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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.abicheck.collector;
import org.objectweb.asm.Opcodes;
import java.util.ArrayList;
import java.util.List;
public class Util {
public static final List<AccessFlag> classFlags = List.of(
AccessFlag.make(Opcodes.ACC_PUBLIC, "public"),
AccessFlag.make(Opcodes.ACC_PRIVATE, "private"),
AccessFlag.make(Opcodes.ACC_PROTECTED, "protected"),
AccessFlag.make(Opcodes.ACC_FINAL, "final"),
AccessFlag.ignored(Opcodes.ACC_SUPER), // Ignored, always set by modern Java
AccessFlag.make(Opcodes.ACC_INTERFACE, "interface"),
AccessFlag.make(Opcodes.ACC_ABSTRACT, "abstract"),
AccessFlag.make(Opcodes.ACC_SYNTHETIC, "synthetic"), // FIXME: Do we want this?
AccessFlag.make(Opcodes.ACC_ANNOTATION, "annotation"),
AccessFlag.make(Opcodes.ACC_ENUM, "enum"),
AccessFlag.make(Opcodes.ACC_RECORD, "record"),
// FIXME: Module support
// AccessFlag.make(Opcodes.ACC_MODULE, "module")
AccessFlag.ignored(Opcodes.ACC_DEPRECATED)
);
public static final List<AccessFlag> methodFlags = List.of(
AccessFlag.make(Opcodes.ACC_PUBLIC, "public"),
AccessFlag.make(Opcodes.ACC_PRIVATE, "private"),
AccessFlag.make(Opcodes.ACC_PROTECTED, "protected"),
AccessFlag.make(Opcodes.ACC_STATIC, "static"),
AccessFlag.make(Opcodes.ACC_FINAL, "final"),
AccessFlag.make(Opcodes.ACC_SYNCHRONIZED, "synchronized"),
AccessFlag.make(Opcodes.ACC_BRIDGE, "bridge"),
AccessFlag.make(Opcodes.ACC_VARARGS, "varargs"), // FIXME: Do we want this?
AccessFlag.make(Opcodes.ACC_NATIVE, "native"),
AccessFlag.make(Opcodes.ACC_ABSTRACT, "abstract"),
AccessFlag.make(Opcodes.ACC_STRICT, "strict"), // FIXME: Do we want this?
AccessFlag.make(Opcodes.ACC_SYNTHETIC, "synthetic"), // FIXME: Do we want this?
AccessFlag.ignored(Opcodes.ACC_DEPRECATED)
);
public static final List<AccessFlag> fieldFlags = List.of(
AccessFlag.make(Opcodes.ACC_PUBLIC, "public"),
AccessFlag.make(Opcodes.ACC_PRIVATE, "private"),
AccessFlag.make(Opcodes.ACC_PROTECTED, "protected"),
AccessFlag.make(Opcodes.ACC_STATIC, "static"),
AccessFlag.make(Opcodes.ACC_FINAL, "final"),
AccessFlag.make(Opcodes.ACC_VOLATILE, "volatile"),
AccessFlag.make(Opcodes.ACC_TRANSIENT, "transient"),
AccessFlag.make(Opcodes.ACC_SYNTHETIC, "synthetic"), // FIXME: Do we want this?
AccessFlag.make(Opcodes.ACC_ENUM, "enum"),
AccessFlag.ignored(Opcodes.ACC_DEPRECATED)
);
public static List<String> convertAccess(int access, List<AccessFlag> flags) {
List<String> result = new ArrayList<>();
for (AccessFlag flag : flags) {
if ((access & flag.bit) != 0 && flag.attribute != null) {
result.add(flag.attribute);
}
access &= ~flag.bit;
}
if (access != 0) {
throw new IllegalArgumentException(String.format("Unexpected access bits: 0x%x", access));
}
return result;
}
public static class AccessFlag {
public final int bit;
public final String attribute;
private AccessFlag(int bit, String attribute) {
this.bit = bit;
this.attribute = attribute;
}
private static AccessFlag make(int bit, String attribute) {
return new AccessFlag(bit, attribute);
}
private static AccessFlag ignored(int bit) {
return new AccessFlag(bit, null);
}
}
}
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