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Highlight local variable uses

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When a single line is selected in a local variable table, highlight
the operands of every instruction that references that variable.
This commit is contained in:
Andy McFadden 2021-11-25 10:31:50 -08:00
parent b942c24ef2
commit 865a5e58f7
2 changed files with 31 additions and 24 deletions
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4
SourceGen/LineListGen.cs
View File

@ -1633,8 +1633,7 @@ namespace SourceGen {
}
}
public DefSymbol GetLocalVariableFromLine(int lineIndex) {
Line line = this[lineIndex];
public DefSymbol GetLocalVariableFromLine(Line line) {
int offset = line.FileOffset;
if (!mProject.LvTables.TryGetValue(offset, out LocalVariableTable lvt)) {
Debug.Assert(false);
@ -1661,7 +1660,6 @@ namespace SourceGen {
// You can't have an end followed by a start, because that would mean the regions
// overlap. If there's both start and end present, we have a 1-byte region.
int offset = line.FileOffset;
List<AddressMap.AddressMapEntry> entries = mProject.AddrMap.GetEntries(offset);
IEnumerator<AddressMap.AddressChange> addrIter = mProject.AddrMap.AddressChangeIterator;
while (addrIter.MoveNext()) {

51
SourceGen/MainController.cs
View File

@ -3437,8 +3437,21 @@ namespace SourceGen {
}
mUpdatingSelectionHighlight = true;
int targetIndex = FindSelectionAddrHighlight(out bool isSingleCodeData,
out int selIndex);
//
// Start with the target address highlight, for branches and in-file memory accesses.
//
int targetIndex = -1;
LineListGen.Line selectedLine = null;
if (mMainWin.CodeListView_GetSelectionCount() == 1) {
int selIndex = mMainWin.CodeListView_GetFirstSelectedIndex();
selectedLine = CodeLineList[selIndex];
if (selectedLine.IsCodeOrData) {
Debug.Assert(selectedLine.FileOffset >= 0);
targetIndex = FindSelectionAddrHighlight(selectedLine);
}
}
if (mTargetHighlightIndex != targetIndex) {
Debug.WriteLine("Target highlight moving from " + mTargetHighlightIndex +
" to " + targetIndex);
@ -3459,15 +3472,25 @@ namespace SourceGen {
mTargetHighlightIndex = targetIndex;
}
//
// Now do the source operand highlight, to see what refers to the current address.
//
// Un-highlight anything we had highlighted previously.
if (mOperandHighlights.Count > 0) {
foreach (int index in mOperandHighlights) {
mMainWin.CodeListView_RemoveSelectionOperHighlight(index);
}
mOperandHighlights.Clear();
}
if (isSingleCodeData) {
LineListGen.Line line = CodeLineList[selIndex];
XrefSet xrefs = mProject.GetXrefSet(line.FileOffset);
if (selectedLine != null) {
XrefSet xrefs = null;
if (selectedLine.IsCodeOrData) {
xrefs = mProject.GetXrefSet(selectedLine.FileOffset);
} else if (selectedLine.LineType == LineListGen.Line.Type.LocalVariableTable) {
DefSymbol defSym = CodeLineList.GetLocalVariableFromLine(selectedLine);
xrefs = (defSym == null) ? null : defSym.Xrefs;
}
if (xrefs != null) {
foreach (XrefSet.Xref xr in xrefs) {
int refIndex = CodeLineList.FindCodeDataIndexByOffset(xr.Offset);
@ -3480,21 +3503,7 @@ namespace SourceGen {
mUpdatingSelectionHighlight = false;
}
private int FindSelectionAddrHighlight(out bool isSingleCodeData, out int selIndex) {
if (mMainWin.CodeListView_GetSelectionCount() != 1) {
isSingleCodeData = false;
selIndex = -1;
return -1;
}
selIndex = mMainWin.CodeListView_GetFirstSelectedIndex();
LineListGen.Line line = CodeLineList[selIndex];
if (!line.IsCodeOrData) {
isSingleCodeData = false;
return -1;
}
Debug.Assert(line.FileOffset >= 0);
isSingleCodeData = true;
private int FindSelectionAddrHighlight(LineListGen.Line line) {
// Does this have an operand with an in-file target offset?
// TODO: may not work correctly with reloc data?
Anattrib attr = mProject.GetAnattrib(line.FileOffset);
@ -3898,7 +3907,7 @@ namespace SourceGen {
// Find the appropriate xref set.
if (type == LineListGen.Line.Type.LocalVariableTable) {
DefSymbol defSym = CodeLineList.GetLocalVariableFromLine(lineIndex);
DefSymbol defSym = CodeLineList.GetLocalVariableFromLine(CodeLineList[lineIndex]);
xrefs = (defSym == null) ? null : defSym.Xrefs;
} else {
int offset = CodeLineList[lineIndex].FileOffset;