string/parsing.hpp

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• Last update: 2023-06-06 01:19:06+09:00
• Include: #include "string/parsing.hpp"
• Link: https://gist.github.com/draftcode/1357281

Code

#pragma once

#include <cassert>
#include <cctype>
#include <iostream>
#include <string>

/*
    reference: https://gist.github.com/draftcode/1357281
*/

namespace ebi {

typedef std::string::const_iterator State;
class ParseError {};

bool expect(State &begin, char expected) {
    if (*begin == expected) {
        return true;
    } else {
        return false;
    }
}

// beginがexpectedを指していたらbeginを一つ進める。
void consume(State &begin, char expected) {
    if (*begin == expected) {
        begin++;
    } else {
        assert(0);
    }
}

bool isdigit(char c) {
    return '0' <= c && c <= '9';
}

bool isAlpha(char c) {
    return 'A' <= c && c <= 'Z';
}

bool isalpha(char c) {
    return 'a' <= c && c <= 'z';
}

}  // namespace ebi

#line 2 "string/parsing.hpp"

#include <cassert>
#include <cctype>
#include <iostream>
#include <string>

/*
    reference: https://gist.github.com/draftcode/1357281
*/

namespace ebi {

typedef std::string::const_iterator State;
class ParseError {};

bool expect(State &begin, char expected) {
    if (*begin == expected) {
        return true;
    } else {
        return false;
    }
}

// beginがexpectedを指していたらbeginを一つ進める。
void consume(State &begin, char expected) {
    if (*begin == expected) {
        begin++;
    } else {
        assert(0);
    }
}

bool isdigit(char c) {
    return '0' <= c && c <= '9';
}

bool isAlpha(char c) {
    return 'A' <= c && c <= 'Z';
}

bool isalpha(char c) {
    return 'a' <= c && c <= 'z';
}

}  // namespace ebi

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