sormy / flex-js Goto Github PK

const Lexer = require('flex-js');
const lexer = new Lexer();
lexer.setIgnoreCase(true);
const s = "* @return this is a test.";
lexer.addDefinition('COMMENT', /\s*\*\s+/);
lexer.addDefinition('RETURN', /@return/);
lexer.addDefinition('DESCRIPTION', /.*/);
lexer.addRule(/{COMMENT}{RETURN}{DESCRIPTION}/, function (lexer : any) {
  console.log('Found' + lexer.text);
});
lexer.setSource(s);
lexer.lex();

const Lexer = require('flex-js');
var lexer = new Lexer();
// options
lexer.setIgnoreCase(true);  // does not make sense for this scanner, just for reference
// definitions
lexer.addDefinition('DIGIT', /[0-9]/);
// rules
lexer.addRule(/{DIGIT}+\.{DIGIT}+/, function (lexer) {
  console.log('Found float: ' + lexer.text);
});
lexer.addRule(/\s+/);
// code
lexer.setSource('1.2 3.4 5.6');
lexer.lex();

  if (!re) return undefined;