/**
* Cast expression code generation
*
* @param currentScope org.eclipse.jdt.internal.compiler.lookup.BlockScope
* @param codeStream org.eclipse.jdt.internal.compiler.codegen.CodeStream
* @param valueRequired boolean
*/
public void generateCode(BlockScope currentScope, CodeStream codeStream, boolean valueRequired) {
int pc = codeStream.position;
boolean needRuntimeCheckcast = (this.bits & ASTNode.GenerateCheckcast) != 0;
if (this.constant != Constant.NotAConstant) {
if (valueRequired
|| needRuntimeCheckcast) { // Added for: 1F1W9IG: IVJCOM:WINNT - Compiler omits casting
// check
codeStream.generateConstant(this.constant, this.implicitConversion);
if (needRuntimeCheckcast) {
codeStream.checkcast(this.resolvedType);
}
if (!valueRequired) {
// the resolveType cannot be double or long
codeStream.pop();
}
}
codeStream.recordPositionsFrom(pc, this.sourceStart);
return;
}
this.expression.generateCode(currentScope, codeStream, valueRequired || needRuntimeCheckcast);
if (needRuntimeCheckcast
&& this.expression.postConversionType(currentScope)
!= this.resolvedType
.erasure()) { // no need to issue a checkcast if already done as genericCast
codeStream.checkcast(this.resolvedType);
}
if (valueRequired) {
codeStream.generateImplicitConversion(this.implicitConversion);
} else if (needRuntimeCheckcast) {
codeStream.pop();
}
codeStream.recordPositionsFrom(pc, this.sourceStart);
}
/** Code generation for a array allocation expression */
public void generateCode(BlockScope currentScope, CodeStream codeStream, boolean valueRequired) {
int pc = codeStream.position;
if (initializer != null) {
initializer.generateCode(currentScope, codeStream, valueRequired);
return;
}
int nonNullDimensionsLength = 0;
for (int i = 0, max = dimensions.length; i < max; i++)
if (dimensions[i] != null) {
dimensions[i].generateCode(currentScope, codeStream, true);
nonNullDimensionsLength++;
}
// Generate a sequence of bytecodes corresponding to an array allocation
if (this.resolvedType.dimensions() == 1) {
// Mono-dimensional array
codeStream.newArray((ArrayBinding) this.resolvedType);
} else {
// Multi-dimensional array
codeStream.multianewarray(this.resolvedType, nonNullDimensionsLength);
}
if (valueRequired) {
codeStream.generateImplicitConversion(implicitConversion);
} else {
codeStream.pop();
}
codeStream.recordPositionsFrom(pc, this.sourceStart);
}
/**
* Code generation for instanceOfExpression
*
* @param currentScope org.eclipse.jdt.internal.compiler.lookup.BlockScope
* @param codeStream org.eclipse.jdt.internal.compiler.codegen.CodeStream
* @param valueRequired boolean
*/
public void generateCode(BlockScope currentScope, CodeStream codeStream, boolean valueRequired) {
int pc = codeStream.position;
this.expression.generateCode(currentScope, codeStream, true);
codeStream.instance_of(this.type.resolvedType);
if (valueRequired) {
codeStream.generateImplicitConversion(this.implicitConversion);
} else {
codeStream.pop();
}
codeStream.recordPositionsFrom(pc, this.sourceStart);
}
/**
* MessageSendDotClass code generation
*
* @param currentScope org.eclipse.jdt.internal.compiler.lookup.BlockScope
* @param codeStream org.eclipse.jdt.internal.compiler.codegen.CodeStream
* @param valueRequired boolean
*/
public void generateCode(BlockScope currentScope, CodeStream codeStream, boolean valueRequired) {
// {ObjectTeams: role class literal?
if (this.roleClassLiteralAccess != null) {
this.roleClassLiteralAccess.generateCode(currentScope, codeStream, valueRequired);
return;
}
// SH}
int pc = codeStream.position;
// in interface case, no caching occurs, since cannot make a cache field for interface
if (valueRequired) {
codeStream.generateClassLiteralAccessForType(this.type.resolvedType, this.syntheticField);
codeStream.generateImplicitConversion(this.implicitConversion);
}
codeStream.recordPositionsFrom(pc, this.sourceStart);
}
/**
* Cast expression code generation
*
* @param currentScope org.eclipse.jdt.internal.compiler.lookup.BlockScope
* @param codeStream org.eclipse.jdt.internal.compiler.codegen.CodeStream
* @param valueRequired boolean
*/
public void generateCode(BlockScope currentScope, CodeStream codeStream, boolean valueRequired) {
int pc = codeStream.position;
boolean annotatedCast = (this.type.bits & ASTNode.HasTypeAnnotations) != 0;
boolean needRuntimeCheckcast = (this.bits & ASTNode.GenerateCheckcast) != 0;
if (this.constant != Constant.NotAConstant) {
if (valueRequired
|| needRuntimeCheckcast
|| annotatedCast) { // Added for: 1F1W9IG: IVJCOM:WINNT - Compiler omits casting check
codeStream.generateConstant(this.constant, this.implicitConversion);
if (needRuntimeCheckcast || annotatedCast) {
codeStream.checkcast(this.type, this.resolvedType, pc);
}
if (!valueRequired) {
// the resolveType cannot be double or long
codeStream.pop();
}
}
codeStream.recordPositionsFrom(pc, this.sourceStart);
return;
}
this.expression.generateCode(
currentScope, codeStream, annotatedCast || valueRequired || needRuntimeCheckcast);
if (annotatedCast
|| (needRuntimeCheckcast
&& TypeBinding.notEquals(
this.expression.postConversionType(currentScope),
this.resolvedType
.erasure()))) { // no need to issue a checkcast if already done as genericCast
codeStream.checkcast(this.type, this.resolvedType, pc);
}
if (valueRequired) {
codeStream.generateImplicitConversion(this.implicitConversion);
} else if (annotatedCast || needRuntimeCheckcast) {
switch (this.resolvedType.id) {
case T_long:
case T_double:
codeStream.pop2();
break;
default:
codeStream.pop();
break;
}
}
codeStream.recordPositionsFrom(pc, this.sourceStart);
}
/**
* Normal == or != code generation.
*
* @param currentScope org.eclipse.jdt.internal.compiler.lookup.BlockScope
* @param codeStream org.eclipse.jdt.internal.compiler.codegen.CodeStream
* @param valueRequired boolean
*/
public void generateCode(BlockScope currentScope, CodeStream codeStream, boolean valueRequired) {
int pc = codeStream.position;
if (this.constant != Constant.NotAConstant) {
if (valueRequired) codeStream.generateConstant(this.constant, this.implicitConversion);
codeStream.recordPositionsFrom(pc, this.sourceStart);
return;
}
if ((this.left.implicitConversion & COMPILE_TYPE_MASK) /*compile-time*/ == T_boolean) {
generateBooleanEqual(currentScope, codeStream, valueRequired);
} else {
generateNonBooleanEqual(currentScope, codeStream, valueRequired);
}
if (valueRequired) {
codeStream.generateImplicitConversion(this.implicitConversion);
}
codeStream.recordPositionsFrom(pc, this.sourceStart);
}
public void generateAssignment(
BlockScope currentScope,
CodeStream codeStream,
Assignment assignment,
boolean valueRequired) {
int pc = codeStream.position;
FieldBinding codegenBinding = this.binding.original();
this.receiver.generateCode(currentScope, codeStream, !codegenBinding.isStatic());
codeStream.recordPositionsFrom(pc, this.sourceStart);
assignment.expression.generateCode(currentScope, codeStream, true);
fieldStore(
currentScope,
codeStream,
codegenBinding,
this.syntheticAccessors == null ? null : this.syntheticAccessors[FieldReference.WRITE],
this.actualReceiverType,
this.receiver.isImplicitThis(),
valueRequired);
if (valueRequired) {
codeStream.generateImplicitConversion(assignment.implicitConversion);
}
// no need for generic cast as value got dupped
}
/** Code generation for a binary operation */
public void generateCode(BlockScope currentScope, CodeStream codeStream, boolean valueRequired) {
int pc = codeStream.position;
if (this.constant != Constant.NotAConstant) {
// inlined value
if (valueRequired) codeStream.generateConstant(this.constant, this.implicitConversion);
codeStream.recordPositionsFrom(pc, this.sourceStart);
return;
}
Constant cst = this.right.constant;
if (cst != Constant.NotAConstant) {
// <expr> || true --> true
if (cst.booleanValue() == true) {
this.left.generateCode(currentScope, codeStream, false);
if (valueRequired) codeStream.iconst_1();
} else {
// <expr>|| false --> <expr>
this.left.generateCode(currentScope, codeStream, valueRequired);
}
if (this.mergedInitStateIndex != -1) {
codeStream.removeNotDefinitelyAssignedVariables(currentScope, this.mergedInitStateIndex);
}
codeStream.generateImplicitConversion(this.implicitConversion);
codeStream.recordPositionsFrom(pc, this.sourceStart);
return;
}
BranchLabel trueLabel = new BranchLabel(codeStream), endLabel;
cst = this.left.optimizedBooleanConstant();
boolean leftIsConst = cst != Constant.NotAConstant;
boolean leftIsTrue = leftIsConst && cst.booleanValue() == true;
cst = this.right.optimizedBooleanConstant();
boolean rightIsConst = cst != Constant.NotAConstant;
boolean rightIsTrue = rightIsConst && cst.booleanValue() == true;
generateOperands:
{
if (leftIsConst) {
this.left.generateCode(currentScope, codeStream, false);
if (leftIsTrue) {
break generateOperands; // no need to generate right operand
}
} else {
this.left.generateOptimizedBoolean(currentScope, codeStream, trueLabel, null, true);
// need value, e.g. if (a == 1 || ((b = 2) > 0)) {} -> shouldn't initialize 'b' if a==1
}
if (this.rightInitStateIndex != -1) {
codeStream.addDefinitelyAssignedVariables(currentScope, this.rightInitStateIndex);
}
if (rightIsConst) {
this.right.generateCode(currentScope, codeStream, false);
} else {
this.right.generateOptimizedBoolean(
currentScope, codeStream, trueLabel, null, valueRequired);
}
}
if (this.mergedInitStateIndex != -1) {
codeStream.removeNotDefinitelyAssignedVariables(currentScope, this.mergedInitStateIndex);
}
/*
* improving code gen for such a case: boolean b = i < 0 || true since
* the label has never been used, we have the inlined value on the
* stack.
*/
if (valueRequired) {
if (leftIsConst && leftIsTrue) {
codeStream.iconst_1();
codeStream.recordPositionsFrom(codeStream.position, this.left.sourceEnd);
} else {
if (rightIsConst && rightIsTrue) {
codeStream.iconst_1();
codeStream.recordPositionsFrom(codeStream.position, this.left.sourceEnd);
} else {
codeStream.iconst_0();
}
if (trueLabel.forwardReferenceCount() > 0) {
if ((this.bits & IsReturnedValue) != 0) {
codeStream.generateImplicitConversion(this.implicitConversion);
codeStream.generateReturnBytecode(this);
trueLabel.place();
codeStream.iconst_1();
} else {
codeStream.goto_(endLabel = new BranchLabel(codeStream));
codeStream.decrStackSize(1);
trueLabel.place();
codeStream.iconst_1();
endLabel.place();
}
} else {
trueLabel.place();
}
}
codeStream.generateImplicitConversion(this.implicitConversion);
codeStream.recordPositionsFrom(codeStream.position, this.sourceEnd);
} else {
trueLabel.place();
}
}
public void generateCode(BlockScope currentScope, CodeStream codeStream, boolean valueRequired) {
if (!valueRequired) currentScope.problemReporter().unusedObjectAllocation(this);
int pc = codeStream.position;
MethodBinding codegenBinding = this.binding.original();
ReferenceBinding allocatedType = codegenBinding.declaringClass;
codeStream.new_(allocatedType);
boolean isUnboxing = (this.implicitConversion & TypeIds.UNBOXING) != 0;
if (valueRequired || isUnboxing) {
codeStream.dup();
}
// better highlight for allocation: display the type individually
if (this.type != null) { // null for enum constant body
codeStream.recordPositionsFrom(pc, this.type.sourceStart);
} else {
// push enum constant name and ordinal
codeStream.ldc(String.valueOf(this.enumConstant.name));
codeStream.generateInlinedValue(this.enumConstant.binding.id);
}
// handling innerclass instance allocation - enclosing instance arguments
if (allocatedType.isNestedType()) {
codeStream.generateSyntheticEnclosingInstanceValues(
currentScope, allocatedType, enclosingInstance(), this);
}
// generate the arguments for constructor
generateArguments(this.binding, this.arguments, currentScope, codeStream);
// handling innerclass instance allocation - outer local arguments
if (allocatedType.isNestedType()) {
codeStream.generateSyntheticOuterArgumentValues(currentScope, allocatedType, this);
}
// invoke constructor
if (this.syntheticAccessor == null) {
codeStream.invoke(
Opcodes.OPC_invokespecial, codegenBinding, null /* default declaringClass */);
} else {
// synthetic accessor got some extra arguments appended to its signature, which need values
for (int i = 0,
max = this.syntheticAccessor.parameters.length - codegenBinding.parameters.length;
i < max;
i++) {
codeStream.aconst_null();
}
codeStream.invoke(
Opcodes.OPC_invokespecial, this.syntheticAccessor, null /* default declaringClass */);
}
if (valueRequired) {
codeStream.generateImplicitConversion(this.implicitConversion);
} else if (isUnboxing) {
// conversion only generated if unboxing
codeStream.generateImplicitConversion(this.implicitConversion);
switch (postConversionType(currentScope).id) {
case T_long:
case T_double:
codeStream.pop2();
break;
default:
codeStream.pop();
}
}
codeStream.recordPositionsFrom(pc, this.sourceStart);
if (this.anonymousType != null) {
this.anonymousType.generateCode(currentScope, codeStream);
}
}
public void generatePostIncrement(
BlockScope currentScope,
CodeStream codeStream,
CompoundAssignment postIncrement,
boolean valueRequired) {
boolean isStatic;
// check if postIncrement is the only usage of a private field
reportOnlyUselesslyReadPrivateField(currentScope, this.binding, valueRequired);
FieldBinding codegenBinding = this.binding.original();
this.receiver.generateCode(currentScope, codeStream, !(isStatic = codegenBinding.isStatic()));
if (isStatic) {
if (this.syntheticAccessors == null || this.syntheticAccessors[FieldReference.READ] == null) {
TypeBinding constantPoolDeclaringClass =
CodeStream.getConstantPoolDeclaringClass(
currentScope,
codegenBinding,
this.actualReceiverType,
this.receiver.isImplicitThis());
codeStream.fieldAccess(Opcodes.OPC_getstatic, codegenBinding, constantPoolDeclaringClass);
} else {
codeStream.invoke(
Opcodes.OPC_invokestatic,
this.syntheticAccessors[FieldReference.READ],
null /* default declaringClass */);
}
} else {
codeStream.dup();
if (this.syntheticAccessors == null || this.syntheticAccessors[FieldReference.READ] == null) {
TypeBinding constantPoolDeclaringClass =
CodeStream.getConstantPoolDeclaringClass(
currentScope,
codegenBinding,
this.actualReceiverType,
this.receiver.isImplicitThis());
codeStream.fieldAccess(Opcodes.OPC_getfield, codegenBinding, constantPoolDeclaringClass);
} else {
codeStream.invoke(
Opcodes.OPC_invokestatic,
this.syntheticAccessors[FieldReference.READ],
null /* default declaringClass */);
}
}
TypeBinding operandType;
if (this.genericCast != null) {
codeStream.checkcast(this.genericCast);
operandType = this.genericCast;
} else {
operandType = codegenBinding.type;
}
if (valueRequired) {
if (isStatic) {
switch (operandType.id) {
case TypeIds.T_long:
case TypeIds.T_double:
codeStream.dup2();
break;
default:
codeStream.dup();
break;
}
} else { // Stack: [owner][old field value] ---> [old field value][owner][old field value]
switch (operandType.id) {
case TypeIds.T_long:
case TypeIds.T_double:
codeStream.dup2_x1();
break;
default:
codeStream.dup_x1();
break;
}
}
}
codeStream.generateImplicitConversion(this.implicitConversion);
codeStream.generateConstant(postIncrement.expression.constant, this.implicitConversion);
codeStream.sendOperator(
postIncrement.operator, this.implicitConversion & TypeIds.COMPILE_TYPE_MASK);
codeStream.generateImplicitConversion(postIncrement.preAssignImplicitConversion);
fieldStore(
currentScope,
codeStream,
codegenBinding,
this.syntheticAccessors == null ? null : this.syntheticAccessors[FieldReference.WRITE],
this.actualReceiverType,
this.receiver.isImplicitThis(),
false);
}
public void generateCompoundAssignment(
BlockScope currentScope,
CodeStream codeStream,
Expression expression,
int operator,
int assignmentImplicitConversion,
boolean valueRequired) {
boolean isStatic;
// check if compound assignment is the only usage of a private field
reportOnlyUselesslyReadPrivateField(currentScope, this.binding, valueRequired);
FieldBinding codegenBinding = this.binding.original();
this.receiver.generateCode(currentScope, codeStream, !(isStatic = codegenBinding.isStatic()));
if (isStatic) {
if (this.syntheticAccessors == null || this.syntheticAccessors[FieldReference.READ] == null) {
TypeBinding constantPoolDeclaringClass =
CodeStream.getConstantPoolDeclaringClass(
currentScope,
codegenBinding,
this.actualReceiverType,
this.receiver.isImplicitThis());
codeStream.fieldAccess(Opcodes.OPC_getstatic, codegenBinding, constantPoolDeclaringClass);
} else {
codeStream.invoke(
Opcodes.OPC_invokestatic,
this.syntheticAccessors[FieldReference.READ],
null /* default declaringClass */);
}
} else {
codeStream.dup();
if (this.syntheticAccessors == null || this.syntheticAccessors[FieldReference.READ] == null) {
TypeBinding constantPoolDeclaringClass =
CodeStream.getConstantPoolDeclaringClass(
currentScope,
codegenBinding,
this.actualReceiverType,
this.receiver.isImplicitThis());
codeStream.fieldAccess(Opcodes.OPC_getfield, codegenBinding, constantPoolDeclaringClass);
} else {
codeStream.invoke(
Opcodes.OPC_invokestatic,
this.syntheticAccessors[FieldReference.READ],
null /* default declaringClass */);
}
}
int operationTypeID;
switch (operationTypeID = (this.implicitConversion & TypeIds.IMPLICIT_CONVERSION_MASK) >> 4) {
case T_JavaLangString:
case T_JavaLangObject:
case T_undefined:
codeStream.generateStringConcatenationAppend(currentScope, null, expression);
break;
default:
if (this.genericCast != null) codeStream.checkcast(this.genericCast);
// promote the array reference to the suitable operation type
codeStream.generateImplicitConversion(this.implicitConversion);
// generate the increment value (will by itself be promoted to the operation value)
if (expression == IntLiteral.One) { // prefix operation
codeStream.generateConstant(expression.constant, this.implicitConversion);
} else {
expression.generateCode(currentScope, codeStream, true);
}
// perform the operation
codeStream.sendOperator(operator, operationTypeID);
// cast the value back to the array reference type
codeStream.generateImplicitConversion(assignmentImplicitConversion);
}
fieldStore(
currentScope,
codeStream,
codegenBinding,
this.syntheticAccessors == null ? null : this.syntheticAccessors[FieldReference.WRITE],
this.actualReceiverType,
this.receiver.isImplicitThis(),
valueRequired);
// no need for generic cast as value got dupped
}
/** Code generation for a array initializer */
public void generateCode(BlockScope currentScope, CodeStream codeStream, boolean valueRequired) {
// Flatten the values and compute the dimensions, by iterating in depth into nested array
// initializers
int pc = codeStream.position;
int expressionLength = (this.expressions == null) ? 0 : this.expressions.length;
codeStream.generateInlinedValue(expressionLength);
codeStream.newArray(this.binding);
if (this.expressions != null) {
// binding is an ArrayType, so I can just deal with the dimension
int elementsTypeID = this.binding.dimensions > 1 ? -1 : this.binding.leafComponentType.id;
for (int i = 0; i < expressionLength; i++) {
Expression expr;
if ((expr = this.expressions[i]).constant != Constant.NotAConstant) {
switch (elementsTypeID) { // filter out initializations to default values
case T_int:
case T_short:
case T_byte:
case T_char:
case T_long:
if (expr.constant.longValue() != 0) {
codeStream.dup();
codeStream.generateInlinedValue(i);
expr.generateCode(currentScope, codeStream, true);
codeStream.arrayAtPut(elementsTypeID, false);
}
break;
case T_float:
case T_double:
double constantValue = expr.constant.doubleValue();
if (constantValue == -0.0 || constantValue != 0) {
codeStream.dup();
codeStream.generateInlinedValue(i);
expr.generateCode(currentScope, codeStream, true);
codeStream.arrayAtPut(elementsTypeID, false);
}
break;
case T_boolean:
if (expr.constant.booleanValue() != false) {
codeStream.dup();
codeStream.generateInlinedValue(i);
expr.generateCode(currentScope, codeStream, true);
codeStream.arrayAtPut(elementsTypeID, false);
}
break;
default:
if (!(expr instanceof NullLiteral)) {
codeStream.dup();
codeStream.generateInlinedValue(i);
expr.generateCode(currentScope, codeStream, true);
codeStream.arrayAtPut(elementsTypeID, false);
}
}
} else if (!(expr instanceof NullLiteral)) {
codeStream.dup();
codeStream.generateInlinedValue(i);
expr.generateCode(currentScope, codeStream, true);
codeStream.arrayAtPut(elementsTypeID, false);
}
}
}
if (valueRequired) {
codeStream.generateImplicitConversion(this.implicitConversion);
} else {
codeStream.pop();
}
codeStream.recordPositionsFrom(pc, this.sourceStart);
}
/**
* MessageSend code generation
*
* @param currentScope org.eclipse.jdt.internal.compiler.lookup.BlockScope
* @param codeStream org.eclipse.jdt.internal.compiler.codegen.CodeStream
* @param valueRequired boolean
*/
public void generateCode(BlockScope currentScope, CodeStream codeStream, boolean valueRequired) {
int pc = codeStream.position;
MethodBinding codegenBinding = this.binding.original();
if (codegenBinding.canBeSeenBy(this.actualReceiverType, this, currentScope)) {
// generate receiver/enclosing instance access
boolean isStatic = codegenBinding.isStatic();
// outer access ?
if (!isStatic && ((this.bits & DepthMASK) != 0)) {
// outer method can be reached through emulation
ReferenceBinding targetType =
currentScope
.enclosingSourceType()
.enclosingTypeAt((this.bits & DepthMASK) >> DepthSHIFT);
Object[] path =
currentScope.getEmulationPath(
targetType, true /*only exact match*/, false /*consider enclosing arg*/);
if (path == null) {
// emulation was not possible (should not happen per construction)
currentScope.problemReporter().needImplementation(this);
} else {
codeStream.generateOuterAccess(path, this, targetType, currentScope);
}
} else {
this.receiver.generateCode(currentScope, codeStream, !isStatic);
if ((this.bits & NeedReceiverGenericCast) != 0) {
codeStream.checkcast(this.actualReceiverType);
}
codeStream.recordPositionsFrom(pc, this.sourceStart);
}
// generate arguments
generateArguments(this.binding, this.arguments, currentScope, codeStream);
// actual message invocation
TypeBinding constantPoolDeclaringClass =
CodeStream.getConstantPoolDeclaringClass(
currentScope,
codegenBinding,
this.actualReceiverType,
this.receiver.isImplicitThis());
if (isStatic) {
codeStream.invoke(Opcodes.OPC_invokestatic, codegenBinding, constantPoolDeclaringClass);
} else if ((this.receiver.isSuper()) || codegenBinding.isPrivate()) {
codeStream.invoke(Opcodes.OPC_invokespecial, codegenBinding, constantPoolDeclaringClass);
} else {
if (constantPoolDeclaringClass.isInterface()) { // interface or annotation type
codeStream.invoke(
Opcodes.OPC_invokeinterface, codegenBinding, constantPoolDeclaringClass);
} else {
codeStream.invoke(Opcodes.OPC_invokevirtual, codegenBinding, constantPoolDeclaringClass);
}
}
} else {
codeStream.generateEmulationForMethod(currentScope, codegenBinding);
// generate receiver/enclosing instance access
boolean isStatic = codegenBinding.isStatic();
// outer access ?
if (!isStatic && ((this.bits & DepthMASK) != 0)) {
// not supported yet
currentScope.problemReporter().needImplementation(this);
} else {
this.receiver.generateCode(currentScope, codeStream, !isStatic);
if ((this.bits & NeedReceiverGenericCast) != 0) {
codeStream.checkcast(this.actualReceiverType);
}
codeStream.recordPositionsFrom(pc, this.sourceStart);
}
if (isStatic) {
// we need an object on the stack which is ignored for the method invocation
codeStream.aconst_null();
}
// generate arguments
if (this.arguments != null) {
int argsLength = this.arguments.length;
codeStream.generateInlinedValue(argsLength);
codeStream.newArray(
currentScope.createArrayType(
currentScope.getType(TypeConstants.JAVA_LANG_OBJECT, 3), 1));
codeStream.dup();
for (int i = 0; i < argsLength; i++) {
codeStream.generateInlinedValue(i);
this.arguments[i].generateCode(currentScope, codeStream, true);
TypeBinding parameterBinding = codegenBinding.parameters[i];
if (parameterBinding.isBaseType() && parameterBinding != TypeBinding.NULL) {
codeStream.generateBoxingConversion(codegenBinding.parameters[i].id);
}
codeStream.aastore();
if (i < argsLength - 1) {
codeStream.dup();
}
}
} else {
codeStream.generateInlinedValue(0);
codeStream.newArray(
currentScope.createArrayType(
currentScope.getType(TypeConstants.JAVA_LANG_OBJECT, 3), 1));
}
codeStream.invokeJavaLangReflectMethodInvoke();
// convert the return value to the appropriate type for primitive types
if (codegenBinding.returnType.isBaseType()) {
int typeID = codegenBinding.returnType.id;
if (typeID == T_void) {
// remove the null from the stack
codeStream.pop();
}
codeStream.checkcast(typeID);
codeStream.getBaseTypeValue(typeID);
} else {
codeStream.checkcast(codegenBinding.returnType);
}
}
// required cast must occur even if no value is required
if (this.valueCast != null) codeStream.checkcast(this.valueCast);
if (valueRequired) {
// implicit conversion if necessary
codeStream.generateImplicitConversion(this.implicitConversion);
} else {
boolean isUnboxing = (this.implicitConversion & TypeIds.UNBOXING) != 0;
// conversion only generated if unboxing
if (isUnboxing) codeStream.generateImplicitConversion(this.implicitConversion);
switch (isUnboxing ? postConversionType(currentScope).id : codegenBinding.returnType.id) {
case T_long:
case T_double:
codeStream.pop2();
break;
case T_void:
break;
default:
codeStream.pop();
}
}
codeStream.recordPositionsFrom(
pc, (int) (this.nameSourcePosition >>> 32)); // highlight selector
}
/** Boolean generation for == with non-boolean operands */
public void generateNonBooleanEqual(
BlockScope currentScope, CodeStream codeStream, boolean valueRequired) {
boolean isEqualOperator = ((this.bits & OperatorMASK) >> OperatorSHIFT) == EQUAL_EQUAL;
if (((this.left.implicitConversion & IMPLICIT_CONVERSION_MASK) >> 4) == T_int) {
Constant cst;
if ((cst = this.left.constant) != Constant.NotAConstant && cst.intValue() == 0) {
// optimized case: 0 == x, 0 != x
this.right.generateCode(currentScope, codeStream, valueRequired);
if (valueRequired) {
BranchLabel falseLabel = new BranchLabel(codeStream);
if (isEqualOperator) {
codeStream.ifne(falseLabel);
} else {
codeStream.ifeq(falseLabel);
}
// comparison is TRUE
codeStream.iconst_1();
if ((this.bits & IsReturnedValue) != 0) {
codeStream.generateImplicitConversion(this.implicitConversion);
codeStream.generateReturnBytecode(this);
// comparison is FALSE
falseLabel.place();
codeStream.iconst_0();
} else {
BranchLabel endLabel = new BranchLabel(codeStream);
codeStream.goto_(endLabel);
codeStream.decrStackSize(1);
// comparison is FALSE
falseLabel.place();
codeStream.iconst_0();
endLabel.place();
}
}
return;
}
if ((cst = this.right.constant) != Constant.NotAConstant && cst.intValue() == 0) {
// optimized case: x == 0, x != 0
this.left.generateCode(currentScope, codeStream, valueRequired);
if (valueRequired) {
BranchLabel falseLabel = new BranchLabel(codeStream);
if (isEqualOperator) {
codeStream.ifne(falseLabel);
} else {
codeStream.ifeq(falseLabel);
}
// comparison is TRUE
codeStream.iconst_1();
if ((this.bits & IsReturnedValue) != 0) {
codeStream.generateImplicitConversion(this.implicitConversion);
codeStream.generateReturnBytecode(this);
// comparison is FALSE
falseLabel.place();
codeStream.iconst_0();
} else {
BranchLabel endLabel = new BranchLabel(codeStream);
codeStream.goto_(endLabel);
codeStream.decrStackSize(1);
// comparison is FALSE
falseLabel.place();
codeStream.iconst_0();
endLabel.place();
}
}
return;
}
}
// null cases
if (this.right instanceof NullLiteral) {
if (this.left instanceof NullLiteral) {
// null == null, null != null
if (valueRequired) {
if (isEqualOperator) {
codeStream.iconst_1();
} else {
codeStream.iconst_0();
}
}
} else {
// x == null, x != null
this.left.generateCode(currentScope, codeStream, valueRequired);
if (valueRequired) {
BranchLabel falseLabel = new BranchLabel(codeStream);
if (isEqualOperator) {
codeStream.ifnonnull(falseLabel);
} else {
codeStream.ifnull(falseLabel);
}
// comparison is TRUE
codeStream.iconst_1();
if ((this.bits & IsReturnedValue) != 0) {
codeStream.generateImplicitConversion(this.implicitConversion);
codeStream.generateReturnBytecode(this);
// comparison is FALSE
falseLabel.place();
codeStream.iconst_0();
} else {
BranchLabel endLabel = new BranchLabel(codeStream);
codeStream.goto_(endLabel);
codeStream.decrStackSize(1);
// comparison is FALSE
falseLabel.place();
codeStream.iconst_0();
endLabel.place();
}
}
}
return;
} else if (this.left instanceof NullLiteral) {
// null = x, null != x
this.right.generateCode(currentScope, codeStream, valueRequired);
if (valueRequired) {
BranchLabel falseLabel = new BranchLabel(codeStream);
if (isEqualOperator) {
codeStream.ifnonnull(falseLabel);
} else {
codeStream.ifnull(falseLabel);
}
// comparison is TRUE
codeStream.iconst_1();
if ((this.bits & IsReturnedValue) != 0) {
codeStream.generateImplicitConversion(this.implicitConversion);
codeStream.generateReturnBytecode(this);
// comparison is FALSE
falseLabel.place();
codeStream.iconst_0();
} else {
BranchLabel endLabel = new BranchLabel(codeStream);
codeStream.goto_(endLabel);
codeStream.decrStackSize(1);
// comparison is FALSE
falseLabel.place();
codeStream.iconst_0();
endLabel.place();
}
}
return;
}
// default case
this.left.generateCode(currentScope, codeStream, valueRequired);
this.right.generateCode(currentScope, codeStream, valueRequired);
if (valueRequired) {
BranchLabel falseLabel = new BranchLabel(codeStream);
if (isEqualOperator) {
switch ((this.left.implicitConversion & IMPLICIT_CONVERSION_MASK)
>> 4) { // operand runtime type
case T_int:
codeStream.if_icmpne(falseLabel);
break;
case T_float:
codeStream.fcmpl();
codeStream.ifne(falseLabel);
break;
case T_long:
codeStream.lcmp();
codeStream.ifne(falseLabel);
break;
case T_double:
codeStream.dcmpl();
codeStream.ifne(falseLabel);
break;
default:
codeStream.if_acmpne(falseLabel);
}
} else {
switch ((this.left.implicitConversion & IMPLICIT_CONVERSION_MASK)
>> 4) { // operand runtime type
case T_int:
codeStream.if_icmpeq(falseLabel);
break;
case T_float:
codeStream.fcmpl();
codeStream.ifeq(falseLabel);
break;
case T_long:
codeStream.lcmp();
codeStream.ifeq(falseLabel);
break;
case T_double:
codeStream.dcmpl();
codeStream.ifeq(falseLabel);
break;
default:
codeStream.if_acmpeq(falseLabel);
}
}
// comparison is TRUE
codeStream.iconst_1();
if ((this.bits & IsReturnedValue) != 0) {
codeStream.generateImplicitConversion(this.implicitConversion);
codeStream.generateReturnBytecode(this);
// comparison is FALSE
falseLabel.place();
codeStream.iconst_0();
} else {
BranchLabel endLabel = new BranchLabel(codeStream);
codeStream.goto_(endLabel);
codeStream.decrStackSize(1);
// comparison is FALSE
falseLabel.place();
codeStream.iconst_0();
endLabel.place();
}
}
}
/**
* Boolean generation for == with boolean operands
*
* <p>Note this code does not optimize conditional constants !!!!
*/
public void generateBooleanEqual(
BlockScope currentScope, CodeStream codeStream, boolean valueRequired) {
// optimized cases: <something equivalent to true> == x, <something equivalent to false> == x,
// optimized cases: <something equivalent to false> != x, <something equivalent to true> != x,
boolean isEqualOperator = ((this.bits & OperatorMASK) >> OperatorSHIFT) == EQUAL_EQUAL;
Constant cst = this.left.optimizedBooleanConstant();
if (cst != Constant.NotAConstant) {
Constant rightCst = this.right.optimizedBooleanConstant();
if (rightCst != Constant.NotAConstant) {
// <something equivalent to true> == <something equivalent to true>, <something equivalent
// to false> != <something equivalent to true>
// <something equivalent to true> == <something equivalent to false>, <something equivalent
// to false> != <something equivalent to false>
this.left.generateCode(currentScope, codeStream, false);
this.right.generateCode(currentScope, codeStream, false);
if (valueRequired) {
boolean leftBool = cst.booleanValue();
boolean rightBool = rightCst.booleanValue();
if (isEqualOperator) {
if (leftBool == rightBool) {
codeStream.iconst_1();
} else {
codeStream.iconst_0();
}
} else {
if (leftBool != rightBool) {
codeStream.iconst_1();
} else {
codeStream.iconst_0();
}
}
}
} else if (cst.booleanValue() == isEqualOperator) {
// <something equivalent to true> == x, <something equivalent to false> != x
this.left.generateCode(currentScope, codeStream, false);
this.right.generateCode(currentScope, codeStream, valueRequired);
} else {
// <something equivalent to false> == x, <something equivalent to true> != x
if (valueRequired) {
BranchLabel falseLabel = new BranchLabel(codeStream);
this.left.generateCode(currentScope, codeStream, false);
this.right.generateOptimizedBoolean(
currentScope, codeStream, null, falseLabel, valueRequired);
// comparison is TRUE
codeStream.iconst_0();
if ((this.bits & IsReturnedValue) != 0) {
codeStream.generateImplicitConversion(this.implicitConversion);
codeStream.generateReturnBytecode(this);
// comparison is FALSE
falseLabel.place();
codeStream.iconst_1();
} else {
BranchLabel endLabel = new BranchLabel(codeStream);
codeStream.goto_(endLabel);
codeStream.decrStackSize(1);
// comparison is FALSE
falseLabel.place();
codeStream.iconst_1();
endLabel.place();
}
} else {
this.left.generateCode(currentScope, codeStream, false);
this.right.generateCode(currentScope, codeStream, false);
}
// left.generateCode(currentScope, codeStream, false);
// right.generateCode(currentScope, codeStream, valueRequired);
// if (valueRequired) {
// codeStream.iconst_1();
// codeStream.ixor(); // negate
// }
}
return;
}
cst = this.right.optimizedBooleanConstant();
if (cst != Constant.NotAConstant) {
if (cst.booleanValue() == isEqualOperator) {
// x == <something equivalent to true>, x != <something equivalent to false>
this.left.generateCode(currentScope, codeStream, valueRequired);
this.right.generateCode(currentScope, codeStream, false);
} else {
// x == <something equivalent to false>, x != <something equivalent to true>
if (valueRequired) {
BranchLabel falseLabel = new BranchLabel(codeStream);
this.left.generateOptimizedBoolean(
currentScope, codeStream, null, falseLabel, valueRequired);
this.right.generateCode(currentScope, codeStream, false);
// comparison is TRUE
codeStream.iconst_0();
if ((this.bits & IsReturnedValue) != 0) {
codeStream.generateImplicitConversion(this.implicitConversion);
codeStream.generateReturnBytecode(this);
// comparison is FALSE
falseLabel.place();
codeStream.iconst_1();
} else {
BranchLabel endLabel = new BranchLabel(codeStream);
codeStream.goto_(endLabel);
codeStream.decrStackSize(1);
// comparison is FALSE
falseLabel.place();
codeStream.iconst_1();
endLabel.place();
}
} else {
this.left.generateCode(currentScope, codeStream, false);
this.right.generateCode(currentScope, codeStream, false);
}
// left.generateCode(currentScope, codeStream, valueRequired);
// right.generateCode(currentScope, codeStream, false);
// if (valueRequired) {
// codeStream.iconst_1();
// codeStream.ixor(); // negate
// }
}
return;
}
// default case
this.left.generateCode(currentScope, codeStream, valueRequired);
this.right.generateCode(currentScope, codeStream, valueRequired);
if (valueRequired) {
if (isEqualOperator) {
BranchLabel falseLabel;
codeStream.if_icmpne(falseLabel = new BranchLabel(codeStream));
// comparison is TRUE
codeStream.iconst_1();
if ((this.bits & IsReturnedValue) != 0) {
codeStream.generateImplicitConversion(this.implicitConversion);
codeStream.generateReturnBytecode(this);
// comparison is FALSE
falseLabel.place();
codeStream.iconst_0();
} else {
BranchLabel endLabel = new BranchLabel(codeStream);
codeStream.goto_(endLabel);
codeStream.decrStackSize(1);
// comparison is FALSE
falseLabel.place();
codeStream.iconst_0();
endLabel.place();
}
} else {
codeStream.ixor();
}
}
}
/**
* Field reference code generation
*
* @param currentScope org.eclipse.jdt.internal.compiler.lookup.BlockScope
* @param codeStream org.eclipse.jdt.internal.compiler.codegen.CodeStream
* @param valueRequired boolean
*/
public void generateCode(BlockScope currentScope, CodeStream codeStream, boolean valueRequired) {
int pc = codeStream.position;
if (this.constant != Constant.NotAConstant) {
if (valueRequired) {
codeStream.generateConstant(this.constant, this.implicitConversion);
}
codeStream.recordPositionsFrom(pc, this.sourceStart);
return;
}
FieldBinding codegenBinding = this.binding.original();
boolean isStatic = codegenBinding.isStatic();
boolean isThisReceiver = this.receiver instanceof ThisReference;
Constant fieldConstant = codegenBinding.constant();
if (fieldConstant != Constant.NotAConstant) {
if (!isThisReceiver) {
this.receiver.generateCode(currentScope, codeStream, !isStatic);
if (!isStatic) {
codeStream.invokeObjectGetClass();
codeStream.pop();
}
}
if (valueRequired) {
codeStream.generateConstant(fieldConstant, this.implicitConversion);
}
codeStream.recordPositionsFrom(pc, this.sourceStart);
return;
}
if (valueRequired
|| (!isThisReceiver
&& currentScope.compilerOptions().complianceLevel >= ClassFileConstants.JDK1_4)
|| ((this.implicitConversion & TypeIds.UNBOXING) != 0)
|| (this.genericCast != null)) {
this.receiver.generateCode(currentScope, codeStream, !isStatic);
if ((this.bits & NeedReceiverGenericCast) != 0) {
codeStream.checkcast(this.actualReceiverType);
}
pc = codeStream.position;
if (codegenBinding.declaringClass == null) { // array length
codeStream.arraylength();
if (valueRequired) {
codeStream.generateImplicitConversion(this.implicitConversion);
} else {
// could occur if !valueRequired but compliance >= 1.4
codeStream.pop();
}
} else {
if (this.syntheticAccessors == null
|| this.syntheticAccessors[FieldReference.READ] == null) {
TypeBinding constantPoolDeclaringClass =
CodeStream.getConstantPoolDeclaringClass(
currentScope,
codegenBinding,
this.actualReceiverType,
this.receiver.isImplicitThis());
if (isStatic) {
codeStream.fieldAccess(
Opcodes.OPC_getstatic, codegenBinding, constantPoolDeclaringClass);
} else {
codeStream.fieldAccess(
Opcodes.OPC_getfield, codegenBinding, constantPoolDeclaringClass);
}
} else {
codeStream.invoke(
Opcodes.OPC_invokestatic,
this.syntheticAccessors[FieldReference.READ],
null /* default declaringClass */);
}
// required cast must occur even if no value is required
if (this.genericCast != null) codeStream.checkcast(this.genericCast);
if (valueRequired) {
codeStream.generateImplicitConversion(this.implicitConversion);
} else {
boolean isUnboxing = (this.implicitConversion & TypeIds.UNBOXING) != 0;
// conversion only generated if unboxing
if (isUnboxing) codeStream.generateImplicitConversion(this.implicitConversion);
switch (isUnboxing ? postConversionType(currentScope).id : codegenBinding.type.id) {
case T_long:
case T_double:
codeStream.pop2();
break;
default:
codeStream.pop();
}
}
}
} else {
if (isThisReceiver) {
if (isStatic) {
// if no valueRequired, still need possible side-effects of <clinit> invocation, if field
// belongs to different class
if (this.binding.original().declaringClass != this.actualReceiverType.erasure()) {
MethodBinding accessor =
this.syntheticAccessors == null
? null
: this.syntheticAccessors[FieldReference.READ];
if (accessor == null) {
TypeBinding constantPoolDeclaringClass =
CodeStream.getConstantPoolDeclaringClass(
currentScope,
codegenBinding,
this.actualReceiverType,
this.receiver.isImplicitThis());
codeStream.fieldAccess(
Opcodes.OPC_getstatic, codegenBinding, constantPoolDeclaringClass);
} else {
codeStream.invoke(
Opcodes.OPC_invokestatic, accessor, null /* default declaringClass */);
}
switch (codegenBinding.type.id) {
case T_long:
case T_double:
codeStream.pop2();
break;
default:
codeStream.pop();
}
}
}
} else {
this.receiver.generateCode(currentScope, codeStream, !isStatic);
if (!isStatic) {
codeStream.invokeObjectGetClass(); // perform null check
codeStream.pop();
}
}
}
codeStream.recordPositionsFrom(pc, this.sourceEnd);
}
/**
* MessageSend code generation
*
* @param currentScope org.eclipse.jdt.internal.compiler.lookup.BlockScope
* @param codeStream org.eclipse.jdt.internal.compiler.codegen.CodeStream
* @param valueRequired boolean
*/
public void generateCode(BlockScope currentScope, CodeStream codeStream, boolean valueRequired) {
int pc = codeStream.position;
// generate receiver/enclosing instance access
MethodBinding codegenBinding =
this.binding instanceof PolymorphicMethodBinding ? this.binding : this.binding.original();
boolean isStatic = codegenBinding.isStatic();
if (isStatic) {
this.receiver.generateCode(currentScope, codeStream, false);
} else if ((this.bits & ASTNode.DepthMASK) != 0
&& this.receiver.isImplicitThis()) { // outer access ?
// outer method can be reached through emulation if implicit access
ReferenceBinding targetType =
currentScope
.enclosingSourceType()
.enclosingTypeAt((this.bits & ASTNode.DepthMASK) >> ASTNode.DepthSHIFT);
Object[] path =
currentScope.getEmulationPath(
targetType, true /*only exact match*/, false /*consider enclosing arg*/);
codeStream.generateOuterAccess(path, this, targetType, currentScope);
} else {
this.receiver.generateCode(currentScope, codeStream, true);
if ((this.bits & NeedReceiverGenericCast) != 0) {
codeStream.checkcast(this.actualReceiverType);
}
}
codeStream.recordPositionsFrom(pc, this.sourceStart);
// generate arguments
generateArguments(this.binding, this.arguments, currentScope, codeStream);
pc = codeStream.position;
// actual message invocation
if (this.syntheticAccessor == null) {
TypeBinding constantPoolDeclaringClass =
CodeStream.getConstantPoolDeclaringClass(
currentScope,
codegenBinding,
this.actualReceiverType,
this.receiver.isImplicitThis());
if (isStatic) {
codeStream.invoke(Opcodes.OPC_invokestatic, codegenBinding, constantPoolDeclaringClass);
} else if ((this.receiver.isSuper()) || codegenBinding.isPrivate()) {
codeStream.invoke(Opcodes.OPC_invokespecial, codegenBinding, constantPoolDeclaringClass);
} else if (constantPoolDeclaringClass.isInterface()) { // interface or annotation type
codeStream.invoke(Opcodes.OPC_invokeinterface, codegenBinding, constantPoolDeclaringClass);
} else {
codeStream.invoke(Opcodes.OPC_invokevirtual, codegenBinding, constantPoolDeclaringClass);
}
} else {
codeStream.invoke(
Opcodes.OPC_invokestatic, this.syntheticAccessor, null /* default declaringClass */);
}
// required cast must occur even if no value is required
if (this.valueCast != null) codeStream.checkcast(this.valueCast);
if (valueRequired) {
// implicit conversion if necessary
codeStream.generateImplicitConversion(this.implicitConversion);
} else {
boolean isUnboxing = (this.implicitConversion & TypeIds.UNBOXING) != 0;
// conversion only generated if unboxing
if (isUnboxing) codeStream.generateImplicitConversion(this.implicitConversion);
switch (isUnboxing ? postConversionType(currentScope).id : codegenBinding.returnType.id) {
case T_long:
case T_double:
codeStream.pop2();
break;
case T_void:
break;
default:
codeStream.pop();
}
}
codeStream.recordPositionsFrom(
pc, (int) (this.nameSourcePosition >>> 32)); // highlight selector
}
