/// <summary>
/// Searches the assembly lines for the end of the block
/// </summary>
/// <param name="asm">Assembler instance</param>
/// <param name="lines"></param>
/// <param name="currentLineIndex"></param>
/// <param name="endLabel">Optional end label</param>
/// <returns></returns>
public bool SearchForEnd(Z80Assembler asm, List <SourceLineBase> lines, ref int currentLineIndex, out string endLabel)
{
endLabel = null;
if (currentLineIndex >= lines.Count)
{
return(false);
}
// --- Store the start line for error reference
var startLine = lines[currentLineIndex];
currentLineIndex++;
// --- Iterate through lines
while (currentLineIndex < lines.Count)
{
var curLine = lines[currentLineIndex];
if (curLine.GetType() == EndType)
{
// --- We have found the end line, get its label
endLabel = curLine.Label ?? endLabel;
return(true);
}
if (curLine is NoInstructionLine noinstrLine)
{
// --- Record the last hanging label
endLabel = noinstrLine.Label;
}
else
{
endLabel = null;
if (curLine is BlockStatementBase blockStmt)
{
var success = blockStmt.SearchForEnd(asm, lines, ref currentLineIndex, out endLabel);
if (!success)
{
asm.ReportError(Errors.Z0401, startLine, blockStmt.EndStatementName);
return(false);
}
}
}
currentLineIndex++;
}
asm.ReportError(Errors.Z0401, startLine, EndStatementName);
return(false);
}