mirror of
https://github.com/oven-sh/bun
synced 2026-02-09 10:28:47 +00:00
376 lines
18 KiB
Zig
376 lines
18 KiB
Zig
usingnamespace @import("global.zig");
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usingnamespace @import("./http.zig");
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const std = @import("std");
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const lex = @import("js_lexer.zig");
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const logger = @import("logger.zig");
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const alloc = @import("alloc.zig");
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const options = @import("options.zig");
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const js_parser = @import("js_parser.zig");
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const json_parser = @import("json_parser.zig");
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const js_printer = @import("js_printer.zig");
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const js_ast = @import("js_ast.zig");
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const linker = @import("linker.zig");
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usingnamespace @import("ast/base.zig");
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usingnamespace @import("defines.zig");
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const panicky = @import("panic_handler.zig");
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const Api = @import("api/schema.zig").Api;
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const clap = @import("clap");
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const bundler = @import("bundler.zig");
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pub fn constStrToU8(s: string) []u8 {
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return @intToPtr([*]u8, @ptrToInt(s.ptr))[0..s.len];
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}
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pub const Cli = struct {
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const LoaderMatcher = strings.ExactSizeMatcher(4);
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pub fn ColonListType(comptime t: type, value_resolver: anytype) type {
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return struct {
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pub fn init(allocator: *std.mem.Allocator, count: usize) !@This() {
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var keys = try allocator.alloc(string, count);
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var values = try allocator.alloc(t, count);
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return @This(){ .keys = keys, .values = values };
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}
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keys: []string,
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values: []t,
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pub fn load(self: *@This(), input: []const string) !void {
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for (input) |str, i| {
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// Support either ":" or "=" as the separator, preferring whichever is first.
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// ":" is less confusing IMO because that syntax is used with flags
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// but "=" is what esbuild uses and I want this to be somewhat familiar for people using esbuild
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const midpoint = std.math.min(strings.indexOfChar(str, ':') orelse std.math.maxInt(usize), strings.indexOfChar(str, '=') orelse std.math.maxInt(usize));
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if (midpoint == std.math.maxInt(usize)) {
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return error.InvalidSeparator;
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}
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self.keys[i] = str[0..midpoint];
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self.values[i] = try value_resolver(str[midpoint + 1 .. str.len]);
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}
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}
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pub fn resolve(allocator: *std.mem.Allocator, input: []const string) !@This() {
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var list = try init(allocator, input.len);
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try list.load(input);
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return list;
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}
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};
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}
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pub const LoaderColonList = ColonListType(Api.Loader, Arguments.loader_resolver);
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pub const DefineColonList = ColonListType(string, Arguments.noop_resolver);
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pub const Arguments = struct {
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pub fn loader_resolver(in: string) !Api.Loader {
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const Matcher = strings.ExactSizeMatcher(4);
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switch (Matcher.match(in)) {
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Matcher.case("jsx") => return Api.Loader.jsx,
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Matcher.case("js") => return Api.Loader.js,
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Matcher.case("ts") => return Api.Loader.ts,
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Matcher.case("tsx") => return Api.Loader.tsx,
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Matcher.case("css") => return Api.Loader.css,
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Matcher.case("file") => return Api.Loader.file,
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Matcher.case("json") => return Api.Loader.json,
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else => {
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return error.InvalidLoader;
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},
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}
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}
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pub fn noop_resolver(in: string) !string {
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return in;
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}
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pub fn fileReadError(err: anyerror, stderr: anytype, filename: string, kind: string) noreturn {
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stderr.writer().print("Error reading file \"{s}\" for {s}: {s}", .{ filename, kind, @errorName(err) }) catch {};
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std.process.exit(1);
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}
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pub fn readFile(
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allocator: *std.mem.Allocator,
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cwd: string,
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filename: string,
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) ![]u8 {
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var paths = [_]string{ cwd, filename };
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const outpath = try std.fs.path.resolve(allocator, &paths);
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defer allocator.free(outpath);
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var file = try std.fs.openFileAbsolute(outpath, std.fs.File.OpenFlags{ .read = true, .write = false });
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defer file.close();
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const stats = try file.stat();
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return try file.readToEndAlloc(allocator, stats.size);
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}
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pub fn parse(allocator: *std.mem.Allocator, stdout: anytype, stderr: anytype) !Api.TransformOptions {
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@setEvalBranchQuota(9999);
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const params = comptime [_]clap.Param(clap.Help){
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clap.parseParam("-h, --help Display this help and exit. ") catch unreachable,
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clap.parseParam("-r, --resolve <STR> Determine import/require behavior. \"disable\" ignores. \"dev\" bundles node_modules and builds everything else as independent entry points") catch unreachable,
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clap.parseParam("-d, --define <STR>... Substitute K:V while parsing, e.g. --define process.env.NODE_ENV:development") catch unreachable,
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clap.parseParam("-l, --loader <STR>... Parse files with .ext:loader, e.g. --loader .js:jsx. Valid loaders: jsx, js, json, tsx (not implemented yet), ts (not implemented yet), css (not implemented yet)") catch unreachable,
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clap.parseParam("-o, --outdir <STR> Save output to directory (default: \"out\" if none provided and multiple entry points passed)") catch unreachable,
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clap.parseParam("-e, --external <STR>... Exclude module from transpilation (can use * wildcards). ex: -e react") catch unreachable,
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clap.parseParam("-i, --inject <STR>... Inject module at the top of every file") catch unreachable,
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clap.parseParam("--cwd <STR> Absolute path to resolve entry points from. Defaults to cwd") catch unreachable,
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clap.parseParam("--public-url <STR> Rewrite import paths to start with --public-url. Useful for web browsers.") catch unreachable,
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clap.parseParam("--jsx-factory <STR> Changes the function called when compiling JSX elements using the classic JSX runtime") catch unreachable,
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clap.parseParam("--jsx-fragment <STR> Changes the function called when compiling JSX fragments using the classic JSX runtime") catch unreachable,
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clap.parseParam("--jsx-import-source <STR> Declares the module specifier to be used for importing the jsx and jsxs factory functions. Default: \"react\"") catch unreachable,
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clap.parseParam("--jsx-runtime <STR> \"automatic\" (default) or \"classic\"") catch unreachable,
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clap.parseParam("--jsx-production Use jsx instead of jsxDEV (default) for the automatic runtime") catch unreachable,
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clap.parseParam("--extension-order <STR>... defaults to: .tsx,.ts,.jsx,.js,.json ") catch unreachable,
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clap.parseParam("--react-fast-refresh Enable React Fast Refresh (not implemented yet)") catch unreachable,
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clap.parseParam("--tsconfig-override <STR> Load tsconfig from path instead of cwd/tsconfig.json") catch unreachable,
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clap.parseParam("--platform <STR> \"browser\" or \"node\". Defaults to \"browser\"") catch unreachable,
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clap.parseParam("--main-fields <STR>... Main fields to lookup in package.json. Defaults to --platform dependent") catch unreachable,
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clap.parseParam("<POS>... Entry points to use") catch unreachable,
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};
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var diag = clap.Diagnostic{};
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var args = clap.parse(clap.Help, ¶ms, .{ .diagnostic = &diag }) catch |err| {
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// Report useful error and exit
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diag.report(stderr.writer(), err) catch {};
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return err;
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};
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if (args.flag("--help")) {
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try clap.help(stderr.writer(), ¶ms);
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std.process.exit(1);
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}
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var cwd_paths = [_]string{args.option("--cwd") orelse try std.process.getCwdAlloc(allocator)};
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var cwd = try std.fs.path.resolve(allocator, &cwd_paths);
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var tsconfig_override = if (args.option("--tsconfig-override")) |ts| (Arguments.readFile(allocator, cwd, ts) catch |err| fileReadError(err, stderr, ts, "tsconfig.json")) else null;
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var public_url = args.option("--public-url");
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var defines_tuple = try DefineColonList.resolve(allocator, args.options("--define"));
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var loader_tuple = try LoaderColonList.resolve(allocator, args.options("--define"));
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var define_keys = defines_tuple.keys;
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var define_values = defines_tuple.values;
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var loader_keys = loader_tuple.keys;
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var loader_values = loader_tuple.values;
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var entry_points = args.positionals();
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var inject = args.options("--inject");
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var output_dir = args.option("--outdir");
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var write = entry_points.len > 1 or output_dir != null;
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if (write and output_dir == null) {
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var _paths = [_]string{ cwd, "out" };
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output_dir = try std.fs.path.resolve(allocator, &_paths);
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}
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var externals = std.mem.zeroes([][]u8);
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if (args.options("--external").len > 0) {
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externals = try allocator.alloc([]u8, args.options("--external").len);
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for (args.options("--external")) |external, i| {
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externals[i] = constStrToU8(external);
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}
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}
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var jsx_factory = args.option("--jsx-factory");
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var jsx_fragment = args.option("--jsx-fragment");
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var jsx_import_source = args.option("--jsx-import-source");
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var jsx_runtime = args.option("--jsx-runtime");
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var jsx_production = args.flag("--jsx-production");
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var react_fast_refresh = args.flag("--react-fast-refresh");
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var main_fields = args.options("--main-fields");
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comptime const PlatformMatcher = strings.ExactSizeMatcher(8);
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comptime const ResoveMatcher = strings.ExactSizeMatcher(8);
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var resolve = Api.ResolveMode.lazy;
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if (args.option("--resolve")) |_resolve| {
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switch (PlatformMatcher.match(_resolve)) {
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PlatformMatcher.case("disable") => {
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resolve = Api.ResolveMode.disable;
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},
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PlatformMatcher.case("bundle") => {
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resolve = Api.ResolveMode.bundle;
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},
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PlatformMatcher.case("dev") => {
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resolve = Api.ResolveMode.dev;
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},
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PlatformMatcher.case("lazy") => {
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resolve = Api.ResolveMode.lazy;
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},
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else => {
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diag.name.long = "--resolve";
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diag.arg = _resolve;
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try diag.report(stderr.writer(), error.InvalidResolveOption);
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std.process.exit(1);
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},
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}
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}
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var platform: ?Api.Platform = null;
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if (args.option("--platform")) |_platform| {
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switch (PlatformMatcher.match(_platform)) {
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PlatformMatcher.case("browser") => {
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platform = Api.Platform.browser;
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},
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PlatformMatcher.case("node") => {
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platform = Api.Platform.node;
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},
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else => {
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diag.name.long = "--platform";
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diag.arg = _platform;
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try diag.report(stderr.writer(), error.InvalidPlatform);
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std.process.exit(1);
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},
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}
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}
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var jsx: ?Api.Jsx = null;
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if (jsx_factory != null or
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jsx_fragment != null or
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jsx_import_source != null or
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jsx_runtime != null or
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jsx_production or react_fast_refresh)
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{
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var default_factory = "".*;
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var default_fragment = "".*;
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var default_import_source = "".*;
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jsx = Api.Jsx{
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.factory = constStrToU8(jsx_factory orelse &default_factory),
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.fragment = constStrToU8(jsx_fragment orelse &default_fragment),
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.import_source = constStrToU8(jsx_import_source orelse &default_import_source),
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.runtime = if (jsx_runtime != null) try resolve_jsx_runtime(jsx_runtime.?) else Api.JsxRuntime.automatic,
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.development = !jsx_production,
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.react_fast_refresh = react_fast_refresh,
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};
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}
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if (entry_points.len == 0) {
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try clap.help(stderr.writer(), ¶ms);
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try diag.report(stderr.writer(), error.MissingEntryPoint);
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std.process.exit(1);
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}
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return Api.TransformOptions{
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.jsx = jsx,
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.output_dir = output_dir,
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.resolve = resolve,
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.external = externals,
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.absolute_working_dir = cwd,
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.tsconfig_override = tsconfig_override,
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.public_url = public_url,
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.define_keys = define_keys,
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.define_values = define_values,
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.loader_keys = loader_keys,
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.loader_values = loader_values,
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.write = write,
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.inject = inject,
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.entry_points = entry_points,
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.extension_order = args.options("--extension-order"),
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.main_fields = args.options("--main-fields"),
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.platform = platform,
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};
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}
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};
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pub fn resolve_jsx_runtime(str: string) !Api.JsxRuntime {
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if (strings.eql(str, "automatic")) {
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return Api.JsxRuntime.automatic;
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} else if (strings.eql(str, "fallback")) {
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return Api.JsxRuntime.classic;
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} else {
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return error.InvalidJSXRuntime;
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}
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}
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pub fn startTransform(allocator: *std.mem.Allocator, args: Api.TransformOptions, log: *logger.Log) anyerror!void {}
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pub fn start(allocator: *std.mem.Allocator, stdout: anytype, stderr: anytype, comptime MainPanicHandler: type) anyerror!void {
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const start_time = std.time.nanoTimestamp();
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var log = logger.Log.init(allocator);
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var panicker = MainPanicHandler.init(&log);
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MainPanicHandler.Singleton = &panicker;
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var args = try Arguments.parse(alloc.static, stdout, stderr);
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try Server.start(allocator, &args);
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var result: options.TransformResult = undefined;
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switch (args.resolve orelse Api.ResolveMode.dev) {
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Api.ResolveMode.disable => {
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result = try bundler.Transformer.transform(
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allocator,
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&log,
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args,
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);
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},
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else => {
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result = try bundler.Bundler.bundle(
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allocator,
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&log,
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args,
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);
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},
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}
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var did_write = false;
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var writer = stdout.writer();
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if (args.write) |write| {
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if (write) {
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did_write = true;
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var root_dir = try std.fs.openDirAbsolute(args.absolute_working_dir.?, std.fs.Dir.OpenDirOptions{});
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defer root_dir.close();
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for (result.output_files) |f| {
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try root_dir.makePath(std.fs.path.dirname(f.path) orelse unreachable);
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var _handle = try std.fs.createFileAbsolute(f.path, std.fs.File.CreateFlags{
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.truncate = true,
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});
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try _handle.seekTo(0);
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defer _handle.close();
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try _handle.writeAll(f.contents);
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}
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var max_path_len: usize = 0;
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var max_padded_size: usize = 0;
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for (result.output_files) |file| {
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max_path_len = std.math.max(file.path.len, max_path_len);
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}
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_ = try writer.write("\n");
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for (result.output_files) |file| {
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const padding_count = 2 + (max_path_len - file.path.len);
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try writer.writeByteNTimes(' ', 2);
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try writer.writeAll(file.path);
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try writer.writeByteNTimes(' ', padding_count);
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const size = @intToFloat(f64, file.contents.len) / 1000.0;
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try std.fmt.formatFloatDecimal(size, .{ .precision = 2 }, writer);
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try writer.writeAll(" KB\n");
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}
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}
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}
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if (!did_write) {
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for (result.output_files) |file, i| {
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try writer.writeAll(file.contents);
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if (i > 0) {
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_ = try writer.write("\n\n");
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}
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}
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}
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var err_writer = stderr.writer();
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for (result.errors) |err| {
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try err.writeFormat(err_writer);
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_ = try err_writer.write("\n");
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}
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for (result.warnings) |err| {
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try err.writeFormat(err_writer);
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_ = try err_writer.write("\n");
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}
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const duration = std.time.nanoTimestamp() - start_time;
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if (did_write and duration < @as(i128, @as(i128, std.time.ns_per_s) * @as(i128, 2))) {
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var elapsed = @divFloor(duration, @as(i128, std.time.ns_per_ms));
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try writer.print("\nCompleted in {d}ms", .{elapsed});
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}
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}
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};
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