MemberExpression: function()

in escodegen.js [1910:1943]


        MemberExpression: function (expr, precedence, flags) {
            var result, fragment;

            // F_ALLOW_UNPARATH_NEW becomes false.
            result = [this.generateExpression(expr.object, Precedence.Call, (flags & F_ALLOW_CALL) ? E_TTF : E_TFF)];

            if (expr.computed) {
                result.push('[');
                result.push(this.generateExpression(expr.property, Precedence.Sequence, flags & F_ALLOW_CALL ? E_TTT : E_TFT));
                result.push(']');
            } else {
                if (expr.object.type === Syntax.Literal && typeof expr.object.value === 'number') {
                    fragment = toSourceNodeWhenNeeded(result).toString();
                    // When the following conditions are all true,
                    //   1. No floating point
                    //   2. Don't have exponents
                    //   3. The last character is a decimal digit
                    //   4. Not hexadecimal OR octal number literal
                    // we should add a floating point.
                    if (
                            fragment.indexOf('.') < 0 &&
                            !/[eExX]/.test(fragment) &&
                            esutils.code.isDecimalDigit(fragment.charCodeAt(fragment.length - 1)) &&
                            !(fragment.length >= 2 && fragment.charCodeAt(0) === 48)  // '0'
                            ) {
                        result.push(' ');
                    }
                }
                result.push('.');
                result.push(generateIdentifier(expr.property));
            }

            return parenthesize(result, Precedence.Member, precedence);
        },