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type.go
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type.go
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// Copyright (C) 2017 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package protocol
import "fmt"
// Size returns the size in bytes of the type. pointerSize is the size in bytes
// of a pointer for the target architecture.
func (t Type) Size(pointerSize int32) int {
switch t {
case Type_Bool:
return 1
case Type_Int8:
return 1
case Type_Int16:
return 2
case Type_Int32:
return 4
case Type_Int64:
return 8
case Type_Uint8:
return 1
case Type_Uint16:
return 2
case Type_Uint32:
return 4
case Type_Uint64:
return 8
case Type_Float:
return 4
case Type_Double:
return 8
case Type_AbsolutePointer:
return int(pointerSize)
case Type_ConstantPointer:
return int(pointerSize)
case Type_VolatilePointer:
return int(pointerSize)
case Type_Void:
return 0
default:
panic(fmt.Errorf("Unknown ValueType %v", t))
}
}
// Returns the protocol_type needed for a Size member for the given
// pointer width
func SizeType(pointerSize int32) Type {
if pointerSize == 4 {
return Type_Uint32
} else if pointerSize == 8 {
return Type_Uint64
}
panic(fmt.Errorf("Unknown Pointer Width %v", pointerSize))
}