isl_stream.h

   1 /*
   2  * Copyright 2008-2009 Katholieke Universiteit Leuven
   3  *
   4  * Use of this software is governed by the GNU LGPLv2.1 license
   5  *
   6  * Written by Sven Verdoolaege, K.U.Leuven, Departement
   7  * Computerwetenschappen, Celestijnenlaan 200A, B-3001 Leuven, Belgium
   8  */
   9
  10 #ifndef ISL_STREAM_H
  11 #define ISL_STREAM_H
  12
  13 #include <stdio.h>
  14
  15 #if defined(__cplusplus)
  16 extern "C" {
  17 #endif
  18
  19 enum isl_token_type { ISL_TOKEN_UNKNOWN = 256, ISL_TOKEN_VALUE,
  20                         ISL_TOKEN_IDENT, ISL_TOKEN_GE,
  21                         ISL_TOKEN_LE, ISL_TOKEN_TO, ISL_TOKEN_AND,
  22                         ISL_TOKEN_OR, ISL_TOKEN_EXISTS };
  23
  24 struct isl_token {
  25         enum isl_token_type  type;
  26
  27         unsigned int on_new_line : 1;
  28         int line;
  29         int col;
  30
  31         union {
  32                 isl_int v;
  33                 char    *s;
  34         } u;
  35 };
  36
  37 void isl_token_free(struct isl_token *tok);
  38
  39 struct isl_stream {
  40         struct isl_ctx  *ctx;
  41         FILE            *file;
  42         const char      *str;
  43         int             line;
  44         int             col;
  45         int             eof;
  46
  47         char            *buffer;
  48         size_t          size;
  49         size_t          len;
  50         int             c;
  51
  52         struct isl_token        *tokens[5];
  53         int             n_token;
  54 };
  55
  56 struct isl_stream* isl_stream_new_file(struct isl_ctx *ctx, FILE *file);
  57 struct isl_stream* isl_stream_new_str(struct isl_ctx *ctx, const char *str);
  58 void isl_stream_free(struct isl_stream *s);
  59
  60 void isl_stream_error(struct isl_stream *s, struct isl_token *tok, char *msg);
  61
  62 struct isl_token *isl_stream_next_token(struct isl_stream *s);
  63 void isl_stream_push_token(struct isl_stream *s, struct isl_token *tok);
  64 int isl_stream_eat(struct isl_stream *s, int type);
  65
  66 #if defined(__cplusplus)
  67 }
  68 #endif
  69
  70 #endif