Last set of change to get regression tests to pass

Remove the only test in the syntax module.  It ends up that the
transformer must handle this error case.

In the transformer, check for a list compression in com_assign_list()
by looking for a list_for node where a comma is expected.

In pycodegen.compile() re-raise the SyntaxError rather than catching
it and exiting

Lib/compiler/pycodegen.py

@@ -49,7 +49,7 @@ def compile(filename, display=0):
     try:
         mod.compile(display)
     except SyntaxError, err:
-        print "SyntaxError:", err
+        raise
     else:
         f = open(filename + "c", "wb")
         mod.dump(f)

Lib/compiler/syntax.py

@@ -39,7 +39,8 @@ def error(self, node, msg):
     def visitAssign(self, node):
         # the transformer module handles many of these
         for target in node.nodes:
-            if isinstance(target, ast.AssList):
-                if target.lineno is None:
-                    target.lineno = node.lineno
-                self.error(target, "can't assign to list comprehension")
+            pass
+##            if isinstance(target, ast.AssList):
+##                if target.lineno is None:
+##                    target.lineno = node.lineno
+##                self.error(target, "can't assign to list comprehension")

Lib/compiler/transformer.py

@@ -943,6 +943,10 @@ def com_assign_tuple(self, node, assigning):
     def com_assign_list(self, node, assigning):
         assigns = []
         for i in range(1, len(node), 2):
+            if i + 1 < len(node):
+                if node[i + 1][0] == symbol.list_for:
+                    raise SyntaxError, "can't assign to list comprehension"
+                assert node[i + 1][0] == token.COMMA, node[i + 1]
             assigns.append(self.com_assign(node[i], assigning))
         return AssList(assigns)
 

Tools/compiler/compiler/pycodegen.py

@@ -49,7 +49,7 @@ def compile(filename, display=0):
     try:
         mod.compile(display)
     except SyntaxError, err:
-        print "SyntaxError:", err
+        raise
     else:
         f = open(filename + "c", "wb")
         mod.dump(f)

Tools/compiler/compiler/syntax.py

@@ -39,7 +39,8 @@ def error(self, node, msg):
     def visitAssign(self, node):
         # the transformer module handles many of these
         for target in node.nodes:
-            if isinstance(target, ast.AssList):
-                if target.lineno is None:
-                    target.lineno = node.lineno
-                self.error(target, "can't assign to list comprehension")
+            pass
+##            if isinstance(target, ast.AssList):
+##                if target.lineno is None:
+##                    target.lineno = node.lineno
+##                self.error(target, "can't assign to list comprehension")

Tools/compiler/compiler/transformer.py

@@ -943,6 +943,10 @@ def com_assign_tuple(self, node, assigning):
     def com_assign_list(self, node, assigning):
         assigns = []
         for i in range(1, len(node), 2):
+            if i + 1 < len(node):
+                if node[i + 1][0] == symbol.list_for:
+                    raise SyntaxError, "can't assign to list comprehension"
+                assert node[i + 1][0] == token.COMMA, node[i + 1]
             assigns.append(self.com_assign(node[i], assigning))
         return AssList(assigns)