private Statement ProcessTryCatchFinallyStatement(TryNode node)
{
Debug.Assert(node.CatchClauses.Count < 2);
Debug.Assert((node.CatchClauses.Count == 1) || (node.FinallyClause != null));
TryCatchFinallyStatement statement = new TryCatchFinallyStatement();
Statement body = BuildStatement((StatementNode)node.Body);
statement.AddBody(body);
if (node.CatchClauses.Count == 1) {
CatchNode catchNode = (CatchNode)node.CatchClauses[0];
VariableSymbol exceptionVariableSymbol = null;
if (catchNode.Name != null) {
TypeSymbol exceptionVariableType =
_symbolSet.ResolveType(catchNode.Type, _symbolTable, _memberContext);
Debug.Assert(exceptionVariableType != null);
exceptionVariableSymbol =
new VariableSymbol(catchNode.Name.Name, _memberContext, exceptionVariableType);
}
else {
TypeSymbol exceptionVariableType =
_symbolSet.ResolveIntrinsicType(IntrinsicType.Exception);
Debug.Assert(exceptionVariableType != null);
exceptionVariableSymbol =
new VariableSymbol(_symbolTable.CreateSymbolName("e"), _memberContext, exceptionVariableType);
}
_symbolTable.PushScope();
_symbolTable.AddSymbol(exceptionVariableSymbol);
Statement catchStatement = BuildStatement((StatementNode)catchNode.Body);
statement.AddCatch(exceptionVariableSymbol, catchStatement);
_symbolTable.PopScope();
}
if (node.FinallyClause != null) {
Statement finallyStatement = BuildStatement((StatementNode)node.FinallyClause);
statement.AddFinally(finallyStatement);
}
return statement;
}
private static void GenerateTryCatchFinallyStatement(ScriptGenerator generator, MemberSymbol symbol, TryCatchFinallyStatement statement)
{
ScriptTextWriter writer = generator.Writer;
writer.WriteTrimmed("try ");
writer.Write("{");
writer.WriteNewLine();
writer.Indent++;
GenerateStatement(generator, symbol, statement.Body);
writer.Indent--;
writer.Write("}");
writer.WriteNewLine();
if (statement.Catch != null) {
writer.WriteTrimmed("catch ");
writer.Write("(");
writer.Write(statement.ExceptionVariable.GeneratedName);
writer.WriteTrimmed(") ");
writer.Write("{");
writer.WriteNewLine();
writer.Indent++;
GenerateStatement(generator, symbol, statement.Catch);
writer.Indent--;
writer.Write("}");
writer.WriteNewLine();
}
if (statement.Finally != null) {
writer.WriteTrimmed("finally ");
writer.Write("{");
writer.WriteNewLine();
writer.Indent++;
GenerateStatement(generator, symbol, statement.Finally);
writer.Indent--;
writer.Write("}");
writer.WriteNewLine();
}
}
