mirror of
https://github.com/oven-sh/bun
synced 2026-02-13 20:39:05 +00:00
e45f72e8e4
* Update bundler.zig * WIP * Update README.md * Update README.md * wip * Support running scripts without package.json * Add `--no-auto-install` and `--prefer-offline` flags * WIP * wip * Update headers-handwritten.h * WIP * Build fixes * Fix UAF * Update install.zig * Must call .allocate() * Micro-optimization: only call .timestamp() once per tick when installing packages * Support progress bar * Extend the timestamp for package staleness checks to 1 day * Add `--prefer-latest`, `-i` CLI Flags * Fix crash * Support line text manually being set on an Error instance * Add a few more fields for error messages * Fix bug when counting 8 character strings in string builder * Implement error handling for automatic package installs! * Fix crash * Make it say module when there's a slash * Update module_loader.zig * Ban dependency versions in import specifiers when a package.json is present * Remove unused field * Update README.md * Update README.md * Update README.md * Update README.md Co-authored-by: Jarred Sumner <709451+Jarred-Sumner@users.noreply.github.com>
87 lines
2.5 KiB
Zig
87 lines
2.5 KiB
Zig
const string = @import("string_types.zig").string;
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const Allocator = @import("std").mem.Allocator;
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const assert = @import("std").debug.assert;
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const copy = @import("std").mem.copy;
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const Env = @import("./env.zig");
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const bun = @import("./global.zig");
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const StringBuilder = @This();
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const DebugHashTable = if (Env.allow_assert) std.AutoHashMapUnmanaged(u64, void) else void;
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len: usize = 0,
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cap: usize = 0,
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ptr: ?[*]u8 = null,
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debug_only_checker: DebugHashTable = DebugHashTable{},
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pub fn count(this: *StringBuilder, slice: string) void {
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this.cap += slice.len;
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if (comptime Env.allow_assert) {
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_ = this.debug_only_checker.getOrPut(bun.default_allocator, bun.hash(slice)) catch unreachable;
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}
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}
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pub fn allocate(this: *StringBuilder, allocator: Allocator) !void {
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var slice = try allocator.alloc(u8, this.cap);
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this.ptr = slice.ptr;
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this.len = 0;
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}
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pub fn deinit(this: *StringBuilder, allocator: Allocator) void {
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if (this.ptr == null or this.cap == 0) return;
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allocator.free(this.ptr.?[0..this.cap]);
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if (comptime Env.allow_assert) {
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this.debug_only_checker.deinit(bun.default_allocator);
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this.debug_only_checker = .{};
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}
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}
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pub fn append(this: *StringBuilder, slice: string) string {
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if (comptime Env.allow_assert) {
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assert(this.len <= this.cap); // didn't count everything
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assert(this.ptr != null); // must call allocate first
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}
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if (comptime Env.allow_assert) {
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assert(this.debug_only_checker.contains(bun.hash(slice)));
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}
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bun.copy(u8, this.ptr.?[this.len..this.cap], slice);
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const result = this.ptr.?[this.len..this.cap][0..slice.len];
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this.len += slice.len;
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if (Env.allow_assert) {
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assert(this.len <= this.cap);
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}
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return result;
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}
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const std = @import("std");
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pub fn fmt(this: *StringBuilder, comptime str: string, args: anytype) string {
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if (Env.allow_assert) {
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assert(this.len <= this.cap); // didn't count everything
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assert(this.ptr != null); // must call allocate first
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}
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var buf = this.ptr.?[this.len..this.cap];
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const out = std.fmt.bufPrint(buf, str, args) catch unreachable;
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this.len += out.len;
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if (Env.allow_assert) {
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assert(this.len <= this.cap);
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}
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return out;
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}
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pub fn fmtCount(this: *StringBuilder, comptime str: string, args: anytype) void {
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this.cap += std.fmt.count(str, args);
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}
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pub fn allocatedSlice(this: *StringBuilder) []u8 {
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var ptr = this.ptr orelse return &[_]u8{};
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std.debug.assert(this.cap > 0);
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std.debug.assert(this.len > 0);
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return ptr[0..this.cap];
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}
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