Support for the with statement

Add the with object (list) to the environment, and check properties
there if it's available.
Generate IR statements implementing with() support.
Add two new builtin methods to enter and leave a with scope.
Implement support for the builtin's in masm.
Make sure exception handling works across with scopes.

Change-Id: I8257a16cfccc91a1acedfd740ade711b016b33fd
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/qv4isel_masm.cpp b/qv4isel_masm.cpp
index 3bd4049547..270209a37f 100644
--- a/qv4isel_masm.cpp
+++ b/qv4isel_masm.cpp
@@ -264,6 +264,15 @@ void InstructionSelection::callActivationProperty(IR::Call *call, IR::Temp *resu
         generateFunctionCall(result, __qmljs_foreach_next_property_name, arg);
     }
         break;
+    case IR::Name::builtin_push_with: {
+        IR::Temp *arg = call->args->expr->asTemp();
+        assert(arg != 0);
+        generateFunctionCall(Void, __qmljs_builtin_push_with, arg, ContextRegister);
+    }
+        break;
+    case IR::Name::builtin_pop_with:
+        generateFunctionCall(Void, __qmljs_builtin_pop_with, ContextRegister);
+        break;
     }
 }