Adding cython v0.20.2 in third-party.

third_party/cython/src/Cython/Compiler/Tests/TestParseTreeTransforms.py

Index: third_party/cython/src/Cython/Compiler/Tests/TestParseTreeTransforms.py
diff --git a/third_party/cython/src/Cython/Compiler/Tests/TestParseTreeTransforms.py b/third_party/cython/src/Cython/Compiler/Tests/TestParseTreeTransforms.py
new file mode 100644
index 0000000000000000000000000000000000000000..b7cd0ee5464c5dfdda317bc7aba753b385476aac
--- /dev/null
+++ b/third_party/cython/src/Cython/Compiler/Tests/TestParseTreeTransforms.py
@@ -0,0 +1,285 @@
+import os
+
+from Cython.Compiler import CmdLine
+from Cython.TestUtils import TransformTest
+from Cython.Compiler.ParseTreeTransforms import *
+from Cython.Compiler.Nodes import *
+from Cython.Compiler import Main, Symtab
+
+
+class TestNormalizeTree(TransformTest):
+    def test_parserbehaviour_is_what_we_coded_for(self):
+        t = self.fragment(u"if x: y").root
+        self.assertLines(u"""
+(root): StatListNode
+  stats[0]: IfStatNode
+    if_clauses[0]: IfClauseNode
+      condition: NameNode
+      body: ExprStatNode
+        expr: NameNode
+""", self.treetypes(t))
+
+    def test_wrap_singlestat(self):
+        t = self.run_pipeline([NormalizeTree(None)], u"if x: y")
+        self.assertLines(u"""
+(root): StatListNode
+  stats[0]: IfStatNode
+    if_clauses[0]: IfClauseNode
+      condition: NameNode
+      body: StatListNode
+        stats[0]: ExprStatNode
+          expr: NameNode
+""", self.treetypes(t))
+
+    def test_wrap_multistat(self):
+        t = self.run_pipeline([NormalizeTree(None)], u"""
+            if z:
+                x
+                y
+        """)
+        self.assertLines(u"""
+(root): StatListNode
+  stats[0]: IfStatNode
+    if_clauses[0]: IfClauseNode
+      condition: NameNode
+      body: StatListNode
+        stats[0]: ExprStatNode
+          expr: NameNode
+        stats[1]: ExprStatNode
+          expr: NameNode
+""", self.treetypes(t))
+
+    def test_statinexpr(self):
+        t = self.run_pipeline([NormalizeTree(None)], u"""
+            a, b = x, y
+        """)
+        self.assertLines(u"""
+(root): StatListNode
+  stats[0]: SingleAssignmentNode
+    lhs: TupleNode
+      args[0]: NameNode
+      args[1]: NameNode
+    rhs: TupleNode
+      args[0]: NameNode
+      args[1]: NameNode
+""", self.treetypes(t))
+
+    def test_wrap_offagain(self):
+        t = self.run_pipeline([NormalizeTree(None)], u"""
+            x
+            y
+            if z:
+                x
+        """)
+        self.assertLines(u"""
+(root): StatListNode
+  stats[0]: ExprStatNode
+    expr: NameNode
+  stats[1]: ExprStatNode
+    expr: NameNode
+  stats[2]: IfStatNode
+    if_clauses[0]: IfClauseNode
+      condition: NameNode
+      body: StatListNode
+        stats[0]: ExprStatNode
+          expr: NameNode
+""", self.treetypes(t))
+
+
+    def test_pass_eliminated(self):
+        t = self.run_pipeline([NormalizeTree(None)], u"pass")
+        self.assert_(len(t.stats) == 0)
+
+class TestWithTransform(object): # (TransformTest): # Disabled!
+
+    def test_simplified(self):
+        t = self.run_pipeline([WithTransform(None)], u"""
+        with x:
+            y = z ** 3
+        """)
+
+        self.assertCode(u"""
+
+        $0_0 = x
+        $0_2 = $0_0.__exit__
+        $0_0.__enter__()
+        $0_1 = True
+        try:
+            try:
+                $1_0 = None
+                y = z ** 3
+            except:
+                $0_1 = False
+                if (not $0_2($1_0)):
+                    raise
+        finally:
+            if $0_1:
+                $0_2(None, None, None)
+
+        """, t)
+
+    def test_basic(self):
+        t = self.run_pipeline([WithTransform(None)], u"""
+        with x as y:
+            y = z ** 3
+        """)
+        self.assertCode(u"""
+
+        $0_0 = x
+        $0_2 = $0_0.__exit__
+        $0_3 = $0_0.__enter__()
+        $0_1 = True
+        try:
+            try:
+                $1_0 = None
+                y = $0_3
+                y = z ** 3
+            except:
+                $0_1 = False
+                if (not $0_2($1_0)):
+                    raise
+        finally:
+            if $0_1:
+                $0_2(None, None, None)
+
+        """, t)
+
+
+class TestInterpretCompilerDirectives(TransformTest):
+    """
+    This class tests the parallel directives AST-rewriting and importing.
+    """
+
+    # Test the parallel directives (c)importing
+
+    import_code = u"""
+        cimport cython.parallel
+        cimport cython.parallel as par
+        from cython cimport parallel as par2
+        from cython cimport parallel
+
+        from cython.parallel cimport threadid as tid
+        from cython.parallel cimport threadavailable as tavail
+        from cython.parallel cimport prange
+    """
+
+    expected_directives_dict = {
+        u'cython.parallel': u'cython.parallel',
+        u'par': u'cython.parallel',
+        u'par2': u'cython.parallel',
+        u'parallel': u'cython.parallel',
+
+        u"tid": u"cython.parallel.threadid",
+        u"tavail": u"cython.parallel.threadavailable",
+        u"prange": u"cython.parallel.prange",
+    }
+
+
+    def setUp(self):
+        super(TestInterpretCompilerDirectives, self).setUp()
+
+        compilation_options = Main.CompilationOptions(Main.default_options)
+        ctx = compilation_options.create_context()
+
+        transform = InterpretCompilerDirectives(ctx, ctx.compiler_directives)
+        transform.module_scope = Symtab.ModuleScope('__main__', None, ctx)
+        self.pipeline = [transform]
+
+        self.debug_exception_on_error = DebugFlags.debug_exception_on_error
+
+    def tearDown(self):
+        DebugFlags.debug_exception_on_error = self.debug_exception_on_error
+
+    def test_parallel_directives_cimports(self):
+        self.run_pipeline(self.pipeline, self.import_code)
+        parallel_directives = self.pipeline[0].parallel_directives
+        self.assertEqual(parallel_directives, self.expected_directives_dict)
+
+    def test_parallel_directives_imports(self):
+        self.run_pipeline(self.pipeline,
+                          self.import_code.replace(u'cimport', u'import'))
+        parallel_directives = self.pipeline[0].parallel_directives
+        self.assertEqual(parallel_directives, self.expected_directives_dict)
+
+
+# TODO: Re-enable once they're more robust.
+if sys.version_info[:2] >= (2, 5) and False:
+    from Cython.Debugger import DebugWriter
+    from Cython.Debugger.Tests.TestLibCython import DebuggerTestCase
+else:
+    # skip test, don't let it inherit unittest.TestCase
+    DebuggerTestCase = object
+
+class TestDebugTransform(DebuggerTestCase):
+
+    def elem_hasattrs(self, elem, attrs):
+        # we shall supporteth python 2.3 !
+        return all([attr in elem.attrib for attr in attrs])
+
+    def test_debug_info(self):
+        try:
+            assert os.path.exists(self.debug_dest)
+
+            t = DebugWriter.etree.parse(self.debug_dest)
+            # the xpath of the standard ElementTree is primitive, don't use
+            # anything fancy
+            L = list(t.find('/Module/Globals'))
+            # assertTrue is retarded, use the normal assert statement
+            assert L
+            xml_globals = dict(
+                            [(e.attrib['name'], e.attrib['type']) for e in L])
+            self.assertEqual(len(L), len(xml_globals))
+
+            L = list(t.find('/Module/Functions'))
+            assert L
+            xml_funcs = dict([(e.attrib['qualified_name'], e) for e in L])
+            self.assertEqual(len(L), len(xml_funcs))
+
+            # test globals
+            self.assertEqual('CObject', xml_globals.get('c_var'))
+            self.assertEqual('PythonObject', xml_globals.get('python_var'))
+
+            # test functions
+            funcnames = ('codefile.spam', 'codefile.ham', 'codefile.eggs',
+                         'codefile.closure', 'codefile.inner')
+            required_xml_attrs = 'name', 'cname', 'qualified_name'
+            assert all([f in xml_funcs for f in funcnames])
+            spam, ham, eggs = [xml_funcs[funcname] for funcname in funcnames]
+
+            self.assertEqual(spam.attrib['name'], 'spam')
+            self.assertNotEqual('spam', spam.attrib['cname'])
+            assert self.elem_hasattrs(spam, required_xml_attrs)
+
+            # test locals of functions
+            spam_locals = list(spam.find('Locals'))
+            assert spam_locals
+            spam_locals.sort(key=lambda e: e.attrib['name'])
+            names = [e.attrib['name'] for e in spam_locals]
+            self.assertEqual(list('abcd'), names)
+            assert self.elem_hasattrs(spam_locals[0], required_xml_attrs)
+
+            # test arguments of functions
+            spam_arguments = list(spam.find('Arguments'))
+            assert spam_arguments
+            self.assertEqual(1, len(list(spam_arguments)))
+
+            # test step-into functions
+            step_into = spam.find('StepIntoFunctions')
+            spam_stepinto = [x.attrib['name'] for x in step_into]
+            assert spam_stepinto
+            self.assertEqual(2, len(spam_stepinto))
+            assert 'puts' in spam_stepinto
+            assert 'some_c_function' in spam_stepinto
+        except:
+            f = open(self.debug_dest)
+            try:
+                print(f.read())
+            finally:
+                f.close()
+            raise
+
+
+
+if __name__ == "__main__":
+    import unittest
+    unittest.main()