apex-parser

import { ApexLexer, CaseInsensitiveInputStream, CommonTokenStream, ApexParser } from 'apex-parser'; function parseApexCode(code: string): any { const lexer = new ApexLexer(new CaseInsensitiveInputStream(code)); const tokens = new CommonTokenStream(lexer); const parser = new ApexParser(tokens); // Optionally add error listeners for more robust error handling // parser.removeErrorListeners(); // parser.addErrorListener(new MyErrorListener()); // The root context for a class file is compilationUnit() const context = parser.compilationUnit(); console.log('Successfully parsed Apex code.'); // You can traverse the parse tree from the 'context' object. // Example: Printing the tree structure (simplified, for illustration) // console.log(context.toStringTree(parser.ruleNames)); return context; } const apexClassCode = ` public class MyExampleClass { public void myMethod(String param) { // Example SOQL query List<Account> accounts = [SELECT Id, Name FROM Account WHERE Name = :param]; System.debug('Accounts found: ' + accounts.size()); } } `; const parseTree = parseApexCode(apexClassCode); // In a real application, you would now use ANTLR4 visitors or listeners // to traverse 'parseTree' and extract information or perform analysis. console.log(`Root context type: ${parseTree.constructor.name}`);