public Value Evaluate(Environment environment)
{
var result = new ValueList();
var localEnv = environment.NewEnv();
var list = AsList.From(listExpr.Evaluate(environment));
foreach (var listValue in list.GetValue())
{
localEnv.Put(identifier, listValue);
var value = valueExpr.Evaluate(localEnv);
if (conditionExpr != null)
{
var condition = conditionExpr.Evaluate(localEnv);
if (!condition.IsBoolean())
{
throw new ControlErrorException(new ValueString("ERROR"), "Condition must be boolean but got " + condition.Type(),
pos);
}
if (condition.AsBoolean().GetValue())
{
result.AddItem(value);
}
}
else
{
result.AddItem(value);
}
}
return(result);
}
public Value Evaluate(Environment environment)
{
var result = new ValueSet();
var localEnv = environment.NewEnv();
var list1 = AsList.From(listExpr1.Evaluate(environment)).GetValue();
var list2 = AsList.From(listExpr2.Evaluate(environment)).GetValue();
for (var i = 0; i < Math.Max(list1.Count, list2.Count); i++)
{
localEnv.Put(identifier1, i < list1.Count ? list1[i] : ValueNull.NULL);
localEnv.Put(identifier2, i < list2.Count ? list2[i] : ValueNull.NULL);
var value = valueExpr.Evaluate(localEnv);
if (conditionExpr != null)
{
var condition = conditionExpr.Evaluate(localEnv);
if (!condition.IsBoolean())
{
throw new ControlErrorException(new ValueString("ERROR"),
"Condition must be boolean but got " + condition.Type(),
pos);
}
if (condition.AsBoolean().GetValue())
{
result.AddItem(value);
}
}
else
{
result.AddItem(value);
}
}
return(result);
}
public override Value Execute(Args args, Environment environment, SourcePos pos)
{
var env = environment.NewEnv();
var lst = args.GetAsList("lst");
var cmp = args.HasArg("cmp") ? args.GetFunc("cmp") : environment.Get("compare", pos).AsFunc();
var key = args.HasArg("key") ? args.GetFunc("key") : environment.Get("identity", pos).AsFunc();
var result = new List <Value>();
result.AddRange(lst.GetValue());
for (var i = 1; i < result.Count; i++)
{
var v = key.Execute(new Args(key.GetArgNames()[0], result[i], pos), env, pos);
for (var j = i - 1; j >= 0; j--)
{
var v2 = key.Execute(new Args(key.GetArgNames()[0], result[j], pos), env, pos);
var cmpargs = new Args(cmp.GetArgNames()[0], cmp.GetArgNames()[1], v, v2, pos);
var comparison = (int)cmp.Execute(cmpargs, env, pos).AsInt().GetValue();
if (comparison < 0)
{
var temp = result[j + 1];
result[j + 1] = result[j];
result[j] = temp;
}
else
{
break;
}
}
}
return(new ValueList(result));
}
public override Value Execute(Args args, Environment environment, SourcePos pos)
{
var inparg = args.Get("input");
var callback = args.Get("callback").AsFunc();
Environment env = environment.NewEnv();
if (inparg is ValueInput)
{
ValueInput input = inparg.AsInput();
return(new ValueInt(input.Process(line => {
Args args_ = new Args(callback.GetArgNames()[0], new ValueString(line), pos);
return callback.Execute(args_, env, pos);
})));
}
if (inparg is ValueList)
{
var list = inparg.AsList().GetValue();
foreach (var element in list)
{
Args args_ = new Args(callback.GetArgNames()[0], element.AsString(), pos);
callback.Execute(args_, env, pos);
}
;
return(new ValueInt(list.Count));
}
throw new ControlErrorException(new ValueString("ERROR"), "Cannot process lines from " + inparg, pos);
}
public Interpreter(bool secure = true, bool legacy = true)
{
baseEnvironment = Environment.GetBaseEnvironment(secure, legacy);
environment = baseEnvironment.NewEnv();
baseEnvironment.Put("stdout", new ValueOutput(new StringWriter()));
baseEnvironment.Put("stdin", new ValueInput(new StringReader("")));
if (!secure)
{
baseEnvironment.Put("run", new FuncRun(this));
}
}
public override Value Execute(Args args, Environment environment, SourcePos pos)
{
if (args.IsNull("obj"))
{
return(ValueNull.NULL);
}
var obj = args.Get("obj");
var key = args.HasArg("key") ? args.GetFunc("key") : null;
if (obj.IsString())
{
var str = obj.AsString().GetValue();
var start = (int)args.GetInt("start", str.Length - 1).GetValue();
var part = args.GetString("part").GetValue();
return(new ValueInt(str.LastIndexOf(part, start, StringComparison.Ordinal)));
}
if (obj.IsList())
{
var env = environment;
if (key != null)
{
env = environment.NewEnv();
}
var item = args.Get("part");
var list = obj.AsList().GetValue();
var start = (int)args.GetInt("start", list.Count - 1).GetValue();
for (var idx = start; idx >= 0; idx--)
{
var elem = list[idx];
if (key != null)
{
elem = key.Execute(new Args(key.GetArgNames()[0], elem, pos), env, pos);
}
if (elem.IsEquals(item))
{
return(new ValueInt(idx));
}
}
return(new ValueInt(-1));
}
throw new ControlErrorException(new ValueString("ERROR"), "Find_last only works with strings and lists", pos);
}
public Value Evaluate(Environment environment)
{
var result = new ValueMap();
var localEnv = environment.NewEnv();
var list = listExpr.Evaluate(environment);
if (list.IsString())
{
var s = list.AsString().GetValue();
var slist = new ValueList();
for (var i = 0; i < s.Length; i++)
{
slist.AddItem(new ValueString(s.Substring(i, 1)));
}
list = slist;
}
foreach (var listValue in list.AsList().GetValue())
{
localEnv.Put(identifier, listValue);
var key = keyExpr.Evaluate(localEnv);
var value = valueExpr.Evaluate(localEnv);
if (conditionExpr != null)
{
var condition = conditionExpr.Evaluate(localEnv);
if (!condition.IsBoolean())
{
throw new ControlErrorException(new ValueString("ERROR"), "Condition must be boolean but got " + condition.Type(), pos);
}
if (condition.AsBoolean().GetValue())
{
result.AddItem(key, value);
}
}
else
{
result.AddItem(key, value);
}
}
return(result);
}
public override Value Execute(Args args, Environment environment, SourcePos pos)
{
var env = lexicalEnv.NewEnv();
for (var i = 0; i < argNames.Count; i++)
{
if (args.HasArg(argNames[i]))
{
env.Put(argNames[i], args.Get(argNames[i]));
}
else if (defValues[i] != null)
{
env.Put(argNames[i], defValues[i].Evaluate(env));
}
else
{
throw new ControlErrorException(new ValueString("ERROR"), "Missing argument " + argNames[i], pos);
}
}
var result = body.Evaluate(env);
if (result.IsReturn())
{
return(result.AsReturn().value);
}
if (result.IsBreak())
{
throw new ControlErrorException(new ValueString("ERROR"), "Cannot use break without surrounding for loop", result.AsBreak().pos);
}
if (result.IsContinue())
{
throw new ControlErrorException(new ValueString("ERROR"), "Cannot use continue without surrounding for loop", result.AsContinue().pos);
}
return(result);
}
