Generate Pepper IDL for OpenGLES2

Previously, we were directly generating header files for
OpenGLES2 interface. This is not aligned with other Pepper
APIs. The header file generated from the generated IDL file
should be compatible with the previous one. To keep OpenGLES2
interfaces in struct namespace, this change introduces
"force_struct_namespace" attribute to the generator script.

TEST=trybots
BUG=411799

Review URL: https://codereview.chromium.org/538903002

Cr-Commit-Position: refs/heads/master@{#293904}

1 files changed, 33 insertions, 9 deletions

diff --git a/ppapi/generators/idl_c_proto.py b/ppapi/generators/idl_c_proto.py
index d029f93..bc569ad 100755
--- a/ppapi/generators/idl_c_proto.py
+++ b/ppapi/generators/idl_c_proto.py
@@ -174,6 +174,21 @@ class CGen(object):
   'interface_t' : 'const void*'
   }
 
+  # Tell how to handle pointers to GL types.
+  for gltype in ['GLbitfield', 'GLboolean', 'GLbyte', 'GLclampf',
+                 'GLclampx', 'GLenum', 'GLfixed', 'GLfloat', 'GLint',
+                 'GLintptr', 'GLshort', 'GLsizei', 'GLsizeiptr',
+                 'GLubyte', 'GLuint', 'GLushort']:
+    ptrtype = gltype + '_ptr_t'
+    TypeMap[ptrtype] = {
+      'in': 'const %s',
+      'inout': '%s',
+      'out': '%s',
+      'return': 'const %s',
+      'store': '%s'
+    }
+    RemapName[ptrtype] = '%s*' % gltype
+
   def __init__(self):
     self.dbg_depth = 0
 
@@ -571,6 +586,22 @@ class CGen(object):
     return out
 
 
+  def DefineUnversionedInterface(self, node, rel):
+    out = '\n'
+    if node.GetProperty('force_struct_namespace'):
+      # Duplicate the definition to put it in struct namespace. This
+      # attribute is only for legacy APIs like OpenGLES2 and new APIs
+      # must not use this. See http://crbug.com/411799
+      out += self.DefineStructInternals(node, rel,
+                                        include_version=False, comment=True)
+    else:
+      # Define an unversioned typedef for the most recent version
+      out += 'typedef struct %s %s;\n' % (
+        self.GetStructName(node, rel, include_version=True),
+        self.GetStructName(node, rel, include_version=False))
+    return out
+
+
   def DefineStruct(self, node, releases, prefix='', comment=False):
     __pychecker__ = 'unusednames=comment,prefix'
     self.LogEnter('DefineStruct %s' % node)
@@ -601,10 +632,7 @@ class CGen(object):
       out = self.DefineStructInternals(node, last_rel,
                                        include_version=True, comment=True)
       if last_rel == newest_stable:
-        # Define an unversioned typedef for the most recent version
-        out += '\ntypedef struct %s %s;\n' % (
-            self.GetStructName(node, last_rel, include_version=True),
-            self.GetStructName(node, last_rel, include_version=False))
+        out += self.DefineUnversionedInterface(node, last_rel)
 
       # Build the rest without comments and with the version number appended
       for rel in build_list[0:-1]:
@@ -619,10 +647,7 @@ class CGen(object):
                                                  include_version=True,
                                                  comment=False)
         if rel == newest_stable:
-          # Define an unversioned typedef for the most recent version
-          out += '\ntypedef struct %s %s;\n' % (
-              self.GetStructName(node, rel, include_version=True),
-              self.GetStructName(node, rel, include_version=False))
+          out += self.DefineUnversionedInterface(node, rel)
 
     self.LogExit('Exit DefineStruct')
     return out
@@ -790,4 +815,3 @@ def main(args):
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))
-