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/**************************************************************************
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* Copyright 2009 VMware, Inc.
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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**************************************************************************/
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#include "sl_pp_token_util.h"
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sl_pp_token_buffer_init(struct sl_pp_token_buffer *buffer,
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struct sl_pp_context *context)
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buffer->context = context;
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buffer->capacity = 64;
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buffer->tokens = malloc(buffer->capacity * sizeof(struct sl_pp_token_info));
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if (!buffer->tokens) {
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sl_pp_token_buffer_destroy(struct sl_pp_token_buffer *buffer)
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sl_pp_token_buffer_get(struct sl_pp_token_buffer *buffer,
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struct sl_pp_token_info *out)
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/* Pop from stack first if not empty. */
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*out = buffer->tokens[--buffer->size];
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assert(buffer->context);
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return sl_pp_token_get(buffer->context, out);
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sl_pp_token_buffer_unget(struct sl_pp_token_buffer *buffer,
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const struct sl_pp_token_info *in)
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/* Resize if needed. */
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if (buffer->size == buffer->capacity) {
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buffer->capacity += 64;
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buffer->tokens = realloc(buffer->tokens,
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buffer->capacity * sizeof(struct sl_pp_token_info));
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assert(buffer->tokens);
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/* Push token on stack. */
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buffer->tokens[buffer->size++] = *in;
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sl_pp_token_buffer_skip_white(struct sl_pp_token_buffer *buffer,
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struct sl_pp_token_info *out)
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if (sl_pp_token_buffer_get(buffer, out)) {
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while (out->token == SL_PP_WHITESPACE) {
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if (sl_pp_token_buffer_get(buffer, out)) {
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sl_pp_token_peek_init(struct sl_pp_token_peek *peek,
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struct sl_pp_token_buffer *buffer)
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peek->buffer = buffer;
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peek->tokens = malloc(peek->capacity * sizeof(struct sl_pp_token_info));
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sl_pp_token_peek_destroy(struct sl_pp_token_peek *peek)
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sl_pp_token_buffer_unget(peek->buffer, &peek->tokens[--peek->size]);
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sl_pp_token_peek_get(struct sl_pp_token_peek *peek,
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struct sl_pp_token_info *out)
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/* Get token from buffer. */
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if (sl_pp_token_buffer_get(peek->buffer, out)) {
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if (peek->size == peek->capacity) {
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peek->capacity += 64;
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peek->tokens = realloc(peek->tokens,
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peek->capacity * sizeof(struct sl_pp_token_info));
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assert(peek->tokens);
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peek->tokens[peek->size++] = *out;
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sl_pp_token_peek_commit(struct sl_pp_token_peek *peek)
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sl_pp_token_peek_to_buffer(const struct sl_pp_token_peek *peek,
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struct sl_pp_token_buffer *buffer)
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if (sl_pp_token_buffer_init(buffer, NULL)) {
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for (i = peek->size; i > 0; i--) {
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sl_pp_token_buffer_unget(buffer, &peek->tokens[i - 1]);
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sl_pp_token_peek_skip_white(struct sl_pp_token_peek *peek,
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struct sl_pp_token_info *out)
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if (sl_pp_token_peek_get(peek, out)) {
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while (out->token == SL_PP_WHITESPACE) {
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if (sl_pp_token_peek_get(peek, out)) {