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throw a syntax error if you try to use the fat arrow to define a class constructor.

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This commit is contained in:
Jeremy Ashkenas
2010-06-30 22:03:20 -04:00
parent 7a5f014014
commit 9a8a707016
2 changed files with 4 additions and 0 deletions
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3
lib/nodes.js
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@@ -739,6 +739,9 @@
pvar = _e[0]; pvar = _e[0];
func = _e[1]; func = _e[1];
if (pvar && pvar.base.value === 'constructor' && func instanceof CodeNode) { if (pvar && pvar.base.value === 'constructor' && func instanceof CodeNode) {
if (func.bound) {
throw new Error("cannot define a constructor as a bound function.");
}
func.name = className; func.name = className;
func.body.push(new ReturnNode(literal('this'))); func.body.push(new ReturnNode(literal('this')));
this.variable = new ValueNode(this.variable); this.variable = new ValueNode(this.variable);

1
src/nodes.coffee
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@@ -647,6 +647,7 @@ exports.ClassNode: class ClassNode extends BaseNode
for prop in @properties for prop in @properties
[pvar, func]: [prop.variable, prop.value] [pvar, func]: [prop.variable, prop.value]
if pvar and pvar.base.value is 'constructor' and func instanceof CodeNode if pvar and pvar.base.value is 'constructor' and func instanceof CodeNode
throw new Error "cannot define a constructor as a bound function." if func.bound
func.name: className func.name: className
func.body.push new ReturnNode literal 'this' func.body.push new ReturnNode literal 'this'
@variable: new ValueNode @variable @variable: new ValueNode @variable