Add multi pointers to core

core/encoding/json/marshal.odin

@@ -139,6 +139,9 @@ marshal_arg :: proc(b: ^strings.Builder, v: any) -> Marshal_Error {
 	case runtime.Type_Info_Pointer:
 		return .Unsupported_Type;
 
+	case runtime.Type_Info_Multi_Pointer:
+		return .Unsupported_Type;
+
 	case runtime.Type_Info_Procedure:
 		return .Unsupported_Type;
 

core/fmt/fmt.odin

@@ -1574,6 +1574,48 @@ fmt_value :: proc(fi: ^Info, v: any, verb: rune) {
 			fmt_pointer(fi, ptr, verb);
 		}
 
+	case runtime.Type_Info_Multi_Pointer:
+		ptr := (^rawptr)(v.data)^;
+		if verb != 'p' && info.elem != nil {
+			a := any{ptr, info.elem.id};
+
+			elem := runtime.type_info_base(info.elem);
+			if elem != nil {
+				#partial switch e in elem.variant {
+				case runtime.Type_Info_Array,
+				     runtime.Type_Info_Slice,
+				     runtime.Type_Info_Dynamic_Array,
+				     runtime.Type_Info_Map:
+					if ptr == nil {
+						io.write_string(fi.writer, "<nil>");
+						return;
+					}
+					if fi.record_level < 1 {
+					  	fi.record_level += 1;
+						defer fi.record_level -= 1;
+						io.write_byte(fi.writer, '&');
+						fmt_value(fi, a, verb);
+						return;
+					}
+
+				case runtime.Type_Info_Struct,
+				     runtime.Type_Info_Union:
+					if ptr == nil {
+						io.write_string(fi.writer, "<nil>");
+						return;
+					}
+					if fi.record_level < 1 {
+						fi.record_level += 1;
+						defer fi.record_level -= 1;
+						io.write_byte(fi.writer, '&');
+						fmt_value(fi, a, verb);
+						return;
+					}
+				}
+			}
+		}
+		fmt_pointer(fi, ptr, verb);
+
 	case runtime.Type_Info_Array:
 		if (verb == 's' || verb == 'q') && reflect.is_byte(info.elem) {
 			s := strings.string_from_ptr((^byte)(v.data), info.count);

core/reflect/reflect.odin

@@ -18,6 +18,7 @@ Type_Info_Boolean          :: runtime.Type_Info_Boolean;
 Type_Info_Any              :: runtime.Type_Info_Any;
 Type_Info_Type_Id          :: runtime.Type_Info_Type_Id;
 Type_Info_Pointer          :: runtime.Type_Info_Pointer;
+Type_Info_Multi_Pointer    :: runtime.Type_Info_Multi_Pointer;
 Type_Info_Procedure        :: runtime.Type_Info_Procedure;
 Type_Info_Array            :: runtime.Type_Info_Array;
 Type_Info_Enumerated_Array :: runtime.Type_Info_Enumerated_Array;
@@ -50,6 +51,7 @@ Type_Kind :: enum {
 	Any,
 	Type_Id,
 	Pointer,
+	Multi_Pointer,
 	Procedure,
 	Array,
 	Enumerated_Array,
@@ -82,6 +84,7 @@ type_kind :: proc(T: typeid) -> Type_Kind {
 		case Type_Info_Any:              return .Any;
 		case Type_Info_Type_Id:          return .Type_Id;
 		case Type_Info_Pointer:          return .Pointer;
+		case Type_Info_Multi_Pointer:    return .Multi_Pointer;
 		case Type_Info_Procedure:        return .Procedure;
 		case Type_Info_Array:            return .Array;
 		case Type_Info_Enumerated_Array: return .Enumerated_Array;
@@ -172,6 +175,7 @@ typeid_elem :: proc(id: typeid) -> typeid {
 		case 256: return f64;
 		}
 	case Type_Info_Pointer:          return v.elem.id;
+	case Type_Info_Multi_Pointer:    return v.elem.id;
 	case Type_Info_Array:            return v.elem.id;
 	case Type_Info_Enumerated_Array: return v.elem.id;
 	case Type_Info_Slice:            return v.elem.id;
@@ -298,6 +302,13 @@ index :: proc(val: any, i: int, loc := #caller_location) -> any {
 		}
 		return index({ptr, a.elem.id}, i, loc);
 
+	case Type_Info_Multi_Pointer:
+		ptr := (^rawptr)(val.data)^;
+		if ptr == nil {
+			return nil;
+		}
+		return index({ptr, a.elem.id}, i, loc);
+
 	case Type_Info_Array:
 		runtime.bounds_check_error_loc(loc, i, a.count);
 		offset := uintptr(a.elem.size * i);

core/reflect/types.odin

@@ -21,13 +21,11 @@ are_types_identical :: proc(a, b: ^Type_Info) -> bool {
 
 	switch x in a.variant {
 	case Type_Info_Named:
-		y, ok := b.variant.(Type_Info_Named);
-		if !ok { return false; }
+		y := b.variant.(Type_Info_Named) or_return;
 		return x.base == y.base;
 
 	case Type_Info_Integer:
-		y, ok := b.variant.(Type_Info_Integer);
-		if !ok { return false; }
+		y := b.variant.(Type_Info_Integer) or_return;
 		return x.signed == y.signed && x.endianness == y.endianness;
 
 	case Type_Info_Rune:
@@ -63,13 +61,15 @@ are_types_identical :: proc(a, b: ^Type_Info) -> bool {
 		return ok;
 
 	case Type_Info_Pointer:
-		y, ok := b.variant.(Type_Info_Pointer);
-		if !ok { return false; }
+		y := b.variant.(Type_Info_Pointer) or_return;
+		return are_types_identical(x.elem, y.elem);
+
+	case Type_Info_Multi_Pointer:
+		y := b.variant.(Type_Info_Multi_Pointer) or_return;
 		return are_types_identical(x.elem, y.elem);
 
 	case Type_Info_Procedure:
-		y, ok := b.variant.(Type_Info_Procedure);
-		if !ok { return false; }
+		y := b.variant.(Type_Info_Procedure) or_return;
 		switch {
 		case x.variadic   != y.variadic,
 		     x.convention != y.convention:
@@ -79,31 +79,26 @@ are_types_identical :: proc(a, b: ^Type_Info) -> bool {
 		return are_types_identical(x.params, y.params) && are_types_identical(x.results, y.results);
 
 	case Type_Info_Array:
-		y, ok := b.variant.(Type_Info_Array);
-		if !ok { return false; }
+		y := b.variant.(Type_Info_Array) or_return;
 		if x.count != y.count { return false; }
 		return are_types_identical(x.elem, y.elem);
 
 	case Type_Info_Enumerated_Array:
-		y, ok := b.variant.(Type_Info_Enumerated_Array);
-		if !ok { return false; }
+		y := b.variant.(Type_Info_Enumerated_Array) or_return;
 		if x.count != y.count { return false; }
 		return are_types_identical(x.index, y.index) &&
 		       are_types_identical(x.elem, y.elem);
 
 	case Type_Info_Dynamic_Array:
-		y, ok := b.variant.(Type_Info_Dynamic_Array);
-		if !ok { return false; }
+		y := b.variant.(Type_Info_Dynamic_Array) or_return;
 		return are_types_identical(x.elem, y.elem);
 
 	case Type_Info_Slice:
-		y, ok := b.variant.(Type_Info_Slice);
-		if !ok { return false; }
+		y := b.variant.(Type_Info_Slice) or_return;
 		return are_types_identical(x.elem, y.elem);
 
 	case Type_Info_Tuple:
-		y, ok := b.variant.(Type_Info_Tuple);
-		if !ok { return false; }
+		y := b.variant.(Type_Info_Tuple) or_return;
 		if len(x.types) != len(y.types) { return false; }
 		for _, i in x.types {
 			xt, yt := x.types[i], y.types[i];
@@ -114,8 +109,7 @@ are_types_identical :: proc(a, b: ^Type_Info) -> bool {
 		return true;
 
 	case Type_Info_Struct:
-		y, ok := b.variant.(Type_Info_Struct);
-		if !ok { return false; }
+		y := b.variant.(Type_Info_Struct) or_return;
 	   	switch {
 		case len(x.types)    != len(y.types),
 		     x.is_packed     != y.is_packed,
@@ -138,8 +132,7 @@ are_types_identical :: proc(a, b: ^Type_Info) -> bool {
 		return true;
 
 	case Type_Info_Union:
-		y, ok := b.variant.(Type_Info_Union);
-		if !ok { return false; }
+		y := b.variant.(Type_Info_Union) or_return;
 		if len(x.variants) != len(y.variants) { return false; }
 
 		for _, i in x.variants {
@@ -153,28 +146,23 @@ are_types_identical :: proc(a, b: ^Type_Info) -> bool {
 		return false;
 
 	case Type_Info_Map:
-		y, ok := b.variant.(Type_Info_Map);
-		if !ok { return false; }
+		y := b.variant.(Type_Info_Map) or_return;
 		return are_types_identical(x.key, y.key) && are_types_identical(x.value, y.value);
 
 	case Type_Info_Bit_Set:
-		y, ok := b.variant.(Type_Info_Bit_Set);
-		if !ok { return false; }
+		y := b.variant.(Type_Info_Bit_Set) or_return;
 		return x.elem == y.elem && x.lower == y.lower && x.upper == y.upper;
 
 	case Type_Info_Simd_Vector:
-		y, ok := b.variant.(Type_Info_Simd_Vector);
-		if !ok { return false; }
+		y := b.variant.(Type_Info_Simd_Vector) or_return;
 		return x.count == y.count && x.elem == y.elem;
 
 	case Type_Info_Relative_Pointer:
-		y, ok := b.variant.(Type_Info_Relative_Pointer);
-		if !ok { return false; }
+		y := b.variant.(Type_Info_Relative_Pointer) or_return;
 		return x.base_integer == y.base_integer && x.pointer == y.pointer;
 
 	case Type_Info_Relative_Slice:
-		y, ok := b.variant.(Type_Info_Relative_Slice);
-		if !ok { return false; }
+		y := b.variant.(Type_Info_Relative_Slice) or_return;
 		return x.base_integer == y.base_integer && x.slice == y.slice;
 	}
 
@@ -257,6 +245,11 @@ is_pointer :: proc(info: ^Type_Info) -> bool {
 	_, ok := type_info_base(info).variant.(Type_Info_Pointer);
 	return ok;
 }
+is_multi_pointer :: proc(info: ^Type_Info) -> bool {
+	if info == nil { return false; }
+	_, ok := type_info_base(info).variant.(Type_Info_Multi_Pointer);
+	return ok;
+}
 is_procedure :: proc(info: ^Type_Info) -> bool {
 	if info == nil { return false; }
 	_, ok := type_info_base(info).variant.(Type_Info_Procedure);
@@ -424,6 +417,9 @@ write_type_writer :: proc(w: io.Writer, ti: ^Type_Info) -> (n: int) {
 			write_string(w, "^");
 			write_type(w, info.elem);
 		}
+	case Type_Info_Multi_Pointer:
+		write_string(w, "[^]");
+		write_type(w, info.elem);
 	case Type_Info_Procedure:
 		n += write_string(w, "proc");
 		if info.params == nil {

core/runtime/core.odin

@@ -74,6 +74,9 @@ Type_Info_Type_Id    :: struct {};
 Type_Info_Pointer :: struct {
 	elem: ^Type_Info, // nil -> rawptr
 };
+Type_Info_Multi_Pointer :: struct {
+	elem: ^Type_Info,
+};
 Type_Info_Procedure :: struct {
 	params:     ^Type_Info, // Type_Info_Tuple
 	results:    ^Type_Info, // Type_Info_Tuple
@@ -184,6 +187,7 @@ Type_Info :: struct {
 		Type_Info_Any,
 		Type_Info_Type_Id,
 		Type_Info_Pointer,
+		Type_Info_Multi_Pointer,
 		Type_Info_Procedure,
 		Type_Info_Array,
 		Type_Info_Enumerated_Array,
@@ -214,6 +218,7 @@ Typeid_Kind :: enum u8 {
 	Any,
 	Type_Id,
 	Pointer,
+	Multi_Pointer,
 	Procedure,
 	Array,
 	Enumerated_Array,
@@ -340,7 +345,7 @@ Context :: struct {
 
 
 Raw_String :: struct {
-	data: ^byte,
+	data: [^]byte,
 	len:  int,
 }
 

core/runtime/error_checks.odin

@@ -45,6 +45,24 @@ slice_handle_error :: proc "contextless" (file: string, line, column: i32, lo, h
 	bounds_trap();
 }
 
+multi_pointer_slice_handle_error :: proc "contextless" (file: string, line, column: i32, lo, hi: int) -> ! {
+	print_caller_location(Source_Code_Location{file, line, column, ""});
+	print_string(" Invalid slice indices: ");
+	print_i64(i64(lo));
+	print_string(":");
+	print_i64(i64(hi));
+	print_byte('\n');
+	bounds_trap();
+}
+
+
+multi_pointer_slice_expr_error :: proc "contextless" (file: string, line, column: i32, lo, hi: int) {
+	if lo <= hi {
+		return;
+	}
+	multi_pointer_slice_handle_error(file, line, column, lo, hi);
+}
+
 slice_expr_error_hi :: proc "contextless" (file: string, line, column: i32, hi: int, len: int) {
 	if 0 <= hi && hi <= len {
 		return;

core/runtime/print.odin

@@ -203,6 +203,9 @@ print_type :: proc "contextless" (ti: ^Type_Info) {
 			print_string("^");
 			print_type(info.elem);
 		}
+	case Type_Info_Multi_Pointer:
+		print_string("[^]");
+		print_type(info.elem);
 	case Type_Info_Procedure:
 		print_string("proc");
 		if info.params == nil {