private Lexicon playerExecute(Command command)
{
return execute(nextLexicon());
}
private Lexicon type(Command command)
{
if (inputSize() > 1 || inputSize() > 1) {
return new Error("There must be exactly 1 argument.");
}
Lexicon arg = nextLexicon();
return new Atom(arg.Type.ToString());
}
private Lexicon math(Command command)
{
// not sure if they're numbers yet
Lexicon arg1 = nextLexicon();
Lexicon arg2 = nextLexicon();
if (arg1 == null || arg2 == null) return new Error("Too few arguments");
if (arg1.Type == DataTypes.Command) arg1 = execute(arg1);
if (arg2.Type == DataTypes.Command) arg2 = execute(arg2);
if (!arg1.Type.Equals(DataTypes.Number)) return new Error("First arg is not a Number");
if (!arg2.Type.Equals(DataTypes.Number)) return new Error("Second arg is not a Number");
if (command.Value == "add") {
return Lexer.generateToken(((Number)arg2).Value + ((Number)arg1).Value, this);
} else if (command.Value == "sub") {
return Lexer.generateToken(((Number)arg2).Value - ((Number)arg1).Value, this);
} else if (command.Value == "mul") {
return Lexer.generateToken(((Number)arg2).Value * ((Number)arg1).Value, this);
} else { /* (command == "div")*/
return Lexer.generateToken(((Number)arg2).Value / ((Number)arg1).Value, this);
}
}
private Lexicon multipleType(Command command)
{
if (inputSize() < 1) {
return new Error("There must be at least 1 Command provided");
}
Lexicon lex;
while (null != (lex = nextLexicon())) {
_konsole.printOutput(lex.getValueAsString() + ": " + lex.Type);
}
return new None();
}
private Lexicon mass(Command command)
{
return new Number(_vessel.RevealMass());
}
private Lexicon massTotal(Command command)
{
return new Number(_vessel.GetTotalMass());
}
private Lexicon getLastAns(Command command)
{
return _last_result;
}
private Lexicon ifCond(Command command)
{
// not a good test for correctness
if (inputSize() < 3) {
return new Error("If requires the format 'if (Bool) {A} else {B}'");
}
Lexicon cond = execute(nextLexicon());
Lexicon true_block = nextLexicon();
Lexicon false_block = nextLexicon();
if (false_block.getValueAsString() == "else") {
false_block = nextLexicon();
}
if (cond.Type != DataTypes.Bool) {
new Error("Expected Bool, received " + cond.Type);
}
// If BOOL A B
// if true, then A
// if false, then B
// This bit is selecting which code to execute based off of Bool arg1
if (((Bool)cond).Value) {
// Lexicon result = _lexer.getNextLexicon();
return execute(true_block); // recursively go until the following expression is done
} else {
return execute(false_block); // recursively go until the following expression is done
}
}
private Lexicon equality(Command command)
{
bool result;
if (inputSize() < 2) {
return new Error("Must have two values to compare");
}
Lexicon arg1 = execute(nextLexicon());
Lexicon arg2 = execute(nextLexicon());
if (arg1.Type != arg2.Type) {
return new Error("Data types must be equivalent when comparing");
}
if (arg1.Type != DataTypes.Number && command.Value != "equal") {
return new Error("Non-Numbers can only be tested for equality using 'equals'");
}
switch (arg1.Type) {
case DataTypes.Number:
Number num1 = (Number)arg1;
Number num2 = (Number)arg2;
if (command.Value == "gthan") {
result = num1.Value > num2.Value;
} else if (command.Value == "lthan") {
result = num1.Value < num2.Value;
} else { // equal
result = num1.Value == num2.Value;
}
break;
default:
result = arg1.getValueAsString() == arg2.getValueAsString();
break;
}
return new Bool(result);
}
private Lexicon evaluatedType(Command command)
{
if (inputSize() < 1) {
return new Error("There must be at least 1 Command provided");
}
Lexicon result = execute(nextLexicon());
return new Atom(result.Type.ToString());
}
// There's gotta be a better way to typecast this stuff
private Lexicon echo(Command command)
{
Lexicon lex;
string output = "";
while (null != (lex = nextLexicon())) {
output += lex.getValueAsString() + " ";
}
return new ComplexAtom(output);
}
private Lexicon dv(Command command)
{
// (9.8 * ISP) * ln ( M_full / M_empty )
return new ComplexAtom("Command currently unsupported");
// _vessel.GetDeltaV().ToString());
}
private Lexicon crewCount(Command command)
{
return new Number(_vessel.GetCrewCount());
}
private Lexicon blank(Command command)
{
// when the user presses enter, just print a newline
return new Atom("");
}
private Lexicon airPressure(Command command)
{
return new Number(FlightGlobals.getStaticPressure(_vessel.GetWorldPos3D()));
}