Function parseModel

chapter17/vue.js:7220–7258

(val)

  function parseModel (val) {
    // Fix https://github.com/vuejs/vue/pull/7730
    // allow v-model="obj.val " (trailing whitespace)
    val = val.trim();
    len = val.length;

    if (val.indexOf('[') < 0 || val.lastIndexOf(']') < len - 1) {
      index$1 = val.lastIndexOf('.');
      if (index$1 > -1) {
        return {
          exp: val.slice(0, index$1),
          key: '"' + val.slice(index$1 + 1) + '"'
        }
      } else {
        return {
          exp: val,
          key: null
        }
      }
    }

    str = val;
    index$1 = expressionPos = expressionEndPos = 0;

    while (!eof()) {
      chr = next();
      /* istanbul ignore if */
      if (isStringStart(chr)) {
        parseString(chr);
      } else if (chr === 0x5B) {
        parseBracket(chr);
      }
    }

    return {
      exp: val.slice(0, expressionPos),
      key: val.slice(expressionPos + 1, expressionEndPos)
    }
  }

  function next () {
    return str.charCodeAt(++index$1)