本文整理汇总了Java中org.eclipse.jdt.internal.compiler.ast.ASTNode.OperatorSHIFT方法的典型用法代码示例。如果您正苦于以下问题：Java ASTNode.OperatorSHIFT方法的具体用法？Java ASTNode.OperatorSHIFT怎么用？Java ASTNode.OperatorSHIFT使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.eclipse.jdt.internal.compiler.ast.ASTNode的用法示例。
在下文中一共展示了ASTNode.OperatorSHIFT方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: returnVarNameIfNullCheck
import org.eclipse.jdt.internal.compiler.ast.ASTNode; //导入方法依赖的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;
}
}