public void ExitHandleExtern(Expr.Prototype data)
{
var value = this._visitor.Visit(data);
if (value == null)
{
return;
}
this._visitor.FunctionProtos[data.Name] = data;
}
/// toplevelexpr ::= expression
private Expr.Function ParseTopLevelExpr()
{
//Console.WriteLine($"ParseTopLevelExpr: {this._scanner.CurrentToken}");
var e = this.ParseExpression();
if (e == null)
{
return(null);
}
// Make an anonymous proto.
var proto = new Expr.Prototype("__anon_expr", new string[0], false, 0);
return(new Expr.Function(proto, e));
}
private IrFunction GetOrDeclareFunction(Expr.Prototype prototype)
{
var function = this.Module.GetFunction(prototype.Name);
if (function != null)
{
return(function);
}
var llvmSignature = this._ctx.GetFunctionType(this._ctx.DoubleType, prototype.Arguments.Select(_ => this._ctx.DoubleType));
var retVal = this.Module.AddFunction(prototype.Name, llvmSignature);
retVal.Linkage = Linkage.External;
int index = 0;
foreach (var argId in prototype.Arguments)
{
retVal.Parameters[index].Name = argId;
++index;
}
return(retVal);
}
public Value Visit(Expr.Prototype stmt)
{
return(this.GetOrDeclareFunction(stmt));
}
public void EnterHandleExtern(Expr.Prototype data)
{
}
public void ExitHandleExtern(Expr.Prototype data)
{
//Console.WriteLine($"ExitHandleExtern {data.Name}");
this._visitor.NextIsExtern = true;
this._visitor.Visit(data);
}
