#include "util.h"

#include <stdio.h>
#include <string.h>

int is_whitespace(char c) {
    return c == ' ' || c == '\t' || c == '\n' || c == '\r' || c == '\v' || c == '\f';
}

int is_alpha(char c) {
    char tmp_lower = c - 'a';
    char tmp_upper = c - 'A';

    return (tmp_lower <= ('z' - 'a') && 0 <= tmp_lower) || (tmp_upper <= ('Z' - 'A') && 0 <= tmp_upper);
}

int is_digit(char c) {
    char tmp = c - '0';
    return 0 <= tmp && tmp <= 9;
}

int is_alpha_digit(char c) {
    return is_digit(c) || is_alpha(c) || c == '_';
}

void print_token(Token tok) {
    char token_name[20];

    switch (tok.type) {
        case LBRACK:
            strcpy(token_name, "LBRACK");
            break;
        case RBRACK:
            strcpy(token_name, "RBRACK");
            break;
        case LCURLY:
            strcpy(token_name, "LCURLY");
            break;
        case RCURLY:
            strcpy(token_name, "RCURLY");
            break;
        case LPAREN:
            strcpy(token_name, "LPAREN");
            break;
        case RPAREN:
            strcpy(token_name, "RPAREN");
            break;
        case SEMI:
            strcpy(token_name, "SEMI");
            break;
        case COMMA:
            strcpy(token_name, "COMMA");
            break;
        case ARROW:
            strcpy(token_name, "ARROW");
            break;
        case STAR:
            strcpy(token_name, "STAR");
            break;
        case ANDREF:
            strcpy(token_name, "ANDREF");
            break;
        case DOLLAR:
            strcpy(token_name, "DOLLAR");
            break;
        case COMMENT:
            strcpy(token_name, "COMMENT");
            break;
        case ID:
            strcpy(token_name, "ID");
            break;
        case NUM:
            strcpy(token_name, "NUM");
            break;
        case STRING_LITERAL:
            strcpy(token_name, "STRING_LITERAL");
            break;
        case VAL:
            strcpy(token_name, "VAL");
            break;
        case RETURN:
            strcpy(token_name, "RETURN");
            break;
        case IF:
            strcpy(token_name, "IF");
            break;
        case ELSE:
            strcpy(token_name, "ELSE");
            break;
        case EOF_TOKEN:
            strcpy(token_name, "EOF_TOKEN");
            break;
        case ERROR:
            strcpy(token_name, "ERROR");
            break;
        default:
            strcpy(token_name, "UNKNOWN");
            break;
    }

    printf("Token Name: %s ", token_name);
    printf("Line: %u ", tok.line);
    if (tok.type == ID || tok.type == NUM || tok.type == STRING_LITERAL) {
        printf("Data: %s", tok.data.string);
    }
}