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Merge pull request 'feat(sheets): LAMBDA user-defined functions (#88)' (#115) from feat/lambda-function into main
+31
-1
+6
-1
src/sheets/formulas.ts
+6
-1
src/sheets/formulas.ts
···
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if (t.value === 'LET') {
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return this.parseLet();
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}
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// Special handling for LAMBDA — user-defined functions (#88)
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if (t.value === 'LAMBDA') {
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return this.parseLambda();
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}
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// Special handling for INDIRECT — needs access to getCellValue and crossSheetResolver
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if (t.value === 'INDIRECT') {
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return this.parseIndirect();
···
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this.expect(TokenType.RPAREN);
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// Evaluate body with params bound to call args
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-
const prevScope = { ...this._letScope };
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const prevScope = this._letScope ? { ...this._letScope } : {};
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this._letScope = this._letScope || {};
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for (let i = 0; i < paramNames.length; i++) {
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this._letScope[paramNames[i]] = callArgs[i] ?? 0;
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}
+25
tests/formulas.test.ts
+25
tests/formulas.test.ts
···
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expect(result).toBe('#N/A');
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});
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});
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// --- LAMBDA (#88) ---
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describe('LAMBDA', () => {
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it('basic: two params, addition', () => {
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expect(evalWith('LAMBDA(x, y, x+y)(2, 3)')).toBe(5);
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});
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it('single param', () => {
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expect(evalWith('LAMBDA(x, x*2)(7)')).toBe(14);
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});
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it('three params', () => {
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expect(evalWith('LAMBDA(a, b, c, a+b+c)(10, 20, 30)')).toBe(60);
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});
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it('works with cell references in call args', () => {
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const cells = { A1: 5, B1: 3 };
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expect(evalWith('LAMBDA(x, y, x-y)(A1, B1)', cells)).toBe(2);
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});
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it('returns #VALUE! when not immediately invoked', () => {
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expect(evalWith('LAMBDA(x, x+1)')).toBe('#VALUE!');
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});
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});