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clean up async function declaration parsing

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This commit is contained in:
Sebastian McKenzie 2015-01-25 23:44:17 +11:00
parent c297f5a57f
commit 766e42d140
1 changed files with 7 additions and 17 deletions
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24
acorn.js
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@ -2622,20 +2622,6 @@
raise(tokStart, "'import' and 'export' may only appear at the top level"); raise(tokStart, "'import' and 'export' may only appear at the top level");
return starttype === _import ? parseImport(node) : parseExport(node); return starttype === _import ? parseImport(node) : parseExport(node);
case _name:
/*if (options.ecmaVersion >= 7 && tokVal === "async") {
var start = storeCurrentPos();
var expr = startNode();
var id = parseIdent();
if (tokType === _function) {
next();
return parseFunction(expr, true, true);
} else {
// ???
}
}*/
// If the statement does not start with a statement keyword or a // If the statement does not start with a statement keyword or a
// brace, it's an ExpressionStatement or LabeledStatement. We // brace, it's an ExpressionStatement or LabeledStatement. We
// simply start parsing an expression, and afterwards, if the // simply start parsing an expression, and afterwards, if the
@ -2644,6 +2630,13 @@
default: default:
var maybeName = tokVal, expr = parseExpression(false, true); var maybeName = tokVal, expr = parseExpression(false, true);
if (options.ecmaVersion >= 7 && starttype === _name && maybeName === "async" && tokType === _function) {
next();
var func = parseFunctionStatement(node);
func.async = true;
return func;
}
if (starttype === _name && expr.type === "Identifier") { if (starttype === _name && expr.type === "Identifier") {
if (eat(_colon)) { if (eat(_colon)) {
return parseLabeledStatement(node, maybeName, expr); return parseLabeledStatement(node, maybeName, expr);
@ -3233,9 +3226,6 @@
// normal functions // normal functions
if (tokType === _function) { if (tokType === _function) {
// no line terminator after `async` contextual keyword
if (canInsertSemicolon()) return id;
next(); next();
return parseFunction(node, false, true); return parseFunction(node, false, true);
} }