static Variable ExtractValue(ParsingScript script)
{
if (script.TryCurrent() == '{')
{
return(ExtractObject(script));
}
if (script.TryCurrent() == '[')
{
return(ExtractArray(script));
}
var token = Utils.GetToken(script, SEP);
return(new Variable(token));
}
async Task <string> ProcessRepl(string repl, string filename = "")
{
ReplMode = true;
Dictionary <int, int> char2Line;
string script = Utils.ConvertToScript(repl, out char2Line);
ParsingScript tempScript = new ParsingScript(script, 0, char2Line);
tempScript.OriginalScript = repl;
tempScript.Debugger = this;
if (!string.IsNullOrWhiteSpace(filename))
{
tempScript.Filename = filename;
}
Variable result = null;
bool excThrown = false;
string stringRes = "";
try
{
while (tempScript.Pointer < script.Length)
{
result = await DebuggerUtils.Execute(tempScript);
tempScript.GoToNextStatement();
while (tempScript.TryCurrent() == Constants.END_STATEMENT)
{
tempScript.Forward();
}
}
if (TrySendFile(result, tempScript, ref excThrown) || excThrown)
{
return("");
}
stringRes = string.IsNullOrEmpty(Output) ? "" : Output + (Output.EndsWith("\n") ? "" : "\n");
stringRes += result == null ? "" : result.AsString();
stringRes += (stringRes.EndsWith("\n") ? "" : "\n");
}
catch (Exception exc)
{
Console.WriteLine("ProcessRepl Exception: " + exc);
return(""); // The exception was already thrown and sent back.
}
finally
{
ReplMode = false;
}
return(stringRes);
}
static bool StillCollecting(string item, char[] to, ParsingScript script,
ref string action)
{
char prev = script.TryPrevPrev();
char ch = script.TryPrev();
char next = script.TryCurrent();
if (to.Contains(ch) || ch == Constants.START_ARG ||
ch == Constants.START_GROUP ||
next == Constants.EMPTY)
{
return(false);
}
// Case of a negative number, or starting with the closing bracket:
if (item.Length == 0 &&
((ch == '-' && next != '-') || ch == Constants.END_ARRAY ||
ch == Constants.END_ARG))
{
return(true);
}
// Case of a scientific notation 1.2e+5 or 1.2e-5 or 1e5:
if (Char.ToUpper(prev) == 'E' &&
(ch == '-' || ch == '+' || Char.IsDigit(ch)) &&
item.Length > 1 && Char.IsDigit(item[item.Length - 2]))
{
return(true);
}
// Otherwise if it's an action (+, -, *, etc.) or a space
// we're done collecting current token.
if ((action = Utils.ValidAction(script.FromPrev())) != null ||
(item.Length > 0 && ch == Constants.SPACE))
{
return(false);
}
if (ch == Constants.TERNARY_OPERATOR)
{
script.Backward();
return(false);
}
return(true);
}
static bool UpdateResult(ParsingScript script, char[] to, List <Variable> listToMerge, string token, bool negSign,
ref Variable current, ref int negated, ref string action)
{
if (current == null)
{
current = Variable.EmptyInstance;
}
current.ParsingToken = token;
if (negSign)
{
current = new Variable(-1 * current.Value);
}
if (negated > 0 && current.Type == Variable.VarType.NUMBER)
{
// If there has been a NOT sign, this is a boolean.
// Use XOR (true if exactly one of the arguments is true).
bool neg = !((negated % 2 == 0) ^ Convert.ToBoolean(current.Value));
current = new Variable(Convert.ToDouble(neg));
negated = 0;
}
if (script.Current == '.')
{
bool inQuotes = false;
int arrayIndexDepth = 0;
script.Forward();
string property = ExtractNextToken(script, to, ref inQuotes, ref arrayIndexDepth, ref negated, out _, out action);
Variable propValue = current.Type == Variable.VarType.ENUM ?
current.GetEnumProperty(property, script) :
current.GetProperty(property, script);
current = propValue;
}
if (action == null)
{
action = UpdateAction(script, to);
}
else
{
script.MoveForwardIf(action[0]);
}
char next = script.TryCurrent(); // we've already moved forward
bool done = listToMerge.Count == 0 &&
(next == Constants.END_STATEMENT ||
(action == Constants.NULL_ACTION && current.Type != Variable.VarType.NUMBER) ||
current.IsReturn);
if (done)
{
if (action != null && action != Constants.END_ARG_STR && token != Constants.DEFAULT)
{
throw new ArgumentException("Action [" +
action + "] without an argument.");
}
// If there is no numerical result, we are not in a math expression.
listToMerge.Add(current);
return(true);
}
Variable cell = current.Clone();
cell.Action = action;
bool addIt = UpdateIfBool(script, cell, (Variable newCell) => { cell = newCell; }, listToMerge, (List <Variable> var) => { listToMerge = var; });
if (addIt)
{
listToMerge.Add(cell);
}
return(false);
}