope
+    assert_eq!(model.get_cell_content(1, 3, 1), Ok("=answer".to_string()));
+}
+
+#[test]
+fn rename_defined_name_string_operations() {
+    let mut model = UserModel::new_empty("model", "en", "UTC").unwrap();
+    model.set_user_input(0, 1, 1, "Hello").unwrap();
+    model.set_user_input(0, 1, 2, "World").unwrap();
+
+    model
+        .new_defined_name("hello", None, "Sheet1!$A$1")
+        .unwrap();
+
+    model
+        .new_defined_name("world", None, "Sheet1!$B$1")
+        .unwrap();
+
+    model.set_user_input(0, 2, 1, "=hello&world").unwrap();
+
+    model
+        .update_defined_name("hello", None, "HolaS", None, "Sheet1!$A$1")
+        .unwrap();
+
+    assert_eq!(
+        model.get_cell_content(0, 2, 1),
+        Ok("=HolaS&world".to_string())
+    );
+}
+
+#[test]
+fn invalid_names() {
+    let mut model = UserModel::new_empty("model", "en", "UTC").unwrap();
+    model.set_user_input(0, 1, 1, "Hello").unwrap();
+    model
+        .new_defined_name("MyName", None, "Sheet1!$A$1")
+        .unwrap();
+
+    // spaces
+    assert_eq!(
+        model.new_defined_name("A real", None, "Sheet1!$A$1"),
+        Err("Invalid defined name".to_string())
+    );
+
+    // Starts with number
+    assert_eq!(
+        model.new_defined_name("2real", None, "Sheet1!$A$1"),
+        Err("Invalid defined name".to_string())
+    );
+
+    // Updating also fails
+    assert_eq!(
+        model.update_defined_name("MyName", None, "My Name", None, "Sheet1!$A$1"),
+        Err("Invalid defined name".to_string())
+    );
+}
+
+#[test]
+fn already_existing() {
+    let mut model = UserModel::new_empty("model", "en", "UTC").unwrap();
+
+    model
+        .new_defined_name("MyName", None, "Sheet1!$A$1")
+        .unwrap();
+    model
+        .new_defined_name("Another", None, "Sheet1!$A$1")
+        .unwrap();
+
+    // Can't create a new name with the same name
+    assert_eq!(
+        model.new_defined_name("MyName", None, "Sheet1!$A$2"),
+        Err("Defined name already exists".to_string())
+    );
+
+    // Can't update one into an existing
+    assert_eq!(
+        model.update_defined_name("Another", None, "MyName", None, "Sheet1!$A$1"),
+        Err("Defined name already exists".to_string())
+    );
+}
+
+#[test]
+fn invalid_sheet() {
+    let mut model = UserModel::new_empty("model", "en", "UTC").unwrap();
+    model.set_user_input(0, 1, 1, "Hello").unwrap();
+    model
+        .new_defined_name("MyName", None, "Sheet1!$A$1")
+        .unwrap();
+
+    assert_eq!(
+        model.new_defined_name("Mything", Some(2), "Sheet1!$A$1"),
+        Err("Invalid sheet index".to_string())
+    );
+
+    assert_eq!(
+        model.update_defined_name("MyName", None, "MyName", Some(2), "Sheet1!$A$1"),
+        Err("Invalid sheet index".to_string())
+    );
+
+    assert_eq!(
+        model.update_defined_name("MyName", Some(9), "YourName", None, "Sheet1!$A$1"),
+        Err("Invalid sheet index".to_string())
+    );
+}
+
+#[test]
+fn invalid_formula() {
+    let mut model = UserModel::new_empty("model", "en", "UTC").unwrap();
+    model.set_user_input(0, 1, 1, "Hello").unwrap();
+    model.new_defined_name("MyName", None, "A1").unwrap();
+
+    model.set_user_input(0, 1, 2, "=MyName").unwrap();
+
+    assert_eq!(
+        model.get_formatted_cell_value(0, 1, 2),
+        Ok("#NAME?".to_string())
+    );
+}
+
+#[test]
+fn undo_redo() {
+    let mut model = UserModel::new_empty("model", "en", "UTC").unwrap();
+    model.set_user_input(0, 1, 1, "Hello").unwrap();
+    model.set_user_input(0, 2, 1, "Hola").unwrap();
+    model.set_user_input(0, 1, 2, r#"=MyName&"!""#).unwrap();
+
+    model
+        .new_defined_name("MyName", None, "Sheet1!$A$1")
+        .unwrap();
+
+    assert_eq!(
+        model.get_formatted_cell_value(0, 1, 2),
+        Ok("Hello!".to_string())
+    );
+    model.undo().unwrap();
+    assert_eq!(model.get_defined_name_list().len(), 0);
+    assert_eq!(
+        model.get_formatted_cell_value(0, 1, 2),
+        Ok("#NAME?".to_string())
+    );
+    model.redo().unwrap();
+
+    assert_eq!(model.get_defined_name_list().len(), 1);
+    assert_eq!(
+        model.get_formatted_cell_value(0, 1, 2),
+        Ok("Hello!".to_string())
+    );
+
+    model
+        .update_defined_name("MyName", None, "MyName", None, "Sheet1!$A$2")
+        .unwrap();
+    assert_eq!(model.get_defined_name_list().len(), 1);
+    assert_eq!(
+        model.get_formatted_cell_value(0, 1, 2),
+        Ok("Hola!".to_string())
+    );
+    model.undo().unwrap();
+
+    assert_eq!(model.get_defined_name_list().len(), 1);
+    assert_eq!(
+        model.get_formatted_cell_value(0, 1, 2),
+        Ok("Hello!".to_string())
+    );
+
+    model.redo().unwrap();
+
+    assert_eq!(model.get_defined_name_list().len(), 1);
+    assert_eq!(
+        model.get_formatted_cell_value(0, 1, 2),
+        Ok("Hola!".to_string())
+    );
+
+    let send_queue = model.flush_send_queue();
+
+    let mut model2 = UserModel::new_empty("model", "en", "UTC").unwrap();
+    model2.apply_external_diffs(&send_queue).unwrap();
+
+    assert_eq!(model2.get_defined_name_list().len(), 1);
+    assert_eq!(
+        model2.get_formatted_cell_value(0, 1, 2),
+        Ok("Hola!".to_string())
+    );
+}

base/src/test/user_model/test_general.rs

@@ -91,7 +91,6 @@ fn insert_remove_columns() {
     let mut model = UserModel::from_model(model);
     // column E
     let column_width = model.get_column_width(0, 5).unwrap();
-    println!("{column_width}");
 
     // Insert some data in row 5 (and change the style) in E1
     assert!(model.set_user_input(0, 1, 5, "100$").is_ok());

base/src/test/user_model/test_sheet_state.rs

@@ -0,0 +1,57 @@
+#![allow(clippy::unwrap_used)]
+
+use crate::test::util::new_empty_model;
+use crate::UserModel;
+
+#[test]
+fn basic_tests() {
+    let model = new_empty_model();
+    let mut model = UserModel::from_model(model);
+
+    // add three more sheets
+    model.new_sheet().unwrap();
+    model.new_sheet().unwrap();
+    model.new_sheet().unwrap();
+
+    let info = model.get_worksheets_properties();
+    assert_eq!(info.len(), 4);
+    for sheet in &info {
+        assert_eq!(sheet.state, "visible".to_string());
+    }
+
+    model.set_selected_sheet(2).unwrap();
+    assert_eq!(info.get(2).unwrap().name, "Sheet3".to_string());
+
+    model.hide_sheet(2).unwrap();
+
+    let info = model.get_worksheets_properties();
+    assert_eq!(model.get_selected_sheet(), 3);
+    assert_eq!(info.get(2).unwrap().state, "hidden".to_string());
+
+    model.undo().unwrap();
+    let info = model.get_worksheets_properties();
+    assert_eq!(info.get(2).unwrap().state, "visible".to_string());
+    model.redo().unwrap();
+    let info = model.get_worksheets_properties();
+    assert_eq!(info.get(2).unwrap().state, "hidden".to_string());
+
+    model.set_selected_sheet(3).unwrap();
+    model.hide_sheet(3).unwrap();
+    assert_eq!(model.get_selected_sheet(), 0);
+
+    model.unhide_sheet(2).unwrap();
+    model.unhide_sheet(3).unwrap();
+
+    let info = model.get_worksheets_properties();
+    assert_eq!(info.len(), 4);
+    for sheet in &info {
+        assert_eq!(sheet.state, "visible".to_string());
+    }
+
+    model.undo().unwrap();
+    let info = model.get_worksheets_properties();
+    assert_eq!(info.get(3).unwrap().state, "hidden".to_string());
+    model.redo().unwrap();
+    let info = model.get_worksheets_properties();
+    assert_eq!(info.get(3).unwrap().state, "visible".to_string());
+}

base/src/units.rs

@@ -293,7 +293,9 @@ impl Model {
             Node::EmptyArgKind => None,
             Node::InvalidFunctionKind { .. } => None,
             Node::ArrayKind(_) => None,
-            Node::VariableKind(_) => None,
+            Node::DefinedNameKind(_) => None,
+            Node::TableNameKind(_) => None,
+            Node::WrongVariableKind(_) => None,
             Node::CompareKind { .. } => None,
             Node::OpPowerKind { .. } => None,
         }

base/src/user_model/common.rs

@@ -13,8 +13,8 @@ use crate::{
     },
     model::Model,
     types::{
-        Alignment, BorderItem, CellType, Col, HorizontalAlignment, SheetProperties, Style,
-        VerticalAlignment,
+        Alignment, BorderItem, CellType, Col, HorizontalAlignment, SheetProperties, SheetState,
+        Style, VerticalAlignment,
     },
     utils::is_valid_hex_color,
 };
@@ -440,6 +440,48 @@ impl UserModel {
         Ok(())
     }
 
+    /// Hides sheet by index
+    ///
+    /// See also:
+    /// * [Model::set_sheet_state]
+    /// * [UserModel::unhide_sheet]
+    pub fn hide_sheet(&mut self, sheet: u32) -> Result<(), String> {
+        let sheet_count = self.model.workbook.worksheets.len() as u32;
+        for index in 1..sheet_count {
+            let sheet_index = (sheet + index) % sheet_count;
+            if self.model.workbook.worksheet(sheet_index)?.state == SheetState::Visible {
+                if let Some(view) = self.model.workbook.views.get_mut(&self.model.view_id) {
+                    view.sheet = sheet_index;
+                };
+                break;
+            }
+        }
+        let old_value = self.model.workbook.worksheet(sheet)?.state.clone();
+        self.push_diff_list(vec![Diff::SetSheetState {
+            index: sheet,
+            new_value: SheetState::Hidden,
+            old_value,
+        }]);
+        self.model.set_sheet_state(sheet, SheetState::Hidden)?;
+        Ok(())
+    }
+
+    /// Un hides sheet by index
+    ///
+    /// See also:
+    /// * [Model::set_sheet_state]
+    /// * [UserModel::hide_sheet]
+    pub fn unhide_sheet(&mut self, sheet: u32) -> Result<(), String> {
+        let old_value = self.model.workbook.worksheet(sheet)?.state.clone();
+        self.push_diff_list(vec![Diff::SetSheetState {
+            index: sheet,
+            new_value: SheetState::Visible,
+            old_value,
+        }]);
+        self.model.set_sheet_state(sheet, SheetState::Visible)?;
+        Ok(())
+    }
+
     /// Sets sheet color
     ///
     /// Note: an empty string will remove the color
@@ -1692,6 +1734,68 @@ impl UserModel {
         Ok(())
     }
 
+    /// Returns the list of defined names
+    pub fn get_defined_name_list(&self) -> Vec<(String, Option<u32>, String)> {
+        self.model.workbook.get_defined_names_with_scope()
+    }
+
+    /// Delete an existing defined name
+    pub fn delete_defined_name(&mut self, name: &str, scope: Option<u32>) -> Result<(), String> {
+        let old_value = self.model.get_defined_name_formula(name, scope)?;
+        let diff_list = vec![Diff::DeleteDefinedName {
+            name: name.to_string(),
+            scope,
+            old_value,
+        }];
+        self.push_diff_list(diff_list);
+        self.model.delete_defined_name(name, scope)?;
+        self.evaluate_if_not_paused();
+        Ok(())
+    }
+
+    /// Create a new defined name
+    pub fn new_defined_name(
+        &mut self,
+        name: &str,
+        scope: Option<u32>,
+        formula: &str,
+    ) -> Result<(), String> {
+        self.model.new_defined_name(name, scope, formula)?;
+        let diff_list = vec![Diff::CreateDefinedName {
+            name: name.to_string(),
+            scope,
+            value: formula.to_string(),
+        }];
+        self.push_diff_list(diff_list);
+        self.evaluate_if_not_paused();
+        Ok(())
+    }
+
+    /// Updates a defined name
+    pub fn update_defined_name(
+        &mut self,
+        name: &str,
+        scope: Option<u32>,
+        new_name: &str,
+        new_scope: Option<u32>,
+        new_formula: &str,
+    ) -> Result<(), String> {
+        let old_formula = self.model.get_defined_name_formula(name, scope)?;
+        let diff_list = vec![Diff::UpdateDefinedName {
+            name: name.to_string(),
+            scope,
+            old_formula: old_formula.to_string(),
+            new_name: new_name.to_string(),
+            new_scope,
+            new_formula: new_formula.to_string(),
+        }];
+        self.push_diff_list(diff_list);
+        self.model
+            .update_defined_name(name, scope, new_name, new_scope, new_formula)?;
+        self.evaluate_if_not_paused();
+        Ok(())
+    }
+
     // **** Private methods ****** //
 
     fn push_diff_list(&mut self, diff_list: DiffList) {
@@ -1862,6 +1966,41 @@ impl UserModel {
                 } => {
                     self.model.set_show_grid_lines(*sheet, *old_value)?;
                 }
+                Diff::CreateDefinedName {
+                    name,
+                    scope,
+                    value: _,
+                } => {
+                    self.model.delete_defined_name(name, *scope)?;
+                }
+                Diff::DeleteDefinedName {
+                    name,
+                    scope,
+                    old_value,
+                } => {
+                    self.model.new_defined_name(name, *scope, old_value)?;
+                }
+                Diff::UpdateDefinedName {
+                    name,
+                    scope,
+                    old_formula,
+                    new_name,
+                    new_scope,
+                    new_formula: _,
+                } => {
+                    self.model.update_defined_name(
+                        new_name,
+                        *new_scope,
+                        name,
+                        *scope,
+                        old_formula,
+                    )?;
+                }
+                Diff::SetSheetState {
+                    index,
+                    old_value,
+                    new_value: _,
+                } => self.model.set_sheet_state(*index, old_value.clone())?,
             }
         }
         if needs_evaluation {
@@ -1989,6 +2128,33 @@ impl UserModel {
                 } => {
                     self.model.set_show_grid_lines(*sheet, *new_value)?;
                 }
+                Diff::CreateDefinedName { name, scope, value } => {
+                    self.model.new_defined_name(name, *scope, value)?
+                }
+                Diff::DeleteDefinedName {
+                    name,
+                    scope,
+                    old_value: _,
+                } => self.model.delete_defined_name(name, *scope)?,
+                Diff::UpdateDefinedName {
+                    name,
+                    scope,
+                    old_formula: _,
+                    new_name,
+                    new_scope,
+                    new_formula,
+                } => self.model.update_defined_name(
+                    name,
+                    *scope,
+                    new_name,
+                    *new_scope,
+                    new_formula,
+                )?,
+                Diff::SetSheetState {
+                    index,
+                    old_value: _,
+                    new_value,
+                } => self.model.set_sheet_state(*index, new_value.clone())?,
             }
         }
 

base/src/user_model/history.rs

@@ -2,7 +2,7 @@ use std::collections::HashMap;
 
 use bitcode::{Decode, Encode};
 
-use crate::types::{Cell, Col, Row, Style};
+use crate::types::{Cell, Col, Row, SheetState, Style};
 
 #[derive(Clone, Encode, Decode)]
 pub(crate) struct RowData {
@@ -104,11 +104,35 @@ pub(crate) enum Diff {
         old_value: String,
         new_value: String,
     },
+    SetSheetState {
+        index: u32,
+        old_value: SheetState,
+        new_value: SheetState,
+    },
     SetShowGridLines {
         sheet: u32,
         old_value: bool,
         new_value: bool,
-    }, // FIXME: we are missing SetViewDiffs
+    },
+    CreateDefinedName {
+        name: String,
+        scope: Option<u32>,
+        value: String,
+    },
+    DeleteDefinedName {
+        name: String,
+        scope: Option<u32>,
+        old_value: String,
+    },
+    UpdateDefinedName {
+        name: String,
+        scope: Option<u32>,
+        old_formula: String,
+        new_name: String,
+        new_scope: Option<u32>,
+        new_formula: String,
+    },
+    // FIXME: we are missing SetViewDiffs
 }
 
 pub(crate) type DiffList = Vec<Diff>;

base/src/workbook.rs

@@ -27,4 +27,27 @@ impl Workbook {
             .get_mut(worksheet_index as usize)
             .ok_or_else(|| "Invalid sheet index".to_string())
     }
+
+    /// Returns the a list of defined names in the workbook with their scope
+    pub(crate) fn get_defined_names_with_scope(&self) -> Vec<(String, Option<u32>, String)> {
+        let sheet_id_index: Vec<u32> = self.worksheets.iter().map(|s| s.sheet_id).collect();
+
+        let defined_names = self
+            .defined_names
+            .iter()
+            .map(|dn| {
+                let index = dn
+                    .sheet_id
+                    .and_then(|sheet_id| {
+                        // returns an Option<usize>
+                        sheet_id_index.iter().position(|&x| x == sheet_id)
+                    })
+                    // convert Option<usize> to Option<u32>
+                    .map(|pos| pos as u32);
+
+                (dn.name.clone(), index, dn.formula.clone())
+            })
+            .collect::<Vec<_>>();
+        defined_names
+    }
 }

bindings/wasm/fix_types.py

@@ -187,6 +187,20 @@ paste_from_clipboard_types = r"""
   pasteFromClipboard(source_sheet: number, source_range: [number, number, number, number], clipboard: ClipboardData, is_cut: boolean): void;
 """
 
+defined_name_list = r"""
+/**
+* @returns {any}
+*/
+  getDefinedNameList(): any;
+"""
+
+defined_name_list_types = r"""
+/**
+* @returns {DefinedName[]}
+*/
+  getDefinedNameList(): DefinedName[];
+"""
+
 def fix_types(text):
     text = text.replace(get_tokens_str, get_tokens_str_types)
     text = text.replace(update_style_str, update_style_str_types)
@@ -200,6 +214,7 @@ def fix_types(text):
     text = text.replace(paste_csv_string, paste_csv_string_types)
     text = text.replace(clipboard, clipboard_types)
     text = text.replace(paste_from_clipboard, paste_from_clipboard_types)
+    text = text.replace(defined_name_list, defined_name_list_types)
     with open("types.ts") as f:
         types_str = f.read()
         header_types = "{}\n\n{}".format(header, types_str)

bindings/wasm/src/lib.rs

@@ -1,3 +1,4 @@
+use serde::Serialize;
 use wasm_bindgen::{
     prelude::{wasm_bindgen, JsError},
     JsValue,
@@ -29,6 +30,13 @@ pub fn column_name_from_number(column: i32) -> Result<String, JsError> {
     }
 }
 
+#[derive(Serialize)]
+struct DefinedName {
+    name: String,
+    scope: Option<u32>,
+    formula: String,
+}
+
 #[wasm_bindgen]
 pub struct Model {
     model: BaseModel,
@@ -106,6 +114,16 @@ impl Model {
         self.model.delete_sheet(sheet).map_err(to_js_error)
     }
 
+    #[wasm_bindgen(js_name = "hideSheet")]
+    pub fn hide_sheet(&mut self, sheet: u32) -> Result<(), JsError> {
+        self.model.hide_sheet(sheet).map_err(to_js_error)
+    }
+
+    #[wasm_bindgen(js_name = "unhideSheet")]
+    pub fn unhide_sheet(&mut self, sheet: u32) -> Result<(), JsError> {
+        self.model.unhide_sheet(sheet).map_err(to_js_error)
+    }
+
     #[wasm_bindgen(js_name = "renameSheet")]
     pub fn rename_sheet(&mut self, sheet: u32, name: &str) -> Result<(), JsError> {
         self.model.rename_sheet(sheet, name).map_err(to_js_error)
@@ -542,4 +560,52 @@ impl Model {
             .paste_csv_string(&range, csv)
             .map_err(|e| to_js_error(e.to_string()))
     }
+
+    #[wasm_bindgen(js_name = "getDefinedNameList")]
+    pub fn get_defined_name_list(&self) -> Result<JsValue, JsError> {
+        let data: Vec<DefinedName> = self
+            .model
+            .get_defined_name_list()
+            .iter()
+            .map(|s| DefinedName {
+                name: s.0.to_owned(),
+                scope: s.1,
+                formula: s.2.to_owned(),
+            })
+            .collect();
+        serde_wasm_bindgen::to_value(&data).map_err(|e| to_js_error(e.to_string()))
+    }
+
+    #[wasm_bindgen(js_name = "newDefinedName")]
+    pub fn new_defined_name(
+        &mut self,
+        name: &str,
+        scope: Option<u32>,
+        formula: &str,
+    ) -> Result<(), JsError> {
+        self.model
+            .new_defined_name(name, scope, formula)
+            .map_err(|e| to_js_error(e.to_string()))
+    }
+
+    #[wasm_bindgen(js_name = "updateDefinedName")]
+    pub fn update_defined_name(
+        &mut self,
+        name: &str,
+        scope: Option<u32>,
+        new_name: &str,
+        new_scope: Option<u32>,
+        new_formula: &str,
+    ) -> Result<(), JsError> {
+        self.model
+            .update_defined_name(name, scope, new_name, new_scope, new_formula)
+            .map_err(|e| to_js_error(e.to_string()))
+    }
+
+    #[wasm_bindgen(js_name = "deleteDefinedName")]
+    pub fn delete_definedname(&mut self, name: &str, scope: Option<u32>) -> Result<(), JsError> {
+        self.model
+            .delete_defined_name(name, scope)
+            .map_err(|e| to_js_error(e.to_string()))
+    }
 }

bindings/wasm/types.ts

@@ -113,6 +113,7 @@ export interface WorksheetProperties {
   name: string;
   color: string;
   sheet_id: number;
+  state: string;
 }
 
 interface CellStyleFill {
@@ -226,4 +227,10 @@ export interface Clipboard {
   csv: string;
   data: ClipboardData;
   range: [number, number, number, number];
+}
+
+export interface DefinedName {
+  name: string;
+  scope?: number;
+  formula: string;
 }

docs/src/.vitepress/config.mts

@@ -58,6 +58,18 @@ export default defineConfig({
             text: "Error Types",
             link: "/features/error-types",
           },
+          {
+            text: "Value Types",
+            link: "/features/value-types",
+          },
+          {
+            text: "Optional Arguments",
+            link: "/features/optional-arguments",
+          },
+          {
+            text: "Units",
+            link: "/features/units",
+          },		  
           {
             text: "Unsupported Features",
             link: "/features/unsupported-features",

docs/src/features/error-types.md

@@ -7,31 +7,39 @@ lang: en-US
 # Error Types
 
 ::: warning
-**Note:** This page is in construction 🚧
+**Note:** This draft page is under construction 🚧
 :::
 
-When working with formulas, you may encounter these common errors:
+The result of a formula is sometimes an _error_. In some situations those errors are expected and your formulas might be dealing with them.
+The error `#N/A` might signal that there is no data to evaluate the formula yet. Maybe the payroll has not been introduced for that month just yet.
 
----
+Some other errors like `#SPILL!`, `#CIRC!` or `#ERROR!` signal an error in your spreadsheet logic and must be corrected.
 
-### **`#ERROR!`**
+The first kind of errors or 'common errors' are found in other spreadsheet engines like Excel while other errors like `#ERROR!` or `#N/IMPL` are particular to IronCalc.
 
-**Cause:** General formula issue, like syntax errors or invalid references.  
-**Fix:** Check the formula for mistakes or invalid cell references.
-
----
+## Common Errors
 
 ### **`#VALUE!`**
 
-**Cause:** Mismatched data types (e.g., text used where numbers are expected).  
-**Fix:** Ensure input types are correct; convert text to numbers if needed.
+It might be caused by mismatched data types (e.g., text used where numbers are expected):
 
----
+```
+=5+"two"
+```
+
+The engine doesn't know how to add the number `5` to the string `two` resulting in a `#VALUE!`.
+
+It is an actual error in your spreadsheet. It indicates that the formula isn’t working as intended.
 
 ### **`#DIV/0!`**
 
-**Cause:** Division by zero or an empty cell.  
-**Fix:** Ensure the denominator isn’t zero or blank. Use `IF` to handle such cases:
+Division by zero or an empty cell:
+
+```
+=1/0
+```
+
+Usually this is an error. However, in cases where a denominator might be blank (e.g., data not yet filled in), this could be expected. Use `IFERROR` or `IF` to handle it:
 
 ```
 =IF(B1=0, "N/A", A1/B1)
@@ -39,23 +47,42 @@ When working with formulas, you may encounter these common errors:
 
 ### **`#NAME?`**
 
-**Cause:** Unrecognized text in the formula (e.g., misspelled function names or undefined named ranges).  
-**Fix:** Correct spelling or define the missing name.
+Found when a name is not recognized. Maybe a misspelled name for a function or a reference to a previously defined name that has since been deleted:
+
+```
+=UNKNOWN_FUNCTION(A1)
+```
+
+This indicates an error in your spreadsheet logic.
 
 ### **`#REF!`**
 
-**Cause:** Invalid cell reference, often from deleting cells used in a formula.  
-**Fix:** Update the formula with correct references.
+Indicates an invalid cell reference, often from deleting cells used in a formula.
+
+They can appear as a result of a computation or in a formula. Example:
+
+```
+=Sheet34!A1
+```
+
+If `Sheet34` doesn't exist it will return `#REF!`
+
+This is a genuine error. It indicates that part of your formula references a cell or range that is missing.
 
 ### **`#NUM!`**
 
-**Cause:** Invalid numeric operation (e.g., calculating a square root of a negative number).  
-**Fix:** Adjust the formula to ensure valid numeric operations.
+Invalid numeric operation (e.g., calculating the square root of a negative number).  
+Adjust the formula to ensure valid numeric operations.
+
+Sometimes a `#NUM!` error might be expected, signalling to the user that some parameter is out of scope.
 
 ### **`#N/A`**
 
-**Cause:** A value is not available, often in lookup functions like VLOOKUP.  
-**Fix:** Ensure the lookup value exists or use IFNA() to handle missing values:
+A value is not available, often in lookup functions like VLOOKUP.
+
+This is frequently not an error in your spreadsheet logic.
+
+You can produce a prettier answer using the [`IFNA`](/functions/information/isna) formula:
 
 ```
 =IFNA(VLOOKUP(A1, B1:C10, 2, FALSE), "Not Found")
@@ -63,17 +90,62 @@ When working with formulas, you may encounter these common errors:
 
 ### **`#NULL!`**
 
-**Cause:** Incorrect range operator in a formula (e.g., missing a colon between cell references).  
-**Fix:** Use correct range operators (e.g., A1:A10).
+Incorrect range operator in a formula (e.g., missing a colon between cell references).
 
+### **`#SPILL!`**
+
+A cell in a formula will overwrite content in other cells.
+This cannot happen right now in IronCalc as formulas don't spill yet.
 
 ### **`#CIRC!`**
 
-**Cause:** Circular reference.  
-**Fix:** Remove the circular reference.
+Circular reference. This is an error in your spreadsheet and must be fixed.
+It means that during the course of a computation, a circular dependency was found.
+
+A circular dependency is a dependency of a formula on itself.
+
+For instance, in the cell `A1` the formula `=A1*2` is a circular dependency.
+
+Other spreadsheet engines use circular dependencies to do "loop computations", run "sensitivity analysis" or "goal seek".
+
+IronCalc doesn't support any of those at the moment.
+
+## IronCalc specific errors
+
+### **`#ERROR!`**
+
+General formula issue, like syntax errors or invalid references.
+In general, Excel does not let you enter incorrect formulas, but IronCalc will.
+
+This will make your workbook imcompatible with Excel.
+
+Typical examples might be an incomplete formula, such as `=A1+`, or a function call with too few arguments, such as `=FV(1,2)`.
+
+### **`#N/IMPL!`**
+
+A particular feature is not yet implemented in IronCalc
+
+Check if there is a [Github](https://github.com/ironcalc) ticket or contact us via [email](mailto:hello@ironcalc.com) or [Discord](https://discord.com/invite/zZYWfh3RHJ).
+
+## Error propagation
+
+Some errors are created by some formulas. For instance, the function `SQRT` can create the error `#NUM!`, but can't ceate the error `#DIV/0`.
+
+Once an error is created it is normally _propagated_ by all the formulas. So if cell `C3` evaluates to `#ERROR!`, then the formula
+`=SQRT(C3)` will return `#ERROR!`.
+
+Not all functions propagate errors in their arguments. For instance the function `IF(condition, if_true, if_false)` will only propagate an error in the `if_false` argument if the `condition` is `FALSE`. This is called _lazy evaluation_ - the function `IF` is _lazy_ because it only evaluates the arguments when needed. The opposite of lazy evaulaution is called _eager evaluation_.
+
+Some functions also expect an error as an argument like [`ERROR.TYPE`](/functions/information/error.type) and will not propagate the error.
 
 
-### **`#####`**
+## See also
 
-**Cause:** The column isn’t wide enough to display the value.  
-**Fix:** Resize the column width to fit the content.
+The following functions are convenient when working with errors
+
+- [`ISERR(ref)`](/functions/information/iserr), `TRUE` if `ref` is any error type except the `#N/A` error.
+- [`ISERROR(ref)`](/functions/information/iserror), `TRUE` if `ref` is any error.
+- [`ISNA(ref)`](/functions/information/isna), `TRUE` if ref is `#N/A`.
+- [`ERROR.TYPE`](/functions/information/error.type) returns the numeric code for a given error.
+- [`IFERROR(ref, value)`](/functions/logical/iferror) returns `value` if the content of `ref` is an error.
+- [`IFNA(ref, value)`](/functions/logical/ifna) returns `value` only if the content of `ref` is the `#N/A` error.

docs/src/features/optional-arguments.md

@@ -0,0 +1,49 @@
+---
+layout: doc
+outline: deep
+lang: en-US
+---
+
+# Optional Arguments
+
+::: warning
+**Note:** This draft page is under construction 🚧
+:::
+
+Any IronCalc function may accept zero, one or more arguments, which are values passed to the function when it is called from a spreadsheet formula.
+
+Many function arguments are _required_. For such arguments, always pass a suitable value in the function call.
+
+Some function arguments are _optional_. Optional arguments need not be passed in the function call and, in such cases, the function instead uses a predefined default value.
+
+Consider a notional function called _FN\_NAME_, with the following syntax:
+
+<p style="font-weight:bold;text-align:center;">FN_NAME(<span title="Number" style="color:#1E88E5">arg1</span>, <span title="Number" style="color:#1E88E5">arg2</span>, <span title="Number" style="color:#1E88E5">arg3</span>, <span title="Number" style="color:#1E88E5">arg4</span>=def1, <span title="Number" style="color:#1E88E5">arg5</span>=def2,  <span title="Number" style="color:#1E88E5">arg6</span>=def3) => <span title="Number" style="color:#1E88E5" >fn_name</span></p>
+
+Notes about this syntax:
+
+* _FN_NAME_ is a function that takes six arguments (_arg1_, _arg2_, _arg3_, _arg4_, _arg5_ and _arg6_) and returns a value referred to as _fn_name_.
+* For convenience in this case, all arguments and the returned value are colour-coded to indicate that they are numbers.
+* Arguments _arg1_, _arg2_ and _arg3_ are <u>required</u> arguments and this would normally be stated in the **Argument descriptions** section of the function's description page.
+* Arguments _arg4_, _arg5_ and _arg6_ are <u>optional</u> arguments and again this would normally be stated in the **Argument descriptions** section of the function's description page. In addition, optional arguments are usually indicated by the specification of a default value in the syntax. 
+   * If _arg4_ is omitted, then the value _def1_ is assumed.
+   * If _arg5_ is omitted, then the value _def2_ is assumed. 
+   * If _arg6_ is omitted, then the value _def3_ is assumed.
+
+With this syntax, the following would all be valid calls to the _FN_NAME_ function:
+
+**=FN\_NAME(1,2,3)**. All optional arguments omitted.
+
+**=FN\_NAME(1,2,3,4)**. _arg4_ set to 4; optional arguments _arg5_ and _arg6_ assume default values.
+
+**=FN\_NAME(1,2,3,,5)**.  _arg5_ set to 5; optional arguments _arg4_ and _arg6_ assume  default values.
+
+**=FN\_NAME(1,2,3,,,6)**. _arg6_ set to 6; optional arguments _arg4_ and _arg5_ assume  default values.
+
+**=FN\_NAME(1,2,3,4,5)**. _arg4_ and  _arg5_ set to 4 and 5 respectively; optional argument _arg6_ assumes default value.
+
+**=FN\_NAME(1,2,3,4,,6)**. _arg4_ and _arg6_ set to 4 and 6 respectively; optional argument _arg5_ assumes default value.
+
+**=FN\_NAME(1,2,3,,5,6)**. _arg5_ and _arg6_ set to 5 and 6 respectively; optional argument _arg4_ assumes default value.
+
+**=FN\_NAME(1,2,3,4,5,6)**. Values passed for all optional arguments.

docs/src/features/units.md

@@ -0,0 +1,13 @@
+---
+layout: doc
+outline: deep
+lang: en-US
+---
+
+# Units
+
+::: warning
+**Note:** This draft page is under construction 🚧
+:::
+
+Some IronCalc functions return values that have units like currencies, percentage or dates.

docs/src/features/value-types.md

@@ -0,0 +1,69 @@
+---
+layout: doc
+outline: deep
+lang: en-US
+---
+
+# Value Types
+
+::: warning
+**Note:** This draft page is under construction 🚧
+:::
+
+In IronCalc a value, a result of a calculation, can be one of the following.
+
+## Numbers
+
+Numbers in IronCalc are [IEEE 754 double-precision](https://en.wikipedia.org/wiki/Double-precision_floating-point_format).
+
+Numbers are only displayed up to 15 significant figures. That's why `=0.1+0.2` gives  `0.3`.
+
+Also, numbers are compared up to 15 significant figures. So `=IF(0.1+0.2=0.3, "Valid", "Invalid")` gives `Valid`.
+
+However, `=0.3-0.2-0.1` will not give exactly `0` in IronCalc.
+
+### Casting into numbers
+
+Strings and booleans are sometimes converted to numbers:
+
+`=1+"2"` => `3`
+
+Some functions cast in weird ways:
+
+`=SUM(1,TRUE)` => `1` and `=SUM(1,"1")` => `1`
+
+And `=SUM(1,A1)` => `1` (where A1 contains `TRUE` or `"1"`)
+
+
+Sometimes the conversion happens as might be expected. For example, `="123"+1` is `124`, `=SQRT("4")` is `2` and `=SQRT(TRUE)` is `1`.
+
+Some functions, however, are more strict. For example, `=BIN2DEC(TRUE)` gives the #VALUE! error.
+
+### Dates and times
+
+IronCalc uses numbers to represent dates and times.
+
+The integer part of the number represents the date, as a count of days since the fixed starting date of December 30, 1899.
+
+The fractional part of the number represents the time of day. 0.0 corresponds to 00:00:00 (midnight) and 0.5 corresponds to 12:00:00 (noon).
+
+## Strings
+
+
+### Complex numbers
+
+Using IronCalc, a complex number is a string of the form "1+j3".
+
+
+## Booleans
+
+### Casting from numbers
+
+## Errors
+
+
+### Casting from strings
+
+"#N/A" => #N/A
+
+## Arrays

docs/src/functions/financial/fv.md

@@ -3,8 +3,10 @@ layout: doc
 outline: deep
 lang: en-US
 ---
-
 # FV function
+::: warning
+**Note:** This draft page is under construction 🚧
+:::
 ## Overview
 FV (<u>F</u>uture <u>V</u>alue) is a function of the Financial category that can be used to predict the future value of an investment or asset based on its present value.
 
@@ -13,34 +15,38 @@ FV can be used to calculate future value over a specified number of compounding
 If your interest rate varies between periods, use the [FVSCHEDULE](/functions/financial/fvschedule) function instead of FV.
 ## Usage
 ### Syntax
-**FV(rate, nper, pmt, pv, type)**
+**FV(<span title="Number" style="color:#1E88E5">rate</span>, <span title="Number" style="color:#1E88E5">nper</span>, <span title="Number" style="color:#1E88E5">pmt</span>, <span title="Number" style="color:#1E88E5">pv</span>=0, <span title="Boolean" style="color:#43A047">type</span>=FALSE) => <span title="Number" style="color:#1E88E5">fv</span>**
 ### Argument descriptions
-* *rate*. The fixed percentage interest rate or yield per period.
-* *nper*. The number of compounding periods to be taken into account. While this will often be an integer, non-integer values are accepted and processed.
-* *pmt*. The fixed amount paid or deposited each compounding period.
-* *pv* (optional). The present value or starting amount of the asset (default 0).
-* *type* (optional). A logical value indicating whether the payment due dates are at the end (0) of the compounding periods or at the beginning (any non-zero value). The default is 0 when omitted.
+* *rate* ([number](/features/value-types#numbers), required). The fixed percentage interest rate or yield per period.
+* *nper* ([number](/features/value-types#numbers), required). "nper" stands for <u>n</u>umber of <u>per</u>iods, in this case the number of compounding periods to be taken into account. While this will often be an integer, non-integer values are accepted and processed.
+* *pmt* ([number](/features/value-types#numbers), required). "pmt" stands for <u>p</u>ay<u>m</u>en<u>t</u>, in this case the fixed amount paid or deposited each compounding period. 
+* *pv* ([number](/features/value-types#numbers), [optional](/features/optional-arguments.md)). "pv" is the <u>p</u>resent <u>v</u>alue or starting amount of the asset (default 0).
+* *type* ([boolean](/features/value-types/#booleans), [optional](/features/optional-arguments.md)). A logical value indicating whether the payment due dates are at the end (FALSE or 0) of the compounding periods or at the beginning (TRUE or any non-zero value). The default is FALSE when omitted.
 ### Additional guidance
 * Make sure that the *rate* argument specifies the interest rate or yield applicable to the compounding period, based on the value chosen for *nper*.
-* The *pmt* and *pv* arguments should be expressed in the same currency unit. The value returned is expressed in the same currency unit.
+* The *pmt* and *pv* arguments should be expressed in the same currency unit.
 * To ensure a worthwhile result, one of the *pmt* and *pv* arguments should be non-zero.
 * The setting of the *type* argument only affects the calculation for non-zero values of the *pmt* argument.
-<!--@include: ../markdown-snippets/error-type-details.md-->
-
+### Returned value
+FV returns a [number](/features/value-types/#numbers) representing the future value expressed in the same [currency unit](/features/units) that was used for the *pmt* and *pv* arguments.
+### Error conditions
+* In common with many other IronCalc functions, FV propagates errors that are found in any of its arguments.
+* If too few or too many arguments are supplied, FV returns the [`#ERROR!`](/features/error-types.md#error) error.
+* If the value of any of the *rate*, *nper*, *pmt* or *pv* arguments is not (or cannot be converted to) a [number](/features/value-types#value), then FV returns the [`#VALUE!`](/features/error-types.md#value) error.
+* If the value of the *type* argument is not (or cannot be converted to) a [Boolean](/features/value-types#booleans), then FV again returns the [`#VALUE!`](/features/error-types.md#value) error.
+* For some combinations of valid argument values, FV may return a [`#NUM!`](/features/error-types.md#num) error or a [`#DIV/0!`](/features/error-types.md#div-0) error.
+<!--@include: ../markdown-snippets/error-type-details.txt-->
 ## Details
-* If *rate* = 0, FV is given by the equation:
-$$
-FV = -pv - (pmt \times nper)
-$$
+* If $\text{type} \neq 0$, $\text{fv}$ is given by the equation:
+$$ \text{fv} = -\text{pv} \times (1 + \text{rate})^\text{nper} - \dfrac{\text{pmt}\times\big({(1+\text{rate})^\text{nper}-1}\big) \times(1+\text{rate})}{\text{rate}}$$
 
-* If *rate* <> 0 and *type* = 0, FV is given by the equation:
-$$ FV = -pv \times (1 + rate)^{nper} - \dfrac{pmt\times\big({(1+rate)^{nper}-1}\big)}{rate}
-$$
-* If *rate* <> 0 and *type* <> 0, FV is given by the equation:
-$$ FV = -pv \times (1 + rate)^{nper} - \dfrac{pmt\times\big({(1+rate)^{nper}-1}\big) \times(1+rate)}{rate}
-$$
+* If $\text{type} = 0$, $\text{fv}$ is given by the equation:
+$$ \text{fv} = -\text{pv} \times (1 + \text{rate})^{\text{nper}} - \dfrac{\text{pmt}\times\big({(1+\text{rate})^\text{nper}-1}\big)}{\text{rate}}$$
+
+* For any $\text{type}$, in the special case of $\text{rate} = 0$, $\text{fv}$ is given by the equation:
+$$ \text{fv} = -\text{pv} - (\text{pmt} \times \text{nper}) $$
 ## Examples
-[See this example in IronCalc](https://app.ironcalc.com/?example=fv).
+[See some examples in IronCalc](https://app.ironcalc.com/?example=fv).
 
 ## Links
 * For more information about the concept of "future value" in finance, visit Wikipedia's [Future value](https://en.wikipedia.org/wiki/Future_value) page.

docs/src/functions/markdown-snippets/error-type-details.md

@@ -1 +0,0 @@
-* For information about the different types of errors that you may encounter when using IronCalc functions, visit our [Error Types](/features/error-types) page.

docs/src/functions/markdown-snippets/error-type-details.txt

@@ -0,0 +1 @@
+* For more information about the different types of errors that you may encounter when using IronCalc functions, visit our [Error Types](/features/error-types) page.

webapp/src/AppComponents/DeleteWorkbookDialog.tsx

@@ -0,0 +1,185 @@
+import styled from "@emotion/styled";
+import { Trash2 } from "lucide-react";
+import { useEffect, useRef } from "react";
+
+interface DeleteWorkbookDialogProperties {
+  onClose: () => void;
+  onConfirm: () => void;
+  workbookName: string;
+}
+
+function DeleteWorkbookDialog(properties: DeleteWorkbookDialogProperties) {
+  const deleteButtonRef = useRef<HTMLButtonElement>(null);
+
+  useEffect(() => {
+    const root = document.getElementById("root");
+    if (root) {
+      root.style.filter = "blur(2px)";
+    }
+    if (deleteButtonRef.current) {
+      deleteButtonRef.current.focus();
+    }
+    return () => {
+      const root = document.getElementById("root");
+      if (root) {
+        root.style.filter = "none";
+      }
+    };
+  }, []);
+
+  return (
+    <DialogWrapper
+      tabIndex={-1}
+      onKeyDown={(event) => {
+        if (event.code === "Escape") {
+          properties.onClose();
+        }
+      }}
+      role="dialog"
+      aria-labelledby="delete-dialog-title"
+      aria-describedby="delete-dialog-description"
+    >
+      <IconWrapper>
+        <Trash2 />
+      </IconWrapper>
+      <ContentWrapper>
+        <Title>Are you sure?</Title>
+        <Body>
+          The workbook <strong>'{properties.workbookName}'</strong> will be
+          permanently deleted. This action cannot be undone.
+        </Body>
+        <ButtonGroup>
+          <DeleteButton
+            onClick={() => {
+              properties.onConfirm();
+              properties.onClose();
+            }}
+            ref={deleteButtonRef}
+          >
+            Yes, delete workbook
+          </DeleteButton>
+          <CancelButton onClick={properties.onClose}>Cancel</CancelButton>
+        </ButtonGroup>
+      </ContentWrapper>
+    </DialogWrapper>
+  );
+}
+
+DeleteWorkbookDialog.displayName = "DeleteWorkbookDialog";
+
+// some colors taken from the IronCalc palette
+const COMMON_WHITE = "#FFF";
+const COMMON_BLACK = "#272525";
+
+const ERROR_MAIN = "#EB5757";
+const ERROR_DARK = "#CB4C4C";
+
+const GREY_200 = "#EEEEEE";
+const GREY_300 = "#E0E0E0";
+const GREY_700 = "#616161";
+const GREY_900 = "#333333";
+
+const PRIMARY_MAIN = "#F2994A";
+const PRIMARY_DARK = "#D68742";
+
+const DialogWrapper = styled.div`
+  position: fixed;
+  top: 50%;
+  left: 50%;
+  transform: translate(-50%, -50%);
+  background: white;
+  display: flex;
+  flex-direction: column;
+  gap: 16px;
+  padding: 12px;
+  border-radius: 8px;
+  box-shadow: 0px 1px 3px 0px ${COMMON_BLACK}1A;
+  width: 280px;
+  max-width: calc(100% - 40px);
+  z-index: 50;
+  font-family: "Inter", sans-serif;
+`;
+
+const IconWrapper = styled.div`
+  display: flex;
+  justify-content: center;
+  align-items: center;
+  width: 36px;
+  height: 36px;
+  border-radius: 4px;
+  background-color: ${ERROR_MAIN}1A;
+  margin: 12px auto 0 auto;
+  color: ${ERROR_MAIN};
+  svg {
+    width: 16px;
+    height: 16px;
+  }
+`;
+
+const ContentWrapper = styled.div`
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 8px;
+  font-size: 14px;
+  word-break: break-word;
+`;
+
+const Title = styled.h2`
+  margin: 0;
+  font-weight: 600;
+  font-size: inherit;
+  color: ${GREY_900};
+`;
+
+const Body = styled.p`
+  margin: 0;
+  text-align: center;
+  color: ${GREY_900};
+  font-size: 12px;
+`;
+
+const ButtonGroup = styled.div`
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+  margin-top: 8px;
+  width: 100%;
+`;
+
+const Button = styled.button`
+  cursor: pointer;
+  color: ${COMMON_WHITE};
+  background-color: ${PRIMARY_MAIN};
+  padding: 0px 10px;
+  height: 36px;
+  border-radius: 4px;
+  border: none;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  font-size: 14px;
+  text-overflow: ellipsis;
+  transition: background-color 150ms;
+  &:hover {
+    background-color: ${PRIMARY_DARK};
+  }
+`;
+
+const DeleteButton = styled(Button)`
+  background-color: ${ERROR_MAIN};
+  color: ${COMMON_WHITE};
+  &:hover {
+    background-color: ${ERROR_DARK};
+  }
+`;
+
+const CancelButton = styled(Button)`
+  background-color: ${GREY_200};
+  color: ${GREY_700};
+  &:hover {
+    background-color: ${GREY_300};
+  }
+`;
+
+export default DeleteWorkbookDialog;

webapp/src/AppComponents/FileMenu.tsx

@@ -2,7 +2,8 @@ import styled from "@emotion/styled";
 import { Menu, MenuItem, Modal } from "@mui/material";
 import { Check, FileDown, FileUp, Plus, Trash2 } from "lucide-react";
 import { useRef, useState } from "react";
-import { UploadFileDialog } from "./UploadFileDialog";
+import DeleteWorkbookDialog from "./DeleteWorkbookDialog";
+import UploadFileDialog from "./UploadFileDialog";
 import { getModelsMetadata, getSelectedUuid } from "./storage";
 
 export function FileMenu(props: {
@@ -18,6 +19,7 @@ export function FileMenu(props: {
   const models = getModelsMetadata();
   const uuids = Object.keys(models);
   const selectedUuid = getSelectedUuid();
+  const [isDeleteDialogOpen, setDeleteDialogOpen] = useState(false);
 
   const elements = [];
   for (const uuid of uuids) {
@@ -88,16 +90,14 @@ export function FileMenu(props: {
             Download (.xlsx)
           </MenuItemText>
         </MenuItemWrapper>
-        <MenuItemWrapper>
+        <MenuItemWrapper
+          onClick={() => {
+            setDeleteDialogOpen(true);
+            setMenuOpen(false);
+          }}
+        >
           <StyledTrash />
-          <MenuItemText
-            onClick={() => {
-              props.onDelete();
-              setMenuOpen(false);
-            }}
-          >
-            Delete workbook
-          </MenuItemText>
+          <MenuItemText>Delete workbook</MenuItemText>
         </MenuItemWrapper>
         <MenuDivider />
         {elements}
@@ -105,10 +105,6 @@ export function FileMenu(props: {
       <Modal
         open={isImportMenuOpen}
         onClose={() => {
-          const root = document.getElementById("root");
-          if (root) {
-            root.style.filter = "";
-          }
           setImportMenuOpen(false);
         }}
         aria-labelledby="modal-modal-title"
@@ -117,16 +113,26 @@ export function FileMenu(props: {
         <>
           <UploadFileDialog
             onClose={() => {
-              const root = document.getElementById("root");
-              if (root) {
-                root.style.filter = "";
-              }
               setImportMenuOpen(false);
             }}
             onModelUpload={props.onModelUpload}
           />
         </>
       </Modal>
+      <Modal
+        open={isDeleteDialogOpen}
+        onClose={() => setDeleteDialogOpen(false)}
+        aria-labelledby="delete-dialog-title"
+        aria-describedby="delete-dialog-description"
+      >
+        <>
+          <DeleteWorkbookDialog
+            onClose={() => setDeleteDialogOpen(false)}
+            onConfirm={props.onDelete}
+            workbookName={selectedUuid ? models[selectedUuid] : ""}
+          />
+        </>
+      </Modal>
     </>
   );
 }

webapp/src/AppComponents/UploadFileDialog.tsx

@@ -1,17 +1,34 @@
 import styled from "@emotion/styled";
-import { BookOpen, FileUp } from "lucide-react";
-import { type DragEvent, useRef, useState } from "react";
+import { BookOpen, FileUp, X } from "lucide-react";
+import { type DragEvent, useEffect, useRef, useState } from "react";
 
-export function UploadFileDialog(properties: {
+function UploadFileDialog(properties: {
   onClose: () => void;
   onModelUpload: (blob: ArrayBuffer, fileName: string) => Promise<void>;
 }) {
   const [hover, setHover] = useState(false);
   const [message, setMessage] = useState("");
   const fileInputRef = useRef<HTMLInputElement>(null);
+  const crossRef = useRef<HTMLDivElement>(null);
 
   const { onModelUpload } = properties;
 
+  useEffect(() => {
+    const root = document.getElementById("root");
+    if (root) {
+      root.style.filter = "blur(2px)";
+    }
+    if (crossRef.current) {
+      crossRef.current.focus();
+    }
+    return () => {
+      const root = document.getElementById("root");
+      if (root) {
+        root.style.filter = "none";
+      }
+    };
+  }, []);
+
   const handleClose = () => {
     properties.onClose();
   };
@@ -79,12 +96,16 @@ export function UploadFileDialog(properties: {
     reader.readAsArrayBuffer(file);
   };
 
-  const root = document.getElementById("root");
-  if (root) {
-    root.style.filter = "blur(4px)";
-  }
   return (
-    <UploadDialog>
+    <UploadDialog
+      tabIndex={-1}
+      role="dialog"
+      onKeyDown={(event) => {
+        if (event.code === "Escape") {
+          handleClose();
+        }
+      }}
+    >
       <UploadTitle>
         <span style={{ flexGrow: 2, marginLeft: 12 }}>
           Import an .xlsx file
@@ -92,29 +113,11 @@ export function UploadFileDialog(properties: {
         <Cross
           style={{ marginRight: 12 }}
           onClick={handleClose}
-          onKeyDown={() => {}}
+          title="Close Dialog"
+          ref={crossRef}
+          tabIndex={0}
         >
-          <svg
-            width="16"
-            height="16"
-            viewBox="0 0 16 16"
-            fill="none"
-            xmlns="http://www.w3.org/2000/svg"
-          >
-            <title>Close</title>
-            <path
-              d="M12 4.5L4 12.5"
-              stroke="#333333"
-              strokeLinecap="round"
-              strokeLinejoin="round"
-            />
-            <path
-              d="M4 4.5L12 12.5"
-              stroke="#333333"
-              strokeLinecap="round"
-              strokeLinejoin="round"
-            />
-          </svg>
+          <X />
         </Cross>
       </UploadTitle>
       {message === "" ? (
@@ -215,6 +218,11 @@ const Cross = styled("div")`
   cursor: pointer;
   align-items: center;
   justify-content: center;
+  svg {
+    width: 16px;
+    height: 16px;
+    stroke-width: 1.5;
+  }
 `;
 
 const DocLink = styled("span")`
@@ -300,3 +308,5 @@ const DropZone = styled("div")`
   gap: 16px;
   transition: 0.2s ease-in-out;
 `;
+
+export default UploadFileDialog;

webapp/src/components/NameManagerDialog/NameManagerDialog.tsx

@@ -0,0 +1,178 @@
+import type { Model } from "@ironcalc/wasm";
+import {
+  Box,
+  Button,
+  Dialog,
+  DialogActions,
+  DialogContent,
+  DialogTitle,
+  IconButton,
+  Stack,
+  styled,
+} from "@mui/material";
+import { t } from "i18next";
+import { BookOpen, Plus, X } from "lucide-react";
+import { useState } from "react";
+import { getFullRangeToString } from "../util";
+import NamedRangeActive, { NamedRangeInactive } from "./NamedRange";
+
+interface NameManagerDialogProperties {
+  onClose: () => void;
+  open: boolean;
+  model: Model;
+  onNamesChanged: () => void;
+}
+
+function NameManagerDialog(properties: NameManagerDialogProperties) {
+  const { onClose, open, model, onNamesChanged } = properties;
+
+  // If editingNameIndex is -1, then we are adding a new name
+  // If editingNameIndex is -2, then we are not editing any name
+  // If editingNameIndex is a positive number, then we are editing that index
+  const [editingNameIndex, setEditingNameIndex] = useState(-2);
+
+  const handleNewName = () => {
+    setEditingNameIndex(-1);
+  };
+
+  const handleDelete = () => {
+    onNamesChanged();
+  };
+
+  const formatFormula = (): string => {
+    const worksheets = model.getWorksheetsProperties();
+    const selectedView = model.getSelectedView();
+
+    return getFullRangeToString(selectedView, worksheets);
+  };
+
+  const worksheets = model.getWorksheetsProperties();
+  const definedNameList = model.getDefinedNameList();
+
+  return (
+    <StyledDialog open={open} onClose={onClose} maxWidth={false} scroll="paper">
+      <StyledDialogTitle>
+        {t("name_manager_dialog.title")}
+        <IconButton onClick={onClose}>
+          <X size={16} />
+        </IconButton>
+      </StyledDialogTitle>
+      <StyledDialogContent dividers>
+        <StyledRangesHeader>
+          <StyledBox>{t("name_manager_dialog.name")}</StyledBox>
+          <StyledBox>{t("name_manager_dialog.range")}</StyledBox>
+          <StyledBox>{t("name_manager_dialog.scope")}</StyledBox>
+        </StyledRangesHeader>
+        <NameLisWrapper>
+          {definedNameList.map((definedName, index) => {
+            if (index === editingNameIndex) {
+              return (
+                <NamedRangeActive
+                  model={model}
+                  worksheets={worksheets}
+                  name={definedName.name}
+                  scope={definedName.scope}
+                  formula={definedName.formula}
+                  key={definedName.name}
+                  onSave={onNamesChanged}
+                  onCancel={() => setEditingNameIndex(-2)}
+                />
+              );
+            }
+            return (
+              <NamedRangeInactive
+                name={definedName.name}
+                scope={definedName.scope}
+                formula={definedName.formula}
+                key={definedName.name}
+                onEdit={() => setEditingNameIndex(index)}
+                onDelete={handleDelete}
+              />
+            );
+          })}
+        </NameLisWrapper>
+        {editingNameIndex === -1 && (
+          <NamedRangeActive
+          model={model}
+          worksheets={worksheets}
+          name={"Name1"}
+          scope={0}
+          formula={formatFormula()}
+          onSave={onNamesChanged}
+          onCancel={() => setEditingNameIndex(-2)}
+        />)
+      }
+      </StyledDialogContent>
+      <StyledDialogActions>
+        <Box display="flex" alignItems="center" gap={"8px"}>
+          <BookOpen color="grey" size={16} />
+          <span style={{ fontSize: "12px", fontFamily: "Inter" }}>
+            {t("name_manager_dialog.help")}
+          </span>
+        </Box>
+        <Button
+          onClick={handleNewName}
+          variant="contained"
+          disableElevation
+          sx={{ textTransform: "none" }}
+          startIcon={<Plus size={16} />}
+          disabled={editingNameIndex > -2}
+        >
+          {t("name_manager_dialog.new")}
+        </Button>
+      </StyledDialogActions>
+    </StyledDialog>
+  );
+}
+
+const NameLisWrapper = styled(Stack)`
+  overflow-y: auto;
+`;
+
+const StyledBox = styled("div")`
+  width: 171px;
+`;
+
+const StyledDialog = styled(Dialog)(() => ({
+  "& .MuiPaper-root": {
+    height: "380px",
+    minWidth: "620px",
+  },
+}));
+
+const StyledDialogTitle = styled(DialogTitle)`
+  padding: 12px 20px;
+  font-size: 14px;
+  font-weight: 600;
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+`;
+
+const StyledDialogContent = styled(DialogContent)`
+  display: flex;
+  flex-direction: column;
+  gap: 12px;
+  padding: 20px 12px 20px 20px;
+`;
+
+const StyledRangesHeader = styled(Box)(({ theme }) => ({
+  display: "flex",
+  paddingLeft: "6px",
+  fontFamily: theme.typography.fontFamily,
+  fontSize: "12px",
+  fontWeight: "700",
+  color: theme.palette.info.main,
+}));
+
+const StyledDialogActions = styled(DialogActions)`
+  padding: 12px 20px;
+  height: 40px;
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  font-size: 12px;
+  color: #757575;
+`;
+
+export default NameManagerDialog;

webapp/src/components/NameManagerDialog/NamedRange.tsx

@@ -0,0 +1,244 @@
+import type { Model, WorksheetProperties } from "@ironcalc/wasm";
+import {
+  Box,
+  Divider,
+  IconButton,
+  MenuItem,
+  TextField,
+  styled,
+} from "@mui/material";
+import { t } from "i18next";
+import { Check, PencilLine, Trash2, X } from "lucide-react";
+import { useEffect, useState } from "react";
+
+interface NamedRangeProperties {
+  model: Model;
+  worksheets: WorksheetProperties[];
+  name: string;
+  scope?: number;
+  formula: string;
+  onSave: () => void;
+  onCancel: () => void;
+}
+
+interface NamedRangeInactiveProperties {
+  name: string;
+  scope?: number;
+  formula: string;
+  onDelete: () => void;
+  onEdit: () => void;
+}
+
+export function NamedRangeInactive(properties: NamedRangeInactiveProperties) {
+  const { name, scope, formula, onDelete, onEdit } = properties;
+  const showOptions = true;
+  return (
+    <WrappedLine>
+      <StyledDiv>{name}</StyledDiv>
+      <StyledDiv>{scope}</StyledDiv>
+      <StyledDiv>{formula}</StyledDiv>
+      <WrappedIcons>
+        <IconButton onClick={onEdit} disabled={!showOptions}>
+          <StyledPencilLine size={12} />
+        </IconButton>
+        <StyledIconButton onClick={onDelete} disabled={!showOptions}>
+          <Trash2 size={12} />
+        </StyledIconButton>
+      </WrappedIcons>
+    </WrappedLine>
+  );
+}
+
+function NamedRangeActive(properties: NamedRangeProperties) {
+  const { model, worksheets, name, scope, formula, onCancel, onSave } =
+    properties;
+  const [newName, setNewName] = useState(name || "");
+  const [newScope, setNewScope] = useState(scope);
+  const [newFormula, setNewFormula] = useState(formula);
+  const [readOnly, setReadOnly] = useState(true);
+  const [showEditDelete, setShowEditDelete] = useState(false);
+
+  // todo: add error messages for validations
+  const [nameError, setNameError] = useState(false);
+  const [formulaError, setFormulaError] = useState(false);
+
+  useEffect(() => {
+    // set state for new name
+    const definedNamesModel = model.getDefinedNameList();
+    if (!definedNamesModel.find((n) => n.name === newName)) {
+      setReadOnly(false);
+      setShowEditDelete(true);
+    }
+  }, [newName, model]);
+
+  const handleSaveUpdate = () => {
+    const definedNamesModel = model.getDefinedNameList();
+
+    if (definedNamesModel.find((n) => n.name === name)) {
+      // update name
+      try {
+        model.updateDefinedName(
+          name || "",
+          scope,
+          newName,
+          newScope,
+          newFormula
+        );
+      } catch (error) {
+        console.log("DefinedName update failed", error);
+      }
+    } else {
+      // create name
+      try {
+        model.newDefinedName(newName, newScope, newFormula);
+      } catch (error) {
+        console.log("DefinedName save failed", error);
+      }
+      setReadOnly(true);
+    }
+    setShowEditDelete(false);
+  };
+
+  const handleCancel = () => {
+    setReadOnly(true);
+    setShowEditDelete(false);
+    setNewName(name || "");
+    setNewScope(scope);
+  };
+
+  const handleEdit = () => {
+    setReadOnly(false);
+    setShowEditDelete(true);
+  };
+
+  const handleDelete = () => {
+    try {
+      model.deleteDefinedName(newName, newScope);
+    } catch (error) {
+      console.log("DefinedName delete failed", error);
+    }
+  };
+
+  return (
+    <>
+      <StyledBox>
+        <StyledTextField
+          id="name"
+          variant="outlined"
+          size="small"
+          margin="none"
+          fullWidth
+          error={nameError}
+          value={newName}
+          onChange={(event) => setNewName(event.target.value)}
+          onKeyDown={(event) => {
+            event.stopPropagation();
+          }}
+          onClick={(event) => event.stopPropagation()}
+        />
+        <StyledTextField
+          id="scope"
+          variant="outlined"
+          select
+          size="small"
+          margin="none"
+          fullWidth
+          value={newScope ?? "global"}
+          onChange={(event) => {
+            event.target.value === "global"
+              ? setNewScope(undefined)
+              : setNewScope(+event.target.value);
+          }}
+        >
+          <MenuItem value={"global"}>
+            {t("name_manager_dialog.workbook")}
+          </MenuItem>
+          {worksheets.map((option, index) => (
+            <MenuItem key={option.name} value={index}>
+              {option.name}
+            </MenuItem>
+          ))}
+        </StyledTextField>
+        <StyledTextField
+          id="formula"
+          variant="outlined"
+          size="small"
+          margin="none"
+          fullWidth
+          error={formulaError}
+          value={newFormula}
+          onChange={(event) => setNewFormula(event.target.value)}
+          onKeyDown={(event) => {
+            event.stopPropagation();
+          }}
+          onClick={(event) => event.stopPropagation()}
+        />
+        <>
+          <IconButton onClick={handleSaveUpdate}>
+            <StyledCheck size={12} />
+          </IconButton>
+          <StyledIconButton onClick={onCancel}>
+            <X size={12} />
+          </StyledIconButton>
+        </>
+      </StyledBox>
+    </>
+  );
+}
+
+const StyledBox = styled(Box)`
+  display: flex;
+  width: 577px;
+`;
+
+const StyledPencilLine = styled(PencilLine)(({ theme }) => ({
+  color: theme.palette.common.black,
+}));
+
+const StyledCheck = styled(Check)(({ theme }) => ({
+  color: theme.palette.success.main,
+}));
+
+const StyledTextField = styled(TextField)(() => ({
+  padding: "0px",
+  width: "163px",
+  marginRight: "8px",
+  "& .MuiInputBase-root": {
+    height: "28px",
+    margin: 0,
+  },
+  "& .MuiInputBase-input": {
+    padding: "6px",
+    fontSize: "12px",
+  },
+}));
+
+const StyledIconButton = styled(IconButton)(({ theme }) => ({
+  color: theme.palette.error.main,
+  "&.Mui-disabled": {
+    opacity: 0.6,
+    color: theme.palette.error.light,
+  },
+}));
+
+
+const WrappedLine = styled(Box)({
+  display: "flex",
+  paddingLeft: "6px",
+  height: "28px",
+});
+
+const StyledDiv = styled("div")(({ theme }) => ({
+  fontFamily: theme.typography.fontFamily,
+  fontSize: "12px",
+  fontWeight: "400",
+  color: theme.palette.common.black,
+  width: "171px",
+}));
+
+const WrappedIcons = styled(Box)({
+  display: "flex",
+  gap: "0px",
+});
+
+export default NamedRangeActive;

webapp/src/components/NameManagerDialog/index.tsx

@@ -0,0 +1 @@
+export { default } from "./NameManagerDialog";

webapp/src/components/SheetTabBar/SheetListMenu.tsx

@@ -59,7 +59,10 @@ const SheetListMenu = (properties: SheetListMenuProps) => {
           )}
           {hasColors && <ItemColor style={{ backgroundColor: tab.color }} />}
           <ItemName
-            style={{ fontWeight: index === selectedIndex ? "bold" : "normal" }}
+            style={{
+              fontWeight: index === selectedIndex ? "bold" : "normal",
+              color: tab.state === "visible" ? "#333" : "#888",
+            }}
           >
             {tab.name}
           </ItemName>

webapp/src/components/SheetTabBar/SheetRenameDialog.tsx

@@ -1,4 +1,5 @@
 import { Dialog, TextField, styled } from "@mui/material";
+import { Check, X } from "lucide-react";
 import { useState } from "react";
 import { useTranslation } from "react-i18next";
 import { theme } from "../../theme";
@@ -20,28 +21,13 @@ const SheetRenameDialog = (properties: SheetRenameDialogProps) => {
     <Dialog open={properties.open} onClose={properties.onClose}>
       <StyledDialogTitle>
         {t("sheet_rename.title")}
-        <Cross onClick={handleClose} onKeyDown={() => {}}>
-          <svg
-            width="16"
-            height="16"
-            viewBox="0 0 16 16"
-            fill="none"
-            xmlns="http://www.w3.org/2000/svg"
-          >
-            <title>Close</title>
-            <path
-              d="M12 4.5L4 12.5"
-              stroke="#333333"
-              strokeLinecap="round"
-              strokeLinejoin="round"
-            />
-            <path
-              d="M4 4.5L12 12.5"
-              stroke="#333333"
-              strokeLinecap="round"
-              strokeLinejoin="round"
-            />
-          </svg>
+        <Cross
+          onClick={handleClose}
+          title={t("sheet_rename.close")}
+          tabIndex={-1}
+          onKeyDown={() => {}}
+        >
+          <X />
         </Cross>
       </StyledDialogTitle>
       <StyledDialogContent>
@@ -54,6 +40,8 @@ const SheetRenameDialog = (properties: SheetRenameDialogProps) => {
             if (event.key === "Enter") {
               properties.onNameChanged(name);
               properties.onClose();
+            } else if (event.key === "Escape") {
+              properties.onClose();
             }
           }}
           onChange={(event) => {
@@ -61,6 +49,8 @@ const SheetRenameDialog = (properties: SheetRenameDialogProps) => {
           }}
           spellCheck="false"
           onPaste={(event) => event.stopPropagation()}
+          onCopy={(event) => event.stopPropagation()}
+          onCut={(event) => event.stopPropagation()}
         />
       </StyledDialogContent>
       <DialogFooter>
@@ -69,6 +59,9 @@ const SheetRenameDialog = (properties: SheetRenameDialogProps) => {
             properties.onNameChanged(name);
           }}
         >
+          <Check
+            style={{ width: "16px", height: "16px", marginRight: "8px" }}
+          />
           {t("sheet_rename.rename")}
         </StyledButton>
       </DialogFooter>
@@ -90,7 +83,7 @@ const StyledDialogTitle = styled("div")`
 
 const Cross = styled("div")`
   &:hover {
-    background-color: ${theme.palette.grey["100"]};
+    background-color: ${theme.palette.grey["50"]};
   }
   display: flex;
   border-radius: 4px;
@@ -99,6 +92,11 @@ const Cross = styled("div")`
   cursor: pointer;
   align-items: center;
   justify-content: center;
+  svg {
+    width: 16px;
+    height: 16px;
+    stroke-width: 1.5;
+  }
 `;
 
 const StyledDialogContent = styled("div")`

webapp/src/components/SheetTabBar/SheetTab.tsx

@@ -1,4 +1,5 @@
 import { Button, Menu, MenuItem, styled } from "@mui/material";
+import type { MenuItemProps } from "@mui/material";
 import { ChevronDown } from "lucide-react";
 import { useRef, useState } from "react";
 import { theme } from "../../theme";
@@ -14,7 +15,9 @@ interface SheetTabProps {
   onSelected: () => void;
   onColorChanged: (hex: string) => void;
   onRenamed: (name: string) => void;
+  canDelete: boolean;
   onDeleted: () => void;
+  onHideSheet: () => void;
   workbookState: WorkbookState;
 }
 
@@ -92,14 +95,23 @@ function SheetTab(props: SheetTabProps) {
           Change Color
         </StyledMenuItem>
         <StyledMenuItem
+          disabled={!props.canDelete}
           onClick={() => {
             props.onDeleted();
             handleClose();
           }}
         >
-          {" "}
           Delete
         </StyledMenuItem>
+        <StyledMenuItem
+          disabled={!props.canDelete}
+          onClick={() => {
+            props.onHideSheet();
+            handleClose();
+          }}
+        >
+          Hide sheet
+        </StyledMenuItem>
       </StyledMenu>
       <SheetRenameDialog
         open={renameDialogOpen}
@@ -137,16 +149,19 @@ const StyledMenu = styled(Menu)`
   }
 `;
 
-const StyledMenuItem = styled(MenuItem)`
-  display: flex;
-  justify-content: space-between;
-  font-size: 12px;
-  width: calc(100% - 8px);
-  margin: 0px 4px;
-  border-radius: 4px;
-  padding: 8px;
-  height: 32px;
-`;
+const StyledMenuItem = styled(MenuItem)<MenuItemProps>(() => ({
+  display: "flex",
+  justifyContent: "space-between",
+  fontSize: "12px",
+  width: "calc(100% - 8px)",
+  margin: "0px 4px",
+  borderRadius: "4px",
+  padding: "8px",
+  height: "32px",
+  "&:disabled": {
+    color: "#BDBDBD",
+  },
+}));
 
 const TabWrapper = styled("div")<{ $color: string; $selected: boolean }>`
   display: flex;

webapp/src/components/SheetTabBar/SheetTabBar.tsx

@@ -19,6 +19,7 @@ export interface SheetTabBarProps {
   onSheetColorChanged: (hex: string) => void;
   onSheetRenamed: (name: string) => void;
   onSheetDeleted: () => void;
+  onHideSheet: () => void;
 }
 
 function SheetTabBar(props: SheetTabBarProps) {
@@ -33,6 +34,18 @@ function SheetTabBar(props: SheetTabBarProps) {
     setAnchorEl(null);
   };
 
+  const nonHidenSheets = sheets
+    .map((s, index) => {
+      return {
+        state: s.state,
+        index,
+        name: s.name,
+        color: s.color,
+        sheetId: s.sheetId,
+      };
+    })
+    .filter((s) => s.state === "visible");
+
   return (
     <Container>
       <LeftButtonsContainer>
@@ -54,22 +67,24 @@ function SheetTabBar(props: SheetTabBarProps) {
       <VerticalDivider />
       <Sheets>
         <SheetInner>
-          {sheets.map((tab, index) => (
+          {nonHidenSheets.map((tab) => (
             <SheetTab
               key={tab.sheetId}
               name={tab.name}
               color={tab.color}
-              selected={index === selectedIndex}
-              onSelected={() => onSheetSelected(index)}
+              selected={tab.index === selectedIndex}
+              onSelected={() => onSheetSelected(tab.index)}
               onColorChanged={(hex: string): void => {
                 props.onSheetColorChanged(hex);
               }}
               onRenamed={(name: string): void => {
                 props.onSheetRenamed(name);
               }}
+              canDelete={nonHidenSheets.length > 1}
               onDeleted={(): void => {
                 props.onSheetDeleted();
               }}
+              onHideSheet={props.onHideSheet}
               workbookState={workbookState}
             />
           ))}

webapp/src/components/SheetTabBar/types.ts

@@ -2,4 +2,5 @@ export interface SheetOptions {
   name: string;
   color: string;
   sheetId: number;
+  state: string;
 }

webapp/src/components/WorksheetCanvas/constants.ts

@@ -5,10 +5,10 @@ export const headerGlobalSelectorColor = "#EAECF4";
 export const headerSelectedBackground = "#EEEEEE";
 export const headerFullSelectedBackground = "#D3D6E9";
 export const headerSelectedColor = "#333";
-export const headerBorderColor = "#DEE0EF";
+export const headerBorderColor = "#E0E0E0";
 
 export const gridColor = "#E0E0E0";
-export const gridSeparatorColor = "#D3D6E9";
+export const gridSeparatorColor = "#E0E0E0";
 export const defaultTextColor = "#2E414D";
 
 export const outlineColor = "#F2994A";

webapp/src/components/colorPicker.tsx

@@ -45,8 +45,8 @@ const ColorPicker = (properties: ColorPickerProps) => {
     "#3BB68A",
     "#8CB354",
     "#F8CD3C",
+    "#F2994A",
     "#EC5753",
-    "#A23C52",
     "#D03627",
     "#523E93",
     "#3358B7",

webapp/src/components/formatPicker.tsx

@@ -1,6 +1,6 @@
 import styled from "@emotion/styled";
 import { Dialog, TextField } from "@mui/material";
-import { Check } from "lucide-react";
+import { Check, X } from "lucide-react";
 import { useState } from "react";
 import { useTranslation } from "react-i18next";
 import { theme } from "../theme";
@@ -36,28 +36,8 @@ const FormatPicker = (properties: FormatPickerProps) => {
     >
       <StyledDialogTitle>
         {t("num_fmt.title")}
-        <Cross onClick={handleClose} onKeyDown={() => {}}>
-          <svg
-            width="16"
-            height="16"
-            viewBox="0 0 16 16"
-            fill="none"
-            xmlns="http://www.w3.org/2000/svg"
-          >
-            <title>Close</title>
-            <path
-              d="M12 4.5L4 12.5"
-              stroke="#333333"
-              strokeLinecap="round"
-              strokeLinejoin="round"
-            />
-            <path
-              d="M4 4.5L12 12.5"
-              stroke="#333333"
-              strokeLinecap="round"
-              strokeLinejoin="round"
-            />
-          </svg>
+        <Cross onClick={handleClose} title={t("num_fmt.close")}>
+          <X />
         </Cross>
       </StyledDialogTitle>
 
@@ -101,7 +81,7 @@ const StyledDialogTitle = styled("div")`
 
 const Cross = styled("div")`
   &:hover {
-    background-color: ${theme.palette.grey["100"]};
+    background-color: ${theme.palette.grey["50"]};
   }
   display: flex;
   border-radius: 4px;
@@ -110,6 +90,11 @@ const Cross = styled("div")`
   cursor: pointer;
   align-items: center;
   justify-content: center;
+  svg {
+    width: 16px;
+    height: 16px;
+    stroke-width: 1.5;
+  }
 `;
 
 const StyledDialogContent = styled("div")`

webapp/src/components/toolbar.tsx

@@ -1,6 +1,7 @@
 import type {
   BorderOptions,
   HorizontalAlignment,
+  Model,
   VerticalAlignment,
 } from "@ironcalc/wasm";
 import { styled } from "@mui/material/styles";
@@ -22,6 +23,7 @@ import {
   Percent,
   Redo2,
   Strikethrough,
+  Tags,
   Type,
   Underline,
   Undo2,
@@ -34,6 +36,7 @@ import {
   DecimalPlacesIncreaseIcon,
 } from "../icons";
 import { theme } from "../theme";
+import NameManagerDialog from "./NameManagerDialog";
 import BorderPicker from "./borderPicker";
 import ColorPicker from "./colorPicker";
 import { TOOLBAR_HEIGHT } from "./constants";
@@ -72,12 +75,15 @@ type ToolbarProperties = {
   numFmt: string;
   showGridLines: boolean;
   onToggleShowGridLines: (show: boolean) => void;
+  onNamesChanged: () => void;
+  model: Model;
 };
 
 function Toolbar(properties: ToolbarProperties) {
   const [fontColorPickerOpen, setFontColorPickerOpen] = useState(false);
   const [fillColorPickerOpen, setFillColorPickerOpen] = useState(false);
   const [borderPickerOpen, setBorderPickerOpen] = useState(false);
+  const [nameManagerDialogOpen, setNameManagerDialogOpen] = useState(false);
 
   const fontColorButton = useRef(null);
   const fillColorButton = useRef(null);
@@ -340,6 +346,18 @@ function Toolbar(properties: ToolbarProperties) {
       >
         {properties.showGridLines ? <Grid2x2Check /> : <Grid2x2X />}
       </StyledButton>
+      <Divider />
+      <StyledButton
+        type="button"
+        $pressed={false}
+        onClick={() => {
+          setNameManagerDialogOpen(true);
+        }}
+        disabled={!canEdit}
+        title={t("toolbar.name_manager")}
+      >
+        <Tags />
+      </StyledButton>
 
       <ColorPicker
         color={properties.fontColor}
@@ -375,6 +393,14 @@ function Toolbar(properties: ToolbarProperties) {
         anchorEl={borderButton}
         open={borderPickerOpen}
       />
+      <NameManagerDialog
+        open={nameManagerDialogOpen}
+        onClose={() => {
+          setNameManagerDialogOpen(false);
+        }}
+        model={properties.model}
+        onNamesChanged={properties.onNamesChanged}
+      />
     </ToolbarContainer>
   );
 }

webapp/src/components/util.ts

@@ -1,6 +1,10 @@
 import type { Area, Cell } from "./types";
 
-import { columnNameFromNumber } from "@ironcalc/wasm";
+import {
+  type SelectedView,
+  type WorksheetProperties,
+  columnNameFromNumber,
+} from "@ironcalc/wasm";
 
 /**
  *  Returns true if the keypress should start editing
@@ -57,7 +61,24 @@ export function rangeToStr(
   if (rowStart === rowEnd && columnStart === columnEnd) {
     return `${sheetName}${columnNameFromNumber(columnStart)}${rowStart}`;
   }
-  return `${sheetName}${columnNameFromNumber(
-    columnStart,
-  )}${rowStart}:${columnNameFromNumber(columnEnd)}${rowEnd}`;
+  return `${sheetName}${columnNameFromNumber(columnStart)}${rowStart}:${columnNameFromNumber(
+    columnEnd,
+  )}${rowEnd}`;
+}
+
+export function getFullRangeToString(
+  selectedView: SelectedView,
+  worksheets: WorksheetProperties[],
+): string {
+  // order of values is confusing compared to rangeToStr range type, needs refactoring for consistency
+  const [rowStart, columnStart, rowEnd, columnEnd] = selectedView.range;
+  const sheetNames = worksheets.map((s) => s.name);
+  const sheetName = `${sheetNames[selectedView.sheet]}!`;
+
+  if (rowStart === rowEnd && columnStart === columnEnd) {
+    return `${sheetName}${columnNameFromNumber(columnStart)}${rowStart}`;
+  }
+  return `${sheetName}${columnNameFromNumber(columnStart)}${rowStart}:${columnNameFromNumber(
+    columnEnd,
+  )}${rowEnd}`;
 }

webapp/src/components/workbook.tsx

@@ -5,7 +5,9 @@ import type {
   WorksheetProperties,
 } from "@ironcalc/wasm";
 import { styled } from "@mui/material/styles";
+import { PaintRoller } from "lucide-react";
 import { useCallback, useEffect, useRef, useState } from "react";
+import ReactDOMServer from "react-dom/server";
 import SheetTabBar from "./SheetTabBar/SheetTabBar";
 import {
   COLUMN_WIDTH_SCALE,
@@ -32,8 +34,8 @@ const Workbook = (props: { model: Model; workbookState: WorkbookState }) => {
   const setRedrawId = useState(0)[1];
   const info = model
     .getWorksheetsProperties()
-    .map(({ name, color, sheet_id }: WorksheetProperties) => {
-      return { name, color: color ? color : "#FFF", sheetId: sheet_id };
+    .map(({ name, color, sheet_id, state }: WorksheetProperties) => {
+      return { name, color: color ? color : "#FFF", sheetId: sheet_id, state };
     });
   const focusWorkbook = useCallback(() => {
     if (rootRef.current) {
@@ -135,8 +137,17 @@ const Workbook = (props: { model: Model; workbookState: WorkbookState }) => {
     // FIXME: This is so that the cursor indicates there are styles to be pasted
     const el = rootRef.current?.getElementsByClassName("sheet-container")[0];
     if (el) {
-      (el as HTMLElement).style.cursor =
-        `url('data:image/svg+xml;utf8,<svg data-v-56bd7dfc="" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-paintbrush-vertical"><path d="M10 2v2"></path><path d="M14 2v4"></path><path d="M17 2a1 1 0 0 1 1 1v9H6V3a1 1 0 0 1 1-1z"></path><path d="M6 12a1 1 0 0 0-1 1v1a2 2 0 0 0 2 2h2a1 1 0 0 1 1 1v2.9a2 2 0 1 0 4 0V17a1 1 0 0 1 1-1h2a2 2 0 0 0 2-2v-1a1 1 0 0 0-1-1"></path></svg>'), auto`;
+      (
+        el as HTMLElement
+      ).style.cursor = `url('data:image/svg+xml;utf8,${encodeURIComponent(
+        ReactDOMServer.renderToString(
+          <PaintRoller
+            width={24}
+            height={24}
+            style={{ transform: "rotate(-8deg)" }}
+          />
+        )
+      )}'), auto`;
     }
   };
 
@@ -158,12 +169,12 @@ const Workbook = (props: { model: Model; workbookState: WorkbookState }) => {
         row,
         column,
         row + height,
-        column + width,
+        column + width
       );
       setRedrawId((id) => id + 1);
     },
     onExpandAreaSelectedKeyboard: (
-      key: "ArrowRight" | "ArrowLeft" | "ArrowUp" | "ArrowDown",
+      key: "ArrowRight" | "ArrowLeft" | "ArrowUp" | "ArrowDown"
     ): void => {
       model.onExpandSelectedRange(key);
       setRedrawId((id) => id + 1);
@@ -317,7 +328,7 @@ const Workbook = (props: { model: Model; workbookState: WorkbookState }) => {
     } = model.getSelectedView();
     return getCellAddress(
       { rowStart, rowEnd, columnStart, columnEnd },
-      { row, column },
+      { row, column }
     );
   }, [model]);
 
@@ -394,7 +405,7 @@ const Workbook = (props: { model: Model; workbookState: WorkbookState }) => {
             source.sheet,
             source.area,
             data,
-            source.type === "cut",
+            source.type === "cut"
           );
           setRedrawId((id) => id + 1);
         } else if (mimeType === "text/plain") {
@@ -425,7 +436,7 @@ const Workbook = (props: { model: Model; workbookState: WorkbookState }) => {
         // '2024-10-18T14:07:37.599Z'
 
         let clipboardId = sessionStorage.getItem(
-          CLIPBOARD_ID_SESSION_STORAGE_KEY,
+          CLIPBOARD_ID_SESSION_STORAGE_KEY
         );
         if (!clipboardId) {
           clipboardId = getNewClipboardId();
@@ -463,7 +474,7 @@ const Workbook = (props: { model: Model; workbookState: WorkbookState }) => {
         // '2024-10-18T14:07:37.599Z'
 
         let clipboardId = sessionStorage.getItem(
-          CLIPBOARD_ID_SESSION_STORAGE_KEY,
+          CLIPBOARD_ID_SESSION_STORAGE_KEY
         );
         if (!clipboardId) {
           clipboardId = getNewClipboardId();
@@ -535,7 +546,7 @@ const Workbook = (props: { model: Model; workbookState: WorkbookState }) => {
           };
           model.setAreaWithBorder(
             { sheet, row, column, width, height },
-            borderArea,
+            borderArea
           );
           setRedrawId((id) => id + 1);
         }}
@@ -559,6 +570,10 @@ const Workbook = (props: { model: Model; workbookState: WorkbookState }) => {
           model.setShowGridLines(sheet, show);
           setRedrawId((id) => id + 1);
         }}
+        model={model}
+        onNamesChanged={() => {
+          setRedrawId((id) => id + 1);
+        }}
       />
       <FormulaBar
         cellAddress={cellAddress()}
@@ -586,6 +601,9 @@ const Workbook = (props: { model: Model; workbookState: WorkbookState }) => {
         selectedIndex={model.getSelectedSheet()}
         workbookState={workbookState}
         onSheetSelected={(sheet: number): void => {
+          if (info[sheet].state !== "visible") {
+            model.unhideSheet(sheet);
+          }
           model.setSelectedSheet(sheet);
           setRedrawId((value) => value + 1);
         }}
@@ -616,6 +634,11 @@ const Workbook = (props: { model: Model; workbookState: WorkbookState }) => {
           model.deleteSheet(selectedSheet);
           setRedrawId((value) => value + 1);
         }}
+        onHideSheet={(): void => {
+          const selectedSheet = model.getSelectedSheet();
+          model.hideSheet(selectedSheet);
+          setRedrawId((value) => value + 1);
+        }}
       />
     </Container>
   );

webapp/src/locale/en_us.json

@@ -18,6 +18,7 @@
     "decimal_places_increase": "Increase decimal places",
     "decimal_places_decrease": "Decrease decimal places",
     "show_hide_grid_lines": "Show/hide grid lines",
+    "name_manager": "Name manager",
     "vertical_align_bottom": "Align bottom",
     "vertical_align_middle": " Align middle",
     "vertical_align_top": "Align top",
@@ -73,5 +74,14 @@
   "navigation": {
     "add_sheet": "Add sheet",
     "sheet_list": "Sheet list"
+  },
+  "name_manager_dialog": {
+    "title": "Named Ranges",
+    "name": "Name",
+    "range": "Scope",
+    "scope": "Range",
+    "help": "Learn more about Named Ranges",
+    "new": "Add new",
+    "workbook": "Workbook (Global)"
   }
 }

xlsx/src/import/worksheets.rs

@@ -41,6 +41,30 @@ pub(crate) struct Relationship {
     pub(crate) rel_type: String,
 }
 
+impl WorkbookXML {
+    fn get_defined_names_with_scope(&self) -> Vec<(String, Option<u32>)> {
+        let sheet_id_index: Vec<u32> = self.worksheets.iter().map(|s| s.sheet_id).collect();
+
+        let defined_names = self
+            .defined_names
+            .iter()
+            .map(|dn| {
+                let index = dn
+                    .sheet_id
+                    .and_then(|sheet_id| {
+                        // returns an Option<usize>
+                        sheet_id_index.iter().position(|&x| x == sheet_id)
+                    })
+                    // convert Option<usize> to Option<u32>
+                    .map(|pos| pos as u32);
+
+                (dn.name.clone(), index)
+            })
+            .collect::<Vec<_>>();
+        defined_names
+    }
+}
+
 fn get_column_from_ref(s: &str) -> String {
     let cs = s.chars();
     let mut column = Vec::<char>::new();
@@ -280,11 +304,12 @@ fn from_a1_to_rc(
     worksheets: &[String],
     context: String,
     tables: HashMap<String, Table>,
+    defined_names: Vec<(String, Option<u32>)>,
 ) -> Result<String, XlsxError> {
-    let mut parser = Parser::new(worksheets.to_owned(), tables);
+    let mut parser = Parser::new(worksheets.to_owned(), defined_names, tables);
     let cell_reference =
         parse_reference(&context).map_err(|error| XlsxError::Xml(error.to_string()))?;
-    let t = parser.parse(&formula, &Some(cell_reference));
+    let t = parser.parse(&formula, &cell_reference);
     Ok(to_rc_format(&t))
 }
 
@@ -681,6 +706,7 @@ pub(super) fn load_sheet<R: Read + std::io::Seek>(
     worksheets: &[String],
     tables: &HashMap<String, Table>,
     shared_strings: &mut Vec<String>,
+    defined_names: Vec<(String, Option<u32>)>,
 ) -> Result<(Worksheet, bool), XlsxError> {
     let sheet_name = &settings.name;
     let sheet_id = settings.id;
@@ -855,8 +881,13 @@ pub(super) fn load_sheet<R: Read + std::io::Seek>(
                                 // It's the mother cell. We do not use the ref attribute in IronCalc
                                 let formula = fs[0].text().unwrap_or("").to_string();
                                 let context = format!("{}!{}", sheet_name, cell_ref);
-                                let formula =
-                                    from_a1_to_rc(formula, worksheets, context, tables.clone())?;
+                                let formula = from_a1_to_rc(
+                                    formula,
+                                    worksheets,
+                                    context,
+                                    tables.clone(),
+                                    defined_names.clone(),
+                                )?;
                                 match index_map.get(&si) {
                                     Some(index) => {
                                         // The index for that formula already exists meaning we bumped into a daughter cell first
@@ -910,7 +941,13 @@ pub(super) fn load_sheet<R: Read + std::io::Seek>(
                         // Its a cell with a simple formula
                         let formula = fs[0].text().unwrap_or("").to_string();
                         let context = format!("{}!{}", sheet_name, cell_ref);
-                        let formula = from_a1_to_rc(formula, worksheets, context, tables.clone())?;
+                        let formula = from_a1_to_rc(
+                            formula,
+                            worksheets,
+                            context,
+                            tables.clone(),
+                            defined_names.clone(),
+                        )?;
 
                         match get_formula_index(&formula, &shared_formulas) {
                             Some(index) => formula_index = index,
@@ -1023,6 +1060,9 @@ pub(super) fn load_sheets<R: Read + std::io::Seek>(
     let mut sheets = Vec::new();
     let mut selected_sheet = 0;
     let mut sheet_index = 0;
+
+    let defined_names = workbook.get_defined_names_with_scope();
+
     for sheet in &workbook.worksheets {
         let sheet_name = &sheet.name;
         let rel_id = &sheet.id;
@@ -1044,8 +1084,15 @@ pub(super) fn load_sheets<R: Read + std::io::Seek>(
                     .ok_or_else(|| XlsxError::Xml("Corrupt XML structure".to_string()))?
                     .to_vec(),
             };
-            let (s, is_selected) =
-                load_sheet(archive, &path, settings, worksheets, tables, shared_strings)?;
+            let (s, is_selected) = load_sheet(
+                archive,
+                &path,
+                settings,
+                worksheets,
+                tables,
+                shared_strings,
+                defined_names.clone(),
+            )?;
             if is_selected {
                 selected_sheet = sheet_index;
             }