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const bun = @import("root").bun;
const std = @import("std");
const string = bun.string;
const Output = bun.Output;
const Global = bun.Global;
const Environment = bun.Environment;
const strings = bun.strings;
const MutableString = bun.MutableString;
const stringZ = bun.stringZ;
const default_allocator = bun.default_allocator;
const C = bun.C;
const StoredFileDescriptorType = bun.StoredFileDescriptorType;
const FeatureFlags = bun.FeatureFlags;
const allocators = @import("../allocators.zig");
const DirInfo = @This();
const Fs = @import("../fs.zig");
const TSConfigJSON = @import("./tsconfig_json.zig").TSConfigJSON;
const PackageJSON = @import("./package_json.zig").PackageJSON;
pub const Index = allocators.IndexType;
// These objects are immutable, so we can just point to the parent directory
// and avoid having to lock the cache again
parent: Index = allocators.NotFound,
// A pointer to the enclosing dirInfo with a valid "browser" field in
// package.json. We need this to remap paths after they have been resolved.
enclosing_browser_scope: Index = allocators.NotFound,
package_json_for_browser_field: ?*const PackageJSON = null,
enclosing_tsconfig_json: ?*const TSConfigJSON = null,
/// package.json used for bundling
/// it's the deepest one in the hierarchy with a "name" field
/// or, if using `bun run`, the name field is optional
/// https://github.com/oven-sh/bun/issues/229
enclosing_package_json: ?*PackageJSON = null,
package_json_for_dependencies: ?*PackageJSON = null,
abs_path: string = "",
entries: Index = undefined,
package_json: ?*PackageJSON = null, // Is there a "package.json" file?
tsconfig_json: ?*TSConfigJSON = null, // Is there a "tsconfig.json" file in this directory or a parent directory?
abs_real_path: string = "", // If non-empty, this is the real absolute path resolving any symlinks
flags: Flags.Set = Flags.Set{},
/// Is there a "node_modules" subdirectory?
pub inline fn hasNodeModules(this: *const DirInfo) bool {
return this.flags.contains(.has_node_modules);
}
/// Is this a "node_modules" directory?
pub inline fn isNodeModules(this: *const DirInfo) bool {
return this.flags.contains(.is_node_modules);
}
pub const Flags = enum {
/// This directory is a node_modules directory
is_node_modules,
/// This directory has a node_modules subdirectory
has_node_modules,
pub const Set = std.enums.EnumSet(Flags);
};
pub fn hasParentPackage(this: *const DirInfo) bool {
const parent = this.getParent() orelse return false;
return !parent.isNodeModules();
}
pub fn getFileDescriptor(dirinfo: *const DirInfo) StoredFileDescriptorType {
if (!FeatureFlags.store_file_descriptors) {
return 0;
}
if (dirinfo.getEntries(0)) |entries| {
return entries.fd;
} else {
return 0;
}
}
pub fn getEntries(dirinfo: *const DirInfo, generation: bun.Generation) ?*Fs.FileSystem.DirEntry {
var entries_ptr = Fs.FileSystem.instance.fs.entriesAt(dirinfo.entries, generation) orelse return null;
switch (entries_ptr.*) {
.entries => {
return entries_ptr.entries;
},
.err => {
return null;
},
}
}
pub fn getEntriesConst(dirinfo: *const DirInfo) ?*const Fs.FileSystem.DirEntry {
const entries_ptr = Fs.FileSystem.instance.fs.entries.atIndex(dirinfo.entries) orelse return null;
switch (entries_ptr.*) {
.entries => {
return entries_ptr.entries;
},
.err => {
return null;
},
}
}
pub fn getParent(i: *const DirInfo) ?*DirInfo {
return HashMap.instance.atIndex(i.parent);
}
pub fn getEnclosingBrowserScope(i: *const DirInfo) ?*DirInfo {
return HashMap.instance.atIndex(i.enclosing_browser_scope);
}
// Goal: Really fast, low allocation directory map exploiting cache locality where we don't worry about lifetimes much.
// 1. Don't store the keys or values of directories that don't exist
// 2. Don't expect a provided key to exist after it's queried
// 3. Store whether a directory has been queried and whether that query was successful.
// 4. Allocate onto the https://en.wikipedia.org/wiki/.bss#BSS_in_C instead of the heap, so we can avoid memory leaks
pub const HashMap = allocators.BSSMap(DirInfo, Fs.Preallocate.Counts.dir_entry, false, 128, true);
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