82 lines
2.7 KiB
JavaScript
82 lines
2.7 KiB
JavaScript
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/**
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* @license
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* Copyright (c) 2024 Handsoncode. All rights reserved.
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*/
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import { AstNodeType, collectDependencies } from './';
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const buildCacheEntry = (ast, relativeDependencies, hasVolatileFunction, hasStructuralChangeFunction) => ({
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ast,
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relativeDependencies,
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hasVolatileFunction,
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hasStructuralChangeFunction
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});
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export class Cache {
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constructor(functionRegistry) {
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this.functionRegistry = functionRegistry;
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this.cache = new Map();
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}
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set(hash, ast) {
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const astRelativeDependencies = collectDependencies(ast, this.functionRegistry);
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const cacheEntry = buildCacheEntry(ast, astRelativeDependencies, doesContainFunctions(ast, this.functionRegistry.isFunctionVolatile), doesContainFunctions(ast, this.functionRegistry.isFunctionDependentOnSheetStructureChange));
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this.cache.set(hash, cacheEntry);
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return cacheEntry;
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}
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get(hash) {
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return this.cache.get(hash);
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}
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maybeSetAndThenGet(hash, ast) {
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const entryFromCache = this.cache.get(hash);
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if (entryFromCache !== undefined) {
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return entryFromCache.ast;
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} else {
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this.set(hash, ast);
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return ast;
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}
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}
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}
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export const doesContainFunctions = (ast, functionCriterion) => {
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switch (ast.type) {
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case AstNodeType.EMPTY:
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case AstNodeType.NUMBER:
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case AstNodeType.STRING:
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case AstNodeType.ERROR:
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case AstNodeType.ERROR_WITH_RAW_INPUT:
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case AstNodeType.CELL_REFERENCE:
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case AstNodeType.CELL_RANGE:
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case AstNodeType.COLUMN_RANGE:
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case AstNodeType.ROW_RANGE:
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case AstNodeType.NAMED_EXPRESSION:
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return false;
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case AstNodeType.PERCENT_OP:
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case AstNodeType.PLUS_UNARY_OP:
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case AstNodeType.MINUS_UNARY_OP:
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{
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return doesContainFunctions(ast.value, functionCriterion);
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}
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case AstNodeType.CONCATENATE_OP:
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case AstNodeType.EQUALS_OP:
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case AstNodeType.NOT_EQUAL_OP:
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case AstNodeType.LESS_THAN_OP:
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case AstNodeType.GREATER_THAN_OP:
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case AstNodeType.LESS_THAN_OR_EQUAL_OP:
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case AstNodeType.GREATER_THAN_OR_EQUAL_OP:
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case AstNodeType.MINUS_OP:
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case AstNodeType.PLUS_OP:
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case AstNodeType.TIMES_OP:
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case AstNodeType.DIV_OP:
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case AstNodeType.POWER_OP:
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return doesContainFunctions(ast.left, functionCriterion) || doesContainFunctions(ast.right, functionCriterion);
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case AstNodeType.PARENTHESIS:
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return doesContainFunctions(ast.expression, functionCriterion);
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case AstNodeType.FUNCTION_CALL:
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{
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if (functionCriterion(ast.procedureName)) {
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return true;
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}
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return ast.args.some(arg => doesContainFunctions(arg, functionCriterion));
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}
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case AstNodeType.ARRAY:
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{
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return ast.args.some(row => row.some(arg => doesContainFunctions(arg, functionCriterion)));
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}
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}
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};
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