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struct token_pos |
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{ |
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char *beg; |
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char *end; |
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}; |
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typedef struct token_pos token_pos_t; |
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#define dTOKENS(init_lim) \ |
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token_pos_t token_buf[init_lim]; \ |
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int token_lim = init_lim; \ |
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token_pos_t *tokens = token_buf; \ |
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int num_tokens = 0 |
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#define PUSH_TOKEN(p_beg, p_end) \ |
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STMT_START { \ |
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++num_tokens; \ |
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if (num_tokens == token_lim) \ |
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tokens_grow(&tokens, &token_lim, (bool)(tokens != token_buf)); \ |
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tokens[num_tokens-1].beg = p_beg; \ |
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tokens[num_tokens-1].end = p_end; \ |
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} STMT_END |
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#define FREE_TOKENS \ |
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STMT_START { \ |
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if (tokens != token_buf) \ |
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Safefree(tokens); \ |
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} STMT_END |
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static void |
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2573
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tokens_grow(token_pos_t **token_ptr, int *token_lim_ptr, bool tokens_on_heap) |
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{ |
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2573
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int new_lim = *token_lim_ptr; |
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2573
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50
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if (new_lim < 4) |
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0
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new_lim = 4; |
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2573
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new_lim *= 2; |
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2573
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100
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if (tokens_on_heap) { |
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1176
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Renew(*token_ptr, new_lim, token_pos_t); |
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} |
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else { |
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token_pos_t *new_tokens; |
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int i; |
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1397
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50
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New(57, new_tokens, new_lim, token_pos_t); |
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22517
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100
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for (i = 0; i < *token_lim_ptr; i++) |
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21120
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new_tokens[i] = (*token_ptr)[i]; |
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1397
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*token_ptr = new_tokens; |
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} |
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2573
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*token_lim_ptr = new_lim; |
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2573
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} |