private void ExecuteExpression()
{
if (string.IsNullOrEmpty(Code))
{
return;
}
AddHistoricalCode();
var tokens = new AphidLexer(Code + " ").GetTokens();
if (!tokens.Any(x => x.TokenType == AphidTokenType.EndOfStatement))
{
tokens.Add(new AphidToken(AphidTokenType.EndOfStatement, "", 0));
}
List <Components.Aphid.Parser.Expression> ast = null;
try
{
ast = new AphidParser(tokens).Parse();
}
catch (AphidParserException ex)
{
InvokeDispatcher(() => _codeViewer.AppendParserException(Code, ex));
return;
}
if (ast.Count != 1)
{
throw new InvalidOperationException();
}
var exp = ast.First();
var unary = exp as UnaryOperatorExpression;
if (unary == null ||
unary.Operator != AphidTokenType.retKeyword)
{
ast.Clear();
ast.Add(new UnaryOperatorExpression(
AphidTokenType.retKeyword,
exp));
}
try
{
_interpreter.Interpret(ast);
}
catch (AphidRuntimeException ex)
{
InvokeDispatcher(() =>
_codeViewer.AppendException(Code, "Runtime error", ex));
return;
}
catch (AphidParserException ex)
{
InvokeDispatcher(() =>
_codeViewer.AppendParserException(Code, ex));
return;
}
var retVal = _interpreter.GetReturnValue();
var serializer = new AphidSerializer()
{
IgnoreFunctions = false
};
InvokeDispatcher(() =>
_codeViewer.AppendOutput(Code, serializer.Serialize(retVal)));
UpdateVariables();
ExecuteWatchExpressions();
}
