private ForLoop ResolveWithRange(Expression[] rangeArgs)
{
List<Executable> init = new List<Executable>();
Expression increment = new IntegerConstant(null, 1);
if (rangeArgs.Length == 3)
{
if (rangeArgs[2] is IntegerConstant || rangeArgs[2] is Variable)
{
increment = rangeArgs[2];
}
string variableName = "crayon_conversion_step_" + VARIABLE_ALLOCATION_COUNTER++;
init.Add(new Assignment(new Variable(null, variableName), new Token("=", null, 0, 0, TokenType.OTHER), rangeArgs[2]));
increment = new Variable(null, variableName);
}
Expression start = new IntegerConstant(null, 0);
// if 2 or 3 are present, then an explicit start is given
if (rangeArgs.Length > 1)
{
start = rangeArgs[0];
}
Expression end = null;
if (rangeArgs.Length == 1)
{
end = rangeArgs[0];
}
else
{
end = rangeArgs[1];
}
if (end is IntegerConstant || end is Variable)
{
// this is fine
}
else
{
string variableName = "crayon_conversion_length_" + VARIABLE_ALLOCATION_COUNTER++;
init.Add(new Assignment(new Variable(null, variableName), new Token("=", null, 0, 0, TokenType.OTHER), end));
end = new Variable(null, variableName);
}
init.Add(new Assignment(new Variable(this.IteratorVariable, this.IteratorVariable.Value), new Token("=", null, 0, 0, TokenType.OTHER), start));
Expression condition = new BinaryOpChain(
new Expression[] {
new Variable(this.IteratorVariable, this.IteratorVariable.Value),
end },
new Token[] { new Token("<", null, 0, 0, TokenType.OTHER) });
List<Executable> step = new List<Executable>()
{
new Assignment(
new Variable(this.IteratorVariable, this.IteratorVariable.Value),
new Token("+=", null, 0, 0, TokenType.OTHER),
increment)
};
return new ForLoop(this.FirstToken, this, init, condition, step, this.Body);
}
private void SerializeVariable(List<string> output, Variable variable)
{
if (variable.Value == "self")
{
output.Add("this");
}
else
{
output.Add(variable.Value);
}
}
private void SerializeVariable(List<string> output, Variable variable)
{
output.Add(variable.Value);
}