129 lines
3.6 KiB
Zig
129 lines
3.6 KiB
Zig
const std = @import("std");
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const Allocator = std.mem.Allocator;
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// const Scanner = @import("scanner.zig").Scanner;
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const chunk = @import("chunk.zig");
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const vm = @import("vm.zig");
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const InterpretResult = vm.InterpretResult;
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//const Compiler = @import("compiler.zig").Compiler;
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pub var hadError = false;
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fn run(allocator: *Allocator, data: []u8) !void {
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var stdout_file = try std.io.getStdOut();
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const stdout = &stdout_file.outStream().stream;
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var vmach = try vm.VM.init(allocator, stdout, true);
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defer vmach.deinit();
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try vmach.interpret(data);
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}
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fn runWithVM(vmach: *vm.VM, data: []u8) !void {
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var stdout_file = try std.io.getStdOut();
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const stdout = &stdout_file.outStream().stream;
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defer vmach.deinit();
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try vmach.interpret(data);
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}
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pub fn doError(line: usize, message: []const u8) !void {
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try errorReport(line, "", message);
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}
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pub fn errorReport(line: usize, where: []const u8, message: []const u8) !void {
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var stdout_file = try std.io.getStdOut();
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const stdout = &stdout_file.outStream().stream;
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try stdout.print("[line {}] Error {}: {}\n", line, where, message);
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hadError = true;
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}
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fn runFile(allocator: *Allocator, path: []const u8) !void {
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var lox_file = try std.fs.File.openRead(path);
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defer lox_file.close();
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const total_bytes = try lox_file.getEndPos();
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var slice = try allocator.alloc(u8, total_bytes);
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_ = try lox_file.read(slice);
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run(allocator, slice) catch |err| {
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switch (err) {
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InterpretResult.Ok => {},
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InterpretResult.CompileError => std.os.exit(65),
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InterpretResult.RuntimeError => std.os.exit(70),
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else => return err,
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}
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};
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}
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fn runPrompt(allocator: *Allocator) !void {
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var stdout_file = try std.io.getStdOut();
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const stdout = &stdout_file.outStream().stream;
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var vmach = try vm.VM.init(allocator, stdout, true);
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defer vmach.deinit();
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while (true) {
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try stdout.print(">");
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var buffer = try std.Buffer.init(allocator, ""[0..]);
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var line = std.io.readLine(&buffer) catch |err| {
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if (err == error.EndOfStream) return;
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return err;
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};
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runWithVM(&vmach, line) catch |err| {
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switch (err) {
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InterpretResult.Ok => {},
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InterpretResult.CompileError => blk: {
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try stdout.print("compile error.\n");
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},
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InterpretResult.RuntimeError => blk: {
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try stdout.print("runtime error.\n");
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},
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else => return err,
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}
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};
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vmach.resetStack();
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}
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}
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pub fn main() anyerror!void {
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var arena = std.heap.ArenaAllocator.init(std.heap.direct_allocator);
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defer arena.deinit();
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var allocator = &arena.allocator;
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var args_it = std.process.args();
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var jorts_arg0 = try (args_it.next(allocator) orelse {
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// if you ever reach this, tell me what is your os lmao
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unreachable;
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});
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var lox_path = try (args_it.next(allocator) orelse {
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try runPrompt(allocator);
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return;
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});
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try runFile(allocator, lox_path);
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}
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pub fn oldMain() !void {
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var arena = std.heap.ArenaAllocator.init(std.heap.direct_allocator);
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defer arena.deinit();
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var allocator = &arena.allocator;
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var stdout_file = try std.io.getStdOut();
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var stdout = &stdout_file.outStream().stream;
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// this crashes zig??? lol
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// var chk = try chunk.Chunk.init(allocator);
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//var opcode_byte: u8 = @enumToInt(chunk.OpCode.Return);
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//try chk.write(chunk.OpCode.Return);
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}
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