Code coverage report for src/parser/switch.js

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/*!
 * Copyright (C) 2017 Glayzzle (BSD3 License)
 * @authors https://github.com/glayzzle/php-parser/graphs/contributors
 * @url http://glayzzle.com
 */
"use strict";
 
module.exports = {
  /**
   * Reads a switch statement
   * ```ebnf
   *  switch ::= T_SWITCH '(' expr ')' switch_case_list
   * ```
   * @return {Switch}
   * @see http://php.net/manual/en/control-structures.switch.php
   */
  read_switch: function() {
    this.expect(this.tok.T_SWITCH) && this.next();
    var result = this.node('switch'), test, body, shortForm;
    this.expect('(') && this.next();
    test = this.read_expr();
    this.expect(')') && this.next();
    shortForm = (this.token === ':');
    body = this.read_switch_case_list();
    return result(test, body, shortForm);
  }
  /**
   * ```ebnf
   *  switch_case_list ::= '{' ';'? case_list* '}' | ':' ';'? case_list* T_ENDSWITCH ';'
   * ```
   * @see https://github.com/php/php-src/blob/master/Zend/zend_language_parser.y#L566
   */
  ,read_switch_case_list: function() {
    // DETECT SWITCH MODE
    var expect = null,
      result = this.node('block'),
      items = [];
    if (this.token === '{') {
      expect = '}';
    } else if (this.token === ':') {
      expect = this.tok.T_ENDSWITCH;
    } else {
      this.expect(['{', ':']);
    }
    // OPTIONNAL ';'
    // https://github.com/php/php-src/blob/master/Zend/zend_language_parser.y#L570
    if (this.next().token === ';') {
      this.next();
    }
    // IGNORE THE CLOSE TAG TOKEN WITH SHORT MODE
    if (this.token === this.tok.T_CLOSE_TAG) {
      this.next();
    }
    // EXTRACTING CASES
    while(this.token !== this.EOF && this.token !== expect) {
      items.push( this.read_case_list(expect) );
    }
    // CHECK END TOKEN
    this.expect(expect) && this.next();
    if (expect === this.tok.T_ENDSWITCH) {
      this.expectEndOfStatement();
    }
    return result(null, items);
  }
  /**
   * ```ebnf
   *   case_list ::= ((T_CASE expr) | T_DEFAULT) (':' | ';') inner_statement*
   * ```
   */
  ,read_case_list: function(stopToken) {
    var result = this.node('case'), test = null, body = null, items = [];
    if (this.token === this.tok.T_CASE) {
      test = this.next().read_expr();
    } else if (this.token === this.tok.T_DEFAULT) {
      // the defaut entry - no condition
      this.next();
    } else {
      this.expect([this.tok.T_CASE, this.tok.T_DEFAULT]);
    }
    this.expect([':', ';']) && this.next();
    body = this.node('block');
    while(
      this.token != this.EOF
      && this.token !== stopToken
      && this.token !== this.tok.T_CASE
      && this.token !== this.tok.T_DEFAULT
    ) {
      items.push(this.read_inner_statement());
    }
    return result(
      test, items.length > 0 ? body(null, items) : null
    );
  }
};