tstream.h

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#pragma once
 
#include "def.h"
#include "frontend/lexer/token.h"  // ps_token
 
struct ps_tstream {
    usize index;
 
    const struct ps_token_arr* tokens;
 
    const struct ps_file_ctx* file_ctx;
};
 
void ps_tstream_init(struct ps_tstream* ts, const struct ps_token_arr* tokens,
    const struct ps_file_ctx* file_ctx);
 
bool ps_tstream_is_eof(struct ps_tstream* ts);
 
struct ps_token* ps_tstream_current(struct ps_tstream* ts);
 
void ps_tstream_advance_n(struct ps_tstream* ts, isize n);
 
#define ps_tstream_advance(tstream) ps_tstream_advance_n(tstream, 1)
 
struct ps_token* ps_tstream_peek(struct ps_tstream* ts, usize n,
    enum ps_token_type type);
 
struct ps_token* ps_tstream_match(struct ps_tstream* ts,
    enum ps_token_type type, STR ctx);
 
struct ps_token* ps_tstream_match_any(struct ps_tstream* ts,
    enum ps_token_type types[], usize count, STR ctx);