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Code Issues Wiki Activity

Bug 405409 - Formatting namespaces with inactive sections

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Local scanner was peeking tokens from inactive regions confusing
the formatter.

Change-Id: I5975ec1042474be84b897e047a1e59cfc8bfa083
Signed-off-by: Marco Stornelli <marco.stornelli@gmail.com>
This commit is contained in:
Marco Stornelli 2019-03-16 09:12:21 +01:00
parent 695de049db
commit 826a0b2c0e
2 changed files with 56 additions and 3 deletions
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30
core/org.eclipse.cdt.core/src/org/eclipse/cdt/internal/formatter/CodeFormatterVisitor.java
View file

@ -19,6 +19,7 @@ import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.EmptyStackException;
import java.util.Iterator;
import java.util.List;
import java.util.Stack;
@ -401,6 +402,7 @@ public class CodeFormatterVisitor extends ASTVisitor implements ICPPASTVisitor,
}
private final Scanner localScanner;
private List<InactivePosition> fInactivePreprocessorPositions;
final DefaultCodeFormatterOptions preferences;
private final Scribe scribe;
@ -424,6 +426,7 @@ public class CodeFormatterVisitor extends ASTVisitor implements ICPPASTVisitor,
};
this.preferences = preferences;
scribe = new Scribe(this, offset, length);
fInactivePreprocessorPositions = Collections.emptyList();
}
/**
@ -439,8 +442,9 @@ public class CodeFormatterVisitor extends ASTVisitor implements ICPPASTVisitor,
localScanner.setSource(compilationUnitSource);
scribe.initializeScanner(compilationUnitSource);
List<InactivePosition> inactive = collectInactiveCodePositions(unit);
inactive.addAll(collectNoFormatCodePositions(unit));
fInactivePreprocessorPositions = collectInactiveCodePositions(unit);
List<InactivePosition> inactive = collectNoFormatCodePositions(unit);
inactive.addAll(fInactivePreprocessorPositions);
scribe.setSkipInactivePositions(inactive);
fStatus = new MultiStatus(CCorePlugin.PLUGIN_ID, 0, "Formatting problem(s) in '" + unit.getFilePath() + "'", //$NON-NLS-1$//$NON-NLS-2$
@ -4502,14 +4506,34 @@ public class CodeFormatterVisitor extends ASTVisitor implements ICPPASTVisitor,
return peekNextToken(false);
}
/**
* It returns a position range if offset is included into an inactive
* preprocessor region.
* @param offset The offset to be checked
* @return The region if found, null otherwise
*/
private Position getInactivePosAt(int offset) {
for (Iterator<InactivePosition> iter = fInactivePreprocessorPositions.iterator(); iter.hasNext();) {
Position pos = iter.next();
if (pos.includes(offset)) {
return pos;
}
}
return null;
}
private int peekNextToken(boolean ignoreSkip) {
if (!ignoreSkip && scribe.shouldSkip(getCurrentPosition())) {
return Token.tBADCHAR;
}
localScanner.resetTo(getCurrentPosition(), scribe.scannerEndPosition);
int token = localScanner.getNextToken();
while (token == Token.tBLOCKCOMMENT || token == Token.tLINECOMMENT) {
int currentStart = localScanner.getCurrentTokenStartPosition();
Position p = getInactivePosAt(currentStart);
while ((token == Token.tBLOCKCOMMENT || token == Token.tLINECOMMENT) || p != null) {
token = localScanner.getNextToken();
currentStart = localScanner.getCurrentTokenStartPosition();
p = getInactivePosAt(currentStart);
}
return token;
}

29
core/org.eclipse.cdt.ui.tests/ui/org/eclipse/cdt/ui/tests/text/CodeFormatterTest.java
View file

@ -4123,4 +4123,33 @@ public class CodeFormatterTest extends BaseUITestCase {
public void testCastFuncDeclarator2_Bug390324() throws Exception {
assertFormatterResult();
}
//#define ONE
//namespace n1 {
//namespace n2 {
//#ifdef ONE
//int v1;
//#elif defined(TWO)
//int v2;
//#endif
//}
//}
//int main(){return 0;}
//#define ONE
//namespace n1 {
//namespace n2 {
//#ifdef ONE
//int v1;
//#elif defined(TWO)
//int v2;
//#endif
//}
//}
//int main() {
// return 0;
//}
public void testNamespacesWithInactiveSections_Bug405049() throws Exception {
assertFormatterResult();
}
}