public override Ast.Node Transform(ParseScope Scope)
{
List = List.Transform(Scope);
ResultType = List.ResultType;
//Try to find an access macro for this type.
var getterArguments = DummyArguments(Keyword("GET"), Keyword("AT"), Term(Scope.FindType("NUMBER")),
Keyword("FROM"), Term(List.ResultType));
var indexerMacro = Scope.FindAllPossibleMacroMatches(getterArguments).Where(d =>
ExactDummyMatch(d.Terms, getterArguments)).FirstOrDefault();
if (indexerMacro == null)
throw new CompileError("No macro of the form GET AT NUMBER FROM " +
List.ResultType.Name + " found.", Source);
var lengthArguments = DummyArguments(Keyword("LENGTH"), Keyword("OF"), Term(List.ResultType));
var lengthMacro = Scope.FindAllPossibleMacroMatches(lengthArguments).Where(d =>
ExactDummyMatch(d.Terms, lengthArguments)).FirstOrDefault();
if (lengthMacro == null)
throw new CompileError("No macro of the form LENGTH OF " + List.ResultType.Name + " found.", Source);
var nestedScope = Scope.Push(ScopeType.Block);
ResultVariable = nestedScope.NewLocal("__result@" + VariableName, Scope.FindType("LIST"));
ListVariable = nestedScope.NewLocal("__list@" + VariableName, Scope.FindType("LIST"));
TotalVariable = nestedScope.NewLocal("__total@" + VariableName, Scope.FindType("NUMBER"));
CounterVariable = nestedScope.NewLocal("__counter@" + VariableName, Scope.FindType("NUMBER"));
ValueVariable = nestedScope.NewLocal(VariableName, indexerMacro.ReturnType);
Indexer = Ast.StaticInvokation.CreateCorrectInvokationNode(Source, nestedScope, indexerMacro,
new List<Ast.Node>(new Ast.Node[] {
new Ast.Identifier(new Token { Type = TokenType.Identifier, Value = "__counter@"+VariableName }),
new Ast.Identifier(new Token { Type = TokenType.Identifier, Value = "__list@"+VariableName })
})).Transform(nestedScope);
LengthFunc = Ast.StaticInvokation.CreateCorrectInvokationNode(Source, nestedScope, lengthMacro,
new List<Ast.Node>(new Ast.Node[] {
new Ast.Identifier(new Token { Type = TokenType.Identifier, Value = "__list@"+VariableName })
})).Transform(nestedScope);
Condition = Condition.Transform(nestedScope);
if (Condition.ResultType.Name != "BOOLEAN")
throw new CompileError("Condition to where clause must return boolean", Source);
return this;
}
public void ResolveTypes(ParseScope Scope)
{
try
{
DeclarationScope = Scope.Push(ScopeType.Function);
DeclarationScope.Owner = this;
if (!String.IsNullOrEmpty(ReturnTypeName))
{
ReturnType = Scope.FindType(ReturnTypeName);
if (ReturnType == null)
{
if (Body != null && Body.Body != null)
throw new CompileError("Could not find type '" +
ReturnTypeName + "'.", Body.Body.Source);
else
throw new CompileError("Could not find type '" +
ReturnTypeName + "'.");
}
}
else
ReturnType = EtcScriptLib.Type.Void;
CreateParameterDescriptors();
var header = DescriptiveHeader;
if (Body != null) Body.Name = header;
if (WhenClause != null) WhenClause.Name = header + " : when ...";
}
catch (Exception e)
{
throw new CompileError(e.Message + " while resolving types on " + DescriptiveHeader + "\n" + e.StackTrace);
}
}
public override Ast.Node Transform(ParseScope Scope)
{
ResultType = Type.Void;
Max = Max.Transform(Scope);
var nestedScope = Scope.Push(ScopeType.Block);
TotalVariable = nestedScope.NewLocal("__total@" + VariableName, Scope.FindType("NUMBER"));
Min = Min.Transform(nestedScope);
CounterVariable = nestedScope.NewLocal("__counter@" + VariableName, Scope.FindType("NUMBER"));
ValueVariable = nestedScope.NewLocal(VariableName, Scope.FindType("NUMBER"));
Body = Body.Transform(nestedScope);
return this;
}