public static Result Run(UnsetExpression unset, Scope scope)
{
foreach (Expression expr in unset.Variables)
{
switch (expr)
{
case ArrayAccessExpression array_access_expression:
ArrayInterpreter.Resolve(array_access_expression, scope, (arr, key) =>
{
arr.Set(new ArrayItem(key, new NullExpression()));
});
break;
case VariableExpression variable_expression:
IVariable variable = scope.Variables.EnsureExists(variable_expression.Name);
variable.Value = new NullExpression();
break;
default:
Log.Error($"Cannot execute unset expression: Left Value is of unknown type {expr}");
break;
}
}
return(Result.NULL);
}
public static Result Run(UnaryExpression expression, Scope scope)
{
Result value_result = Interpreters.Execute(expression.Value, scope);
if (value_result.FastReturn)
{
return(value_result);
}
FinalExpression value = value_result.ResultValue;
switch (expression.Operation)
{
case UnaryOp.CAST_STRING:
return(new Result(new StringExpression(value.GetStringValue())));
case UnaryOp.CAST_BOOL:
return(new Result(new BoolExpression(value.GetBoolValue())));
case UnaryOp.CAST_ARRAY:
return(ArrayInterpreter.Run(new ArrayCreateExpression(ImmutableArray <ArrayItemExpression> .Empty), scope));
case UnaryOp.CAST_OBJECT:
return(new Result(value));
case UnaryOp.LOGICAL_NEGATION:
return(new Result(new BoolExpression(!value.GetBoolValue())));
case UnaryOp.IS_EMPTY:
return(new Result(new BoolExpression(string.IsNullOrEmpty(value.GetStringValue()))));
case UnaryOp.AT_SIGN:
return(new Result(value));
default:
Log.Error($"Unable to execute binary operation: {expression.Operation}");
return(Result.NULL);
}
}
public static Result Run(AssignExpression assign, Scope scope)
{
Result right_result = Interpreters.Execute(assign.Right, scope);
if (right_result.FastReturn)
{
return(right_result);
}
switch (assign.Left)
{
case ArrayAccessExpression array_access_expression:
ArrayInterpreter.Resolve(array_access_expression, scope, (arr, key) =>
{
arr.Set(new ArrayItem(key, right_result.ResultValue));
});
break;
case VariableExpression variable_expression:
IVariable variable = scope.Variables.EnsureExists(variable_expression.Name);
variable.Value = right_result.ResultValue;
break;
case StaticFieldAccessExpression static_field_access_expression:
ClassInterpreter.Resolve(static_field_access_expression, scope, (var) =>
{
var.Value = right_result.ResultValue;
});
break;
default:
Log.Error($"Cannot execute assign expression: Left Value is of unknown type {assign.Left}");
break;
}
return(right_result);
}
public static Result Execute(Expression expression, Scope scope)
{
if (expression == null)
{
return(Result.NULL);
}
switch (expression)
{
case FinalExpression e:
return(new Result(e));
case DocExpression e:
return(Result.NULL);
case RequireFileExpression e:
return(RequireFileInterpreter.Run(e, scope));
case BlockExpression e:
return(BlockInterpreter.Run(e, scope));
case ConditionalBlockExpression e:
return(ConditionalBlockInterpreter.Run(e, scope));
case WhileExpression e:
return(WhileInterpreter.Run(e, scope));
case ForeachExpression e:
return(ForeachInterpreter.Run(e, scope));
case TryExpression e:
return(TryInterpreter.Run(e, scope));
case BreakExpression e:
return(BreakInterpreter.Run(e, scope));
case ContinueExpression e:
return(ContinueInterpreter.Run(e, scope));
case ReturnExpression e:
return(ReturnInterpreter.Run(e, scope));
case BinaryExpression e:
return(BinaryInterpreter.Run(e, scope));
case UnaryExpression e:
return(UnaryInterpreter.Run(e, scope));
case CallParameter e:
return(CallParameterInterpreter.Run(e, scope));
case FunctionCallExpression e:
return(FunctionInterpreter.Run(e, scope));
case FunctionDeclarationExpression e:
return(FunctionInterpreter.Run(e, scope));
case MethodCallExpression e:
return(ClassInterpreter.Run(e, scope));
case StaticMethodCallExpression e:
return(ClassInterpreter.Run(e, scope));
case ClassDeclarationExpression e:
return(ClassInterpreter.Run(e, scope));
case NewInstanceExpression e:
return(ClassInterpreter.Run(e, scope));
case StaticFieldAccessExpression e:
return(ClassInterpreter.Run(e, scope));
case ArrayCreateExpression e:
return(ArrayInterpreter.Run(e, scope));
case ArrayAccessExpression e:
return(ArrayInterpreter.Run(e, scope));
case VariableExpression e:
return(VariableInterpreter.Run(e, scope));
case PseudoConstExpression e:
return(VariableInterpreter.Run(e, scope));
case AssignExpression e:
return(AssignInterpreter.Run(e, scope));
case UnsetExpression e:
return(AssignInterpreter.Run(e, scope));
default:
Log.Error($"Unable to execute expression: {expression}");
return(Result.NULL);
}
}