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63 lines
1.3 KiB
C
63 lines
1.3 KiB
C
/*
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* Copyright 2013 Ecole Normale Superieure
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*
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* Use of this software is governed by the MIT license
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*
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* Written by Sven Verdoolaege,
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* Ecole Normale Superieure, 45 rue d'Ulm, 75230 Paris, France
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*/
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#include <string.h>
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/* Extract a mapping key from the token "tok".
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* Return KEY_ERROR on error, i.e., if "tok" does not
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* correspond to any known key.
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*/
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static KEY extract_key(__isl_keep isl_stream *s, struct isl_token *tok)
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{
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int type;
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char *name;
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KEY key;
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isl_ctx *ctx;
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if (!tok)
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return KEY_ERROR;
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type = isl_token_get_type(tok);
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if (type != ISL_TOKEN_IDENT && type != ISL_TOKEN_STRING) {
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isl_stream_error(s, tok, "expecting key");
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return KEY_ERROR;
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}
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ctx = isl_stream_get_ctx(s);
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name = isl_token_get_str(ctx, tok);
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if (!name)
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return KEY_ERROR;
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for (key = 0; key < KEY_END; ++key) {
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if (!strcmp(name, key_str[key]))
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break;
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}
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free(name);
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if (key >= KEY_END)
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isl_die(ctx, isl_error_invalid, "unknown key",
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return KEY_ERROR);
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return key;
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}
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/* Read a key from "s" and return the corresponding enum.
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* Return KEY_ERROR on error, i.e., if the first token
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* on the stream does not correspond to any known key.
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*/
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static KEY get_key(__isl_keep isl_stream *s)
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{
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struct isl_token *tok;
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KEY key;
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tok = isl_stream_next_token(s);
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key = extract_key(s, tok);
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isl_token_free(tok);
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return key;
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}
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