include/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 #include <isl_hash.h>
  15 #include <isl_obj.h>
  16
  17 #if defined(__cplusplus)
  18 extern "C" {
  19 #endif
  20
  21 enum isl_token_type { ISL_TOKEN_ERROR = -1,
  22                         ISL_TOKEN_UNKNOWN = 256, ISL_TOKEN_VALUE,
  23                         ISL_TOKEN_IDENT, ISL_TOKEN_GE,
  24                         ISL_TOKEN_LE, ISL_TOKEN_GT, ISL_TOKEN_LT,
  25                         ISL_TOKEN_TO, ISL_TOKEN_AND,
  26                         ISL_TOKEN_OR, ISL_TOKEN_EXISTS,
  27                         ISL_TOKEN_DEF, ISL_TOKEN_INFTY, ISL_TOKEN_NAN,
  28                         ISL_TOKEN_STRING,
  29                         ISL_TOKEN_LAST };
  30
  31 struct isl_token {
  32         enum isl_token_type  type;
  33
  34         unsigned int on_new_line : 1;
  35         int line;
  36         int col;
  37
  38         union {
  39                 isl_int v;
  40                 char    *s;
  41         } u;
  42 };
  43
  44 void isl_token_free(struct isl_token *tok);
  45
  46 struct isl_stream {
  47         struct isl_ctx  *ctx;
  48         FILE            *file;
  49         const char      *str;
  50         int             line;
  51         int             col;
  52         int             eof;
  53
  54         char            *buffer;
  55         size_t          size;
  56         size_t          len;
  57         int             c;
  58
  59         struct isl_token        *tokens[5];
  60         int             n_token;
  61
  62         struct isl_hash_table   *keywords;
  63         enum isl_token_type      next_type;
  64 };
  65
  66 struct isl_stream* isl_stream_new_file(struct isl_ctx *ctx, FILE *file);
  67 struct isl_stream* isl_stream_new_str(struct isl_ctx *ctx, const char *str);
  68 void isl_stream_free(struct isl_stream *s);
  69
  70 void isl_stream_error(struct isl_stream *s, struct isl_token *tok, char *msg);
  71
  72 struct isl_token *isl_stream_next_token(struct isl_stream *s);
  73 struct isl_token *isl_stream_next_token_on_same_line(struct isl_stream *s);
  74 int isl_stream_next_token_is(struct isl_stream *s, int type);
  75 void isl_stream_push_token(struct isl_stream *s, struct isl_token *tok);
  76 int isl_stream_eat_if_available(struct isl_stream *s, int type);
  77 char *isl_stream_read_ident_if_available(struct isl_stream *s);
  78 int isl_stream_eat(struct isl_stream *s, int type);
  79 int isl_stream_is_empty(struct isl_stream *s);
  80
  81 enum isl_token_type isl_stream_register_keyword(struct isl_stream *s,
  82         const char *name);
  83
  84 struct isl_obj isl_stream_read_obj(struct isl_stream *s);
  85 __isl_give isl_map *isl_stream_read_map(struct isl_stream *s, int nparam);
  86
  87 #if defined(__cplusplus)
  88 }
  89 #endif
  90
  91 #endif