public override void ExitBranch(HS_Gen1Parser.BranchContext context)
{
if (_debug)
{
_logger.Branch(context, CompilerContextAction.Exit);
}
// Generate the script name.
var scriptContext = GetParentContext(context, HS_Gen1Parser.RULE_scriptDeclaration) as HS_Gen1Parser.ScriptDeclarationContext;
if(scriptContext is null)
{
throw new CompilerException("The compiler failed to retrieve the name of a script, from which \"branch\" was called.", context);
}
string fromScript = scriptContext.scriptID().GetTextSanitized();
var parameters = context.expression();
var callParameter = parameters[1].call();
if (callParameter is null)
{
throw new CompilerException("A branch call's second argument must be a script call.", context);
}
string toScript = callParameter.callID().GetTextSanitized();
string generatedName = fromScript + "_to_" + toScript;
var condition = _expressions[_branchBoolIndex].Clone();
var scriptReference = _expressions[condition.Next.Index].Clone();
// Modify the original script reference. The opcode points to the generated script.
_expressions[condition.Next.Index].Opcode = _nextGenBranchIndex;
// Add the generated script to the lookup.
ScriptInfo info = new ScriptInfo(generatedName, "static", "void", _nextGenBranchIndex);
AddScriptToLookup(info);
_nextGenBranchIndex++;
_generatedBranches.Add(new Branch(generatedName, context.GetCorrectTextPosition(_missingCarriageReturnPositions), condition, scriptReference));
CloseDatum();
}
/// <summary>
/// Generate script and global lookups.
/// </summary>
/// <param name="context"></param>
public override void EnterHsc(HS_Gen1Parser.HscContext context)
{
// Generate the globals lookup.
if (context.globalDeclaration() != null)
{
_mapGlobalsLookup = context.globalDeclaration().Select((g, index) => new GlobalInfo(g, (ushort)index)).ToDictionary(g => g.Name);
}
// Generate the script lookup and determine the index, which the next generated branch script will have.
var declarations = context.scriptDeclaration();
if (declarations != null)
{
_nextGenBranchIndex = (ushort)declarations.Length;
_scriptLookup = new Dictionary<string, List<ScriptInfo>>();
for(ushort i = 0; i < context.scriptDeclaration().Length; i++)
{
var info = new ScriptInfo(declarations[i], i);
AddScriptToLookup(info);
}
}
// The declaration count is used to calculate the current progress.
_declarationCount = context.scriptDeclaration().Length + context.globalDeclaration().Length;
// Find all missing carriage returns. Somehow antlr removes them under certain circumstances and messes up the text position indeces.
string text = context.Start.InputStream.GetText(new Interval(0, context.Start.InputStream.Size));
string otherText = context.GetText();
bool same = text == otherText;
var missingCarriageReturns = Regex.Matches(text, @"(?<!\r)\n");
foreach (Match match in missingCarriageReturns)
{
_missingCarriageReturnPositions.Add(match.Index);
}
}