Add stub ir_reader and new 'i' mode for reading IR rather than GLSL.

Makefile.am

@@ -37,7 +37,7 @@ glsl_SOURCES = \
 	ir_function_can_inline.cpp \
 	ir_function_inlining.cpp \
 	ir_if_simplification.cpp \
-	s_expression.cpp
+	ir_reader.cpp s_expression.cpp
 
 BUILT_SOURCES = glsl_parser.h glsl_parser.cpp glsl_lexer.cpp
 CLEANFILES = $(BUILT_SOURCES)

glsl_parser_extras.cpp

@@ -39,6 +39,7 @@
 #include "ir_function_inlining.h"
 #include "ir_if_simplification.h"
 #include "ir_print_visitor.h"
+#include "ir_reader.h"
 
 const char *
 _mesa_glsl_shader_target_name(enum _mesa_glsl_parser_targets target)
@@ -715,7 +716,7 @@ main(int argc, char **argv)
    exec_list instructions;
 
    if (argc < 3) {
-      printf("Usage: %s [v|g|f] <shader_file>\n", argv[0]);
+      printf("Usage: %s [v|g|f|i] <shader_file>\n", argv[0]);
       return EXIT_FAILURE;
    }
 
@@ -731,8 +732,11 @@ main(int argc, char **argv)
    case 'f':
       state.target = fragment_shader;
       break;
+   case 'i':
+      state.target = ir_shader;
+      break;
    default:
-      printf("Usage: %s [v|g|f] <shader_file>\n", argv[0]);
+      printf("Usage: %s [v|g|f|i] <shader_file>\n", argv[0]);
       return EXIT_FAILURE;
    }
 
@@ -746,16 +750,20 @@ main(int argc, char **argv)
    state.loop_or_switch_nesting = NULL;
    state.ARB_texture_rectangle_enable = true;
 
-   _mesa_glsl_lexer_ctor(& state, shader, shader_len);
-   _mesa_glsl_parse(& state);
-   _mesa_glsl_lexer_dtor(& state);
+   if (state.target != ir_shader) {
+      _mesa_glsl_lexer_ctor(& state, shader, shader_len);
+      _mesa_glsl_parse(& state);
+      _mesa_glsl_lexer_dtor(& state);
 
-   foreach (ptr, & state.translation_unit) {
-      ((ast_node *)ptr)->print();
+      foreach (ptr, & state.translation_unit) {
+	 ((ast_node *)ptr)->print();
+      }
+
+      _mesa_ast_to_hir(&instructions, &state);
+   } else {
+      _mesa_glsl_read_ir(&state, &instructions, shader);
    }
 
-   _mesa_ast_to_hir(&instructions, &state);
-
    /* Optimization passes */
    if (!state.error) {
       bool progress;

glsl_parser_extras.h

@@ -32,7 +32,8 @@
 enum _mesa_glsl_parser_targets {
    vertex_shader,
    geometry_shader,
-   fragment_shader
+   fragment_shader,
+   ir_shader
 };
 
 struct _mesa_glsl_parse_state {

ir_reader.cpp

@@ -0,0 +1,47 @@
+/*
+ * Copyright © 2010 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+#include <cstdio>
+#include <cstdarg>
+#include "ir_reader.h"
+#include "glsl_parser_extras.h"
+#include "glsl_types.h"
+#include "s_expression.h"
+
+void
+_mesa_glsl_read_ir(_mesa_glsl_parse_state *state, exec_list *instructions,
+		   const char *src)
+{
+   s_expression *expr = s_expression::read_expression(src);
+   if (expr == NULL) {
+      printf("couldn't parse S-Expression.");
+      state->error = true;
+      return;
+   }
+   printf("S-Expression:\n");
+   expr->print();
+   printf("\n");
+   
+   // FINISHME: actually read the IR.
+   state->error = true;
+}
+

ir_reader.h

@@ -0,0 +1,34 @@
+/* -*- c++ -*- */
+/*
+ * Copyright © 2010 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#pragma once
+#ifndef IR_READER_H
+#define IR_READER_H
+
+#include "ir.h"
+
+void _mesa_glsl_read_ir(_mesa_glsl_parse_state *state, exec_list *instructions,
+			const char *src);
+
+#endif /* IR_READER_H */