void ProcessArrayFor(ParsingScript script,string forString)
{
int index = forString.IndexOf(Constants.FOR_EACH);
if (index <= 0 || index == forString.Length - 1)
{
throw new ArgumentException("Expecting: for(item : array)");
}
string varName = forString.Substring(0,index);
ParsingScript forScript = new ParsingScript(forString);
Variable arrayValue = forScript.ExecuteFrom(index + 1);
int cycles = arrayValue.TotalElements();
int startForCondition = script.Pointer;
for (int i = 0; i < cycles; i++)
{
script.Pointer = startForCondition;
Variable current = arrayValue.GetValue(i);
ParserFunction.AddGlobalOrLocalVariable(varName,
new GetVarFunction(current));
Variable result = ProcessBlock(script);
if (result.IsReturn || result.Type == Variable.VarType.BREAK)
{
script.Pointer = startForCondition;
SkipBlock(script);
return;
}
}
}
void ProcessCanonicalFor(ParsingScript script, string forString)
{
string[] forTokens = forString.Split(Constants.END_STATEMENT);
if (forTokens.Length != 3)
{
throw new ArgumentException("Expecting: for(init; condition; loopStatement)");
}
int startForCondition = script.Pointer;
ParsingScript initScript = new ParsingScript(forTokens[0] + Constants.END_STATEMENT);
ParsingScript condScript = new ParsingScript(forTokens[1] + Constants.END_STATEMENT);
ParsingScript loopScript = new ParsingScript(forTokens[2] + Constants.END_STATEMENT);
initScript.ParentScript = script;
condScript.ParentScript = script;
loopScript.ParentScript = script;
initScript.ExecuteFrom(0);
int cycles = 0;
bool stillValid = true;
while (stillValid)
{
Variable condResult = condScript.ExecuteFrom(0);
stillValid = Convert.ToBoolean(condResult.Value);
if (!stillValid)
{
break;
}
if (MAX_LOOPS > 0 && ++cycles >= MAX_LOOPS)
{
throw new ArgumentException("Looks like an infinite loop after " +
cycles + " cycles.");
}
script.Pointer = startForCondition;
Variable result = ProcessBlock(script);
if (result.IsReturn || result.Type == Variable.VarType.BREAK)
{
//script.Pointer = startForCondition;
//SkipBlock(script);
//return;
break;
}
loopScript.ExecuteFrom(0);
}
script.Pointer = startForCondition;
SkipBlock(script);
}