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

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

import org.eclipse.jdt.internal.compiler.ast.PrefixExpression; //导入依赖的package包/类
@Override
public void endVisit(PrefixExpression x, BlockScope scope) {
  try {
    SourceInfo info = makeSourceInfo(x);
    JUnaryOperator op;
    switch (x.operator) {
      case OperatorIds.MINUS:
        op = JUnaryOperator.DEC;
        break;

      case OperatorIds.PLUS:
        op = JUnaryOperator.INC;
        break;

      default:
        throw new InternalCompilerException("Unexpected prefix operator");
    }

    JExpression lhs = pop(x.lhs);
    push(new JPrefixOperation(info, op, lhs));
  } catch (Throwable e) {
    throw translateException(x, e);
  }
}
 

import org.eclipse.jdt.internal.compiler.ast.PrefixExpression; //导入依赖的package包/类
protected void consumeUnaryExpression(int op, boolean post) {
	// PreIncrementExpression ::= '++' PushPosition UnaryExpression
	// PreDecrementExpression ::= '--' PushPosition UnaryExpression

	// ++ and -- operators
	//optimize the push/pop

	//this.intStack has the position of the operator when prefix

	Expression leftHandSide = this.expressionStack[this.expressionPtr];
	if (leftHandSide instanceof Reference) {
		// ++foo()++ is unvalid
		if (post) {
			this.expressionStack[this.expressionPtr] =
				new PostfixExpression(
					leftHandSide,
					IntLiteral.One,
					op,
					this.endStatementPosition);
		} else {
			this.expressionStack[this.expressionPtr] =
				new PrefixExpression(
					leftHandSide,
					IntLiteral.One,
					op,
					this.intStack[this.intPtr--]);
		}
	} else {
		//the ++ or the -- is NOT taken into account if code gen proceeds
		if (!post) {
			this.intPtr--;
		}
		if(!this.statementRecoveryActivated) problemReporter().invalidUnaryExpression(leftHandSide);
	}
}
 

import org.eclipse.jdt.internal.compiler.ast.PrefixExpression; //导入依赖的package包/类
@Override public boolean visit(PrefixExpression node, BlockScope scope) {
	fixPositions(setGeneratedBy(node, source));
	return super.visit(node, scope);
}
 

import org.eclipse.jdt.internal.compiler.ast.PrefixExpression; //导入依赖的package包/类
public boolean visit(PrefixExpression prefixExpression, BlockScope scope) {
	addRealFragment(prefixExpression);
	return false;
}
 

import org.eclipse.jdt.internal.compiler.ast.PrefixExpression; //导入依赖的package包/类
@Override public boolean visit(PrefixExpression node, BlockScope scope) {
	setGeneratedBy(node, source);
	applyOffsetExpression(node);
	return super.visit(node, scope);
}