1 files changed, 309 insertions, 0 deletions
diff --git a/test/utils/python/generate_java_main.py b/test/utils/python/generate_java_main.py
new file mode 100755
index 0000000000..f66d0dd372
--- /dev/null
+++ b/test/utils/python/generate_java_main.py
@@ -0,0 +1,309 @@
+#!/usr/bin/python3
+#
+# Copyright (C) 2015 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""
+Generate Java Main file from a classes.xml file.
+"""
+
+import os
+import sys
+from pathlib import Path
+
+BUILD_TOP = os.getenv("ANDROID_BUILD_TOP")
+if BUILD_TOP is None:
+  print("ANDROID_BUILD_TOP not set. Please run build/envsetup.sh", file=sys.stderr)
+  sys.exit(1)
+
+# Allow us to import utils and mixins.
+sys.path.append(str(Path(BUILD_TOP)/"art"/"test"/"utils"/"python"))
+
+from testgen.utils import get_copyright
+import testgen.mixins as mixins
+
+from collections import namedtuple
+import itertools
+import functools
+import xml.etree.ElementTree as ET
+
+class MainClass(mixins.DumpMixin, mixins.Named, mixins.JavaFileMixin):
+  """
+  A mainclass and main method for this test.
+  """
+
+  MAIN_CLASS_TEMPLATE = """{copyright}
+class Main {{
+{test_groups}
+{test_funcs}
+{main_func}
+}}
+"""
+
+  MAIN_FUNCTION_TEMPLATE = """
+  public static void main(String[] args) {{
+    {test_group_invoke}
+  }}
+"""
+
+  TEST_GROUP_INVOKE_TEMPLATE = """
+    {test_name}();
+"""
+
+  def __init__(self):
+    """
+    Initialize this MainClass
+    """
+    self.tests = set()
+    self.global_funcs = set()
+
+  def add_instance(self, it):
+    """
+    Add an instance test for the given class
+    """
+    self.tests.add(it)
+
+  def add_func(self, f):
+    """
+    Add a function to the class
+    """
+    self.global_funcs.add(f)
+
+  def get_name(self):
+    """
+    Get the name of this class
+    """
+    return "Main"
+
+  def __str__(self):
+    """
+    Print this class
+    """
+    all_tests = sorted(self.tests)
+    test_invoke = ""
+    test_groups = ""
+    for t in all_tests:
+      test_groups += str(t)
+    for t in sorted(all_tests):
+      test_invoke += self.TEST_GROUP_INVOKE_TEMPLATE.format(test_name=t.get_name())
+    main_func = self.MAIN_FUNCTION_TEMPLATE.format(test_group_invoke=test_invoke)
+
+    funcs = ""
+    for f in self.global_funcs:
+      funcs += str(f)
+    return self.MAIN_CLASS_TEMPLATE.format(copyright = get_copyright('java'),
+                                           test_groups=test_groups,
+                                           main_func=main_func, test_funcs=funcs)
+
+
+class InstanceTest(mixins.Named, mixins.NameComparableMixin):
+  """
+  A method that runs tests for a particular concrete type, It calls the test
+  cases for running it in all possible ways.
+  """
+
+  INSTANCE_TEST_TEMPLATE = """
+  public static void {test_name}() {{
+    System.out.println("Testing for type {ty}");
+    String s = "{ty}";
+    {ty} v = new {ty}();
+
+    {invokes}
+
+    System.out.println("End testing for type {ty}");
+  }}
+"""
+
+  TEST_INVOKE_TEMPLATE = """
+    {fname}(s, v);
+"""
+
+  def __init__(self, main, ty):
+    """
+    Initialize this test group for the given type
+    """
+    self.ty = ty
+    self.main = main
+    self.funcs = set()
+    self.main.add_instance(self)
+
+  def get_name(self):
+    """
+    Get the name of this test group
+    """
+    return "TEST_NAME_"+self.ty
+
+  def add_func(self, f):
+    """
+    Add a test function to this test group
+    """
+    self.main.add_func(f)
+    self.funcs.add(f)
+
+  def __str__(self):
+    """
+    Returns the java code for this function
+    """
+    func_invokes = ""
+    for f in sorted(self.funcs, key=lambda a: (a.func, a.farg)):
+      func_invokes += self.TEST_INVOKE_TEMPLATE.format(fname=f.get_name(),
+                                                       farg=f.farg)
+
+    return self.INSTANCE_TEST_TEMPLATE.format(test_name=self.get_name(), ty=self.ty,
+                                              invokes=func_invokes)
+
+class Func(mixins.Named, mixins.NameComparableMixin):
+  """
+  A single test case that attempts to invoke a function on receiver of a given type.
+  """
+
+  TEST_FUNCTION_TEMPLATE = """
+  public static void {fname}(String s, {farg} v) {{
+    try {{
+      System.out.printf("%s-{invoke_type:<9} {farg:>9}.{callfunc}()='%s'\\n", s, v.{callfunc}());
+      return;
+    }} catch (Error e) {{
+      System.out.printf("%s-{invoke_type} on {farg}: {callfunc}() threw exception!\\n", s);
+      e.printStackTrace(System.out);
+    }}
+  }}
+"""
+
+  def __init__(self, func, farg, invoke):
+    """
+    Initialize this test function for the given invoke type and argument
+    """
+    self.func = func
+    self.farg = farg
+    self.invoke = invoke
+
+  def get_name(self):
+    """
+    Get the name of this test
+    """
+    return "Test_Func_{}_{}_{}".format(self.func, self.farg, self.invoke)
+
+  def __str__(self):
+    """
+    Get the java code for this test function
+    """
+    return self.TEST_FUNCTION_TEMPLATE.format(fname=self.get_name(),
+                                              farg=self.farg,
+                                              invoke_type=self.invoke,
+                                              callfunc=self.func)
+
+def flatten_classes(classes, c):
+  """
+  Iterate over all the classes 'c' can be used as
+  """
+  while c:
+    yield c
+    c = classes.get(c.super_class)
+
+def flatten_class_methods(classes, c):
+  """
+  Iterate over all the methods 'c' can call
+  """
+  for c1 in flatten_classes(classes, c):
+    yield from c1.methods
+
+def flatten_interfaces(dat, c):
+  """
+  Iterate over all the interfaces 'c' transitively implements
+  """
+  def get_ifaces(cl):
+    for i2 in cl.implements:
+      yield dat.interfaces[i2]
+      yield from get_ifaces(dat.interfaces[i2])
+
+  for cl in flatten_classes(dat.classes, c):
+    yield from get_ifaces(cl)
+
+def flatten_interface_methods(dat, i):
+  """
+  Iterate over all the interface methods 'c' can call
+  """
+  yield from i.methods
+  for i2 in flatten_interfaces(dat, i):
+    yield from i2.methods
+
+def make_main_class(dat):
+  """
+  Creates a Main.java file that runs all the tests
+  """
+  m = MainClass()
+  for c in dat.classes.values():
+    i = InstanceTest(m, c.name)
+    for clazz in flatten_classes(dat.classes, c):
+      for meth in flatten_class_methods(dat.classes, clazz):
+        i.add_func(Func(meth, clazz.name, 'virtual'))
+      for iface in flatten_interfaces(dat, clazz):
+        for meth in flatten_interface_methods(dat, iface):
+          i.add_func(Func(meth, clazz.name, 'virtual'))
+          i.add_func(Func(meth, iface.name, 'interface'))
+  return m
+
+class TestData(namedtuple("TestData", ['classes', 'interfaces'])):
+  """
+  A class representing the classes.xml document.
+  """
+  pass
+
+class Clazz(namedtuple("Clazz", ["name", "methods", "super_class", "implements"])):
+  """
+  A class representing a class element in the classes.xml document.
+  """
+  pass
+
+class IFace(namedtuple("IFace", ["name", "methods", "super_class", "implements"])):
+  """
+  A class representing an interface element in the classes.xml document.
+  """
+  pass
+
+def parse_xml(xml):
+  """
+  Parse the xml description of this test.
+  """
+  classes = dict()
+  ifaces  = dict()
+  root = ET.fromstring(xml)
+  for iface in root.find("interfaces"):
+    name = iface.attrib['name']
+    implements = [a.text for a in iface.find("implements")]
+    methods = [a.text for a in iface.find("methods")]
+    ifaces[name] = IFace(name = name,
+                         super_class = iface.attrib['super'],
+                         methods = methods,
+                         implements = implements)
+  for clazz in root.find('classes'):
+    name = clazz.attrib['name']
+    implements = [a.text for a in clazz.find("implements")]
+    methods = [a.text for a in clazz.find("methods")]
+    classes[name] = Clazz(name = name,
+                          super_class = clazz.attrib['super'],
+                          methods = methods,
+                          implements = implements)
+  return TestData(classes, ifaces)
+
+def main(argv):
+  java_dir = Path(argv[1])
+  if not java_dir.exists() or not java_dir.is_dir():
+    print("{} is not a valid java dir".format(java_dir), file=sys.stderr)
+    sys.exit(1)
+  class_data = parse_xml((java_dir / "classes.xml").open().read())
+  make_main_class(class_data).dump(java_dir)
+
+if __name__ == '__main__':
+  main(sys.argv)