isl_stream.h

   1 #ifndef ISL_STREAM_H
   2 #define ISL_STREAM_H
   3
   4 #include <stdio.h>
   5
   6 #if defined(__cplusplus)
   7 extern "C" {
   8 #endif
   9
  10 enum isl_token_type { ISL_TOKEN_UNKNOWN = 256, ISL_TOKEN_VALUE,
  11                         ISL_TOKEN_IDENT, ISL_TOKEN_GE,
  12                         ISL_TOKEN_LE, ISL_TOKEN_TO, ISL_TOKEN_AND,
  13                         ISL_TOKEN_EXISTS };
  14
  15 struct isl_token {
  16         enum isl_token_type  type;
  17
  18         unsigned int on_new_line : 1;
  19         int line;
  20         int col;
  21
  22         union {
  23                 isl_int v;
  24                 char    *s;
  25         } u;
  26 };
  27
  28 void isl_token_free(struct isl_token *tok);
  29
  30 struct isl_stream {
  31         struct isl_ctx  *ctx;
  32         FILE            *file;
  33         const char      *str;
  34         int             line;
  35         int             col;
  36         int             eof;
  37
  38         char            *buffer;
  39         size_t          size;
  40         size_t          len;
  41         int             c;
  42
  43         struct isl_token        *tokens[5];
  44         int             n_token;
  45 };
  46
  47 struct isl_stream* isl_stream_new_file(struct isl_ctx *ctx, FILE *file);
  48 struct isl_stream* isl_stream_new_str(struct isl_ctx *ctx, const char *str);
  49 void isl_stream_free(struct isl_stream *s);
  50
  51 void isl_stream_error(struct isl_stream *s, struct isl_token *tok, char *msg);
  52
  53 struct isl_token *isl_stream_next_token(struct isl_stream *s);
  54 void isl_stream_push_token(struct isl_stream *s, struct isl_token *tok);
  55 int isl_stream_eat(struct isl_stream *s, int type);
  56
  57 #if defined(__cplusplus)
  58 }
  59 #endif
  60
  61 #endif