Function switch_gen

deps/v8/test/mjsunit/switch.js:482–516

(clause_type, feedback, optimize)

    };

function switch_gen(clause_type, feedback, optimize) {
  var values = clause_values[clause_type];

  function opt(fn) {
    if (optimize) %PrepareFunctionForOptimization(fn);
    if (feedback === 'all') {
      values.forEach(fn);
    } else if (Array.isArray(feedback)) {
      // Non-target
      values.filter(function(v) {
        return feedback.indexOf(v) === -1;
      }).forEach(fn);
    } else if (feedback !== undefined) {
      // Target
      fn(feedback);
    } else {
      // None
    }

    if (optimize) %OptimizeFunctionOnNextCall(fn);

    return fn;
  };

  return opt(new Function(
      'tag',
      '"' + (test_id++) + '";' +
      'switch(tag) {' +
      values.map(function(value) {
        return 'case ' + JSON.stringify(value) + ': return' +
               JSON.stringify('ok-' + value);
      }).join(';') +
      '}'
  ));
};

function test_switch(clause_type, test_type, feedback, optimize) {
  var pairs = [],