public DMVariable(DreamPath?type, string name, bool isGlobal)
{
Type = type;
Name = name;
IsGlobal = isGlobal;
Value = null;
}
public ListIndex(Location location, DMExpression expr, DMExpression index, DreamPath?path, bool conditional)
: base(location, path)
{
_expr = expr;
_index = index;
_conditional = conditional;
}
public Dereference(Location location, DreamPath?path, DMExpression expr, bool conditional, string propertyName)
: base(location, null)
{
_expr = expr;
_conditional = conditional;
PropertyName = propertyName;
_path = path;
}
public void VisitUpwardPathSearch(DMASTUpwardPathSearch constant)
{
DMExpression.TryConstant(_dmObject, _proc, constant.Path, out var pathExpr);
if (pathExpr is not Expressions.Path)
{
throw new CompileErrorException(constant.Location, "Cannot do an upward path search on " + pathExpr);
}
DreamPath path = ((Expressions.Path)pathExpr).Value;
DreamPath?foundPath = DMObjectTree.UpwardSearch(path, constant.Search.Path);
if (foundPath == null)
{
throw new CompileErrorException(constant.Location, $"Invalid path {path}.{constant.Search.Path}");
}
Result = new Expressions.Path(constant.Location, foundPath.Value);
}
public LocalConstVariable(int id, DreamPath?type, Expressions.Constant value) : base(id, false, type)
{
Value = value;
}
public LocalVariable(int id, bool isParameter, DreamPath?type)
{
Id = id;
IsParameter = isParameter;
Type = type;
}
public LValue(Location location, DreamPath?path) : base(location)
{
_path = path;
}
public Src(Location location, DreamPath?path)
: base(location, path)
{
}
public GlobalField(Location location, DreamPath?path, int id)
: base(location, path)
{
Id = id;
}
internal DMVisitorExpression(DMObject dmObject, DMProc proc, DreamPath?inferredPath)
{
_dmObject = dmObject;
_proc = proc;
_inferredPath = inferredPath;
}
public DreamValueAsObjectEnumerator(IEnumerable <DreamValue> dreamValues, DreamPath?filterType = null)
{
_dreamValueEnumerator = dreamValues.GetEnumerator();
_filterType = filterType;
}
public DreamObjectEnumerator(IEnumerable <DreamObject> dreamObjects, DreamPath?filterType = null)
{
_dreamObjectEnumerator = dreamObjects.GetEnumerator();
_filterType = filterType;
}
public DMLocalVariable(int id, DreamPath?type)
{
Id = id;
Type = type;
}
public static void Emit(DMObject dmObject, DMProc proc, DMASTExpression expression, DreamPath?inferredPath = null)
{
var expr = Create(dmObject, proc, expression, inferredPath);
expr.EmitPushValue(dmObject, proc);
}
public static DMExpression Create(DMObject dmObject, DMProc proc, DMASTExpression expression, DreamPath?inferredPath = null)
{
var instance = new DMVisitorExpression(dmObject, proc, inferredPath);
expression.Visit(instance);
return(instance.Result);
}
