public static string TraceCallStack(this CFlat self)
{
var vm = self.vm;
var sb = new StringBuilder();
sb.AppendLine("callstack:");
for (var i = vm.callFrameStack.count - 1; i >= 0; i--)
{
var callframe = vm.callFrameStack.buffer[i];
switch (callframe.type)
{
case CallFrame.Type.EntryPoint:
break;
case CallFrame.Type.Function:
{
var codeIndex = System.Math.Max(callframe.codeIndex - 1, 0);
var sourceIndex = vm.chunk.sourceSlices.buffer[codeIndex].index;
var source = self.compiler.compiledSources.buffer[vm.chunk.FindSourceIndex(codeIndex)];
var pos = FormattingHelper.GetLineAndColumn(
source.content,
sourceIndex
);
sb.Append("[line ");
sb.Append(pos.lineIndex + 1);
sb.Append("] ");
vm.chunk.FormatFunction(callframe.functionIndex, sb);
sb.Append(" => ");
var slice = FormattingHelper.GetLineSlice(source.content, pos.lineIndex);
slice = FormattingHelper.Trim(source.content, slice);
sb.Append(source.content, slice.index, slice.length);
sb.AppendLine();
break;
}
case CallFrame.Type.NativeFunction:
sb.Append("[native] ");
vm.chunk.FormatNativeFunction(callframe.functionIndex, sb);
sb.AppendLine();
break;
}
}
return(sb.ToString());
}
public void OnDebugHook()
{
if (onBreak == null)
{
return;
}
var codeIndex = vm.callFrameStack.buffer[vm.callFrameStack.count - 1].codeIndex;
if (codeIndex < 0)
{
return;
}
var sourceIndex = vm.chunk.FindSourceIndex(codeIndex);
if (sourceIndex < 0)
{
return;
}
var source = sources.buffer[sourceIndex];
var sourceSlice = vm.chunk.sourceSlices.buffer[codeIndex];
var line = (ushort)(FormattingHelper.GetLineAndColumn(source.content, sourceSlice.index).lineIndex + 1);
var position = new SourcePosition(source.uri, line);
for (var i = 0; i < breakpoints.count; i++)
{
var breakpoint = breakpoints.buffer[i];
if (
(lastPosition.uri.value != position.uri.value ||
lastPosition.line != breakpoint.line) &&
position.line == breakpoint.line
)
{
var localVariables = GetLocalVariables(vm);
onBreak(breakpoint, localVariables);
break;
}
}
lastPosition = position;
}
private static void PrintLineNumber(ByteCodeChunk self, string source, int index, StringBuilder sb)
{
var currentSourceIndex = self.sourceSlices.buffer[index].index;
var currentPosition = FormattingHelper.GetLineAndColumn(source, currentSourceIndex);
var lastLineIndex = -1;
if (index > 0)
{
var lastSourceIndex = self.sourceSlices.buffer[index - 1].index;
lastLineIndex = FormattingHelper.GetLineAndColumn(source, lastSourceIndex).lineIndex;
}
if (currentPosition.lineIndex == lastLineIndex)
{
sb.Append(" | ");
}
else
{
sb.AppendFormat("{0,4} ", currentPosition.lineIndex);
}
}