Machine::address_to_editor_blcok

src/assembler/simpleasm.cpp

@@ -521,6 +521,7 @@ bool SimpleAsm::process_line(
     }
     uint32_t *p = inst;
     for (size_t l = 0; l < size; l += 4) {
+        address_to_blocknum.insert(address, line_number);
         if (!fatal_occured) { mem->write_u32(address, *(p++), ae::INTERNAL); }
         address += 4;
     }

src/assembler/simpleasm.h

@@ -76,6 +76,9 @@ class SimpleAsm : public QObject {
     SymbolTableDb *symtab {};
     machine::Address address {};
 
+public:
+    QMap<machine::Address, int> address_to_blocknum = {};
+
 private:
     QStringList include_stack;
     machine::FrontendMemory *mem {};

src/gui/mainwindow/mainwindow.cpp

@@ -759,6 +759,12 @@ void MainWindow::compile_source() {
     }
     if (!sasm.finish()) { error_occured = true; }
 
+
+    machine->address_to_editor_blcok = sasm.address_to_blocknum;
+    connect(
+        machine.data(), &machine::Machine::highlight_by_blocknum, editor,
+        &SrcEditor::highlightBlock);
+
     if (error_occured) { show_messages(); }
 }
 

src/gui/windows/editor/srceditor.cpp

@@ -11,6 +11,7 @@
 #include <QFile>
 #include <QFileInfo>
 #include <QPainter>
+#include <QScrollBar>
 #include <QTextCursor>
 #include <QTextDocumentWriter>
 #include <qglobal.h>
@@ -289,3 +290,31 @@ void SrcEditor::insertFromMimeData(const QMimeData *source) {
 bool SrcEditor::canInsertFromMimeData(const QMimeData *source) const {
     return source->hasText();
 }
+
+void SrcEditor::highlightBlock(int blockNum) {
+    QList<QTextEdit::ExtraSelection> extraSelections;
+
+    if (!isReadOnly()) {
+        QTextEdit::ExtraSelection selection;
+
+        QColor lineColor = QColor(Qt::yellow).lighter(160);
+        selection.format.setBackground(lineColor);
+        selection.format.setProperty(QTextFormat::FullWidthSelection, true);
+        QTextBlock block = document()->findBlockByNumber(blockNum - 1);
+
+        // scroll to block and show it in editor middle
+        QFontMetrics fontMetrics(document()->defaultFont());
+        // calculate viewport line count
+        int viewportLineCount = viewport()->height() / fontMetrics.height();
+        QScrollBar *vScrollBar = verticalScrollBar();
+        vScrollBar->setValue(
+            vScrollBar->singleStep() * (block.firstLineNumber() - viewportLineCount / 2));
+
+        selection.cursor = QTextCursor(block);
+        selection.cursor.movePosition(
+            QTextCursor::EndOfBlock, QTextCursor::KeepAnchor, block.length());
+        extraSelections.append(selection);
+    }
+
+    setExtraSelections(extraSelections);
+}

src/gui/windows/editor/srceditor.h

@@ -42,6 +42,7 @@ class SrcEditor : public QPlainTextEdit {
 
 public slots:
     void setShowLineNumbers(bool visible);
+    void highlightBlock(int line_num);
 
 private slots:
     void updateMargins(int newBlockCount);

src/machine/machine.cpp

@@ -331,6 +331,8 @@ void Machine::pause() {
 
 void Machine::step_internal(bool skip_break) {
     CTL_GUARD;
+    emit highlight_by_blocknum(address_to_editor_blcok.value(regs->read_pc()));
+
     enum Status stat_prev = stat;
     set_status(ST_BUSY);
     emit tick();

src/machine/machine.h

@@ -3,13 +3,13 @@
 
 #include "core.h"
 #include "machineconfig.h"
+#include "memory/backend/aclintmswi.h"
+#include "memory/backend/aclintmtimer.h"
+#include "memory/backend/aclintsswi.h"
 #include "memory/backend/lcddisplay.h"
 #include "memory/backend/peripheral.h"
 #include "memory/backend/peripspiled.h"
 #include "memory/backend/serialport.h"
-#include "memory/backend/aclintmtimer.h"
-#include "memory/backend/aclintmswi.h"
-#include "memory/backend/aclintsswi.h"
 #include "memory/cache/cache.h"
 #include "memory/memory_bus.h"
 #include "predictor.h"
@@ -92,6 +92,7 @@ public slots:
     void restart();
 
 signals:
+    void highlight_by_blocknum(int block_num);
     void program_exit();
     void program_trap(machine::SimulatorException &e);
     void status_change(enum machine::Machine::Status st);
@@ -102,6 +103,9 @@ public slots:
 private slots:
     void step_timer();
 
+public:
+    QMap<machine::Address, int> address_to_editor_blcok = {};
+
 private:
     void step_internal(bool skip_break = false);
     MachineConfig machine_config;