[gtk+/wip/otte/shader: 28/55] gskslfunction: Split regular and builtin constructors

[Benjamin Otte <otte src gnome org>]

commit 2cb4308c5ebb2f1d31f3bfe1f3a0dda65de40f94
Author: Benjamin Otte <otte redhat com>
Date:   Fri Sep 29 19:33:59 2017 +0200

    gskslfunction: Split regular and builtin constructors
    
    Their behavior is just too different.

 gsk/gskslfunction.c |  152 +++++++++++++++++++++++++++++++++++----------------
 1 files changed, 104 insertions(+), 48 deletions(-)
---
diff --git a/gsk/gskslfunction.c b/gsk/gskslfunction.c
index b841579..624cf81 100644
--- a/gsk/gskslfunction.c
+++ b/gsk/gskslfunction.c
@@ -46,43 +46,43 @@ gsk_sl_function_alloc (const GskSlFunctionClass *klass,
 
 /* BUILTIN CONSTRUCTOR */
 
-typedef struct _GskSlFunctionConstructor GskSlFunctionConstructor;
+typedef struct _GskSlFunctionBuiltinConstructor GskSlFunctionBuiltinConstructor;
 
-struct _GskSlFunctionConstructor {
+struct _GskSlFunctionBuiltinConstructor {
   GskSlFunction parent;
 
   GskSlType *type;
 };
 
 static void
-gsk_sl_function_constructor_free (GskSlFunction *function)
+gsk_sl_function_builtin_constructor_free (GskSlFunction *function)
 {
-  GskSlFunctionConstructor *constructor = (GskSlFunctionConstructor *) function;
+  GskSlFunctionBuiltinConstructor *builtin_constructor = (GskSlFunctionBuiltinConstructor *) function;
 
-  gsk_sl_type_unref (constructor->type);
+  gsk_sl_type_unref (builtin_constructor->type);
 
-  g_slice_free (GskSlFunctionConstructor, constructor);
+  g_slice_free (GskSlFunctionBuiltinConstructor, builtin_constructor);
 }
 
 static GskSlType *
-gsk_sl_function_constructor_get_return_type (const GskSlFunction *function)
+gsk_sl_function_builtin_constructor_get_return_type (const GskSlFunction *function)
 {
-  const GskSlFunctionConstructor *constructor = (const GskSlFunctionConstructor *) function;
+  const GskSlFunctionBuiltinConstructor *builtin_constructor = (const GskSlFunctionBuiltinConstructor *) 
function;
 
-  return constructor->type;
+  return builtin_constructor->type;
 }
 
 static const char *
-gsk_sl_function_constructor_get_name (const GskSlFunction *function)
+gsk_sl_function_builtin_constructor_get_name (const GskSlFunction *function)
 {
-  const GskSlFunctionConstructor *constructor = (const GskSlFunctionConstructor *) function;
+  const GskSlFunctionBuiltinConstructor *builtin_constructor = (const GskSlFunctionBuiltinConstructor *) 
function;
 
-  return gsk_sl_type_get_name (constructor->type);
+  return gsk_sl_type_get_name (builtin_constructor->type);
 }
 
 static void
-gsk_sl_function_constructor_print (const GskSlFunction *function,
-                                   GString             *string)
+gsk_sl_function_builtin_constructor_print (const GskSlFunction *function,
+                                           GString             *string)
 {
 }
 
@@ -100,25 +100,25 @@ gsk_sl_function_builtin_get_args_by_type (const GskSlType *type)
 }
 
 static gboolean
-gsk_sl_function_constructor_matches_builtin (const GskSlFunction  *function,
+gsk_sl_function_builtin_constructor_matches (const GskSlFunction  *function,
                                              GskSlType           **arguments,
                                              gsize                 n_arguments,
                                              GError              **error)
 {
-  const GskSlFunctionConstructor *constructor = (const GskSlFunctionConstructor *) function;
+  const GskSlFunctionBuiltinConstructor *builtin_constructor = (const GskSlFunctionBuiltinConstructor *) 
function;
   guint needed, provided;
   gsize i;
 
   if (n_arguments == 1 && gsk_sl_type_is_scalar (arguments[0]))
     return TRUE;
 
-  needed = gsk_sl_function_builtin_get_args_by_type (constructor->type);
+  needed = gsk_sl_function_builtin_get_args_by_type (builtin_constructor->type);
 
   for (i = 0; i < n_arguments; i++)
     {
       if (needed == 0)
         {
-          g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED, "Too many arguments given to constructor, 
only the first %"G_GSIZE_FORMAT" are necessary.", i);
+          g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED, "Too many arguments given to 
builtin_constructor, only the first %"G_GSIZE_FORMAT" are necessary.", i);
           return FALSE;
         }
 
@@ -127,7 +127,7 @@ gsk_sl_function_constructor_matches_builtin (const GskSlFunction  *function,
         {
           g_set_error (error,
                        G_FILE_ERROR, G_FILE_ERROR_FAILED,
-                       "Invalid type %s for constructor in argument %"G_GSIZE_FORMAT,
+                       "Invalid type %s for builtin_constructor in argument %"G_GSIZE_FORMAT,
                        gsk_sl_type_get_name (arguments[i]), i + 1);
           return FALSE;
         }
@@ -138,11 +138,69 @@ gsk_sl_function_constructor_matches_builtin (const GskSlFunction  *function,
   return TRUE;
 }
 
+static guint32
+gsk_sl_function_builtin_constructor_write_spv (const GskSlFunction *function,
+                                               GskSpvWriter        *writer)
+{
+  return 0;
+}
+
+static const GskSlFunctionClass GSK_SL_FUNCTION_BUILTIN_CONSTRUCTOR = {
+  gsk_sl_function_builtin_constructor_free,
+  gsk_sl_function_builtin_constructor_get_return_type,
+  gsk_sl_function_builtin_constructor_get_name,
+  gsk_sl_function_builtin_constructor_print,
+  gsk_sl_function_builtin_constructor_matches,
+  gsk_sl_function_builtin_constructor_write_spv,
+};
+
+/* CONSTRUCTOR */
+
+typedef struct _GskSlFunctionConstructor GskSlFunctionConstructor;
+
+struct _GskSlFunctionConstructor {
+  GskSlFunction parent;
+
+  GskSlType *type;
+};
+
+static void
+gsk_sl_function_constructor_free (GskSlFunction *function)
+{
+  GskSlFunctionConstructor *constructor = (GskSlFunctionConstructor *) function;
+
+  gsk_sl_type_unref (constructor->type);
+
+  g_slice_free (GskSlFunctionConstructor, constructor);
+}
+
+static GskSlType *
+gsk_sl_function_constructor_get_return_type (const GskSlFunction *function)
+{
+  const GskSlFunctionConstructor *constructor = (const GskSlFunctionConstructor *) function;
+
+  return constructor->type;
+}
+
+static const char *
+gsk_sl_function_constructor_get_name (const GskSlFunction *function)
+{
+  const GskSlFunctionConstructor *constructor = (const GskSlFunctionConstructor *) function;
+
+  return gsk_sl_type_get_name (constructor->type);
+}
+
+static void
+gsk_sl_function_constructor_print (const GskSlFunction *function,
+                                   GString             *string)
+{
+}
+
 static gboolean
-gsk_sl_function_constructor_matches_struct (const GskSlFunction  *function,
-                                            GskSlType           **arguments,
-                                            gsize                 n_arguments,
-                                            GError              **error)
+gsk_sl_function_constructor_matches (const GskSlFunction  *function,
+                                     GskSlType           **arguments,
+                                     gsize                 n_arguments,
+                                     GError              **error)
 {
   const GskSlFunctionConstructor *constructor = (const GskSlFunctionConstructor *) function;
   guint i;
@@ -175,27 +233,6 @@ gsk_sl_function_constructor_matches_struct (const GskSlFunction  *function,
   return TRUE;
 }
 
-static gboolean
-gsk_sl_function_constructor_matches (const GskSlFunction  *function,
-                                     GskSlType           **arguments,
-                                     gsize                 n_arguments,
-                                     GError              **error)
-{
-  const GskSlFunctionConstructor *constructor = (const GskSlFunctionConstructor *) function;
-
-  if (gsk_sl_type_is_scalar (constructor->type) ||
-      gsk_sl_type_is_vector (constructor->type) ||
-      gsk_sl_type_is_matrix (constructor->type))
-    return gsk_sl_function_constructor_matches_builtin (function, arguments, n_arguments, error);
-  else if (gsk_sl_type_is_struct (constructor->type))
-    return gsk_sl_function_constructor_matches_struct (function, arguments, n_arguments, error);
-  else
-    {
-      g_assert_not_reached ();
-    }
-
-}
-
 static guint32
 gsk_sl_function_constructor_write_spv (const GskSlFunction *function,
                                        GskSpvWriter        *writer)
@@ -394,13 +431,32 @@ static const GskSlFunctionClass GSK_SL_FUNCTION_DECLARED = {
 GskSlFunction *
 gsk_sl_function_new_constructor (GskSlType *type)
 {
-  GskSlFunctionConstructor *constructor;
+  if (gsk_sl_type_is_scalar (type) ||
+      gsk_sl_type_is_vector (type) ||
+      gsk_sl_type_is_matrix (type))
+    {
+      GskSlFunctionBuiltinConstructor *constructor;
+
+      constructor = gsk_sl_function_new (GskSlFunctionBuiltinConstructor, 
&GSK_SL_FUNCTION_BUILTIN_CONSTRUCTOR);
+      constructor->type = gsk_sl_type_ref (type);
 
-  constructor = gsk_sl_function_new (GskSlFunctionConstructor, &GSK_SL_FUNCTION_CONSTRUCTOR);
+      return &constructor->parent;
+    }
+  else if (gsk_sl_type_is_struct (type))
+    {
+      GskSlFunctionConstructor *constructor;
 
-  constructor->type = gsk_sl_type_ref (type);
+      constructor = gsk_sl_function_new (GskSlFunctionConstructor, &GSK_SL_FUNCTION_CONSTRUCTOR);
+      constructor->type = gsk_sl_type_ref (type);
 
-  return &constructor->parent;
+      return &constructor->parent;
+    }
+  else
+    {
+      g_assert_not_reached ();
+
+      return NULL;
+    }
 }
 
 GskSlFunction *