php-parser/src/lexer/comments.js

Parse PHP code from JS and returns its AST

/**
 * Copyright (C) 2018 Glayzzle (BSD3 License)
 * @authors https://github.com/glayzzle/php-parser/graphs/contributors
 * @url http://glayzzle.com
 */
"use strict";

module.exports = {
  /*
   * Reads a single line comment
   */
  T_COMMENT: function () {
    while (this.offset < this.size) {
      const ch = this.input();
      if (ch === "\n" || ch === "\r") {
        return this.tok.T_COMMENT;
      } else if (
        ch === "?" &&
        !this.aspTagMode &&
        this._input[this.offset] === ">"
      ) {
        this.unput(1);
        return this.tok.T_COMMENT;
      } else if (
        ch === "%" &&
        this.aspTagMode &&
        this._input[this.offset] === ">"
      ) {
        this.unput(1);
        return this.tok.T_COMMENT;
      }
    }
    return this.tok.T_COMMENT;
  },
  /*
   * Behaviour : https://github.com/php/php-src/blob/master/Zend/zend_language_scanner.l#L1927
   */
  T_DOC_COMMENT: function () {
    let ch = this.input();
    let token = this.tok.T_COMMENT;
    if (ch === "*") {
      // started with '/*' , check is next is '*'
      ch = this.input();
      if (this.is_WHITESPACE()) {
        // check if next is WHITESPACE
        token = this.tok.T_DOC_COMMENT;
      }
      if (ch === "/") {
        return token;
      } else {
        this.unput(1); // reset
      }
    }
    while (this.offset < this.size) {
      ch = this.input();
      if (ch === "*" && this._input[this.offset] === "/") {
        this.input();
        break;
      }
    }
    return token;
  },
};