Remove the dependency on json schema compiler.

tools/json_schema_compiler/h_generator.py

Index: tools/json_schema_compiler/h_generator.py
diff --git a/tools/json_schema_compiler/h_generator.py b/tools/json_schema_compiler/h_generator.py
deleted file mode 100644
index a6d67db2cc78657a933ee1c9140ef219304b5f35..0000000000000000000000000000000000000000
--- a/tools/json_schema_compiler/h_generator.py
+++ /dev/null
@@ -1,397 +0,0 @@
-# Copyright (c) 2012 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-import os
-
-from code import Code
-from model import PropertyType
-import cpp_util
-import schema_util
-
-class HGenerator(object):
-  def __init__(self, type_generator):
-    self._type_generator = type_generator
-
-  def Generate(self, namespace):
-    return _Generator(namespace, self._type_generator).Generate()
-
-
-class _Generator(object):
-  """A .h generator for a namespace.
-  """
-  def __init__(self, namespace, cpp_type_generator):
-    self._namespace = namespace
-    self._type_helper = cpp_type_generator
-    self._generate_error_messages = namespace.compiler_options.get(
-        'generate_error_messages', False)
-
-  def Generate(self):
-    """Generates a Code object with the .h for a single namespace.
-    """
-    c = Code()
-    (c.Append(cpp_util.CHROMIUM_LICENSE)
-      .Append()
-      .Append(cpp_util.GENERATED_FILE_MESSAGE % self._namespace.source_file)
-      .Append()
-    )
-
-    # Hack: for the purpose of gyp the header file will always be the source
-    # file with its file extension replaced by '.h'. Assume so.
-    output_file = os.path.splitext(self._namespace.source_file)[0] + '.h'
-    ifndef_name = cpp_util.GenerateIfndefName(output_file)
-
-    (c.Append('#ifndef %s' % ifndef_name)
-      .Append('#define %s' % ifndef_name)
-      .Append()
-      .Append('#include <map>')
-      .Append('#include <string>')
-      .Append('#include <vector>')
-      .Append()
-      .Append('#include "base/basictypes.h"')
-      .Append('#include "base/logging.h"')
-      .Append('#include "base/memory/linked_ptr.h"')
-      .Append('#include "base/memory/scoped_ptr.h"')
-      .Append('#include "base/values.h"')
-      .Cblock(self._type_helper.GenerateIncludes())
-      .Append()
-    )
-
-    # TODO(calamity): These forward declarations should be #includes to allow
-    # $ref types from other files to be used as required params. This requires
-    # some detangling of windows and tabs which will currently lead to circular
-    # #includes.
-    c.Cblock(self._type_helper.GenerateForwardDeclarations())
-
-    cpp_namespace = cpp_util.GetCppNamespace(
-        self._namespace.environment.namespace_pattern,
-        self._namespace.unix_name)
-    c.Concat(cpp_util.OpenNamespace(cpp_namespace))
-    c.Append()
-    if self._namespace.properties:
-      (c.Append('//')
-        .Append('// Properties')
-        .Append('//')
-        .Append()
-      )
-      for property in self._namespace.properties.values():
-        property_code = self._type_helper.GeneratePropertyValues(
-            property,
-            'extern const %(type)s %(name)s;')
-        if property_code:
-          c.Cblock(property_code)
-    if self._namespace.types:
-      (c.Append('//')
-        .Append('// Types')
-        .Append('//')
-        .Append()
-        .Cblock(self._GenerateTypes(self._FieldDependencyOrder(),
-                                    is_toplevel=True,
-                                    generate_typedefs=True))
-      )
-    if self._namespace.functions:
-      (c.Append('//')
-        .Append('// Functions')
-        .Append('//')
-        .Append()
-      )
-      for function in self._namespace.functions.values():
-        c.Cblock(self._GenerateFunction(function))
-    if self._namespace.events:
-      (c.Append('//')
-        .Append('// Events')
-        .Append('//')
-        .Append()
-      )
-      for event in self._namespace.events.values():
-        c.Cblock(self._GenerateEvent(event))
-    (c.Concat(cpp_util.CloseNamespace(cpp_namespace))
-      .Append('#endif  // %s' % ifndef_name)
-      .Append()
-    )
-    return c
-
-  def _FieldDependencyOrder(self):
-    """Generates the list of types in the current namespace in an order in which
-    depended-upon types appear before types which depend on them.
-    """
-    dependency_order = []
-
-    def ExpandType(path, type_):
-      if type_ in path:
-        raise ValueError("Illegal circular dependency via cycle " +
-                         ", ".join(map(lambda x: x.name, path + [type_])))
-      for prop in type_.properties.values():
-        if (prop.type_ == PropertyType.REF and
-            schema_util.GetNamespace(prop.ref_type) == self._namespace.name):
-          ExpandType(path + [type_], self._namespace.types[prop.ref_type])
-      if not type_ in dependency_order:
-        dependency_order.append(type_)
-
-    for type_ in self._namespace.types.values():
-      ExpandType([], type_)
-    return dependency_order
-
-  def _GenerateEnumDeclaration(self, enum_name, type_):
-    """Generate a code object with the  declaration of a C++ enum.
-    """
-    c = Code()
-    c.Sblock('enum %s {' % enum_name)
-    c.Append(self._type_helper.GetEnumNoneValue(type_) + ',')
-    for value in type_.enum_values:
-      current_enum_string = self._type_helper.GetEnumValue(type_, value)
-      c.Append(current_enum_string + ',')
-    c.Append('%s = %s,' % (
-        self._type_helper.GetEnumLastValue(type_), current_enum_string))
-    c.Eblock('};')
-    return c
-
-  def _GenerateFields(self, props):
-    """Generates the field declarations when declaring a type.
-    """
-    c = Code()
-    needs_blank_line = False
-    for prop in props:
-      if needs_blank_line:
-        c.Append()
-      needs_blank_line = True
-      if prop.description:
-        c.Comment(prop.description)
-      # ANY is a base::Value which is abstract and cannot be a direct member, so
-      # we always need to wrap it in a scoped_ptr.
-      is_ptr = prop.optional or prop.type_.property_type == PropertyType.ANY
-      (c.Append('%s %s;' % (
-           self._type_helper.GetCppType(prop.type_, is_ptr=is_ptr),
-           prop.unix_name))
-      )
-    return c
-
-  def _GenerateType(self, type_, is_toplevel=False, generate_typedefs=False):
-    """Generates a struct for |type_|.
-
-    |is_toplevel|       implies that the type was declared in the "types" field
-                        of an API schema. This determines the correct function
-                        modifier(s).
-    |generate_typedefs| controls whether primitive types should be generated as
-                        a typedef. This may not always be desired. If false,
-                        primitive types are ignored.
-    """
-    classname = cpp_util.Classname(schema_util.StripNamespace(type_.name))
-    c = Code()
-
-    if type_.functions:
-      # Wrap functions within types in the type's namespace.
-      (c.Append('namespace %s {' % classname)
-        .Append()
-      )
-      for function in type_.functions.values():
-        c.Cblock(self._GenerateFunction(function))
-      c.Append('}  // namespace %s' % classname)
-    elif type_.property_type == PropertyType.ARRAY:
-      if generate_typedefs and type_.description:
-        c.Comment(type_.description)
-      c.Cblock(self._GenerateType(type_.item_type))
-      if generate_typedefs:
-        (c.Append('typedef std::vector<%s > %s;' % (
-                       self._type_helper.GetCppType(type_.item_type),
-                       classname))
-        )
-    elif type_.property_type == PropertyType.STRING:
-      if generate_typedefs:
-        if type_.description:
-          c.Comment(type_.description)
-        c.Append('typedef std::string %(classname)s;')
-    elif type_.property_type == PropertyType.ENUM:
-      if type_.description:
-        c.Comment(type_.description)
-      c.Cblock(self._GenerateEnumDeclaration(classname, type_));
-      # Top level enums are in a namespace scope so the methods shouldn't be
-      # static. On the other hand, those declared inline (e.g. in an object) do.
-      maybe_static = '' if is_toplevel else 'static '
-      (c.Append()
-        .Append('%sstd::string ToString(%s as_enum);' %
-                (maybe_static, classname))
-        .Append('%s%s Parse%s(const std::string& as_string);' %
-                (maybe_static, classname, classname))
-      )
-    elif type_.property_type in (PropertyType.CHOICES,
-                                 PropertyType.OBJECT):
-      if type_.description:
-        c.Comment(type_.description)
-      (c.Sblock('struct %(classname)s {')
-          .Append('%(classname)s();')
-          .Append('~%(classname)s();')
-      )
-      if type_.origin.from_json:
-        (c.Append()
-          .Comment('Populates a %s object from a base::Value. Returns'
-                   ' whether |out| was successfully populated.' % classname)
-          .Append('static bool Populate(%s);' % self._GenerateParams(
-              ('const base::Value& value', '%s* out' % classname)))
-        )
-        if is_toplevel:
-          (c.Append()
-            .Comment('Creates a %s object from a base::Value, or NULL on '
-                     'failure.' % classname)
-            .Append('static scoped_ptr<%s> FromValue(%s);' % (
-                classname, self._GenerateParams(('const base::Value& value',))))
-          )
-      if type_.origin.from_client:
-        value_type = ('base::Value'
-                      if type_.property_type is PropertyType.CHOICES else
-                      'base::DictionaryValue')
-        (c.Append()
-          .Comment('Returns a new %s representing the serialized form of this '
-                   '%s object.' % (value_type, classname))
-          .Append('scoped_ptr<%s> ToValue() const;' % value_type)
-        )
-      if type_.property_type == PropertyType.CHOICES:
-        # Choices are modelled with optional fields for each choice. Exactly one
-        # field of the choice is guaranteed to be set by the compiler.
-        c.Cblock(self._GenerateTypes(type_.choices))
-        c.Append('// Choices:')
-        for choice_type in type_.choices:
-          c.Append('%s as_%s;' % (
-              self._type_helper.GetCppType(choice_type, is_ptr=True),
-              choice_type.unix_name))
-      else:
-        properties = type_.properties.values()
-        (c.Append()
-          .Cblock(self._GenerateTypes(p.type_ for p in properties))
-          .Cblock(self._GenerateFields(properties)))
-        if type_.additional_properties is not None:
-          # Most additionalProperties actually have type "any", which is better
-          # modelled as a DictionaryValue rather than a map of string -> Value.
-          if type_.additional_properties.property_type == PropertyType.ANY:
-            c.Append('base::DictionaryValue additional_properties;')
-          else:
-            (c.Cblock(self._GenerateType(type_.additional_properties))
-              .Append('std::map<std::string, %s> additional_properties;' %
-                  cpp_util.PadForGenerics(
-                      self._type_helper.GetCppType(type_.additional_properties,
-                                                   is_in_container=True)))
-            )
-      (c.Eblock()
-        .Append()
-        .Sblock(' private:')
-          .Append('DISALLOW_COPY_AND_ASSIGN(%(classname)s);')
-        .Eblock('};')
-      )
-    return c.Substitute({'classname': classname})
-
-  def _GenerateEvent(self, event):
-    """Generates the namespaces for an event.
-    """
-    c = Code()
-    # TODO(kalman): use event.unix_name not Classname.
-    event_namespace = cpp_util.Classname(event.name)
-    (c.Append('namespace %s {' % event_namespace)
-      .Append()
-      .Concat(self._GenerateEventNameConstant(event))
-      .Concat(self._GenerateCreateCallbackArguments(event))
-      .Eblock('}  // namespace %s' % event_namespace)
-    )
-    return c
-
-  def _GenerateFunction(self, function):
-    """Generates the namespaces and structs for a function.
-    """
-    c = Code()
-    # TODO(kalman): Use function.unix_name not Classname here.
-    function_namespace = cpp_util.Classname(function.name)
-    # Windows has a #define for SendMessage, so to avoid any issues, we need
-    # to not use the name.
-    if function_namespace == 'SendMessage':
-      function_namespace = 'PassMessage'
-    (c.Append('namespace %s {' % function_namespace)
-      .Append()
-      .Cblock(self._GenerateFunctionParams(function))
-    )
-    if function.callback:
-      c.Cblock(self._GenerateFunctionResults(function.callback))
-    c.Append('}  // namespace %s' % function_namespace)
-    return c
-
-  def _GenerateFunctionParams(self, function):
-    """Generates the struct for passing parameters from JSON to a function.
-    """
-    if not function.params:
-      return Code()
-
-    c = Code()
-    (c.Sblock('struct Params {')
-      .Append('static scoped_ptr<Params> Create(%s);' % self._GenerateParams(
-          ('const base::ListValue& args',)))
-      .Append('~Params();')
-      .Append()
-      .Cblock(self._GenerateTypes(p.type_ for p in function.params))
-      .Cblock(self._GenerateFields(function.params))
-      .Eblock()
-      .Append()
-      .Sblock(' private:')
-        .Append('Params();')
-        .Append()
-        .Append('DISALLOW_COPY_AND_ASSIGN(Params);')
-      .Eblock('};')
-    )
-    return c
-
-  def _GenerateTypes(self, types, is_toplevel=False, generate_typedefs=False):
-    """Generate the structures required by a property such as OBJECT classes
-    and enums.
-    """
-    c = Code()
-    for type_ in types:
-      c.Cblock(self._GenerateType(type_,
-                                  is_toplevel=is_toplevel,
-                                  generate_typedefs=generate_typedefs))
-    return c
-
-  def _GenerateCreateCallbackArguments(self, function):
-    """Generates functions for passing parameters to a callback.
-    """
-    c = Code()
-    params = function.params
-    c.Cblock(self._GenerateTypes((p.type_ for p in params), is_toplevel=True))
-
-    declaration_list = []
-    for param in params:
-      if param.description:
-        c.Comment(param.description)
-      declaration_list.append(cpp_util.GetParameterDeclaration(
-          param, self._type_helper.GetCppType(param.type_)))
-    c.Append('scoped_ptr<base::ListValue> Create(%s);' %
-             ', '.join(declaration_list))
-    return c
-
-  def _GenerateEventNameConstant(self, event):
-    """Generates a constant string array for the event name.
-    """
-    c = Code()
-    c.Append('extern const char kEventName[];  // "%s.%s"' % (
-                 self._namespace.name, event.name))
-    c.Append()
-    return c
-
-  def _GenerateFunctionResults(self, callback):
-    """Generates namespace for passing a function's result back.
-    """
-    c = Code()
-    (c.Append('namespace Results {')
-      .Append()
-      .Concat(self._GenerateCreateCallbackArguments(callback))
-      .Append('}  // namespace Results')
-    )
-    return c
-
-  def _GenerateParams(self, params):
-    """Builds the parameter list for a function, given an array of parameters.
-    """
-    # |error| is populated with warnings and/or errors found during parsing.
-    # |error| being set does not necessarily imply failure and may be
-    # recoverable.
-    # For example, optional properties may have failed to parse, but the
-    # parser was able to continue.
-    if self._generate_error_messages:
-      params += ('base::string16* error',)
-    return ', '.join(str(p) for p in params)