- enhancement: False branches are displayed as comments.

NEWS.md

@@ -32,6 +32,7 @@ Red Panda C++ Version 2.24
   - fix: Press up/down arrow key in the option dialog's left panel won't switch page.
   - fix: Can't suggest header filename starting with numbers.
   - enhancement: Better layout for compiler options page.
+  - enhancement: False branches are displayed as comments.
 
 Red Panda C++ Version 2.23
 

RedPandaIDE/editor.cpp

@@ -1136,6 +1136,13 @@ void Editor::onPreparePaintHighlightToken(int line, int aChar, const QString &to
         return;
 
     if (mParser && syntaxer()) {
+        if (!mParser->isLineVisible(mFilename, line)) {
+            if (syntaxer()->commentAttribute()->foreground().isValid())
+                foreground = syntaxer()->commentAttribute()->foreground();
+            if (syntaxer()->commentAttribute()->background().isValid())
+                background = syntaxer()->commentAttribute()->background();
+            return;
+        }
         QString lineText = document()->getLine(line-1);
         if (mParser->isIncludeLine(lineText)) {
             if (cursor() == Qt::PointingHandCursor) {

RedPandaIDE/parser/cppparser.cpp

@@ -852,6 +852,15 @@ QString CppParser::getHeaderFileName(const QString &relativeTo, const QString &h
                                projectIncludes);
 }
 
+bool CppParser::isLineVisible(const QString &fileName, int line)
+{
+    QMutexLocker locker(&mMutex);
+    PFileIncludes fileIncludes = mPreprocessor.includesList().value(fileName);
+    if (!fileIncludes)
+        return true;
+    return fileIncludes->isLineVisible(line);
+}
+
 void CppParser::invalidateFile(const QString &fileName)
 {
     if (!mEnabled)

RedPandaIDE/parser/cppparser.h

@@ -104,6 +104,7 @@ public:
     QString getHeaderFileName(const QString& relativeTo, const QString& headerName, bool fromNext=false);// both
 
     void invalidateFile(const QString& fileName);
+    bool isLineVisible(const QString& fileName, int line);
     bool isIncludeLine(const QString &line);
     bool isIncludeNextLine(const QString &line);
     bool isProjectHeaderFile(const QString& fileName);

RedPandaIDE/parser/cpppreprocessor.h

@@ -137,11 +137,19 @@ private:
             return true;
     }
     void setCurrentBranch(bool value){
+        if (value!=getCurrentBranch()) {
+            mCurrentIncludes->branches.insert(mIndex+1,value);
+        }
         mBranchResults.append(value);
     }
     void removeCurrentBranch(){
-        if (mBranchResults.size()>0)
+        bool result = getCurrentBranch();
+        if (mBranchResults.size()>0) {
             mBranchResults.pop_back();
+        }
+        if (getCurrentBranch()!=result) {
+            mCurrentIncludes->branches.insert(mIndex,getCurrentBranch());
+        }
     };
     // include stuff
     PFileIncludes getFileIncludesEntry(const QString& fileName){

RedPandaIDE/parser/parserutils.cpp

@@ -765,3 +765,15 @@ bool isTypeKind(StatementKind kind)
         return false;
     }
 }
+
+bool FileIncludes::isLineVisible(int line)
+{
+    int lastI=-1;
+    foreach(int i,branches.keys()) {
+        if (line<i)
+            break;
+        else
+            lastI = i;
+    }
+    return lastI<0?true:branches[lastI];
+}

RedPandaIDE/parser/parserutils.h

@@ -300,6 +300,8 @@ struct FileIncludes {
     StatementMap statements; // but we don't save temporary statements (full name as key)
     StatementMap declaredStatements; // statements declared in this file (full name as key)
     CppScopes scopes; // int is start line of the statement scope
+    QMap<int,bool> branches;
+    bool isLineVisible(int line);
 };
 using PFileIncludes = std::shared_ptr<FileIncludes>;