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support for directives

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This commit is contained in:
Mihai Bazon
2012-09-18 13:21:09 +03:00
parent 21968285e8
commit 3da0ac4897
5 changed files with 27 additions and 4 deletions
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11
lib/scope.js
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@@ -82,6 +82,11 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(){
scope = save_scope;
return true; // don't descend again in TreeWalker
}
if (node instanceof AST_Directive) {
node.scope = scope;
push_uniq(scope.directives, node.value);
return true;
}
if (node instanceof AST_With) {
for (var s = scope; s; s = s.parent_scope)
s.uses_with = true;
@@ -193,6 +198,7 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(){
});
AST_Scope.DEFMETHOD("init_scope_vars", function(){
this.directives = []; // contains the directives defined in this scope, i.e. "use strict"
this.variables = {}; // map name to AST_SymbolVar (variables defined in this scope; includes functions)
this.functions = {}; // map name to AST_SymbolDefun (functions defined in this scope)
this.uses_with = false; // will be set to true if this or some nested scope uses the `with` statement
@@ -233,6 +239,11 @@ AST_Scope.DEFMETHOD("find_variable", function(name){
: (this.parent_scope && this.parent_scope.find_variable(name));
});
AST_Scope.DEFMETHOD("has_directive", function(value){
return this.parent_scope && this.parent_scope.has_directive(value)
|| (this.directives.indexOf(value) >= 0 ? this : null);
});
AST_Scope.DEFMETHOD("def_function", function(symbol){
this.functions[symbol.name] = this.def_variable(symbol);
});