42sh/src/parser/parser.c

#include "parser.h"

#include <stdbool.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "lexer/lexer.h"
#include "parser/parsing_utils.h"
#include "utils/lists/lists.h"

// === Static functions
// ...

// === Functions

struct ast *get_ast()
{
    struct lexer_context *ctx = calloc(1, sizeof(struct lexer_context));
    struct token *token = PEEK_TOKEN();
    struct ast *res;

    if (token->type == TOKEN_EOF)
    {
        token = pop_token(ctx);
        return ast_create_end();
    }
    else if (token->type == TOKEN_NEWLINE)
    {
        token = pop_token(ctx);
        return ast_create_void();
    }
    else // TOKEN WORD
    {
        res = parse_list(ctx);
    }

    /*
       if (token == NULL)
       {
       puts("Internal error: cannot get the following token");
       puts("Hint: EOF might be missing");
       return NULL;
       }
       */
    destroy_lexer_context(&ctx);

    return res;
}

// TODO
struct ast *get_ast_str(char *command)
{
    (void)command;
    return NULL;
}