/*
* Copyright (C) 2010 The Project Lombok Authors.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package lombok.ast.syntaxChecks;
import static lombok.ast.syntaxChecks.MessageKey.*;
import static lombok.ast.Message.*;
import lombok.ast.Block;
import lombok.ast.Break;
import lombok.ast.Continue;
import lombok.ast.Node;
import lombok.ast.Return;
import lombok.ast.Statement;
import lombok.ast.template.SyntaxCheck;
@SyntaxCheck
public class UnreachableStatementsChecks {
public void unreachablesAfterBreak(Break statement) {
checkForUnreachables(statement);
}
public void unreachablesAfterContinue(Continue statement) {
checkForUnreachables(statement);
}
public void unreachableAfterReturn(Return statement) {
checkForUnreachables(statement);
}
private void checkForUnreachables(Statement n) {
Block b = n.upToBlock();
if (b == null) return;
boolean found = false;
for (Node s : b.rawContents()) {
if (found) {
s.addMessage(error(STATEMENT_UNREACHABLE, "Unreachable code"));
return;
}
if (s == n) found = true;
}
}
}