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support destructured literals (#4278)

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This commit is contained in:
Alex Lam S.L
2020-11-17 00:01:24 +00:00
committed by GitHub
parent 42e34c870a
commit e5f80afc53
10 changed files with 2477 additions and 305 deletions
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20
lib/scope.js
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@@ -204,7 +204,17 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options) {
// pass 2: find back references and eval
self.globals = new Dictionary();
var in_arg = [];
var tw = new TreeWalker(function(node) {
if (node instanceof AST_Lambda) {
in_arg.push(node);
node.argnames.forEach(function(argname) {
argname.walk(tw);
});
in_arg.pop();
walk_body(node, tw);
return true;
}
if (node instanceof AST_LoopControl) {
if (node.label) node.label.thedef.references.push(node);
return true;
@@ -212,6 +222,16 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options) {
if (node instanceof AST_SymbolRef) {
var name = node.name;
var sym = node.scope.find_variable(name);
for (var i = in_arg.length; i > 0 && sym;) {
i = in_arg.lastIndexOf(sym.scope, i - 1);
if (i < 0) break;
var decl = sym.orig[0];
if (decl instanceof AST_SymbolFunarg || decl instanceof AST_SymbolLambda) {
node.in_arg = true;
break;
}
sym = sym.scope.parent_scope.find_variable(name);
}
if (!sym) {
sym = self.def_global(node);
} else if (name == "arguments" && sym.scope instanceof AST_Lambda) {