misc/recentrunes
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Ian learns how to use exceptions in JavaScript.

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Ian Gulliver
2014-06-30 20:33:35 -07:00
parent a3b4eafd73
commit 1586375bba
1 changed files with 3 additions and 2 deletions
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recentrunes.js
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@@ -576,7 +576,8 @@ rr.ZeroOrMore_.prototype.match = function(context) {
return { 'done': true }; return { 'done': true };
} }
if (next['value']['context'].remaining() == context.remaining()) { if (next['value']['context'].remaining() == context.remaining()) {
throw "Child of ZeroOrMore didn't consume input; grammar bug?"; throw new Error(
"Child of ZeroOrMore didn't consume input; grammar bug?");
} }
return next; return next;
}.bind(this) }.bind(this)
@@ -751,7 +752,7 @@ rr.Context.prototype.remaining = function() {
*/ */
rr.Context.prototype.advance = function(numChars) { rr.Context.prototype.advance = function(numChars) {
if (!numChars) { if (!numChars) {
throw 'Context.advance(0) called'; throw new Error('Context.advance(0) called');
} }
var context = this.copy(); var context = this.copy();
context.inputIndex += numChars; context.inputIndex += numChars;