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Make classes implicitly strict mode

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This commit is contained in:
Anthony Van de Gejuchte
2016-09-11 15:06:10 +02:00
parent 88f6ff38d1
commit 947b8750e8
5 changed files with 71 additions and 5 deletions
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5
lib/ast.js
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@@ -1292,12 +1292,15 @@ TreeWalker.prototype = {
this.directives = Object.create(this.directives);
} else if (node instanceof AST_Directive) {
this.directives[node.value] = this.directives[node.value] ? "up" : true;
} else if (node instanceof AST_Class) {
this.directives = Object.create(this.directives);
this.directives["use strict"] = this.directives["use strict"] ? "up" : true;
}
this.stack.push(node);
},
pop: function(node) {
this.stack.pop();
if (node instanceof AST_Lambda) {
if (node instanceof AST_Lambda || node instanceof AST_Class) {
this.directives = Object.getPrototypeOf(this.directives);
}
},

5
lib/parse.js
View File

@@ -2039,6 +2039,9 @@ function parse($TEXT, options) {
function class_(KindOfClass) {
var start, method, class_name, extends_, a = [];
S.input.push_directives_stack(); // Push directive stack, but not scope stack
S.input.add_directive("use strict");
if (S.token.type == "name" && S.token.value != "extends") {
class_name = as_symbol(KindOfClass === AST_DefClass ? AST_SymbolDefClass : AST_SymbolClass);
}
@@ -2063,6 +2066,8 @@ function parse($TEXT, options) {
if (is("punc", ";")) { next(); }
}
S.input.pop_directives_stack();
next();
return new KindOfClass({