Add a Pepper IDL generator to the JSON schema compiler.

tools/json_schema_compiler/templates/ppapi/idl.template

Index: tools/json_schema_compiler/templates/ppapi/idl.template
diff --git a/tools/json_schema_compiler/templates/ppapi/idl.template b/tools/json_schema_compiler/templates/ppapi/idl.template
new file mode 100644
index 0000000000000000000000000000000000000000..13aa6bb34af900f6dfb815dd7144bf20ce0ea796
--- /dev/null
+++ b/tools/json_schema_compiler/templates/ppapi/idl.template
@@ -0,0 +1,100 @@
+{# Copyright 2013 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. -#}
+
+{% extends "base.template" %}
+
+{% macro optional_array_struct(type) %}
+{%- if type | needs_optional_array %}
+struct {{ type | ppapi_type(array=True, optional=True) }} {
+  {{ type | ppapi_type(array=True) }} value;
+  PP_Bool is_set;
+};
+{% endif -%}
+{% endmacro %}
+
+{% macro array_struct(type) %}
+{%- if type | needs_array %}
+struct {{ type | ppapi_type(array=True) }} {
+  uint32_t size;
+  [size_is(size)] {{ type | ppapi_type }}[] elements;
+};
+{% endif -%}
+{% endmacro %}
+
+{% macro optional_struct(type) %}
+{%- if type | needs_optional %}
+struct {{ type | ppapi_type(optional=True) }} {
+  {{ type | ppapi_type }} value;
+  PP_Bool is_set;
+};
+{% endif -%}
+{% endmacro %}
+
+{% block content -%}
+label Chrome {
+  M33 = 0.1

[yzshen1, 2013/12/10 21:43:02]

[no need to make change right now]
The version information we probably need to define manually somewhere, maybe in
the apps IDL.

[Sam McNally, 2013/12/11 08:02:38]

Added a TODO.

+};
+{% for type in enums %}
+enum {{ type | ppapi_type }} {
+  {%- for value in type.enum_values %}
+  {{ value | enum_value(type) }}{% if not loop.last %},{% endif %}
+  {%- endfor %}
+};
+{{ optional_struct(type) -}}
+{{ array_struct(type) -}}
+{{ optional_array_struct(type) -}}
+{%- endfor %}
+{%- for type in types %}
+struct {{ type | ppapi_type }} {
+  {%- for member in type.properties.itervalues() %}
+  {{ member | format_param_type }} {{ member.unix_name}};
+  {%- endfor %}
+};
+{{ optional_struct(type) -}}
+{{ array_struct(type) -}}
+{{ optional_array_struct(type) -}}
+{% endfor %}
+{%- for event in events.itervalues() %}
+typedef uint32_t {{ event | ppapi_type }}(

[yzshen1, 2013/12/10 21:43:02]

Event callback will return void.

[Sam McNally, 2013/12/11 08:02:38]

Done.

+    [in] uint32_t listener_id,
+    [inout] mem_t user_data{% if event.params %},{% endif %}
+    {%- for param in event.params %}
+    [inout] {{ param | format_param_type }} {{ param.unix_name }}

[yzshen1, 2013/12/10 21:43:02]

I think other params are all [in].

[Sam McNally, 2013/12/11 08:02:38]

Done.

+    {%- if not loop.last %},{% endif %}
+    {%- endfor -%}
+);
+{% endfor %}
+interface PPB_{{ name | classname | dev_suffix }} {
+{% for function in functions.itervalues() %}
+  {{ function | return_type }} {{ function.name | classname }}(
+      [in] PP_Instance instance
+      {%- if function.params or function.callback or function.returns %},
+      {%- endif %}
+      {%- for param in function.params %}
+      [in] {{ param | format_param_type }} {{ param.unix_name }}
+      {%- if not loop.last or function.callback or function.returns %},
+      {%- endif %}
+      {%- endfor -%}
+      {%- if function.returns %}
+      [out] {{ function.returns | ppapi_type }} result,
+      {%- endif %}
+      {%- for param in function.callback.params %}
+      [out] {{ param | format_param_type }} {{ param.unix_name }},
+      {%- endfor %}
+      {%- if function.callback or function.returns %}
+      {%- if function | has_array_outs %}
+      [in] PP_ArrayOutput array_allocator,
+      {%- endif %}
+      [in] PP_CompletionCallback callback
+      {%- endif -%}
+      );
+{% endfor -%}
+{% for event in events.itervalues() %}
+  uint32_t Add{{ event.name | classname }}Listener (
+      [in] PP_Instance instance,
+      [in] {{ event | ppapi_type }} callback,
+      [inout] mem_t user_data);
+{% endfor %}
+};
+{% endblock %}