public string Visit(FunctionExpression function)
{
var codeWriter = new XzaarCodeWriter();
codeWriter.Write("fn " + function.Name + "(", currentIndent);
codeWriter.Write(string.Join(", ", function.Parameters.Select(v => v.Name + ":" + v.Type.Name).ToArray()));
codeWriter.Write(") ");
if (function.ReturnType.Name != "void")
{
codeWriter.Write("-> " + function.ReturnType.Name + " ");
}
codeWriter.Write("{");
codeWriter.NewLine();
var body = function.GetBody();
if (body != null)
{
currentIndent++;
codeWriter.Write(Visit(body));
currentIndent--;
}
codeWriter.Write("}", currentIndent);
codeWriter.NewLine();
return(codeWriter.ToString());
}
public object Visit(FunctionExpression function)
{
var methods = ctx.GetCurrentTypeMethods();
var method = ctx.CurrentMethod = methods.First(x => x.Name == function.Name);
if (ctx.GetMethodBodyDefined(method))
{
throw new InvalidOperationException($"A function with the same name '{function.Name}' already exists");
}
// il.Emit(OpCodes.Ldarg_0);
var body = Visit(function.GetBody());
var il = method.GetILGenerator();
// TODO: Check if previous item was a return or not, because we don't want duplicates
if (il.LastEmittedOpCode != OpCodes.Ret)
{
il.Return();
}
ctx.SetMethodBodyDefined(method, true);
ctx.CurrentMethod = ctx.MainMethod;
return(method);
}
public FunctionExpression Visit(FunctionExpression function)
{
codeWriter.Write("fn " + function.Name + "(", currentIndent);
codeWriter.Write(string.Join(", ", function.GetParameters().Select(v => v.Type.Name + " " + v.Name).ToArray()));
codeWriter.Write(") {");
codeWriter.NewLine();
var body = function.GetBody();
if (body != null)
{
currentIndent++;
Visit(body);
currentIndent--;
}
codeWriter.Write("}", currentIndent);
codeWriter.NewLine();
return(null);
}
