private void HandleEventDeclaration(
DoshikParser.TypeTypeOrVoidContext eventReturnTypeCtx,
string eventCodeName,
DoshikParser.FormalParametersContext eventParametersCtx,
DoshikParser.BlockContext eventBodyCtx
)
{
var eventDeclaration = new EventDeclaration(_compilationContext.CompilationUnit);
eventDeclaration.Parameters = new MethodDeclarationParameters(eventDeclaration, _compilationContext.CompilationUnit.Scope);
_currentMethodDeclaration = eventDeclaration;
eventDeclaration.Name = eventCodeName;
var foundType = GetTypeNameVisitor.Apply(_compilationContext, eventReturnTypeCtx);
foundType.ThrowIfNotFound(_compilationContext);
eventDeclaration.ReturnTypeOrVoid = foundType.DataType;
eventDeclaration.ExternalEvent = _compilationContext.FindExternalApiEventByCodeName(eventDeclaration.Name);
if (_compilationContext.CompilationUnit.Events.ContainsKey(eventDeclaration.Name))
{
throw _compilationContext.ThrowCompilationError($"event handler { eventDeclaration.Name } is already defined");
}
eventDeclaration.Parameters.Parameters.AddRange((List <MethodDeclarationParameter>)Visit(eventParametersCtx));
eventDeclaration.AntlrBody = eventBodyCtx;
if (eventDeclaration.IsCustom)
{
ValidateCustomEvent(eventDeclaration);
}
else
{
ValidateBuiltInEvent(eventDeclaration);
}
_compilationContext.CompilationUnit.Events[eventDeclaration.Name] = eventDeclaration;
}