private static IIntegerReturningStatement ParseFunctionEvalulation(StringAbstraction s,
FunctionDefinitionSet functionSet)
{
var args = new List <StringAbstraction>(s.AfterFirstArrow().Split(","));
return(new CallIntegerReturningFunction(args.Select(x => ParseIntReturningExpression(x, functionSet)).ToList(),
functionSet, new FunctionName(s.Split(">")[0].Value())));
}
private static IIntegerReturningStatement ParseSum(StringAbstraction s, FunctionDefinitionSet functionSet)
{
List <StringAbstraction> args = s.AfterFirstColon().Split(",");
IIntegerReturningStatement a = ParseIntReturningExpression(args[0], functionSet);
IIntegerReturningStatement b = ParseIntReturningExpression(args[1], functionSet);
return(new Sum(a, b));
}
private static IBooleanReturningStatement ParseLessThanCondition(CodeFileAbstraction codeFile,
FunctionDefinitionSet functionSet)
{
StringAbstraction expression = codeFile.GetCurrentLine().AfterFirstColon();
IIntegerReturningStatement smaller = ParseIntReturningExpression(expression.BeforeFirstOccuranceOf("<"), functionSet);
IIntegerReturningStatement bigger = ParseIntReturningExpression(expression.AfterFirstOccuranceOf("<"), functionSet);
IBooleanReturningStatement condition = new CompareLessThan(smaller, bigger);
return(condition);
}
private static IIntegerReturningStatement ParseIntReturningExpression(StringAbstraction s, FunctionDefinitionSet functionSet)
{
if (s.IsNumeric())
{
return(s.GetIntValue());
}
if (s.Contains(">"))
{
return(ParseFunctionEvalulation(s, functionSet));
}
if (s.StartsWith("sum:"))
{
return(ParseSum(s, functionSet));
}
if (s.StartsWith("-"))
{
return(new Negation(new IntVariableEvaluation(new VariableName(s.AfterFirstOccuranceOf("-").Value()))));
}
return(new IntVariableEvaluation(new VariableName(s.Value())));
}
private static void ParseVariableDeclaration(FunctionDefinitionSet functionSet, StringAbstraction s, Block block)
{
var split = s.Split("=");
IIntegerReturningStatement toSetTo = ParseIntReturningExpression(s.AfterFirstOccuranceOf("="), functionSet);
block.AddChild(new IntegerAssignment(new VariableName(s.BeforeFirstOccuranceOf("=").ToString()), toSetTo));
}
private void ParseFunctionDefinition(CodeFileAbstraction codeFile, FunctionDefinitionSet functionSet, StringAbstraction s)
{
List <StringAbstraction> args = new List <StringAbstraction>(codeFile.GetCurrentLine().AfterFirstPipe().Split(","));
Block functionBlock = GetBlock(codeFile, functionSet);
functionSet.Add(new FunctionName(s.BeforeFirstOccuranceOf("|").Value()),
new IntReturningFunction(
functionBlock,
ParseIntReturningExpression(codeFile.GetCurrentLine().Replace("return", ""), functionSet),
args.Select(x => new VariableName(x.Value())).ToList()
));
}
