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1/*2 * Copyright 2013 Ecole Normale Superieure3 *4 * Use of this software is governed by the MIT license5 *6 * Written by Sven Verdoolaege,7 * Ecole Normale Superieure, 45 rue d'Ulm, 75230 Paris, France8 */9 10#include <string.h>11 12/* Extract a mapping key from the token "tok".13 * Return KEY_ERROR on error, i.e., if "tok" does not14 * correspond to any known key.15 */16static KEY KEY_EXTRACT(__isl_keep isl_stream *s, struct isl_token *tok)17{18 isl_bool has_string;19 char *name;20 KEY key;21 isl_ctx *ctx;22 23 has_string = isl_token_has_str(tok);24 if (has_string < 0)25 return KEY_ERROR;26 if (!has_string) {27 isl_stream_error(s, tok, "expecting key");28 return KEY_ERROR;29 }30 31 ctx = isl_stream_get_ctx(s);32 name = isl_token_get_str(ctx, tok);33 if (!name)34 return KEY_ERROR;35 36 for (key = 0; key < KEY_END; ++key) {37 if (KEY_STR[key] && !strcmp(name, KEY_STR[key]))38 break;39 }40 free(name);41 42 if (key >= KEY_END)43 isl_die(ctx, isl_error_invalid, "unknown key",44 return KEY_ERROR);45 return key;46}47 48/* Read a key from "s" and return the corresponding enum.49 * Return KEY_ERROR on error, i.e., if the first token50 * on the stream does not correspond to any known key.51 */52static KEY KEY_GET(__isl_keep isl_stream *s)53{54 struct isl_token *tok;55 KEY key;56 57 tok = isl_stream_next_token(s);58 key = KEY_EXTRACT(s, tok);59 isl_token_free(tok);60 61 return key;62}63