svn merge -r524:HEAD "^/branches/released" .

1 files changed, 328 insertions, 0 deletions

diff --git a/mesalib/src/glsl/pp/sl_pp_process.c b/mesalib/src/glsl/pp/sl_pp_process.c
new file mode 100644
index 000000000..315ad9bf1
--- /dev/null
+++ b/mesalib/src/glsl/pp/sl_pp_process.c
@@ -0,0 +1,328 @@
+/**************************************************************************
+ * 
+ * Copyright 2009 VMware, Inc.
+ * 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, sub license, 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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 <stdlib.h>
+#include <string.h>
+#include "sl_pp_context.h"
+#include "sl_pp_process.h"
+#include "sl_pp_public.h"
+
+
+int
+sl_pp_process_out(struct sl_pp_process_state *state,
+                  const struct sl_pp_token_info *token)
+{
+   if (state->out_len >= state->out_max) {
+      unsigned int new_max = state->out_max;
+
+      if (new_max < 0x100) {
+         new_max = 0x100;
+      } else if (new_max < 0x10000) {
+         new_max *= 2;
+      } else {
+         new_max += 0x10000;
+      }
+
+      state->out = realloc(state->out, new_max * sizeof(struct sl_pp_token_info));
+      if (!state->out) {
+         return -1;
+      }
+      state->out_max = new_max;
+   }
+
+   state->out[state->out_len++] = *token;
+   return 0;
+}
+
+int
+sl_pp_process_get(struct sl_pp_context *context,
+                  struct sl_pp_token_info *output)
+{
+   if (!context->process_state.out) {
+      if (context->line > 1) {
+         struct sl_pp_token_info ti;
+
+         ti.token = SL_PP_LINE;
+         ti.data.line.lineno = context->line - 1;
+         ti.data.line.fileno = context->file;
+         if (sl_pp_process_out(&context->process_state, &ti)) {
+            strcpy(context->error_msg, "out of memory");
+            return -1;
+         }
+
+         ti.token = SL_PP_NEWLINE;
+         if (sl_pp_process_out(&context->process_state, &ti)) {
+            strcpy(context->error_msg, "out of memory");
+            return -1;
+         }
+      }
+   }
+
+   for (;;) {
+      struct sl_pp_token_info input;
+      int found_eof = 0;
+
+      if (context->process_state.out_len) {
+         assert(context->process_state.out);
+         *output = context->process_state.out[0];
+
+         if (context->process_state.out_len > 1) {
+            unsigned int i;
+
+            for (i = 1; i < context->process_state.out_len; i++) {
+               context->process_state.out[i - 1] = context->process_state.out[i];
+            }
+         }
+         context->process_state.out_len--;
+
+         return 0;
+      }
+
+      if (sl_pp_token_buffer_skip_white(&context->tokens, &input)) {
+         return -1;
+      }
+      if (input.token == SL_PP_HASH) {
+         if (sl_pp_token_buffer_skip_white(&context->tokens, &input)) {
+            return -1;
+         }
+         switch (input.token) {
+         case SL_PP_IDENTIFIER:
+            {
+               int name;
+               int found_eol = 0;
+               struct sl_pp_token_info endof;
+               struct sl_pp_token_peek peek;
+               int result = 0;
+
+               /* Directive name. */
+               name = input.data.identifier;
+
+               if (sl_pp_token_buffer_skip_white(&context->tokens, &input)) {
+                  return -1;
+               }
+               sl_pp_token_buffer_unget(&context->tokens, &input);
+
+               if (sl_pp_token_peek_init(&peek, &context->tokens)) {
+                  return -1;
+               }
+
+               while (!found_eol) {
+                  if (sl_pp_token_peek_get(&peek, &input)) {
+                     sl_pp_token_peek_destroy(&peek);
+                     return -1;
+                  }
+                  switch (input.token) {
+                  case SL_PP_NEWLINE:
+                     /* Preserve newline just for the sake of line numbering. */
+                     endof = input;
+                     found_eol = 1;
+                     break;
+
+                  case SL_PP_EOF:
+                     endof = input;
+                     found_eof = 1;
+                     found_eol = 1;
+                     break;
+
+                  default:
+                     break;
+                  }
+               }
+
+               if (name == context->dict._if) {
+                  struct sl_pp_token_buffer buffer;
+
+                  result = sl_pp_token_peek_to_buffer(&peek, &buffer);
+                  if (result == 0) {
+                     result = sl_pp_process_if(context, &buffer);
+                     sl_pp_token_buffer_destroy(&buffer);
+                  }
+               } else if (name == context->dict.ifdef) {
+                  result = sl_pp_process_ifdef(context, peek.tokens, 0, peek.size - 1);
+               } else if (name == context->dict.ifndef) {
+                  result = sl_pp_process_ifndef(context, peek.tokens, 0, peek.size - 1);
+               } else if (name == context->dict.elif) {
+                  struct sl_pp_token_buffer buffer;
+
+                  result = sl_pp_token_peek_to_buffer(&peek, &buffer);
+                  if (result == 0) {
+                     result = sl_pp_process_elif(context, &buffer);
+                     sl_pp_token_buffer_destroy(&buffer);
+                  }
+               } else if (name == context->dict._else) {
+                  result = sl_pp_process_else(context, peek.tokens, 0, peek.size - 1);
+               } else if (name == context->dict.endif) {
+                  result = sl_pp_process_endif(context, peek.tokens, 0, peek.size - 1);
+               } else if (context->if_value) {
+                  if (name == context->dict.define) {
+                     result = sl_pp_process_define(context, peek.tokens, 0, peek.size - 1);
+                  } else if (name == context->dict.error) {
+                     sl_pp_process_error(context, peek.tokens, 0, peek.size - 1);
+                     result = -1;
+                  } else if (name == context->dict.extension) {
+                     result = sl_pp_process_extension(context, peek.tokens, 0, peek.size - 1, &context->process_state);
+                  } else if (name == context->dict.line) {
+                     struct sl_pp_token_buffer buffer;
+
+                     result = sl_pp_token_peek_to_buffer(&peek, &buffer);
+                     if (result == 0) {
+                        result = sl_pp_process_line(context, &buffer, &context->process_state);
+                        sl_pp_token_buffer_destroy(&buffer);
+                     }
+                  } else if (name == context->dict.pragma) {
+                     result = sl_pp_process_pragma(context, peek.tokens, 0, peek.size - 1, &context->process_state);
+                  } else if (name == context->dict.undef) {
+                     result = sl_pp_process_undef(context, peek.tokens, 0, peek.size - 1);
+                  } else {
+                     strcpy(context->error_msg, "unrecognised directive name");
+                     result = -1;
+                  }
+               }
+
+               sl_pp_token_peek_commit(&peek);
+               sl_pp_token_peek_destroy(&peek);
+
+               if (result) {
+                  return result;
+               }
+
+               if (sl_pp_process_out(&context->process_state, &endof)) {
+                  strcpy(context->error_msg, "out of memory");
+                  return -1;
+               }
+               context->line++;
+            }
+            break;
+
+         case SL_PP_NEWLINE:
+            /* Empty directive. */
+            if (sl_pp_process_out(&context->process_state, &input)) {
+               strcpy(context->error_msg, "out of memory");
+               return -1;
+            }
+            context->line++;
+            break;
+
+         case SL_PP_EOF:
+            /* Empty directive. */
+            if (sl_pp_process_out(&context->process_state, &input)) {
+               strcpy(context->error_msg, "out of memory");
+               return -1;
+            }
+            found_eof = 1;
+            break;
+
+         default:
+            strcpy(context->error_msg, "expected a directive name");
+            return -1;
+         }
+      } else {
+         int found_eol = 0;
+
+         sl_pp_token_buffer_unget(&context->tokens, &input);
+
+         while (!found_eol) {
+            if (sl_pp_token_buffer_get(&context->tokens, &input)) {
+               return -1;
+            }
+
+            switch (input.token) {
+            case SL_PP_WHITESPACE:
+               /* Drop whitespace all together at this point. */
+               break;
+
+            case SL_PP_NEWLINE:
+               /* Preserve newline just for the sake of line numbering. */
+               if (sl_pp_process_out(&context->process_state, &input)) {
+                  strcpy(context->error_msg, "out of memory");
+                  return -1;
+               }
+               context->line++;
+               found_eol = 1;
+               break;
+
+            case SL_PP_EOF:
+               if (sl_pp_process_out(&context->process_state, &input)) {
+                  strcpy(context->error_msg, "out of memory");
+                  return -1;
+               }
+               found_eof = 1;
+               found_eol = 1;
+               break;
+
+            case SL_PP_IDENTIFIER:
+               sl_pp_token_buffer_unget(&context->tokens, &input);
+               if (sl_pp_macro_expand(context, &context->tokens, NULL, &context->process_state,
+                                      context->if_value ? sl_pp_macro_expand_normal : sl_pp_macro_expand_mute)) {
+                  return -1;
+               }
+               break;
+
+            default:
+               if (context->if_value) {
+                  if (sl_pp_process_out(&context->process_state, &input)) {
+                     strcpy(context->error_msg, "out of memory");
+                     return -1;
+                  }
+               }
+            }
+         }
+      }
+
+      if (found_eof) {
+         if (context->if_ptr != SL_PP_MAX_IF_NESTING) {
+            strcpy(context->error_msg, "expected `#endif' directive");
+            return -1;
+         }
+      }
+   }
+}
+
+int
+sl_pp_process(struct sl_pp_context *context,
+              struct sl_pp_token_info **output)
+{
+   struct sl_pp_process_state state;
+
+   memset(&state, 0, sizeof(state));
+   for (;;) {
+      struct sl_pp_token_info input;
+
+      if (sl_pp_process_get(context, &input)) {
+         free(state.out);
+         return -1;
+      }
+      if (sl_pp_process_out(&state, &input)) {
+         free(state.out);
+         return -1;
+      }
+      if (input.token == SL_PP_EOF) {
+         *output = state.out;
+         return 0;
+      }
+   }
+}