本文整理汇总了Java中com.sun.source.util.SimpleTreeVisitor类的典型用法代码示例。如果您正苦于以下问题：Java SimpleTreeVisitor类的具体用法？Java SimpleTreeVisitor怎么用？Java SimpleTreeVisitor使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。
SimpleTreeVisitor类属于com.sun.source.util包，在下文中一共展示了SimpleTreeVisitor类的2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: visitAssignment
import com.sun.source.util.SimpleTreeVisitor; //导入依赖的package包/类
/**
* If we're assigning to an identifier then we see if this identifier has the same name as one of the
* non-final params in scope. We only care about assignments to an identifier.
*
* Thus, a = 5; would be flagged by array[0] = "foo" would not be flagged. The left hand side of the assignment
* operation must be an identifier in order for us to flag it.
*
* @param assignmentTree assignment AST node
* @param nonFinalParamsInScope params to check against the LHS of the assignment
*/
@Override
public Void visitAssignment(AssignmentTree assignmentTree, Set<Name> nonFinalParamsInScope) {
if (nonFinalParamsInScope != null && !nonFinalParamsInScope.isEmpty()) {
ExpressionTree variable = assignmentTree.getVariable();
variable.accept(new SimpleTreeVisitor<Void, Void>() {
@Override
public Void visitIdentifier(IdentifierTree node, Void aVoid) {
if (nonFinalParamsInScope.contains(node.getName())) {
// printing a message of type error counts as a compilation error
trees.printMessage(Diagnostic.Kind.ERROR,
String.format("EFFECTIVELY_FINAL: Assignment to param in `%s`", assignmentTree),
node, compilationUnitTree);
}
return null;
}
}, null);
}
return null;
}
示例2: matches
import com.sun.source.util.SimpleTreeVisitor; //导入依赖的package包/类
@Override
public boolean matches(ExpressionTree t, VisitorState state) {
return firstNonNull(
t.accept(
new SimpleTreeVisitor<Boolean, Void>() {
@Override
public Boolean visitConditionalExpression(
ConditionalExpressionTree tree, Void unused) {
return reduce(
tree.getTrueExpression().accept(this, null),
tree.getFalseExpression().accept(this, null));
}
@Override
protected Boolean defaultAction(Tree node, Void aVoid) {
Object constValue = ASTHelpers.constValue(node);
return constValue != null;
}
public Boolean reduce(Boolean lhs, Boolean rhs) {
return firstNonNull(lhs, false) && firstNonNull(rhs, false);
}
},
null),
false);
}