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_LEX_GE, ISL_TOKEN_LEX_LE,
  26                         ISL_TOKEN_LEX_GT, ISL_TOKEN_LEX_LT,
  27                         ISL_TOKEN_TO, ISL_TOKEN_AND,
  28                         ISL_TOKEN_OR, ISL_TOKEN_EXISTS, ISL_TOKEN_NOT,
  29                         ISL_TOKEN_DEF, ISL_TOKEN_INFTY, ISL_TOKEN_NAN,
  30                         ISL_TOKEN_MIN, ISL_TOKEN_MAX, ISL_TOKEN_RAT,
  31                         ISL_TOKEN_TRUE, ISL_TOKEN_FALSE,
  32                         ISL_TOKEN_CEILD, ISL_TOKEN_FLOORD,
  33                         ISL_TOKEN_STRING,
  34                         ISL_TOKEN_LAST };
  35
  36 struct isl_token {
  37         enum isl_token_type  type;
  38
  39         unsigned int on_new_line : 1;
  40         unsigned is_keyword : 1;
  41         int line;
  42         int col;
  43
  44         union {
  45                 isl_int v;
  46                 char    *s;
  47         } u;
  48 };
  49
  50 void isl_token_free(struct isl_token *tok);
  51
  52 struct isl_stream {
  53         struct isl_ctx  *ctx;
  54         FILE            *file;
  55         const char      *str;
  56         int             line;
  57         int             col;
  58         int             eof;
  59
  60         char            *buffer;
  61         size_t          size;
  62         size_t          len;
  63         int             c;
  64         int             un[5];
  65         int             n_un;
  66
  67         struct isl_token        *tokens[5];
  68         int             n_token;
  69
  70         struct isl_hash_table   *keywords;
  71         enum isl_token_type      next_type;
  72 };
  73
  74 struct isl_stream* isl_stream_new_file(struct isl_ctx *ctx, FILE *file);
  75 struct isl_stream* isl_stream_new_str(struct isl_ctx *ctx, const char *str);
  76 void isl_stream_free(struct isl_stream *s);
  77
  78 void isl_stream_error(struct isl_stream *s, struct isl_token *tok, char *msg);
  79
  80 struct isl_token *isl_stream_next_token(struct isl_stream *s);
  81 struct isl_token *isl_stream_next_token_on_same_line(struct isl_stream *s);
  82 int isl_stream_next_token_is(struct isl_stream *s, int type);
  83 void isl_stream_push_token(struct isl_stream *s, struct isl_token *tok);
  84 void isl_stream_flush_tokens(struct isl_stream *s);
  85 int isl_stream_eat_if_available(struct isl_stream *s, int type);
  86 char *isl_stream_read_ident_if_available(struct isl_stream *s);
  87 int isl_stream_eat(struct isl_stream *s, int type);
  88 int isl_stream_is_empty(struct isl_stream *s);
  89 int isl_stream_skip_line(struct isl_stream *s);
  90
  91 enum isl_token_type isl_stream_register_keyword(struct isl_stream *s,
  92         const char *name);
  93
  94 struct isl_obj isl_stream_read_obj(struct isl_stream *s);
  95 __isl_give isl_map *isl_stream_read_map(struct isl_stream *s, int nparam);
  96 __isl_give isl_set *isl_stream_read_set(struct isl_stream *s, int nparam);
  97 __isl_give isl_pw_qpolynomial *isl_stream_read_pw_qpolynomial(
  98         struct isl_stream *s);
  99 __isl_give isl_union_map *isl_stream_read_union_map(struct isl_stream *s);
 100
 101 #if defined(__cplusplus)
 102 }
 103 #endif
 104
 105 #endif