100 lines
2.9 KiB
Plaintext
100 lines
2.9 KiB
Plaintext
const std = #import("std");
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const Arena = std.Arena;
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const c_slice = std.c_slice;
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const byte_equal = std.byte_equal;
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const print = std.print;
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const exit = std.os.exit;
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const ArgumentProcessingError = error{
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no_arguments,
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};
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const lex = fn () void {
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}
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const get_argument = fn (real_argument: []const u8, wanted_argument: []const u8, command_arguments: []const [&:0]const u8, i_ptr: &usize) ?[]const u8 {
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const i = i_ptr.@;
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const are_equal = byte_equal(real_argument, wanted_argument);
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if (are_equal) {
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if (i < command_arguments.length) {
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const new_i = i + 1;
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const argument = c_slice(command_arguments[new_i]);
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i_ptr.@ = new_i;
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return argument;
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} else {
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print("error: unterminated argument: '");
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print(real_argument);
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print("'\n");
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exit(1);
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}
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} else {
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return null;
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}
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}
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const command_exe = fn (arena: &Arena, command_arguments: []const [&:0]const u8) void {
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var i: usize = 0;
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var maybe_output_argument: ?[]const u8 = null;
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var maybe_main_source_file: ?[]const u8 = null;
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while (i < command_arguments.length) {
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const command_argument = c_slice(command_arguments[i]);
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if (get_argument(command_argument, "-o", command_arguments, i.&)) |out_arg| {
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maybe_output_argument = out_arg;
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} else if (get_argument(command_argument, "-main_source_file", command_arguments, i.&)) |src_arg| {
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maybe_main_source_file = src_arg;
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} else {
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print("error: unhandled argument: '");
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print(command_argument);
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print("'\n");
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exit(1);
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}
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i += 1;
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}
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const main_source_file = maybe_main_source_file orelse {
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print("error: no main source file specified\n");
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exit(1);
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};
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}
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const main = fn() *!void {
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const arena = try Arena.allocate(std.megabytes(64));
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const argument_count = std.start.argument_count;
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if (argument_count <= 1) {
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return ArgumentProcessingError.no_arguments;
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}
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const argument_values = std.start.argument_values;
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const arguments = argument_values[0..argument_count];
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const command = c_slice(arguments[1]);
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const command_arguments = arguments[2..];
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if (byte_equal(command, "build")) {
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print("TODO: build");
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} else if (byte_equal(command, "clang") or byte_equal(command, "-cc1") or byte_equal(command, "-cc1as")) {
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unreachable;
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} else if (byte_equal(command, "cc")) {
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unreachable;
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} else if (byte_equal(command, "c++")) {
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unreachable;
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} else if (byte_equal(command, "exe")) {
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command_exe(arena, command_arguments);
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} else if (byte_equal(command, "lib")) {
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unreachable;
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} else if (byte_equal(command, "obj")) {
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unreachable;
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} else if (byte_equal(command, "test")) {
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print("TODO: test");
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} else {
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unreachable;
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}
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}
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