zig/src-self-hosted/type.zig
2019-03-24 00:44:18 -04:00

1117 lines
39 KiB
Zig

const std = @import("std");
const builtin = @import("builtin");
const Scope = @import("scope.zig").Scope;
const Compilation = @import("compilation.zig").Compilation;
const Value = @import("value.zig").Value;
const llvm = @import("llvm.zig");
const event = std.event;
const Allocator = std.mem.Allocator;
const assert = std.debug.assert;
pub const Type = struct {
base: Value,
id: Id,
name: []const u8,
abi_alignment: AbiAlignment,
pub const AbiAlignment = event.Future(error{OutOfMemory}!u32);
pub const Id = builtin.TypeId;
pub fn destroy(base: *Type, comp: *Compilation) void {
switch (base.id) {
Id.Struct => @fieldParentPtr(Struct, "base", base).destroy(comp),
Id.Fn => @fieldParentPtr(Fn, "base", base).destroy(comp),
Id.Type => @fieldParentPtr(MetaType, "base", base).destroy(comp),
Id.Void => @fieldParentPtr(Void, "base", base).destroy(comp),
Id.Bool => @fieldParentPtr(Bool, "base", base).destroy(comp),
Id.NoReturn => @fieldParentPtr(NoReturn, "base", base).destroy(comp),
Id.Int => @fieldParentPtr(Int, "base", base).destroy(comp),
Id.Float => @fieldParentPtr(Float, "base", base).destroy(comp),
Id.Pointer => @fieldParentPtr(Pointer, "base", base).destroy(comp),
Id.Array => @fieldParentPtr(Array, "base", base).destroy(comp),
Id.ComptimeFloat => @fieldParentPtr(ComptimeFloat, "base", base).destroy(comp),
Id.ComptimeInt => @fieldParentPtr(ComptimeInt, "base", base).destroy(comp),
Id.EnumLiteral => @fieldParentPtr(EnumLiteral, "base", base).destroy(comp),
Id.Undefined => @fieldParentPtr(Undefined, "base", base).destroy(comp),
Id.Null => @fieldParentPtr(Null, "base", base).destroy(comp),
Id.Optional => @fieldParentPtr(Optional, "base", base).destroy(comp),
Id.ErrorUnion => @fieldParentPtr(ErrorUnion, "base", base).destroy(comp),
Id.ErrorSet => @fieldParentPtr(ErrorSet, "base", base).destroy(comp),
Id.Enum => @fieldParentPtr(Enum, "base", base).destroy(comp),
Id.Union => @fieldParentPtr(Union, "base", base).destroy(comp),
Id.BoundFn => @fieldParentPtr(BoundFn, "base", base).destroy(comp),
Id.ArgTuple => @fieldParentPtr(ArgTuple, "base", base).destroy(comp),
Id.Opaque => @fieldParentPtr(Opaque, "base", base).destroy(comp),
Id.Promise => @fieldParentPtr(Promise, "base", base).destroy(comp),
Id.Vector => @fieldParentPtr(Vector, "base", base).destroy(comp),
}
}
pub fn getLlvmType(
base: *Type,
allocator: *Allocator,
llvm_context: *llvm.Context,
) (error{OutOfMemory}!*llvm.Type) {
switch (base.id) {
Id.Struct => return @fieldParentPtr(Struct, "base", base).getLlvmType(allocator, llvm_context),
Id.Fn => return @fieldParentPtr(Fn, "base", base).getLlvmType(allocator, llvm_context),
Id.Type => unreachable,
Id.Void => unreachable,
Id.Bool => return @fieldParentPtr(Bool, "base", base).getLlvmType(allocator, llvm_context),
Id.NoReturn => unreachable,
Id.Int => return @fieldParentPtr(Int, "base", base).getLlvmType(allocator, llvm_context),
Id.Float => return @fieldParentPtr(Float, "base", base).getLlvmType(allocator, llvm_context),
Id.Pointer => return @fieldParentPtr(Pointer, "base", base).getLlvmType(allocator, llvm_context),
Id.Array => return @fieldParentPtr(Array, "base", base).getLlvmType(allocator, llvm_context),
Id.ComptimeFloat => unreachable,
Id.ComptimeInt => unreachable,
Id.EnumLiteral => unreachable,
Id.Undefined => unreachable,
Id.Null => unreachable,
Id.Optional => return @fieldParentPtr(Optional, "base", base).getLlvmType(allocator, llvm_context),
Id.ErrorUnion => return @fieldParentPtr(ErrorUnion, "base", base).getLlvmType(allocator, llvm_context),
Id.ErrorSet => return @fieldParentPtr(ErrorSet, "base", base).getLlvmType(allocator, llvm_context),
Id.Enum => return @fieldParentPtr(Enum, "base", base).getLlvmType(allocator, llvm_context),
Id.Union => return @fieldParentPtr(Union, "base", base).getLlvmType(allocator, llvm_context),
Id.BoundFn => return @fieldParentPtr(BoundFn, "base", base).getLlvmType(allocator, llvm_context),
Id.ArgTuple => unreachable,
Id.Opaque => return @fieldParentPtr(Opaque, "base", base).getLlvmType(allocator, llvm_context),
Id.Promise => return @fieldParentPtr(Promise, "base", base).getLlvmType(allocator, llvm_context),
Id.Vector => return @fieldParentPtr(Vector, "base", base).getLlvmType(allocator, llvm_context),
}
}
pub fn handleIsPtr(base: *Type) bool {
switch (base.id) {
Id.Type,
Id.ComptimeFloat,
Id.ComptimeInt,
Id.EnumLiteral,
Id.Undefined,
Id.Null,
Id.BoundFn,
Id.ArgTuple,
Id.Opaque,
=> unreachable,
Id.NoReturn,
Id.Void,
Id.Bool,
Id.Int,
Id.Float,
Id.Pointer,
Id.ErrorSet,
Id.Enum,
Id.Fn,
Id.Promise,
Id.Vector,
=> return false,
Id.Struct => @panic("TODO"),
Id.Array => @panic("TODO"),
Id.Optional => @panic("TODO"),
Id.ErrorUnion => @panic("TODO"),
Id.Union => @panic("TODO"),
}
}
pub fn hasBits(base: *Type) bool {
switch (base.id) {
Id.Type,
Id.ComptimeFloat,
Id.ComptimeInt,
Id.EnumLiteral,
Id.Undefined,
Id.Null,
Id.BoundFn,
Id.ArgTuple,
Id.Opaque,
=> unreachable,
Id.Void,
Id.NoReturn,
=> return false,
Id.Bool,
Id.Int,
Id.Float,
Id.Fn,
Id.Promise,
Id.Vector,
=> return true,
Id.Pointer => {
const ptr_type = @fieldParentPtr(Pointer, "base", base);
return ptr_type.key.child_type.hasBits();
},
Id.ErrorSet => @panic("TODO"),
Id.Enum => @panic("TODO"),
Id.Struct => @panic("TODO"),
Id.Array => @panic("TODO"),
Id.Optional => @panic("TODO"),
Id.ErrorUnion => @panic("TODO"),
Id.Union => @panic("TODO"),
}
}
pub fn cast(base: *Type, comptime T: type) ?*T {
if (base.id != @field(Id, @typeName(T))) return null;
return @fieldParentPtr(T, "base", base);
}
pub fn dump(base: *const Type) void {
std.debug.warn("{}", @tagName(base.id));
}
fn init(base: *Type, comp: *Compilation, id: Id, name: []const u8) void {
base.* = Type{
.base = Value{
.id = Value.Id.Type,
.typ = &MetaType.get(comp).base,
.ref_count = std.atomic.Int(usize).init(1),
},
.id = id,
.name = name,
.abi_alignment = AbiAlignment.init(comp.loop),
};
}
/// If you happen to have an llvm context handy, use getAbiAlignmentInContext instead.
/// Otherwise, this one will grab one from the pool and then release it.
pub async fn getAbiAlignment(base: *Type, comp: *Compilation) !u32 {
if (await (async base.abi_alignment.start() catch unreachable)) |ptr| return ptr.*;
{
const held = try comp.zig_compiler.getAnyLlvmContext();
defer held.release(comp.zig_compiler);
const llvm_context = held.node.data;
base.abi_alignment.data = await (async base.resolveAbiAlignment(comp, llvm_context) catch unreachable);
}
base.abi_alignment.resolve();
return base.abi_alignment.data;
}
/// If you have an llvm conext handy, you can use it here.
pub async fn getAbiAlignmentInContext(base: *Type, comp: *Compilation, llvm_context: *llvm.Context) !u32 {
if (await (async base.abi_alignment.start() catch unreachable)) |ptr| return ptr.*;
base.abi_alignment.data = await (async base.resolveAbiAlignment(comp, llvm_context) catch unreachable);
base.abi_alignment.resolve();
return base.abi_alignment.data;
}
/// Lower level function that does the work. See getAbiAlignment.
async fn resolveAbiAlignment(base: *Type, comp: *Compilation, llvm_context: *llvm.Context) !u32 {
const llvm_type = try base.getLlvmType(comp.gpa(), llvm_context);
return @intCast(u32, llvm.ABIAlignmentOfType(comp.target_data_ref, llvm_type));
}
pub const Struct = struct {
base: Type,
decls: *Scope.Decls,
pub fn destroy(self: *Struct, comp: *Compilation) void {
comp.gpa().destroy(self);
}
pub fn getLlvmType(self: *Struct, allocator: *Allocator, llvm_context: *llvm.Context) *llvm.Type {
@panic("TODO");
}
};
pub const Fn = struct {
base: Type,
key: Key,
non_key: NonKey,
garbage_node: std.atomic.Stack(*Fn).Node,
pub const Kind = enum {
Normal,
Generic,
};
pub const NonKey = union {
Normal: Normal,
Generic: void,
pub const Normal = struct {
variable_list: std.ArrayList(*Scope.Var),
};
};
pub const Key = struct {
data: Data,
alignment: ?u32,
pub const Data = union(Kind) {
Generic: Generic,
Normal: Normal,
};
pub const Normal = struct {
params: []Param,
return_type: *Type,
is_var_args: bool,
cc: CallingConvention,
};
pub const Generic = struct {
param_count: usize,
cc: CC,
pub const CC = union(CallingConvention) {
Auto,
C,
Cold,
Naked,
Stdcall,
Async: *Type, // allocator type
};
};
pub fn hash(self: *const Key) u32 {
var result: u32 = 0;
result +%= hashAny(self.alignment, 0);
switch (self.data) {
Kind.Generic => |generic| {
result +%= hashAny(generic.param_count, 1);
switch (generic.cc) {
CallingConvention.Async => |allocator_type| result +%= hashAny(allocator_type, 2),
else => result +%= hashAny(CallingConvention(generic.cc), 3),
}
},
Kind.Normal => |normal| {
result +%= hashAny(normal.return_type, 4);
result +%= hashAny(normal.is_var_args, 5);
result +%= hashAny(normal.cc, 6);
for (normal.params) |param| {
result +%= hashAny(param.is_noalias, 7);
result +%= hashAny(param.typ, 8);
}
},
}
return result;
}
pub fn eql(self: *const Key, other: *const Key) bool {
if ((self.alignment == null) != (other.alignment == null)) return false;
if (self.alignment) |self_align| {
if (self_align != other.alignment.?) return false;
}
if (@TagType(Data)(self.data) != @TagType(Data)(other.data)) return false;
switch (self.data) {
Kind.Generic => |*self_generic| {
const other_generic = &other.data.Generic;
if (self_generic.param_count != other_generic.param_count) return false;
if (CallingConvention(self_generic.cc) != CallingConvention(other_generic.cc)) return false;
switch (self_generic.cc) {
CallingConvention.Async => |self_allocator_type| {
const other_allocator_type = other_generic.cc.Async;
if (self_allocator_type != other_allocator_type) return false;
},
else => {},
}
},
Kind.Normal => |*self_normal| {
const other_normal = &other.data.Normal;
if (self_normal.cc != other_normal.cc) return false;
if (self_normal.is_var_args != other_normal.is_var_args) return false;
if (self_normal.return_type != other_normal.return_type) return false;
for (self_normal.params) |*self_param, i| {
const other_param = &other_normal.params[i];
if (self_param.is_noalias != other_param.is_noalias) return false;
if (self_param.typ != other_param.typ) return false;
}
},
}
return true;
}
pub fn deref(key: Key, comp: *Compilation) void {
switch (key.data) {
Kind.Generic => |generic| {
switch (generic.cc) {
CallingConvention.Async => |allocator_type| allocator_type.base.deref(comp),
else => {},
}
},
Kind.Normal => |normal| {
normal.return_type.base.deref(comp);
for (normal.params) |param| {
param.typ.base.deref(comp);
}
},
}
}
pub fn ref(key: Key) void {
switch (key.data) {
Kind.Generic => |generic| {
switch (generic.cc) {
CallingConvention.Async => |allocator_type| allocator_type.base.ref(),
else => {},
}
},
Kind.Normal => |normal| {
normal.return_type.base.ref();
for (normal.params) |param| {
param.typ.base.ref();
}
},
}
}
};
pub const CallingConvention = enum {
Auto,
C,
Cold,
Naked,
Stdcall,
Async,
};
pub const Param = struct {
is_noalias: bool,
typ: *Type,
};
fn ccFnTypeStr(cc: CallingConvention) []const u8 {
return switch (cc) {
CallingConvention.Auto => "",
CallingConvention.C => "extern ",
CallingConvention.Cold => "coldcc ",
CallingConvention.Naked => "nakedcc ",
CallingConvention.Stdcall => "stdcallcc ",
CallingConvention.Async => unreachable,
};
}
pub fn paramCount(self: *Fn) usize {
return switch (self.key.data) {
Kind.Generic => |generic| generic.param_count,
Kind.Normal => |normal| normal.params.len,
};
}
/// takes ownership of key.Normal.params on success
pub async fn get(comp: *Compilation, key: Key) !*Fn {
{
const held = await (async comp.fn_type_table.acquire() catch unreachable);
defer held.release();
if (held.value.get(&key)) |entry| {
entry.value.base.base.ref();
return entry.value;
}
}
key.ref();
errdefer key.deref(comp);
const self = try comp.gpa().create(Fn);
self.* = Fn{
.base = undefined,
.key = key,
.non_key = undefined,
.garbage_node = undefined,
};
errdefer comp.gpa().destroy(self);
var name_buf = try std.Buffer.initSize(comp.gpa(), 0);
defer name_buf.deinit();
const name_stream = &std.io.BufferOutStream.init(&name_buf).stream;
switch (key.data) {
Kind.Generic => |generic| {
self.non_key = NonKey{ .Generic = {} };
switch (generic.cc) {
CallingConvention.Async => |async_allocator_type| {
try name_stream.print("async<{}> ", async_allocator_type.name);
},
else => {
const cc_str = ccFnTypeStr(generic.cc);
try name_stream.write(cc_str);
},
}
try name_stream.write("fn(");
var param_i: usize = 0;
while (param_i < generic.param_count) : (param_i += 1) {
const arg = if (param_i == 0) "var" else ", var";
try name_stream.write(arg);
}
try name_stream.write(")");
if (key.alignment) |alignment| {
try name_stream.print(" align<{}>", alignment);
}
try name_stream.write(" var");
},
Kind.Normal => |normal| {
self.non_key = NonKey{
.Normal = NonKey.Normal{ .variable_list = std.ArrayList(*Scope.Var).init(comp.gpa()) },
};
const cc_str = ccFnTypeStr(normal.cc);
try name_stream.print("{}fn(", cc_str);
for (normal.params) |param, i| {
if (i != 0) try name_stream.write(", ");
if (param.is_noalias) try name_stream.write("noalias ");
try name_stream.write(param.typ.name);
}
if (normal.is_var_args) {
if (normal.params.len != 0) try name_stream.write(", ");
try name_stream.write("...");
}
try name_stream.write(")");
if (key.alignment) |alignment| {
try name_stream.print(" align<{}>", alignment);
}
try name_stream.print(" {}", normal.return_type.name);
},
}
self.base.init(comp, Id.Fn, name_buf.toOwnedSlice());
{
const held = await (async comp.fn_type_table.acquire() catch unreachable);
defer held.release();
_ = try held.value.put(&self.key, self);
}
return self;
}
pub fn destroy(self: *Fn, comp: *Compilation) void {
self.key.deref(comp);
switch (self.key.data) {
Kind.Generic => {},
Kind.Normal => {
self.non_key.Normal.variable_list.deinit();
},
}
comp.gpa().destroy(self);
}
pub fn getLlvmType(self: *Fn, allocator: *Allocator, llvm_context: *llvm.Context) !*llvm.Type {
const normal = &self.key.data.Normal;
const llvm_return_type = switch (normal.return_type.id) {
Type.Id.Void => llvm.VoidTypeInContext(llvm_context) orelse return error.OutOfMemory,
else => try normal.return_type.getLlvmType(allocator, llvm_context),
};
const llvm_param_types = try allocator.alloc(*llvm.Type, normal.params.len);
defer allocator.free(llvm_param_types);
for (llvm_param_types) |*llvm_param_type, i| {
llvm_param_type.* = try normal.params[i].typ.getLlvmType(allocator, llvm_context);
}
return llvm.FunctionType(
llvm_return_type,
llvm_param_types.ptr,
@intCast(c_uint, llvm_param_types.len),
@boolToInt(normal.is_var_args),
) orelse error.OutOfMemory;
}
};
pub const MetaType = struct {
base: Type,
value: *Type,
/// Adds 1 reference to the resulting type
pub fn get(comp: *Compilation) *MetaType {
comp.meta_type.base.base.ref();
return comp.meta_type;
}
pub fn destroy(self: *MetaType, comp: *Compilation) void {
comp.gpa().destroy(self);
}
};
pub const Void = struct {
base: Type,
/// Adds 1 reference to the resulting type
pub fn get(comp: *Compilation) *Void {
comp.void_type.base.base.ref();
return comp.void_type;
}
pub fn destroy(self: *Void, comp: *Compilation) void {
comp.gpa().destroy(self);
}
};
pub const Bool = struct {
base: Type,
/// Adds 1 reference to the resulting type
pub fn get(comp: *Compilation) *Bool {
comp.bool_type.base.base.ref();
return comp.bool_type;
}
pub fn destroy(self: *Bool, comp: *Compilation) void {
comp.gpa().destroy(self);
}
pub fn getLlvmType(self: *Bool, allocator: *Allocator, llvm_context: *llvm.Context) *llvm.Type {
@panic("TODO");
}
};
pub const NoReturn = struct {
base: Type,
/// Adds 1 reference to the resulting type
pub fn get(comp: *Compilation) *NoReturn {
comp.noreturn_type.base.base.ref();
return comp.noreturn_type;
}
pub fn destroy(self: *NoReturn, comp: *Compilation) void {
comp.gpa().destroy(self);
}
};
pub const Int = struct {
base: Type,
key: Key,
garbage_node: std.atomic.Stack(*Int).Node,
pub const Key = struct {
bit_count: u32,
is_signed: bool,
pub fn hash(self: *const Key) u32 {
var result: u32 = 0;
result +%= hashAny(self.is_signed, 0);
result +%= hashAny(self.bit_count, 1);
return result;
}
pub fn eql(self: *const Key, other: *const Key) bool {
return self.bit_count == other.bit_count and self.is_signed == other.is_signed;
}
};
pub fn get_u8(comp: *Compilation) *Int {
comp.u8_type.base.base.ref();
return comp.u8_type;
}
pub async fn get(comp: *Compilation, key: Key) !*Int {
{
const held = await (async comp.int_type_table.acquire() catch unreachable);
defer held.release();
if (held.value.get(&key)) |entry| {
entry.value.base.base.ref();
return entry.value;
}
}
const self = try comp.gpa().create(Int);
self.* = Int{
.base = undefined,
.key = key,
.garbage_node = undefined,
};
errdefer comp.gpa().destroy(self);
const u_or_i = "ui"[@boolToInt(key.is_signed)];
const name = try std.fmt.allocPrint(comp.gpa(), "{c}{}", u_or_i, key.bit_count);
errdefer comp.gpa().free(name);
self.base.init(comp, Id.Int, name);
{
const held = await (async comp.int_type_table.acquire() catch unreachable);
defer held.release();
_ = try held.value.put(&self.key, self);
}
return self;
}
pub fn destroy(self: *Int, comp: *Compilation) void {
self.garbage_node = std.atomic.Stack(*Int).Node{
.data = self,
.next = undefined,
};
comp.registerGarbage(Int, &self.garbage_node);
}
pub async fn gcDestroy(self: *Int, comp: *Compilation) void {
{
const held = await (async comp.int_type_table.acquire() catch unreachable);
defer held.release();
_ = held.value.remove(&self.key).?;
}
// we allocated the name
comp.gpa().free(self.base.name);
comp.gpa().destroy(self);
}
pub fn getLlvmType(self: *Int, allocator: *Allocator, llvm_context: *llvm.Context) !*llvm.Type {
return llvm.IntTypeInContext(llvm_context, self.key.bit_count) orelse return error.OutOfMemory;
}
};
pub const Float = struct {
base: Type,
pub fn destroy(self: *Float, comp: *Compilation) void {
comp.gpa().destroy(self);
}
pub fn getLlvmType(self: *Float, allocator: *Allocator, llvm_context: *llvm.Context) *llvm.Type {
@panic("TODO");
}
};
pub const Pointer = struct {
base: Type,
key: Key,
garbage_node: std.atomic.Stack(*Pointer).Node,
pub const Key = struct {
child_type: *Type,
mut: Mut,
vol: Vol,
size: Size,
alignment: Align,
pub fn hash(self: *const Key) u32 {
var result: u32 = 0;
result +%= switch (self.alignment) {
Align.Abi => 0xf201c090,
Align.Override => |x| hashAny(x, 0),
};
result +%= hashAny(self.child_type, 1);
result +%= hashAny(self.mut, 2);
result +%= hashAny(self.vol, 3);
result +%= hashAny(self.size, 4);
return result;
}
pub fn eql(self: *const Key, other: *const Key) bool {
if (self.child_type != other.child_type or
self.mut != other.mut or
self.vol != other.vol or
self.size != other.size or
@TagType(Align)(self.alignment) != @TagType(Align)(other.alignment))
{
return false;
}
switch (self.alignment) {
Align.Abi => return true,
Align.Override => |x| return x == other.alignment.Override,
}
}
};
pub const Mut = enum {
Mut,
Const,
};
pub const Vol = enum {
Non,
Volatile,
};
pub const Align = union(enum) {
Abi,
Override: u32,
};
pub const Size = builtin.TypeInfo.Pointer.Size;
pub fn destroy(self: *Pointer, comp: *Compilation) void {
self.garbage_node = std.atomic.Stack(*Pointer).Node{
.data = self,
.next = undefined,
};
comp.registerGarbage(Pointer, &self.garbage_node);
}
pub async fn gcDestroy(self: *Pointer, comp: *Compilation) void {
{
const held = await (async comp.ptr_type_table.acquire() catch unreachable);
defer held.release();
_ = held.value.remove(&self.key).?;
}
self.key.child_type.base.deref(comp);
comp.gpa().destroy(self);
}
pub async fn getAlignAsInt(self: *Pointer, comp: *Compilation) u32 {
switch (self.key.alignment) {
Align.Abi => return await (async self.key.child_type.getAbiAlignment(comp) catch unreachable),
Align.Override => |alignment| return alignment,
}
}
pub async fn get(
comp: *Compilation,
key: Key,
) !*Pointer {
var normal_key = key;
switch (key.alignment) {
Align.Abi => {},
Align.Override => |alignment| {
const abi_align = try await (async key.child_type.getAbiAlignment(comp) catch unreachable);
if (abi_align == alignment) {
normal_key.alignment = Align.Abi;
}
},
}
{
const held = await (async comp.ptr_type_table.acquire() catch unreachable);
defer held.release();
if (held.value.get(&normal_key)) |entry| {
entry.value.base.base.ref();
return entry.value;
}
}
const self = try comp.gpa().create(Pointer);
self.* = Pointer{
.base = undefined,
.key = normal_key,
.garbage_node = undefined,
};
errdefer comp.gpa().destroy(self);
const size_str = switch (self.key.size) {
Size.One => "*",
Size.Many => "[*]",
Size.Slice => "[]",
Size.C => "[*c]",
};
const mut_str = switch (self.key.mut) {
Mut.Const => "const ",
Mut.Mut => "",
};
const vol_str = switch (self.key.vol) {
Vol.Volatile => "volatile ",
Vol.Non => "",
};
const name = switch (self.key.alignment) {
Align.Abi => try std.fmt.allocPrint(
comp.gpa(),
"{}{}{}{}",
size_str,
mut_str,
vol_str,
self.key.child_type.name,
),
Align.Override => |alignment| try std.fmt.allocPrint(
comp.gpa(),
"{}align<{}> {}{}{}",
size_str,
alignment,
mut_str,
vol_str,
self.key.child_type.name,
),
};
errdefer comp.gpa().free(name);
self.base.init(comp, Id.Pointer, name);
{
const held = await (async comp.ptr_type_table.acquire() catch unreachable);
defer held.release();
_ = try held.value.put(&self.key, self);
}
return self;
}
pub fn getLlvmType(self: *Pointer, allocator: *Allocator, llvm_context: *llvm.Context) !*llvm.Type {
const elem_llvm_type = try self.key.child_type.getLlvmType(allocator, llvm_context);
return llvm.PointerType(elem_llvm_type, 0) orelse return error.OutOfMemory;
}
};
pub const Array = struct {
base: Type,
key: Key,
garbage_node: std.atomic.Stack(*Array).Node,
pub const Key = struct {
elem_type: *Type,
len: usize,
pub fn hash(self: *const Key) u32 {
var result: u32 = 0;
result +%= hashAny(self.elem_type, 0);
result +%= hashAny(self.len, 1);
return result;
}
pub fn eql(self: *const Key, other: *const Key) bool {
return self.elem_type == other.elem_type and self.len == other.len;
}
};
pub fn destroy(self: *Array, comp: *Compilation) void {
self.key.elem_type.base.deref(comp);
comp.gpa().destroy(self);
}
pub async fn get(comp: *Compilation, key: Key) !*Array {
key.elem_type.base.ref();
errdefer key.elem_type.base.deref(comp);
{
const held = await (async comp.array_type_table.acquire() catch unreachable);
defer held.release();
if (held.value.get(&key)) |entry| {
entry.value.base.base.ref();
return entry.value;
}
}
const self = try comp.gpa().create(Array);
self.* = Array{
.base = undefined,
.key = key,
.garbage_node = undefined,
};
errdefer comp.gpa().destroy(self);
const name = try std.fmt.allocPrint(comp.gpa(), "[{}]{}", key.len, key.elem_type.name);
errdefer comp.gpa().free(name);
self.base.init(comp, Id.Array, name);
{
const held = await (async comp.array_type_table.acquire() catch unreachable);
defer held.release();
_ = try held.value.put(&self.key, self);
}
return self;
}
pub fn getLlvmType(self: *Array, allocator: *Allocator, llvm_context: *llvm.Context) !*llvm.Type {
const elem_llvm_type = try self.key.elem_type.getLlvmType(allocator, llvm_context);
return llvm.ArrayType(elem_llvm_type, @intCast(c_uint, self.key.len)) orelse return error.OutOfMemory;
}
};
pub const Vector = struct {
base: Type,
pub fn destroy(self: *Vector, comp: *Compilation) void {
comp.gpa().destroy(self);
}
pub fn getLlvmType(self: *Vector, allocator: *Allocator, llvm_context: *llvm.Context) *llvm.Type {
@panic("TODO");
}
};
pub const ComptimeFloat = struct {
base: Type,
pub fn destroy(self: *ComptimeFloat, comp: *Compilation) void {
comp.gpa().destroy(self);
}
};
pub const ComptimeInt = struct {
base: Type,
/// Adds 1 reference to the resulting type
pub fn get(comp: *Compilation) *ComptimeInt {
comp.comptime_int_type.base.base.ref();
return comp.comptime_int_type;
}
pub fn destroy(self: *ComptimeInt, comp: *Compilation) void {
comp.gpa().destroy(self);
}
};
pub const EnumLiteral = struct {
base: Type,
/// Adds 1 reference to the resulting type
pub fn get(comp: *Compilation) *EnumLiteral {
comp.comptime_int_type.base.base.ref();
return comp.comptime_int_type;
}
pub fn destroy(self: *EnumLiteral, comp: *Compilation) void {
comp.gpa().destroy(self);
}
};
pub const Undefined = struct {
base: Type,
pub fn destroy(self: *Undefined, comp: *Compilation) void {
comp.gpa().destroy(self);
}
};
pub const Null = struct {
base: Type,
pub fn destroy(self: *Null, comp: *Compilation) void {
comp.gpa().destroy(self);
}
};
pub const Optional = struct {
base: Type,
pub fn destroy(self: *Optional, comp: *Compilation) void {
comp.gpa().destroy(self);
}
pub fn getLlvmType(self: *Optional, allocator: *Allocator, llvm_context: *llvm.Context) *llvm.Type {
@panic("TODO");
}
};
pub const ErrorUnion = struct {
base: Type,
pub fn destroy(self: *ErrorUnion, comp: *Compilation) void {
comp.gpa().destroy(self);
}
pub fn getLlvmType(self: *ErrorUnion, allocator: *Allocator, llvm_context: *llvm.Context) *llvm.Type {
@panic("TODO");
}
};
pub const ErrorSet = struct {
base: Type,
pub fn destroy(self: *ErrorSet, comp: *Compilation) void {
comp.gpa().destroy(self);
}
pub fn getLlvmType(self: *ErrorSet, allocator: *Allocator, llvm_context: *llvm.Context) *llvm.Type {
@panic("TODO");
}
};
pub const Enum = struct {
base: Type,
pub fn destroy(self: *Enum, comp: *Compilation) void {
comp.gpa().destroy(self);
}
pub fn getLlvmType(self: *Enum, allocator: *Allocator, llvm_context: *llvm.Context) *llvm.Type {
@panic("TODO");
}
};
pub const Union = struct {
base: Type,
pub fn destroy(self: *Union, comp: *Compilation) void {
comp.gpa().destroy(self);
}
pub fn getLlvmType(self: *Union, allocator: *Allocator, llvm_context: *llvm.Context) *llvm.Type {
@panic("TODO");
}
};
pub const BoundFn = struct {
base: Type,
pub fn destroy(self: *BoundFn, comp: *Compilation) void {
comp.gpa().destroy(self);
}
pub fn getLlvmType(self: *BoundFn, allocator: *Allocator, llvm_context: *llvm.Context) *llvm.Type {
@panic("TODO");
}
};
pub const ArgTuple = struct {
base: Type,
pub fn destroy(self: *ArgTuple, comp: *Compilation) void {
comp.gpa().destroy(self);
}
};
pub const Opaque = struct {
base: Type,
pub fn destroy(self: *Opaque, comp: *Compilation) void {
comp.gpa().destroy(self);
}
pub fn getLlvmType(self: *Opaque, allocator: *Allocator, llvm_context: *llvm.Context) *llvm.Type {
@panic("TODO");
}
};
pub const Promise = struct {
base: Type,
pub fn destroy(self: *Promise, comp: *Compilation) void {
comp.gpa().destroy(self);
}
pub fn getLlvmType(self: *Promise, allocator: *Allocator, llvm_context: *llvm.Context) *llvm.Type {
@panic("TODO");
}
};
};
fn hashAny(x: var, comptime seed: u64) u32 {
switch (@typeInfo(@typeOf(x))) {
builtin.TypeId.Int => |info| {
comptime var rng = comptime std.rand.DefaultPrng.init(seed);
const unsigned_x = @bitCast(@IntType(false, info.bits), x);
if (info.bits <= 32) {
return u32(unsigned_x) *% comptime rng.random.scalar(u32);
} else {
return @truncate(u32, unsigned_x *% comptime rng.random.scalar(@typeOf(unsigned_x)));
}
},
builtin.TypeId.Pointer => |info| {
switch (info.size) {
builtin.TypeInfo.Pointer.Size.One => return hashAny(@ptrToInt(x), seed),
builtin.TypeInfo.Pointer.Size.Many => @compileError("implement hash function"),
builtin.TypeInfo.Pointer.Size.Slice => @compileError("implement hash function"),
builtin.TypeInfo.Pointer.Size.C => unreachable,
}
},
builtin.TypeId.Enum => return hashAny(@enumToInt(x), seed),
builtin.TypeId.Bool => {
comptime var rng = comptime std.rand.DefaultPrng.init(seed);
const vals = comptime [2]u32{ rng.random.scalar(u32), rng.random.scalar(u32) };
return vals[@boolToInt(x)];
},
builtin.TypeId.Optional => {
if (x) |non_opt| {
return hashAny(non_opt, seed);
} else {
return hashAny(u32(1), seed);
}
},
else => @compileError("implement hash function for " ++ @typeName(@typeOf(x))),
}
}