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_GT, ISL_TOKEN_LT,
  22                         ISL_TOKEN_TO, ISL_TOKEN_AND,
  23                         ISL_TOKEN_OR, ISL_TOKEN_EXISTS };
  24
  25 struct isl_token {
  26         enum isl_token_type  type;
  27
  28         unsigned int on_new_line : 1;
  29         int line;
  30         int col;
  31
  32         union {
  33                 isl_int v;
  34                 char    *s;
  35         } u;
  36 };
  37
  38 void isl_token_free(struct isl_token *tok);
  39
  40 struct isl_stream {
  41         struct isl_ctx  *ctx;
  42         FILE            *file;
  43         const char      *str;
  44         int             line;
  45         int             col;
  46         int             eof;
  47
  48         char            *buffer;
  49         size_t          size;
  50         size_t          len;
  51         int             c;
  52
  53         struct isl_token        *tokens[5];
  54         int             n_token;
  55 };
  56
  57 struct isl_stream* isl_stream_new_file(struct isl_ctx *ctx, FILE *file);
  58 struct isl_stream* isl_stream_new_str(struct isl_ctx *ctx, const char *str);
  59 void isl_stream_free(struct isl_stream *s);
  60
  61 void isl_stream_error(struct isl_stream *s, struct isl_token *tok, char *msg);
  62
  63 struct isl_token *isl_stream_next_token(struct isl_stream *s);
  64 struct isl_token *isl_stream_next_token_on_same_line(struct isl_stream *s);
  65 void isl_stream_push_token(struct isl_stream *s, struct isl_token *tok);
  66 int isl_stream_eat(struct isl_stream *s, int type);
  67
  68 #if defined(__cplusplus)
  69 }
  70 #endif
  71
  72 #endif