You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
95 lines
2.5 KiB
C++
95 lines
2.5 KiB
C++
/**
|
|
* Alee Forth: A portable and concise Forth implementation in modern C++.
|
|
* Copyright (C) 2023 Clyne Sullivan <clyne@bitgloo.com>
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Lesser General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public License
|
|
* along with this program. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "alee.hpp"
|
|
#include "memdict.hpp"
|
|
|
|
#include <fstream>
|
|
#include <iostream>
|
|
#include <vector>
|
|
|
|
static bool okay = false;
|
|
|
|
static void parseLine(Parser&, State&, std::string_view);
|
|
static void parseFile(Parser&, State&, std::istream&);
|
|
|
|
static void readchar(State& state)
|
|
{
|
|
auto len = state.dict.read(Dictionary::Input);
|
|
Addr addr = Dictionary::Input + sizeof(Cell) +
|
|
Dictionary::InputCells - len - 1;
|
|
|
|
for (Addr i = 0; i < len; ++i, ++addr)
|
|
state.dict.writebyte(addr, state.dict.readbyte(addr + 1));
|
|
|
|
state.dict.writebyte(addr, std::cin.get());
|
|
state.dict.write(Dictionary::Input, len + 1);
|
|
}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
MemDict dict;
|
|
State state (dict, readchar);
|
|
Parser parser;
|
|
|
|
std::vector args (argv + 1, argv + argc);
|
|
for (const auto& a : args) {
|
|
std::ifstream file (a);
|
|
parseFile(parser, state, file);
|
|
}
|
|
|
|
okay = true;
|
|
parseFile(parser, state, std::cin);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void user_sys(State& state)
|
|
{
|
|
switch (state.pop()) {
|
|
case 0:
|
|
std::cout << state.pop() << std::endl;
|
|
break;
|
|
case 1:
|
|
std::cout << static_cast<char>(state.pop()) << std::endl;
|
|
break;
|
|
}
|
|
}
|
|
|
|
void parseLine(Parser& parser, State& state, std::string_view line)
|
|
{
|
|
auto r = parser.parse(state, line);
|
|
|
|
if (r == ParseStatus::Finished) {
|
|
if (okay)
|
|
std::cout << " ok" << std::endl;
|
|
} else {
|
|
std::cout << to_string(r) << ": " << line << std::endl;
|
|
}
|
|
}
|
|
|
|
void parseFile(Parser& parser, State& state, std::istream& file)
|
|
{
|
|
while (file.good()) {
|
|
std::string line;
|
|
std::getline(file, line);
|
|
parseLine(parser, state, line);
|
|
}
|
|
}
|
|
|