Java OperatorIds类代码示例

import org.eclipse.jdt.internal.compiler.ast.OperatorIds; //导入依赖的package包/类
public IfStatement generateCompareFloatOrDouble(Expression thisRef, Expression otherRef, char[] floatOrDouble, ASTNode source) {
	int pS = source.sourceStart, pE = source.sourceEnd;
	/* if (Float.compare(fieldName, other.fieldName) != 0) return false */
	MessageSend floatCompare = new MessageSend();
	floatCompare.sourceStart = pS; floatCompare.sourceEnd = pE;
	setGeneratedBy(floatCompare, source);
	floatCompare.receiver = generateQualifiedNameRef(source, TypeConstants.JAVA, TypeConstants.LANG, floatOrDouble);
	floatCompare.selector = "compare".toCharArray();
	floatCompare.arguments = new Expression[] {thisRef, otherRef};
	IntLiteral int0 = makeIntLiteral("0".toCharArray(), source);
	EqualExpression ifFloatCompareIsNot0 = new EqualExpression(floatCompare, int0, OperatorIds.NOT_EQUAL);
	ifFloatCompareIsNot0.sourceStart = pS; ifFloatCompareIsNot0.sourceEnd = pE;
	setGeneratedBy(ifFloatCompareIsNot0, source);
	FalseLiteral falseLiteral = new FalseLiteral(pS, pE);
	setGeneratedBy(falseLiteral, source);
	ReturnStatement returnFalse = new ReturnStatement(falseLiteral, pS, pE);
	setGeneratedBy(returnFalse, source);
	IfStatement ifStatement = new IfStatement(ifFloatCompareIsNot0, returnFalse, pS, pE);
	setGeneratedBy(ifStatement, source);
	return ifStatement;
}
 

import org.eclipse.jdt.internal.compiler.ast.OperatorIds; //导入依赖的package包/类
/** Give 2 clones! */
public Expression longToIntForHashCode(Expression ref1, Expression ref2, ASTNode source) {
	int pS = source.sourceStart, pE = source.sourceEnd;
	/* (int)(ref >>> 32 ^ ref) */
	IntLiteral int32 = makeIntLiteral("32".toCharArray(), source);
	BinaryExpression higherBits = new BinaryExpression(ref1, int32, OperatorIds.UNSIGNED_RIGHT_SHIFT);
	setGeneratedBy(higherBits, source);
	BinaryExpression xorParts = new BinaryExpression(ref2, higherBits, OperatorIds.XOR);
	setGeneratedBy(xorParts, source);
	TypeReference intRef = TypeReference.baseTypeReference(TypeIds.T_int, 0);
	intRef.sourceStart = pS; intRef.sourceEnd = pE;
	setGeneratedBy(intRef, source);
	CastExpression expr = makeCastExpression(xorParts, intRef, source);
	expr.sourceStart = pS; expr.sourceEnd = pE;
	return expr;
}
 

import org.eclipse.jdt.internal.compiler.ast.OperatorIds; //导入依赖的package包/类
/** Generates 'this.<em>name</em>.size()' as an expression; if nullGuard is true, it's this.name == null ? 0 : this.name.size(). */
protected Expression getSize(EclipseNode builderType, char[] name, boolean nullGuard) {
	MessageSend invoke = new MessageSend();
	ThisReference thisRef = new ThisReference(0, 0);
	FieldReference thisDotName = new FieldReference(name, 0L);
	thisDotName.receiver = thisRef;
	invoke.receiver = thisDotName;
	invoke.selector = SIZE_TEXT;
	if (!nullGuard) return invoke;
	
	ThisReference cdnThisRef = new ThisReference(0, 0);
	FieldReference cdnThisDotName = new FieldReference(name, 0L);
	cdnThisDotName.receiver = cdnThisRef;
	NullLiteral nullLiteral = new NullLiteral(0, 0);
	EqualExpression isNull = new EqualExpression(cdnThisDotName, nullLiteral, OperatorIds.EQUAL_EQUAL);
	IntLiteral zeroLiteral = makeIntLiteral(new char[] {'0'}, null);
	ConditionalExpression conditional = new ConditionalExpression(isNull, zeroLiteral, invoke);
	return conditional;
}
 

import org.eclipse.jdt.internal.compiler.ast.OperatorIds; //导入依赖的package包/类
public char[] returnVarNameIfNullCheck(Statement stat) {
	if (!(stat instanceof IfStatement)) return null;
	
	/* Check that the if's statement is a throw statement, possibly in a block. */ {
		Statement then = ((IfStatement) stat).thenStatement;
		if (then instanceof Block) {
			Statement[] blockStatements = ((Block) then).statements;
			if (blockStatements == null || blockStatements.length == 0) return null;
			then = blockStatements[0];
		}
		
		if (!(then instanceof ThrowStatement)) return null;
	}
	
	/* Check that the if's conditional is like 'x == null'. Return from this method (don't generate
	   a nullcheck) if 'x' is equal to our own variable's name: There's already a nullcheck here. */ {
		Expression cond = ((IfStatement) stat).condition;
		if (!(cond instanceof EqualExpression)) return null;
		EqualExpression bin = (EqualExpression) cond;
		int operatorId = ((bin.bits & ASTNode.OperatorMASK) >> ASTNode.OperatorSHIFT);
		if (operatorId != OperatorIds.EQUAL_EQUAL) return null;
		if (!(bin.left instanceof SingleNameReference)) return null;
		if (!(bin.right instanceof NullLiteral)) return null;
		return ((SingleNameReference) bin.left).token;
	}
}
 

import org.eclipse.jdt.internal.compiler.ast.OperatorIds; //导入依赖的package包/类
private void generateClearMethod(TypeReference returnType, Statement returnStatement, SingularData data, EclipseNode builderType) {
	MethodDeclaration md = new MethodDeclaration(((CompilationUnitDeclaration) builderType.top().get()).compilationResult);
	md.bits |= ECLIPSE_DO_NOT_TOUCH_FLAG;
	md.modifiers = ClassFileConstants.AccPublic;
	
	FieldReference thisDotField = new FieldReference(data.getPluralName(), 0L);
	thisDotField.receiver = new ThisReference(0, 0);
	FieldReference thisDotField2 = new FieldReference(data.getPluralName(), 0L);
	thisDotField2.receiver = new ThisReference(0, 0);
	md.selector = HandlerUtil.buildAccessorName("clear", new String(data.getPluralName())).toCharArray();
	MessageSend clearMsg = new MessageSend();
	clearMsg.receiver = thisDotField2;
	clearMsg.selector = "clear".toCharArray();
	Statement clearStatement = new IfStatement(new EqualExpression(thisDotField, new NullLiteral(0, 0), OperatorIds.NOT_EQUAL), clearMsg, 0, 0);
	md.statements = returnStatement != null ? new Statement[] {clearStatement, returnStatement} : new Statement[] {clearStatement};
	md.returnType = returnType;
	injectMethod(builderType, md);
}
 

import org.eclipse.jdt.internal.compiler.ast.OperatorIds; //导入依赖的package包/类
/**
 * @see org.eclipse.jdt.internal.compiler.ASTVisitor#visit(org.eclipse.jdt.internal.compiler.ast.PostfixExpression, org.eclipse.jdt.internal.compiler.lookup.BlockScope)
 */
public boolean visit(
	PostfixExpression postfixExpression,
	BlockScope scope) {

	final int numberOfParens = (postfixExpression.bits & ASTNode.ParenthesizedMASK) >> ASTNode.ParenthesizedSHIFT;
	if (numberOfParens > 0) {
		manageOpeningParenthesizedExpression(postfixExpression, numberOfParens);
	}
	postfixExpression.lhs.traverse(this, scope);
	int operator = postfixExpression.operator == OperatorIds.PLUS
		? TerminalTokens.TokenNamePLUS_PLUS : TerminalTokens.TokenNameMINUS_MINUS;
	this.scribe.printNextToken(operator, this.preferences.insert_space_before_postfix_operator);
	if (this.preferences.insert_space_after_postfix_operator) {
		this.scribe.space();
	}
	if (numberOfParens > 0) {
		manageClosingParenthesizedExpression(postfixExpression, numberOfParens);
	}
	return false;
}
 

import org.eclipse.jdt.internal.compiler.ast.OperatorIds; //导入依赖的package包/类
public Expression convert(org.eclipse.jdt.internal.compiler.ast.EqualExpression expression) {
	InfixExpression infixExpression = new InfixExpression(this.ast);
	if (this.resolveBindings) {
		recordNodes(infixExpression, expression);
	}
	Expression leftExpression = convert(expression.left);
	infixExpression.setLeftOperand(leftExpression);
	infixExpression.setRightOperand(convert(expression.right));
	int startPosition = leftExpression.getStartPosition();
	infixExpression.setSourceRange(startPosition, expression.sourceEnd - startPosition + 1);
	switch ((expression.bits & org.eclipse.jdt.internal.compiler.ast.ASTNode.OperatorMASK) >> org.eclipse.jdt.internal.compiler.ast.ASTNode.OperatorSHIFT) {
		case org.eclipse.jdt.internal.compiler.ast.OperatorIds.EQUAL_EQUAL :
			infixExpression.setOperator(InfixExpression.Operator.EQUALS);
			break;
		case org.eclipse.jdt.internal.compiler.ast.OperatorIds.NOT_EQUAL :
			infixExpression.setOperator(InfixExpression.Operator.NOT_EQUALS);
	}
	return infixExpression;

}
 

import org.eclipse.jdt.internal.compiler.ast.OperatorIds; //导入依赖的package包/类
@Override
public void endVisit(EqualExpression x, BlockScope scope) {
  JBinaryOperator op;
  switch ((x.bits & ASTNode.OperatorMASK) >> ASTNode.OperatorSHIFT) {
    case OperatorIds.EQUAL_EQUAL:
      op = JBinaryOperator.EQ;
      break;
    case OperatorIds.NOT_EQUAL:
      op = JBinaryOperator.NEQ;
      break;
    default:
      throw translateException(x, new InternalCompilerException(
          "Unexpected operator for EqualExpression"));
  }
  pushBinaryOp(x, op);
}
 

import org.eclipse.jdt.internal.compiler.ast.OperatorIds; //导入依赖的package包/类
/**
 * Generates a new statement that checks if the given variable is null, and if so, throws a {@code NullPointerException} with the
 * variable name as message.
 */
public static Statement generateNullCheck(AbstractVariableDeclaration variable, ASTNode source) {
	int pS = source.sourceStart, pE = source.sourceEnd;
	long p = (long)pS << 32 | pE;
	
	if (isPrimitive(variable.type)) return null;
	AllocationExpression exception = new AllocationExpression();
	setGeneratedBy(exception, source);
	exception.type = new QualifiedTypeReference(fromQualifiedName("java.lang.NullPointerException"), new long[]{p, p, p});
	setGeneratedBy(exception.type, source);
	exception.arguments = new Expression[] { new StringLiteral(variable.name, pS, pE, 0)};
	setGeneratedBy(exception.arguments[0], source);
	ThrowStatement throwStatement = new ThrowStatement(exception, pS, pE);
	setGeneratedBy(throwStatement, source);
	
	SingleNameReference varName = new SingleNameReference(variable.name, p);
	setGeneratedBy(varName, source);
	NullLiteral nullLiteral = new NullLiteral(pS, pE);
	setGeneratedBy(nullLiteral, source);
	EqualExpression equalExpression = new EqualExpression(varName, nullLiteral, OperatorIds.EQUAL_EQUAL);
	equalExpression.sourceStart = pS; equalExpression.statementEnd = equalExpression.sourceEnd = pE;
	setGeneratedBy(equalExpression, source);
	IfStatement ifStatement = new IfStatement(equalExpression, throwStatement, 0, 0);
	setGeneratedBy(ifStatement, source);
	return ifStatement;
}
 

import org.eclipse.jdt.internal.compiler.ast.OperatorIds; //导入依赖的package包/类
private IfStatement generateCompareFloatOrDouble(Expression thisRef, Expression otherRef, char[] floatOrDouble, ASTNode source) {
	int pS = source.sourceStart, pE = source.sourceEnd;
	/* if (Float.compare(fieldName, other.fieldName) != 0) return false */
	MessageSend floatCompare = new MessageSend();
	floatCompare.sourceStart = pS; floatCompare.sourceEnd = pE;
	setGeneratedBy(floatCompare, source);
	floatCompare.receiver = generateQualifiedNameRef(source, TypeConstants.JAVA, TypeConstants.LANG, floatOrDouble);
	floatCompare.selector = "compare".toCharArray();
	floatCompare.arguments = new Expression[] {thisRef, otherRef};
	IntLiteral int0 = makeIntLiteral("0".toCharArray(), source);
	EqualExpression ifFloatCompareIsNot0 = new EqualExpression(floatCompare, int0, OperatorIds.NOT_EQUAL);
	ifFloatCompareIsNot0.sourceStart = pS; ifFloatCompareIsNot0.sourceEnd = pE;
	setGeneratedBy(ifFloatCompareIsNot0, source);
	FalseLiteral falseLiteral = new FalseLiteral(pS, pE);
	setGeneratedBy(falseLiteral, source);
	ReturnStatement returnFalse = new ReturnStatement(falseLiteral, pS, pE);
	setGeneratedBy(returnFalse, source);
	IfStatement ifStatement = new IfStatement(ifFloatCompareIsNot0, returnFalse, pS, pE);
	setGeneratedBy(ifStatement, source);
	return ifStatement;
}
 

import org.eclipse.jdt.internal.compiler.ast.OperatorIds; //导入依赖的package包/类
/** Give 2 clones! */
private Expression longToIntForHashCode(Expression ref1, Expression ref2, ASTNode source) {
	int pS = source.sourceStart, pE = source.sourceEnd;
	/* (int)(ref >>> 32 ^ ref) */
	IntLiteral int32 = makeIntLiteral("32".toCharArray(), source);
	BinaryExpression higherBits = new BinaryExpression(ref1, int32, OperatorIds.UNSIGNED_RIGHT_SHIFT);
	setGeneratedBy(higherBits, source);
	BinaryExpression xorParts = new BinaryExpression(ref2, higherBits, OperatorIds.XOR);
	setGeneratedBy(xorParts, source);
	TypeReference intRef = TypeReference.baseTypeReference(TypeIds.T_int, 0);
	intRef.sourceStart = pS; intRef.sourceEnd = pE;
	setGeneratedBy(intRef, source);
	CastExpression expr = makeCastExpression(xorParts, intRef, source);
	expr.sourceStart = pS; expr.sourceEnd = pE;
	return expr;
}
 

import org.eclipse.jdt.internal.compiler.ast.OperatorIds; //导入依赖的package包/类
protected Statement createConstructBuilderVarIfNeeded(SingularData data, EclipseNode builderType) {
	FieldReference thisDotField = new FieldReference(data.getPluralName(), 0L);
	thisDotField.receiver = new ThisReference(0, 0);
	FieldReference thisDotField2 = new FieldReference(data.getPluralName(), 0L);
	thisDotField2.receiver = new ThisReference(0, 0);
	Expression cond = new EqualExpression(thisDotField, new NullLiteral(0, 0), OperatorIds.EQUAL_EQUAL);
	
	MessageSend createBuilderInvoke = new MessageSend();
	char[][] tokenizedName = makeGuavaTypeName(getSimpleTargetTypeName(data), false);
	createBuilderInvoke.receiver = new QualifiedNameReference(tokenizedName, NULL_POSS, 0, 0);
	createBuilderInvoke.selector = getBuilderMethodName(data);
	return new IfStatement(cond, new Assignment(thisDotField2, createBuilderInvoke, 0), 0, 0);
}
 

import org.eclipse.jdt.internal.compiler.ast.OperatorIds; //导入依赖的package包/类
private void generateClearMethod(TypeReference returnType, Statement returnStatement, SingularData data, EclipseNode builderType) {
	MethodDeclaration md = new MethodDeclaration(((CompilationUnitDeclaration) builderType.top().get()).compilationResult);
	md.bits |= ECLIPSE_DO_NOT_TOUCH_FLAG;
	md.modifiers = ClassFileConstants.AccPublic;
	
	String pN = new String(data.getPluralName());
	char[] keyFieldName = (pN + "$key").toCharArray();
	char[] valueFieldName = (pN + "$value").toCharArray();
	
	FieldReference thisDotField = new FieldReference(keyFieldName, 0L);
	thisDotField.receiver = new ThisReference(0, 0);
	FieldReference thisDotField2 = new FieldReference(keyFieldName, 0L);
	thisDotField2.receiver = new ThisReference(0, 0);
	FieldReference thisDotField3 = new FieldReference(valueFieldName, 0L);
	thisDotField3.receiver = new ThisReference(0, 0);
	md.selector = HandlerUtil.buildAccessorName("clear", new String(data.getPluralName())).toCharArray();
	MessageSend clearMsg1 = new MessageSend();
	clearMsg1.receiver = thisDotField2;
	clearMsg1.selector = "clear".toCharArray();
	MessageSend clearMsg2 = new MessageSend();
	clearMsg2.receiver = thisDotField3;
	clearMsg2.selector = "clear".toCharArray();
	Block clearMsgs = new Block(2);
	clearMsgs.statements = new Statement[] {clearMsg1, clearMsg2};
	Statement clearStatement = new IfStatement(new EqualExpression(thisDotField, new NullLiteral(0, 0), OperatorIds.NOT_EQUAL), clearMsgs, 0, 0);
	md.statements = returnStatement != null ? new Statement[] {clearStatement, returnStatement} : new Statement[] {clearStatement};
	md.returnType = returnType;
	injectMethod(builderType, md);
}
 

import org.eclipse.jdt.internal.compiler.ast.OperatorIds; //导入依赖的package包/类
/**
 * Generates a new statement that checks if the given variable is null, and if so, throws a specified exception with the
 * variable name as message.
 * 
 * @param exName The name of the exception to throw; normally {@code java.lang.NullPointerException}.
 */
public static Statement generateNullCheck(AbstractVariableDeclaration variable, EclipseNode sourceNode) {
	NullCheckExceptionType exceptionType = sourceNode.getAst().readConfiguration(ConfigurationKeys.NON_NULL_EXCEPTION_TYPE);
	if (exceptionType == null) exceptionType = NullCheckExceptionType.NULL_POINTER_EXCEPTION;
	
	ASTNode source = sourceNode.get();
	
	int pS = source.sourceStart, pE = source.sourceEnd;
	long p = (long)pS << 32 | pE;
	
	if (isPrimitive(variable.type)) return null;
	AllocationExpression exception = new AllocationExpression();
	setGeneratedBy(exception, source);
	int partCount = 1;
	String exceptionTypeStr = exceptionType.getExceptionType();
	for (int i = 0; i < exceptionTypeStr.length(); i++) if (exceptionTypeStr.charAt(i) == '.') partCount++;
	long[] ps = new long[partCount];
	Arrays.fill(ps, 0L);
	exception.type = new QualifiedTypeReference(fromQualifiedName(exceptionTypeStr), ps);
	setGeneratedBy(exception.type, source);
	exception.arguments = new Expression[] {
			new StringLiteral(exceptionType.toExceptionMessage(new String(variable.name)).toCharArray(), pS, pE, 0)
	};
	setGeneratedBy(exception.arguments[0], source);
	ThrowStatement throwStatement = new ThrowStatement(exception, pS, pE);
	setGeneratedBy(throwStatement, source);
	
	SingleNameReference varName = new SingleNameReference(variable.name, p);
	setGeneratedBy(varName, source);
	NullLiteral nullLiteral = new NullLiteral(pS, pE);
	setGeneratedBy(nullLiteral, source);
	EqualExpression equalExpression = new EqualExpression(varName, nullLiteral, OperatorIds.EQUAL_EQUAL);
	equalExpression.sourceStart = pS; equalExpression.statementEnd = equalExpression.sourceEnd = pE;
	setGeneratedBy(equalExpression, source);
	Block throwBlock = new Block(0);
	throwBlock.statements = new Statement[] {throwStatement};
	throwBlock.sourceStart = pS; throwBlock.sourceEnd = pE;
	setGeneratedBy(throwBlock, source);
	IfStatement ifStatement = new IfStatement(equalExpression, throwBlock, 0, 0);
	setGeneratedBy(ifStatement, source);
	return ifStatement;
}
 

import org.eclipse.jdt.internal.compiler.ast.OperatorIds; //导入依赖的package包/类
public MethodDeclaration createWither(TypeDeclaration parent, EclipseNode fieldNode, String name, int modifier, EclipseNode sourceNode, List<Annotation> onMethod, List<Annotation> onParam, boolean makeAbstract ) {
	ASTNode source = sourceNode.get();
	if (name == null) return null;
	FieldDeclaration field = (FieldDeclaration) fieldNode.get();
	int pS = source.sourceStart, pE = source.sourceEnd;
	long p = (long) pS << 32 | pE;
	MethodDeclaration method = new MethodDeclaration(parent.compilationResult);
	if (makeAbstract) modifier = modifier | ClassFileConstants.AccAbstract | ExtraCompilerModifiers.AccSemicolonBody;
	method.modifiers = modifier;
	method.returnType = cloneSelfType(fieldNode, source);
	if (method.returnType == null) return null;
	
	Annotation[] deprecated = null;
	if (isFieldDeprecated(fieldNode)) {
		deprecated = new Annotation[] { generateDeprecatedAnnotation(source) };
	}
	method.annotations = copyAnnotations(source, onMethod.toArray(new Annotation[0]), deprecated);
	Argument param = new Argument(field.name, p, copyType(field.type, source), ClassFileConstants.AccFinal);
	param.sourceStart = pS; param.sourceEnd = pE;
	method.arguments = new Argument[] { param };
	method.selector = name.toCharArray();
	method.binding = null;
	method.thrownExceptions = null;
	method.typeParameters = null;
	method.bits |= ECLIPSE_DO_NOT_TOUCH_FLAG;
	
	Annotation[] nonNulls = findAnnotations(field, NON_NULL_PATTERN);
	Annotation[] nullables = findAnnotations(field, NULLABLE_PATTERN);
	
	if (!makeAbstract) {
		List<Expression> args = new ArrayList<Expression>();
		for (EclipseNode child : fieldNode.up().down()) {
			if (child.getKind() != Kind.FIELD) continue;
			FieldDeclaration childDecl = (FieldDeclaration) child.get();
			// Skip fields that start with $
			if (childDecl.name != null && childDecl.name.length > 0 && childDecl.name[0] == '$') continue;
			long fieldFlags = childDecl.modifiers;
			// Skip static fields.
			if ((fieldFlags & ClassFileConstants.AccStatic) != 0) continue;
			// Skip initialized final fields.
			if (((fieldFlags & ClassFileConstants.AccFinal) != 0) && childDecl.initialization != null) continue;
			if (child.get() == fieldNode.get()) {
				args.add(new SingleNameReference(field.name, p));
			} else {
				args.add(createFieldAccessor(child, FieldAccess.ALWAYS_FIELD, source));
			}
		}
		
		AllocationExpression constructorCall = new AllocationExpression();
		constructorCall.arguments = args.toArray(new Expression[0]);
		constructorCall.type = cloneSelfType(fieldNode, source);
		
		Expression identityCheck = new EqualExpression(
				createFieldAccessor(fieldNode, FieldAccess.ALWAYS_FIELD, source),
				new SingleNameReference(field.name, p),
				OperatorIds.EQUAL_EQUAL);
		ThisReference thisRef = new ThisReference(pS, pE);
		Expression conditional = new ConditionalExpression(identityCheck, thisRef, constructorCall);
		Statement returnStatement = new ReturnStatement(conditional, pS, pE);
		method.bodyStart = method.declarationSourceStart = method.sourceStart = source.sourceStart;
		method.bodyEnd = method.declarationSourceEnd = method.sourceEnd = source.sourceEnd;
		
		List<Statement> statements = new ArrayList<Statement>(5);
		if (nonNulls.length > 0) {
			Statement nullCheck = generateNullCheck(field, sourceNode);
			if (nullCheck != null) statements.add(nullCheck);
		}
		statements.add(returnStatement);
		
		method.statements = statements.toArray(new Statement[0]);
	}
	param.annotations = copyAnnotations(source, nonNulls, nullables, onParam.toArray(new Annotation[0]));
	
	method.traverse(new SetGeneratedByVisitor(source), parent.scope);
	return method;
}