Author: Stephan <[email protected]>
Branch:
Changeset: r113:9e4d9c3ae29c
Date: 2011-07-20 17:47 +0200
http://bitbucket.org/pypy/lang-js/changeset/9e4d9c3ae29c/
Log: added declare_variable method to execution context
diff --git a/js/jsexecution_context.py b/js/jsexecution_context.py
--- a/js/jsexecution_context.py
+++ b/js/jsexecution_context.py
@@ -28,6 +28,12 @@
p = Property(identifier, value)
self._identifier_set(identifier, p)
+ def declare_variable(self, identifier):
+ from js.jsobj import w_Undefined, DD
+ self.values.addname(identifier)
+ p = Property(identifier, w_Undefined, flags = DD)
+ self._identifier_set_local(identifier, p)
+
def _identifier_set_local(self, identifier, value):
self.values.set(identifier, value)
diff --git a/js/test/test_execution_context.py
b/js/test/test_execution_context.py
--- a/js/test/test_execution_context.py
+++ b/js/test/test_execution_context.py
@@ -2,7 +2,7 @@
from js.jsexecution_context import ExecutionContext
from js.execution import ThrowException
-from js.jsobj import Property
+from js.jsobj import Property, w_Undefined
class TestExecutionContext(object):
def test_identifier_set_local(self):
@@ -140,3 +140,22 @@
assert p_foo_0.value == 0
assert p_foo_1.value == 42
+
+ def test_declare_variable(self):
+ ctx = None
+ parent = ExecutionContext()
+ context = ExecutionContext(parent)
+
+ p_foo = Property('foo', 0)
+ parent._identifier_set_local('foo', p_foo)
+
+ assert context.resolve_identifier(ctx, 'foo') == 0
+
+ context.declare_variable('foo')
+ assert context.resolve_identifier(ctx, 'foo') == w_Undefined
+
+ context.assign('foo', 42)
+
+ assert p_foo.value == 0
+ assert context._identifier_get_local('foo').value == 42
+ assert context.resolve_identifier(ctx, 'foo') == 42
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