Nasal-Interpreter/nasal.h

#ifndef __NASAL_H__
#define __NASAL_H__

#pragma GCC optimize(2)

#include <stdint.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <iostream>
#include <fstream>
#include <sstream>
#include <algorithm>
#include <cstring>
#include <cstdlib>
#include <ctime>
#include <cmath>
#include <list>
#include <stack>
#include <queue>
#include <vector>
#include <unordered_map>

/*
    check if a string can be converted to a number
    if this string cannot be converted to a number,it will return nan
*/
inline double hex_to_double(const char* str)
{
    double ret=0;
    for(;*str;++str)
    {
        ret*=16;
        if('0'<=*str && *str<='9')
            ret+=(*str-'0');
        else if('a'<=*str && *str<='f')
            ret+=(*str-'a'+10);
        else if('A'<=*str && *str<='F')
            ret+=(*str-'A'+10);
        else
            return nan("");
    }
    return ret;
}
inline double oct_to_double(const char* str)
{
    double ret=0;
    for(;*str;++str)
    {
        ret*=8;
        if('0'<=*str && *str<'8')
            ret+=(*str-'0');
        else
            return nan("");
    }
    return ret;
}
inline double dec_to_double(const char* str)
{
    double ret=0,negative=1,num_pow=0;
    while('0'<=*str && *str<='9')
        ret=ret*10+(*str++-'0');
    if(!*str) return ret;
    if(*str=='.')
    {
        if(!*++str) return nan("");
        num_pow=0.1;
        while('0'<=*str && *str<='9')
        {
            ret+=num_pow*(*str++-'0');
            num_pow*=0.1;
        }
        if(!*str) return ret;
    }
    if(*str!='e' && *str!='E')
        return nan("");
    if(!*++str) return nan("");
    if(*str=='-' || *str=='+')
        negative=(*str++=='-'? -1:1);
    if(!*str) return nan("");
    num_pow=0;
    for(;*str;++str)
    {
        if('0'<=*str && *str<='9')
            num_pow=num_pow*10+(*str-'0');
        else
            return nan("");
    }
    return ret*std::pow(10,negative*num_pow);
}
double str2num(const char* str)
{
    bool is_negative=false;
    double ret_num=0;
    if(*str=='-' || *str=='+')
        is_negative=(*str++=='-');
    if(!*str)
        return nan("");
    if(str[0]=='0' && str[1]=='x')
        ret_num=hex_to_double(str+2);
    else if(str[0]=='0' && str[1]=='o')
        ret_num=oct_to_double(str+2);
    else
        ret_num=dec_to_double(str);
    return is_negative?-ret_num:ret_num;
}

/*
    show raw string
*/
void raw_string(const std::string& str)
{
    for(auto i:str)
        switch(i)
        {
            case '\a': std::cout<<"\\a";break;
            case '\b': std::cout<<"\\b";break;
            case '\f': std::cout<<"\\f";break;
            case '\n': std::cout<<"\\n";break;
            case '\r': std::cout<<"\\r";break;
            case '\t': std::cout<<"\\t";break;
            case '\v': std::cout<<"\\v";break;
            case '\0': std::cout<<"\\0";break;
            default:   std::cout<<i;    break;
        }
    return;
}
#include "nasal_lexer.h"
#include "nasal_ast.h"
#include "nasal_parse.h"
#include "nasal_import.h"
#include "nasal_gc.h"
#include "nasal_builtin.h"
#include "nasal_codegen.h"
#include "nasal_vm.h"

#endif