async Task ProcessCanonicalForAsync(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 = script.GetTempScript(forTokens[0] + Constants.END_STATEMENT);
ParsingScript condScript = script.GetTempScript(forTokens[1] + Constants.END_STATEMENT);
ParsingScript loopScript = script.GetTempScript(forTokens[2] + Constants.END_STATEMENT);
await initScript.ExecuteAsync(null, 0);
int cycles = 0;
bool stillValid = true;
while (stillValid)
{
Variable condResult = await condScript.ExecuteAsync(null, 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 = await ProcessBlockAsync(script);
if (result.IsReturn || result.Type == Variable.VarType.BREAK)
{
//script.Pointer = startForCondition;
//SkipBlock(script);
//return;
break;
}
await loopScript.ExecuteAsync(null, 0);
}
script.Pointer = startForCondition;
SkipBlock(script);
}
public static Variable GetVariableFromString(string str, ParsingScript script, int startIndex = 0)
{
ParsingScript tempScript = script.GetTempScript(str, startIndex);
Variable result = Utils.GetItem(tempScript);
return(result);
}
public static async Task <List <Variable> > GetArgsAsync(ParsingScript script,
char start, char end, Action <bool> outList)
{
List <Variable> args = new List <Variable>();
bool isList = script.StillValid() && script.Current == Constants.START_GROUP;
if (!script.StillValid() || script.Current == Constants.END_STATEMENT)
{
return(args);
}
ParsingScript tempScript = script.GetTempScript(script.String, script.Pointer);
/*ParsingScript tempScript = new ParsingScript(script.String, script.Pointer);
* tempScript.ParentScript = script;
* tempScript.InTryBlock = script.InTryBlock;*/
if (script.Current != start && script.TryPrev() != start &&
(script.Current == ' ' || script.TryPrev() == ' '))
{ // Allow functions with space separated arguments
start = ' ';
end = Constants.END_STATEMENT;
}
// ScriptingEngine - body is unsed (used in Debugging) but GetBodyBetween has sideeffects
#pragma warning disable 219
string body = Utils.GetBodyBetween(tempScript, start, end);
#pragma warning restore 219
// After the statement above tempScript.Parent will point to the last
// character belonging to the body between start and end characters.
while (script.Pointer < tempScript.Pointer)
{
Variable item = await Utils.GetItemAsync(script, false);
args.Add(item);
if (script.Pointer < tempScript.Pointer)
{
script.MoveForwardIf(Constants.END_GROUP);
script.MoveForwardIf(Constants.NEXT_ARG);
}
if (script.Pointer == tempScript.Pointer - 1)
{
script.MoveForwardIf(Constants.END_ARG, Constants.END_GROUP);
}
}
if (script.Pointer <= tempScript.Pointer)
{
// Eat closing parenthesis, if there is one, but only if it closes
// the current argument list, not one after it.
script.MoveForwardIf(Constants.END_ARG, end);
}
script.MoveForwardIf(Constants.SPACE);
//script.MoveForwardIf(Constants.SPACE, Constants.END_STATEMENT);
outList(isList);
return(args);
}
async Task ProcessArrayForAsync(ParsingScript script, string forString)
{
var tokens = forString.Split(' ');
var sep = tokens.Length > 2 ? tokens[1] : "";
string varName = tokens[0];
if (sep != Constants.FOR_EACH && sep != Constants.FOR_IN && sep != Constants.FOR_OF)
{
int index = forString.IndexOf(Constants.FOR_EACH);
if (index <= 0 || index == forString.Length - 1)
{
Utils.ThrowErrorMsg("Expecting: for(item :/in/of array)",
script, Constants.FOR);
}
varName = forString.Substring(0, index);
}
ParsingScript forScript = script.GetTempScript(forString, varName.Length + sep.Length + 1);
forScript.Debugger = script.Debugger;
Variable arrayValue = await Utils.GetItemAsync(forScript);
if (arrayValue.Type == Variable.VarType.STRING)
{
arrayValue = new Variable(new List <string>(arrayValue.ToString().ToCharArray().Select(c => c.ToString())));
}
int cycles = arrayValue.Count;
if (cycles == 0)
{
SkipBlock(script);
return;
}
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 = await ProcessBlockAsync(script);
if (result.IsReturn || result.Type == Variable.VarType.BREAK)
{
//script.Pointer = startForCondition;
//SkipBlock(script);
//return;
break;
}
}
script.Pointer = startForCondition;
SkipBlock(script);
}
async Task ProcessArrayForAsync(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 = script.GetTempScript(forString, index + Constants.FOR_EACH.Length);
forScript.Debugger = script.Debugger;
Variable arrayValue = await Utils.GetItemAsync(forScript);
if (arrayValue.Type == Variable.VarType.STRING)
{
arrayValue = new Variable(new List <string>(arrayValue.ToString().ToCharArray().Select(c => c.ToString())));
}
int cycles = arrayValue.Count;
if (cycles == 0)
{
SkipBlock(script);
return;
}
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 = await ProcessBlockAsync(script);
if (result.IsReturn || result.Type == Variable.VarType.BREAK)
{
//script.Pointer = startForCondition;
//SkipBlock(script);
//return;
break;
}
}
script.Pointer = startForCondition;
SkipBlock(script);
}
protected override Variable Evaluate(ParsingScript script)
{
List<Variable> args = script.GetFunctionArgs();
Utils.CheckArgs(args.Count, 1, m_name);
string json = args[0].AsString();
Dictionary<int, int> d;
json = Utils.ConvertToScript(json, out d);
var tempScript = script.GetTempScript(json);
Variable result = ExtractValue(tempScript);
return result;
}
public static async Task <List <Variable> > GetArrayIndicesAsync(ParsingScript script, string varName, int end, Action <string, int> updateVals)
{
List <Variable> indices = new List <Variable>();
int argStart = varName.IndexOf(Constants.START_ARRAY);
if (argStart < 0)
{
return(indices);
}
int firstIndexStart = argStart;
while (argStart < varName.Length &&
varName[argStart] == Constants.START_ARRAY)
{
int argEnd = varName.IndexOf(Constants.END_ARRAY, argStart + 1);
if (argEnd == -1 || argEnd <= argStart + 1)
{
break;
}
ParsingScript tempScript = script.GetTempScript(varName, argStart);
/*ParsingScript tempScript = new ParsingScript(varName, argStart);
* tempScript.ParentScript = script;
* tempScript.Char2Line = script.Char2Line;
* tempScript.Filename = script.Filename;
* tempScript.OriginalScript = script.OriginalScript;
* tempScript.InTryBlock = script.InTryBlock;*/
tempScript.MoveForwardIf(Constants.START_ARG, Constants.START_ARRAY);
Variable index = await tempScript.ExecuteAsync(Constants.END_ARRAY_ARRAY);
indices.Add(index);
argStart = argEnd + 1;
}
if (indices.Count > 0)
{
varName = varName.Substring(0, firstIndexStart);
end = argStart - 1;
}
updateVals(varName, end);
return(indices);
}
public static List <Variable> GetArrayIndices(ParsingScript script, string varName, int end, Action <string, int> updateVals)
{
List <Variable> indices = new List <Variable>();
int argStart = varName.IndexOf(Constants.START_ARRAY);
if (argStart < 0)
{
return(indices);
}
int firstIndexStart = argStart;
while (argStart < varName.Length &&
varName[argStart] == Constants.START_ARRAY)
{
int argEnd = varName.IndexOf(Constants.END_ARRAY, argStart + 1);
if (argEnd == -1 || argEnd <= argStart + 1)
{
break;
}
ParsingScript tempScript = script.GetTempScript(varName, argStart);
tempScript.MoveForwardIf(Constants.START_ARG, Constants.START_ARRAY);
Variable index = tempScript.Execute(Constants.END_ARRAY_ARRAY);
indices.Add(index);
argStart = argEnd + 1;
}
if (indices.Count > 0)
{
varName = varName.Substring(0, firstIndexStart);
end = argStart - 1;
}
updateVals(varName, end);
return(indices);
}
