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Eclipse Compiler for Java(TM)
/*******************************************************************************
* Copyright (c) 2000, 2022 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
* Jesper S Moller - Contributions for
* Bug 405066 - [1.8][compiler][codegen] Implement code generation infrastructure for JSR335
* Bug 406982 - [1.8][compiler] Generation of MethodParameters Attribute in classfile
* Andy Clement (GoPivotal, Inc) [email protected] - Contributions for
* Bug 405104 - [1.8][compiler][codegen] Implement support for serializeable lambdas
*******************************************************************************/
package org.eclipse.jdt.internal.compiler.classfmt;
import org.eclipse.jdt.internal.compiler.ast.ASTNode;
public interface ClassFileConstants {
int AccDefault = 0;
/*
* Modifiers
*/
int AccPublic = 0x0001;
int AccPrivate = 0x0002;
int AccProtected = 0x0004;
int AccStatic = 0x0008;
int AccFinal = 0x0010;
int AccSynchronized = 0x0020;
int AccVolatile = 0x0040;
int AccBridge = 0x0040;
int AccTransient = 0x0080;
int AccVarargs = 0x0080;
int AccNative = 0x0100;
int AccInterface = 0x0200;
int AccAbstract = 0x0400;
int AccStrictfp = 0x0800;
int AccSynthetic = 0x1000;
int AccAnnotation = 0x2000;
int AccEnum = 0x4000;
int AccModule = 0x8000;
/**
* From classfile version 52 (compliance 1.8 up), meaning that a formal parameter is mandated
* by a language specification, so all compilers for the language must emit it.
*/
int AccMandated = 0x8000;
/**
* Flags in module declaration - since java9
*/
int ACC_OPEN = 0x0020;
int ACC_TRANSITIVE = 0x0020;
int ACC_STATIC_PHASE = 0x0040;
int ACC_SYNTHETIC = 0x1000;
/**
* Other VM flags.
*/
int AccSuper = 0x0020;
/**
* Extra flags for types and members attributes (not from the JVMS, should have been defined in ExtraCompilerModifiers).
*/
int AccAnnotationDefault = ASTNode.Bit18; // indicate presence of an attribute "DefaultValue" (annotation method)
int AccDeprecated = ASTNode.Bit21; // indicate presence of an attribute "Deprecated"
int Utf8Tag = 1;
int IntegerTag = 3;
int FloatTag = 4;
int LongTag = 5;
int DoubleTag = 6;
int ClassTag = 7;
int StringTag = 8;
int FieldRefTag = 9;
int MethodRefTag = 10;
int InterfaceMethodRefTag = 11;
int NameAndTypeTag = 12;
int MethodHandleTag = 15;
int MethodTypeTag = 16;
int DynamicTag = 17;
int InvokeDynamicTag = 18;
int ModuleTag = 19;
int PackageTag = 20;
int ConstantMethodRefFixedSize = 5;
int ConstantClassFixedSize = 3;
int ConstantDoubleFixedSize = 9;
int ConstantFieldRefFixedSize = 5;
int ConstantFloatFixedSize = 5;
int ConstantIntegerFixedSize = 5;
int ConstantInterfaceMethodRefFixedSize = 5;
int ConstantLongFixedSize = 9;
int ConstantStringFixedSize = 3;
int ConstantUtf8FixedSize = 3;
int ConstantNameAndTypeFixedSize = 5;
int ConstantMethodHandleFixedSize = 4;
int ConstantMethodTypeFixedSize = 3;
int ConstantDynamicFixedSize = 5;
int ConstantInvokeDynamicFixedSize = 5;
int ConstantModuleFixedSize = 3;
int ConstantPackageFixedSize = 3;
// JVMS 4.4.8
int MethodHandleRefKindGetField = 1;
int MethodHandleRefKindGetStatic = 2;
int MethodHandleRefKindPutField = 3;
int MethodHandleRefKindPutStatic = 4;
int MethodHandleRefKindInvokeVirtual = 5;
int MethodHandleRefKindInvokeStatic = 6;
int MethodHandleRefKindInvokeSpecial = 7;
int MethodHandleRefKindNewInvokeSpecial = 8;
int MethodHandleRefKindInvokeInterface = 9;
int MAJOR_VERSION_1_1 = 45;
int MAJOR_VERSION_1_2 = 46;
int MAJOR_VERSION_1_3 = 47;
int MAJOR_VERSION_1_4 = 48;
int MAJOR_VERSION_1_5 = 49;
int MAJOR_VERSION_1_6 = 50;
int MAJOR_VERSION_1_7 = 51;
int MAJOR_VERSION_1_8 = 52;
int MAJOR_VERSION_9 = 53;
int MAJOR_VERSION_10 = 54;
int MAJOR_VERSION_11 = 55;
int MAJOR_VERSION_12 = 56;
int MAJOR_VERSION_13 = 57;
int MAJOR_VERSION_14 = 58;
int MAJOR_VERSION_15 = 59;
int MAJOR_VERSION_16 = 60;
int MAJOR_VERSION_17 = 61;
int MAJOR_VERSION_18 = 62;
int MAJOR_VERSION_19 = 63;
int MAJOR_VERSION_0 = 44;
int MAJOR_LATEST_VERSION = MAJOR_VERSION_19;
int MINOR_VERSION_0 = 0;
int MINOR_VERSION_1 = 1;
int MINOR_VERSION_2 = 2;
int MINOR_VERSION_3 = 3;
int MINOR_VERSION_4 = 4;
int MINOR_VERSION_PREVIEW = 0xffff;
// JDK 1.1 -> 9, comparable value allowing to check both major/minor version at once 1.4.1 > 1.4.0
// 16 unsigned bits for major, then 16 bits for minor
long JDK1_1 = ((long)ClassFileConstants.MAJOR_VERSION_1_1 << 16) + ClassFileConstants.MINOR_VERSION_3; // 1.1. is 45.3
long JDK1_2 = ((long)ClassFileConstants.MAJOR_VERSION_1_2 << 16) + ClassFileConstants.MINOR_VERSION_0;
long JDK1_3 = ((long)ClassFileConstants.MAJOR_VERSION_1_3 << 16) + ClassFileConstants.MINOR_VERSION_0;
long JDK1_4 = ((long)ClassFileConstants.MAJOR_VERSION_1_4 << 16) + ClassFileConstants.MINOR_VERSION_0;
long JDK1_5 = ((long)ClassFileConstants.MAJOR_VERSION_1_5 << 16) + ClassFileConstants.MINOR_VERSION_0;
long JDK1_6 = ((long)ClassFileConstants.MAJOR_VERSION_1_6 << 16) + ClassFileConstants.MINOR_VERSION_0;
long JDK1_7 = ((long)ClassFileConstants.MAJOR_VERSION_1_7 << 16) + ClassFileConstants.MINOR_VERSION_0;
long JDK1_8 = ((long)ClassFileConstants.MAJOR_VERSION_1_8 << 16) + ClassFileConstants.MINOR_VERSION_0;
long JDK9 = ((long)ClassFileConstants.MAJOR_VERSION_9 << 16) + ClassFileConstants.MINOR_VERSION_0;
long JDK10 = ((long)ClassFileConstants.MAJOR_VERSION_10 << 16) + ClassFileConstants.MINOR_VERSION_0;
long JDK11 = ((long)ClassFileConstants.MAJOR_VERSION_11 << 16) + ClassFileConstants.MINOR_VERSION_0;
long JDK12 = ((long)ClassFileConstants.MAJOR_VERSION_12 << 16) + ClassFileConstants.MINOR_VERSION_0;
long JDK13 = ((long)ClassFileConstants.MAJOR_VERSION_13 << 16) + ClassFileConstants.MINOR_VERSION_0;
long JDK14 = ((long)ClassFileConstants.MAJOR_VERSION_14 << 16) + ClassFileConstants.MINOR_VERSION_0;
long JDK15 = ((long)ClassFileConstants.MAJOR_VERSION_15 << 16) + ClassFileConstants.MINOR_VERSION_0;
long JDK16 = ((long)ClassFileConstants.MAJOR_VERSION_16 << 16) + ClassFileConstants.MINOR_VERSION_0;
long JDK17 = ((long)ClassFileConstants.MAJOR_VERSION_17 << 16) + ClassFileConstants.MINOR_VERSION_0;
long JDK18 = ((long)ClassFileConstants.MAJOR_VERSION_18 << 16) + ClassFileConstants.MINOR_VERSION_0;
long JDK19 = ((long)ClassFileConstants.MAJOR_VERSION_19 << 16) + ClassFileConstants.MINOR_VERSION_0;
public static long getLatestJDKLevel() {
return ((long)ClassFileConstants.MAJOR_LATEST_VERSION << 16) + ClassFileConstants.MINOR_VERSION_0;
}
/**
* As we move away from declaring every compliance level explicitly (such as JDK11, JDK12 etc.),
* this method can be used to compute the compliance level on the fly for a given Java major version.
*
* @param major Java major version
* @return the compliance level for the given Java version
*/
public static long getComplianceLevelForJavaVersion(int major) {
switch(major) {
case ClassFileConstants.MAJOR_VERSION_1_1:
return ((long)ClassFileConstants.MAJOR_VERSION_1_1 << 16) + ClassFileConstants.MINOR_VERSION_3;
default:
major = Math.min(major, MAJOR_LATEST_VERSION);
return ((long)major << 16) + ClassFileConstants.MINOR_VERSION_0;
}
}
/*
* cldc1.1 is 45.3, but we modify it to be different from JDK1_1.
* In the code gen, we will generate the same target value as JDK1_1
*/
long CLDC_1_1 = ((long)ClassFileConstants.MAJOR_VERSION_1_1 << 16) + ClassFileConstants.MINOR_VERSION_4;
// jdk level used to denote future releases: optional behavior is not enabled for now, but may become so. In order to enable these,
// search for references to this constant, and change it to one of the official JDT constants above.
long JDK_DEFERRED = Long.MAX_VALUE;
int INT_ARRAY = 10;
int BYTE_ARRAY = 8;
int BOOLEAN_ARRAY = 4;
int SHORT_ARRAY = 9;
int CHAR_ARRAY = 5;
int LONG_ARRAY = 11;
int FLOAT_ARRAY = 6;
int DOUBLE_ARRAY = 7;
// Debug attributes
int ATTR_SOURCE = 0x1; // SourceFileAttribute
int ATTR_LINES = 0x2; // LineNumberAttribute
int ATTR_VARS = 0x4; // LocalVariableTableAttribute
int ATTR_STACK_MAP_TABLE = 0x8; // Stack map table attribute
int ATTR_STACK_MAP = 0x10; // Stack map attribute: cldc
int ATTR_TYPE_ANNOTATION = 0x20; // type annotation attribute (jsr 308)
int ATTR_METHOD_PARAMETERS = 0x40; // method parameters attribute (jep 118)
// See java.lang.invoke.LambdaMetafactory constants - option bitflags when calling altMetaFactory()
int FLAG_SERIALIZABLE = 0x01;
int FLAG_MARKERS = 0x02;
int FLAG_BRIDGES = 0x04;
}