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Add dot question token

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This commit is contained in:
Sebastian McKenzie 2014-12-10 15:21:19 +11:00
parent 404058f9da
commit 876eed9c04
1 changed files with 6 additions and 2 deletions
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8
acorn.js
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@ -431,6 +431,7 @@
var _ellipsis = {type: "...", prefix: true, beforeExpr: true};
var _doubleColon = { type: "::", beforeExpr: true };
var _at = { type: '@' };
var _dotQuestion = { type: '.?' };
// Operators. These carry several kinds of properties to help the
// parser use them properly (the presence of these properties is
@ -736,7 +737,10 @@
var next = input.charCodeAt(tokPos + 1);
if (next >= 48 && next <= 57) return readNumber(true);
var next2 = input.charCodeAt(tokPos + 2);
if (options.ecmaVersion >= 6 && next === 46 && next2 === 46) { // 46 = dot '.'
if (options.playground && next === 63) { // 63
tokPos += 2;
return finishToken(_dotQuestion);
} else if (options.ecmaVersion >= 6 && next === 46 && next2 === 46) { // 46 = dot '.'
tokPos += 3;
return finishToken(_ellipsis);
} else {
@ -2380,7 +2384,7 @@
node.test = expr;
var consequent = node.consequent = parseExpression(true);
if (consequent.type === "BindMemberExpression" && tokType !== _colon) {
// this is a hack to make, revisit at a later date
// this is a hack, revisit at a later date
if (consequent.arguments.length) {
node.alternate = {
type: "CallExpression",