moved from mesa/shader to mesa/shader/grammar

1 files changed, 103 insertions, 0 deletions

diff --git a/src/mesa/shader/grammar/grammar.h b/src/mesa/shader/grammar/grammar.h
new file mode 100644
index 00000000000..591e38aefa6
--- /dev/null
+++ b/src/mesa/shader/grammar/grammar.h
@@ -0,0 +1,103 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.2
+ *
+ * Copyright (C) 1999-2004  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.
+ */
+
+#ifndef GRAMMAR_H
+#define GRAMMAR_H
+
+
+#ifndef GRAMMAR_PORT_INCLUDE
+#error Do not include this file directly, include your grammar_XXX.h instead
+#endif
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void grammar_alloc_free (void *);
+void *grammar_alloc_malloc (size_t);
+void *grammar_alloc_realloc (void *, size_t, size_t);
+void *grammar_memory_copy (void *, const void *, size_t);
+int grammar_string_compare (const byte *, const byte *);
+int grammar_string_compare_n (const byte *, const byte *, size_t);
+byte *grammar_string_copy (byte *, const byte *);
+byte *grammar_string_copy_n (byte *, const byte *, size_t);
+byte *grammar_string_duplicate (const byte *);
+unsigned int grammar_string_length (const byte *);
+
+/*
+    loads grammar script from null-terminated ASCII <text>
+    returns unique grammar id to grammar object
+    returns 0 if an error occurs (call grammar_get_last_error to retrieve the error text)
+*/
+grammar grammar_load_from_text (const byte *text);
+
+/*
+    sets a new <value> to a register <name> for grammar <id>
+    returns 0 on error (call grammar_get_last_error to retrieve the error text)
+    returns 1 on success
+*/
+int grammar_set_reg8 (grammar id, const byte *name, byte value);
+
+/*
+    this function is obsolete, use only for debugging purposes
+
+    checks if a null-terminated <text> matches given grammar <id>
+    returns 0 on error (call grammar_get_last_error to retrieve the error text)
+    returns 1 on success, the <prod> points to newly allocated buffer with production and <size>
+    is filled with the production size
+    call grammar_alloc_free to free the memory block pointed by <prod>
+*/
+int grammar_check (grammar id, const byte *text, byte **prod, unsigned int *size);
+
+/*
+    does the same what grammar_check does but much more (approx. 4 times) faster
+    use this function instead of grammar_check
+    <estimate_prod_size> is a hint - the initial production buffer size will be of this size,
+    but if more room is needed it will be safely resized; set it to 0x1000 or so
+*/
+int grammar_fast_check (grammar id, const byte *text, byte **prod, unsigned int *size,
+    unsigned int estimate_prod_size);
+
+/*
+    destroys grammar object identified by <id>
+    returns 0 on error (call grammar_get_last_error to retrieve the error text)
+    returns 1 on success
+*/
+int grammar_destroy (grammar id);
+
+/*
+    retrieves last grammar error reported either by grammar_load_from_text, grammar_check
+    or grammar_destroy
+    the user allocated <text> buffer receives error description, <pos> points to error position,
+    <size> is the size of the text buffer to fill in - it must be at least 4 bytes long,
+*/
+void grammar_get_last_error (byte *text, unsigned int size, int *pos);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+