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// Copyright (c) 2016, the R8 project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
package com.android.tools.r8.ir.code;
import com.android.tools.r8.errors.InternalCompilerError;
import com.android.tools.r8.errors.Unreachable;
import com.android.tools.r8.graph.DexType;
public enum MemberType {
OBJECT,
BOOLEAN_OR_BYTE,
CHAR,
SHORT,
INT,
FLOAT,
LONG,
DOUBLE,
INT_OR_FLOAT,
LONG_OR_DOUBLE;
public boolean isPrecise() {
return this != INT_OR_FLOAT && this != LONG_OR_DOUBLE;
}
public static MemberType constrainedType(MemberType type, ValueTypeConstraint constraint) {
switch (constraint) {
case OBJECT:
if (type == OBJECT) {
return OBJECT;
}
break;
case INT:
if (type == INT || type == INT_OR_FLOAT) {
return INT;
}
break;
case FLOAT:
if (type == FLOAT || type == INT_OR_FLOAT) {
return FLOAT;
}
break;
case INT_OR_FLOAT:
if (type == INT || type == FLOAT || type == INT_OR_FLOAT) {
return type;
}
break;
case INT_OR_FLOAT_OR_OBJECT:
if (type == INT || type == FLOAT || type == OBJECT || type == INT_OR_FLOAT) {
return type;
}
break;
case LONG:
if (type == LONG || type == LONG_OR_DOUBLE) {
return LONG;
}
break;
case DOUBLE:
if (type == DOUBLE || type == LONG_OR_DOUBLE) {
return DOUBLE;
}
break;
case LONG_OR_DOUBLE:
if (type == LONG || type == DOUBLE || type == LONG_OR_DOUBLE) {
return type;
}
break;
default:
throw new Unreachable("Unexpected type constraint: " + constraint);
}
return null;
}
public static MemberType fromTypeDescriptorChar(char descriptor) {
switch (descriptor) {
case 'L':
case '[':
return MemberType.OBJECT;
case 'Z':
case 'B':
return MemberType.BOOLEAN_OR_BYTE;
case 'S':
return MemberType.SHORT;
case 'C':
return MemberType.CHAR;
case 'I':
return MemberType.INT;
case 'F':
return MemberType.FLOAT;
case 'J':
return MemberType.LONG;
case 'D':
return MemberType.DOUBLE;
case 'V':
throw new InternalCompilerError("No member type for void type.");
default:
throw new Unreachable("Invalid descriptor char '" + descriptor + "'");
}
}
public static MemberType fromDexType(DexType type) {
return fromTypeDescriptorChar((char) type.descriptor.content[0]);
}
}