}
}, AST_IterationStatement);
-var AST_ForIn = DEFNODE("ForIn", "init name object", {
+var AST_ForIn = DEFNODE("ForIn", "init object", {
$documentation: "A `for ... in` statement",
$propdoc: {
init: "[AST_Node] the `for/in` initialization code",
- name: "[AST_SymbolRef?] the loop variable, only if `init` is AST_Var",
object: "[AST_Node] the object that we're looping through"
},
_walk: function(visitor) {
};
function loop_body(x) {
- if (x instanceof AST_Switch) return x;
- if (x instanceof AST_For || x instanceof AST_ForIn || x instanceof AST_DWLoop) {
- return (x.body instanceof AST_BlockStatement ? x.body : x);
+ if (x instanceof AST_IterationStatement) {
+ return x.body instanceof AST_BlockStatement ? x.body : x;
}
return x;
};
if (!(expr.body instanceof AST_Block)) {
extract_candidates(expr.body);
}
+ } else if (expr instanceof AST_ForIn) {
+ extract_candidates(expr.object);
+ if (!(expr.body instanceof AST_Block)) {
+ extract_candidates(expr.body);
+ }
} else if (expr instanceof AST_If) {
extract_candidates(expr.condition);
if (!(expr.body instanceof AST_Block)) {
};
function for_in(init) {
- var lhs = init instanceof AST_Var ? init.definitions[0].name : null;
var obj = expression(true);
expect(")");
return new AST_ForIn({
init : init,
- name : lhs,
object : obj,
body : in_loop(statement)
});
}
}
}
+
+cascade_forin: {
+ options = {
+ collapse_vars: true,
+ }
+ input: {
+ var a;
+ function f(b) {
+ return [ b, b, b ];
+ }
+ for (var c in a = console, f(a))
+ console.log(c);
+ }
+ expect: {
+ var a;
+ function f(b) {
+ return [ b, b, b ];
+ }
+ for (var c in f(a = console))
+ console.log(c);
+ }
+ expect_stdout: [
+ "0",
+ "1",
+ "2",
+ ]
+}