diff options
Diffstat (limited to 'src-self-hosted/value.zig')
| -rw-r--r-- | src-self-hosted/value.zig | 124 |
1 files changed, 117 insertions, 7 deletions
diff --git a/src-self-hosted/value.zig b/src-self-hosted/value.zig index 5660cd760f..fc5854c40f 100644 --- a/src-self-hosted/value.zig +++ b/src-self-hosted/value.zig @@ -49,6 +49,7 @@ pub const Value = extern union { null_type, undefined_type, fn_noreturn_no_args_type, + fn_void_no_args_type, fn_naked_noreturn_no_args_type, fn_ccc_void_no_args_type, single_const_pointer_to_comptime_int_type, @@ -78,8 +79,8 @@ pub const Value = extern union { pub const no_payload_count = @enumToInt(last_no_payload_tag) + 1; }; - pub fn initTag(comptime small_tag: Tag) Value { - comptime assert(@enumToInt(small_tag) < Tag.no_payload_count); + pub fn initTag(small_tag: Tag) Value { + assert(@enumToInt(small_tag) < Tag.no_payload_count); return .{ .tag_if_small_enough = @enumToInt(small_tag) }; } @@ -107,6 +108,109 @@ pub const Value = extern union { return @fieldParentPtr(T, "base", self.ptr_otherwise); } + pub fn copy(self: Value, allocator: *Allocator) error{OutOfMemory}!Value { + if (self.tag_if_small_enough < Tag.no_payload_count) { + return Value{ .tag_if_small_enough = self.tag_if_small_enough }; + } else switch (self.ptr_otherwise.tag) { + .u8_type, + .i8_type, + .isize_type, + .usize_type, + .c_short_type, + .c_ushort_type, + .c_int_type, + .c_uint_type, + .c_long_type, + .c_ulong_type, + .c_longlong_type, + .c_ulonglong_type, + .c_longdouble_type, + .f16_type, + .f32_type, + .f64_type, + .f128_type, + .c_void_type, + .bool_type, + .void_type, + .type_type, + .anyerror_type, + .comptime_int_type, + .comptime_float_type, + .noreturn_type, + .null_type, + .undefined_type, + .fn_noreturn_no_args_type, + .fn_void_no_args_type, + .fn_naked_noreturn_no_args_type, + .fn_ccc_void_no_args_type, + .single_const_pointer_to_comptime_int_type, + .const_slice_u8_type, + .undef, + .zero, + .the_one_possible_value, + .null_value, + .bool_true, + .bool_false, + => unreachable, + + .ty => { + const payload = @fieldParentPtr(Payload.Ty, "base", self.ptr_otherwise); + const new_payload = try allocator.create(Payload.Ty); + new_payload.* = .{ + .base = payload.base, + .ty = try payload.ty.copy(allocator), + }; + return Value{ .ptr_otherwise = &new_payload.base }; + }, + .int_u64 => return self.copyPayloadShallow(allocator, Payload.Int_u64), + .int_i64 => return self.copyPayloadShallow(allocator, Payload.Int_i64), + .int_big_positive => { + @panic("TODO implement copying of big ints"); + }, + .int_big_negative => { + @panic("TODO implement copying of big ints"); + }, + .function => return self.copyPayloadShallow(allocator, Payload.Function), + .ref_val => { + const payload = @fieldParentPtr(Payload.RefVal, "base", self.ptr_otherwise); + const new_payload = try allocator.create(Payload.RefVal); + new_payload.* = .{ + .base = payload.base, + .val = try payload.val.copy(allocator), + }; + return Value{ .ptr_otherwise = &new_payload.base }; + }, + .decl_ref => return self.copyPayloadShallow(allocator, Payload.DeclRef), + .elem_ptr => { + const payload = @fieldParentPtr(Payload.ElemPtr, "base", self.ptr_otherwise); + const new_payload = try allocator.create(Payload.ElemPtr); + new_payload.* = .{ + .base = payload.base, + .array_ptr = try payload.array_ptr.copy(allocator), + .index = payload.index, + }; + return Value{ .ptr_otherwise = &new_payload.base }; + }, + .bytes => return self.copyPayloadShallow(allocator, Payload.Bytes), + .repeated => { + const payload = @fieldParentPtr(Payload.Repeated, "base", self.ptr_otherwise); + const new_payload = try allocator.create(Payload.Repeated); + new_payload.* = .{ + .base = payload.base, + .val = try payload.val.copy(allocator), + }; + return Value{ .ptr_otherwise = &new_payload.base }; + }, + } + } + + fn copyPayloadShallow(self: Value, allocator: *Allocator, comptime T: type) error{OutOfMemory}!Value { + const payload = @fieldParentPtr(T, "base", self.ptr_otherwise); + const new_payload = try allocator.create(T); + new_payload.* = payload.*; + return Value{ .ptr_otherwise = &new_payload.base }; + } + pub fn format( self: Value, comptime fmt: []const u8, @@ -144,6 +248,7 @@ pub const Value = extern union { .null_type => return out_stream.writeAll("@TypeOf(null)"), .undefined_type => return out_stream.writeAll("@TypeOf(undefined)"), .fn_noreturn_no_args_type => return out_stream.writeAll("fn() noreturn"), + .fn_void_no_args_type => return out_stream.writeAll("fn() void"), .fn_naked_noreturn_no_args_type => return out_stream.writeAll("fn() callconv(.Naked) noreturn"), .fn_ccc_void_no_args_type => return out_stream.writeAll("fn() callconv(.C) void"), .single_const_pointer_to_comptime_int_type => return out_stream.writeAll("*const comptime_int"), @@ -229,6 +334,7 @@ pub const Value = extern union { .null_type => Type.initTag(.@"null"), .undefined_type => Type.initTag(.@"undefined"), .fn_noreturn_no_args_type => Type.initTag(.fn_noreturn_no_args), + .fn_void_no_args_type => Type.initTag(.fn_void_no_args), .fn_naked_noreturn_no_args_type => Type.initTag(.fn_naked_noreturn_no_args), .fn_ccc_void_no_args_type => Type.initTag(.fn_ccc_void_no_args), .single_const_pointer_to_comptime_int_type => Type.initTag(.single_const_pointer_to_comptime_int), @@ -286,6 +392,7 @@ pub const Value = extern union { .null_type, .undefined_type, .fn_noreturn_no_args_type, + .fn_void_no_args_type, .fn_naked_noreturn_no_args_type, .fn_ccc_void_no_args_type, .single_const_pointer_to_comptime_int_type, @@ -345,6 +452,7 @@ pub const Value = extern union { .null_type, .undefined_type, .fn_noreturn_no_args_type, + .fn_void_no_args_type, .fn_naked_noreturn_no_args_type, .fn_ccc_void_no_args_type, .single_const_pointer_to_comptime_int_type, @@ -405,6 +513,7 @@ pub const Value = extern union { .null_type, .undefined_type, .fn_noreturn_no_args_type, + .fn_void_no_args_type, .fn_naked_noreturn_no_args_type, .fn_ccc_void_no_args_type, .single_const_pointer_to_comptime_int_type, @@ -470,6 +579,7 @@ pub const Value = extern union { .null_type, .undefined_type, .fn_noreturn_no_args_type, + .fn_void_no_args_type, .fn_naked_noreturn_no_args_type, .fn_ccc_void_no_args_type, .single_const_pointer_to_comptime_int_type, @@ -564,6 +674,7 @@ pub const Value = extern union { .null_type, .undefined_type, .fn_noreturn_no_args_type, + .fn_void_no_args_type, .fn_naked_noreturn_no_args_type, .fn_ccc_void_no_args_type, .single_const_pointer_to_comptime_int_type, @@ -620,6 +731,7 @@ pub const Value = extern union { .null_type, .undefined_type, .fn_noreturn_no_args_type, + .fn_void_no_args_type, .fn_naked_noreturn_no_args_type, .fn_ccc_void_no_args_type, .single_const_pointer_to_comptime_int_type, @@ -721,6 +833,7 @@ pub const Value = extern union { .null_type, .undefined_type, .fn_noreturn_no_args_type, + .fn_void_no_args_type, .fn_naked_noreturn_no_args_type, .fn_ccc_void_no_args_type, .single_const_pointer_to_comptime_int_type, @@ -783,6 +896,7 @@ pub const Value = extern union { .null_type, .undefined_type, .fn_noreturn_no_args_type, + .fn_void_no_args_type, .fn_naked_noreturn_no_args_type, .fn_ccc_void_no_args_type, .single_const_pointer_to_comptime_int_type, @@ -862,6 +976,7 @@ pub const Value = extern union { .null_type, .undefined_type, .fn_noreturn_no_args_type, + .fn_void_no_args_type, .fn_naked_noreturn_no_args_type, .fn_ccc_void_no_args_type, .single_const_pointer_to_comptime_int_type, @@ -929,11 +1044,6 @@ pub const Value = extern union { len: u64, }; - pub const SingleConstPtrType = struct { - base: Payload = Payload{ .tag = .single_const_ptr_type }, - elem_type: *Type, - }; - /// Represents a pointer to another immutable value. pub const RefVal = struct { base: Payload = Payload{ .tag = .ref_val }, |