// parser.h
#ifndef _ZIG0_PARSE_H__
#define _ZIG0_PARSE_H__

#include "ast.h"
#include "common.h"
#include <setjmp.h>
#include <stdbool.h>
#include <stdint.h>
#include <string.h>

typedef struct {
    const char* source;
    uint32_t source_len;

    TokenizerTag* token_tags;
    AstIndex* token_starts;
    uint32_t tokens_len;

    AstTokenIndex tok_i;

    AstNodeList nodes;
    AstNodeIndexSlice extra_data;
    AstNodeIndexSlice scratch;
    jmp_buf error_jmp;
    char* err_buf;
} Parser;

#define PARSE_ERR_BUF_SIZE 200

_Noreturn static inline void fail(Parser* p, const char* msg) {
    size_t len = strlen(msg);
    if (len >= PARSE_ERR_BUF_SIZE)
        len = PARSE_ERR_BUF_SIZE - 1;
    memcpy(p->err_buf, msg, len);
    p->err_buf[len] = '\0';
    longjmp(p->error_jmp, 1);
}

Parser* parserInit(const char* source, uint32_t len);
void parserDeinit(Parser* parser);
void parseRoot(Parser* parser);

#endif