slang preprocessor

src/mesa/shader/slang/slang_preprocess.c

@@ -0,0 +1,81 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.3
+ *
+ * Copyright (C) 2005  Brian Paul   All Rights Reserved.
+ *
+ * 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 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
+ * BRIAN PAUL 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.
+ */
+
+/**
+ * \file slang_preprocess.c
+ * slang preprocessor
+ * \author Michal Krol
+ */
+
+#include "imports.h" 
+#include "slang_compile.h"
+#include "grammar_mesa.h"
+#include "slang_preprocess.h"
+
+static const char *slang_version_syn =
+#include "library/slang_version_syn.h"
+;
+
+int _slang_preprocess_version (const char *text, unsigned int *version, unsigned int *eaten,
+	slang_info_log *log)
+{
+	grammar id;
+	byte *prod, *I;
+	unsigned int size;
+
+	id = grammar_load_from_text ((const byte *) slang_version_syn);
+	if (id == 0)
+	{
+		char buf[1024];
+		unsigned int pos;
+		grammar_get_last_error (buf, 1024, &pos);
+		slang_info_log_error (log, buf);
+		return 0;
+	}
+
+	if (!grammar_fast_check (id, (const byte *) text, &prod, &size, 8))
+	{
+		char buf[1024];
+		unsigned int pos;
+		grammar_get_last_error (buf, 1024, &pos);
+		slang_info_log_error (log, buf);
+		grammar_destroy (id);
+		return 0;
+	}
+
+	grammar_destroy (id);
+
+	I = prod;
+	while (I < prod + size)
+	{
+		*version = (unsigned int) I[0] + (unsigned int) I[1] * 100;
+		*eaten = (unsigned int) I[2] + ((unsigned int) I[3] << 8) +
+			((unsigned int) I[4] << 16) + ((unsigned int) I[5] << 24);
+		I += 6;
+	}
+
+	grammar_alloc_free (prod);
+	return 1;
+}
+

src/mesa/shader/slang/slang_preprocess.h

@@ -0,0 +1,39 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.3
+ *
+ * Copyright (C) 2005  Brian Paul   All Rights Reserved.
+ *
+ * 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 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
+ * BRIAN PAUL 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.
+ */
+
+#if !defined SLANG_PREPROCESS_H
+#define SLANG_PREPROCESS_H
+
+#if defined __cplusplus
+extern "C" {
+#endif
+
+int _slang_preprocess_version (const char *, unsigned int *, unsigned int *, slang_info_log *);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+