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                         ISL_TOKEN_DEF };
  25
  26 struct isl_token {
  27         enum isl_token_type  type;
  28
  29         unsigned int on_new_line : 1;
  30         int line;
  31         int col;
  32
  33         union {
  34                 isl_int v;
  35                 char    *s;
  36         } u;
  37 };
  38
  39 void isl_token_free(struct isl_token *tok);
  40
  41 struct isl_stream {
  42         struct isl_ctx  *ctx;
  43         FILE            *file;
  44         const char      *str;
  45         int             line;
  46         int             col;
  47         int             eof;
  48
  49         char            *buffer;
  50         size_t          size;
  51         size_t          len;
  52         int             c;
  53
  54         struct isl_token        *tokens[5];
  55         int             n_token;
  56 };
  57
  58 struct isl_stream* isl_stream_new_file(struct isl_ctx *ctx, FILE *file);
  59 struct isl_stream* isl_stream_new_str(struct isl_ctx *ctx, const char *str);
  60 void isl_stream_free(struct isl_stream *s);
  61
  62 void isl_stream_error(struct isl_stream *s, struct isl_token *tok, char *msg);
  63
  64 struct isl_token *isl_stream_next_token(struct isl_stream *s);
  65 struct isl_token *isl_stream_next_token_on_same_line(struct isl_stream *s);
  66 int isl_stream_next_token_is(struct isl_stream *s, int type);
  67 void isl_stream_push_token(struct isl_stream *s, struct isl_token *tok);
  68 int isl_stream_eat_if_available(struct isl_stream *s, int type);
  69 char *isl_stream_read_ident_if_available(struct isl_stream *s);
  70 int isl_stream_eat(struct isl_stream *s, int type);
  71 int isl_stream_is_empty(struct isl_stream *s);
  72
  73 #if defined(__cplusplus)
  74 }
  75 #endif
  76
  77 #endif