runtime: panic any custometype

internal/runtime/z_error.go

@@ -16,6 +16,13 @@
 
 package runtime
 
+import (
+	"unsafe"
+
+	"github.com/goplus/llgo/c/bitcast"
+	"github.com/goplus/llgo/internal/abi"
+)
+
 type errorString string
 
 func (e errorString) RuntimeError() {}
@@ -41,3 +48,99 @@ func AssertIndexRange(b bool) {
 		panic(errorString("index out of range").Error())
 	}
 }
+
+// printany prints an argument passed to panic.
+// If panic is called with a value that has a String or Error method,
+// it has already been converted into a string by preprintpanics.
+func printany(i any) {
+	switch v := i.(type) {
+	case nil:
+		print("nil")
+	case bool:
+		print(v)
+	case int:
+		print(v)
+	case int8:
+		print(v)
+	case int16:
+		print(v)
+	case int32:
+		print(v)
+	case int64:
+		print(v)
+	case uint:
+		print(v)
+	case uint8:
+		print(v)
+	case uint16:
+		print(v)
+	case uint32:
+		print(v)
+	case uint64:
+		print(v)
+	case uintptr:
+		print(v)
+	case float32:
+		print(v)
+	case float64:
+		print(v)
+	case complex64:
+		print(v)
+	case complex128:
+		print(v)
+	case string:
+		print(v)
+	default:
+		printanycustomtype(i)
+	}
+}
+
+func efaceOf(ep *any) *eface {
+	return (*eface)(unsafe.Pointer(ep))
+}
+
+func printanycustomtype(i any) {
+	e := efaceOf(&i)
+	typestring := e._type.String()
+
+	switch e._type.Kind() {
+	case abi.String:
+		print(typestring, `("`, *(*string)(e.data), `")`)
+	case abi.Bool:
+		if isDirectIface(e._type) {
+			print(typestring, "(", uintptr(e.data) != 0, ")")
+		} else {
+			print(typestring, "(", *(*bool)(e.data), ")")
+		}
+	case abi.Int, abi.Int8, abi.Int16, abi.Int32, abi.Int64:
+		if isDirectIface(e._type) {
+			print(typestring, "(", int64(uintptr(e.data)), ")")
+		} else {
+			print(typestring, "(", *(*int64)(e.data), ")")
+		}
+	case abi.Uint, abi.Uint8, abi.Uint16, abi.Uint32, abi.Uint64, abi.Uintptr:
+		if isDirectIface(e._type) {
+			print(typestring, "(", uint64(uintptr(e.data)), ")")
+		} else {
+			print(typestring, "(", *(*uint64)(e.data), ")")
+		}
+	case abi.Float32:
+		if isDirectIface(e._type) {
+			print(typestring, "(", bitcast.ToFloat32((uintptr(e.data))), ")")
+		} else {
+			print(typestring, "(", *(*float32)(e.data), ")")
+		}
+	case abi.Float64:
+		if isDirectIface(e._type) {
+			print(typestring, "(", bitcast.ToFloat64(uintptr(e.data)), ")")
+		} else {
+			print(typestring, "(", *(*float64)(e.data), ")")
+		}
+	case abi.Complex64:
+		println(typestring, *(*complex64)(e.data))
+	case abi.Complex128:
+		println(typestring, *(*complex128)(e.data))
+	default:
+		print("(", typestring, ") ", e.data)
+	}
+}