129 lines
5.0 KiB
C#
129 lines
5.0 KiB
C#
//-----------------------------------------------------------------------
|
|
// -----------------------------------------------------------------------
|
|
// file="ExpSyntaxAnalyzer.OperatorParser"
|
|
// Project: StgSharp
|
|
// AuthorGroup: Nitload Space
|
|
// Copyright (c) Nitload Space. All rights reserved.
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
// of this software and associated documentation files (the "Software"), to deal
|
|
// in the Software without restriction, including without limitation the rights
|
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
// copies of the Software, and to permit persons to whom the Software is
|
|
// furnished to do so, subject to the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included in all
|
|
// copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
// SOFTWARE.
|
|
//
|
|
// -----------------------------------------------------------------------
|
|
// -----------------------------------------------------------------------
|
|
using StgSharp.Script;
|
|
using StgSharp.Script.Express;
|
|
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.Linq;
|
|
using System.Text;
|
|
using System.Threading.Tasks;
|
|
|
|
using ExpKeyword = StgSharp.Script.Express.ExpressCompile.Keyword;
|
|
|
|
namespace StgSharp.Model.Step
|
|
{
|
|
internal partial class StepExpSyntaxAnalyzer
|
|
{
|
|
|
|
public int CompareOperatorPrecedence(Token left, Token right)
|
|
{
|
|
ExpressCompile.TryGetOperatorPrecedence(left.Value, out int leftPrecedence);
|
|
ExpressCompile.TryGetOperatorPrecedence(right.Value, out int rightPrecedence);
|
|
return leftPrecedence - rightPrecedence;
|
|
}
|
|
|
|
public bool TryGenerateUnaryNode(Token t, out ExpSyntaxNode node)
|
|
{
|
|
ExpSyntaxNode operand = GetNextOperandCache();
|
|
switch (t.Value)
|
|
{
|
|
case ExpKeyword.UnaryPlus:
|
|
node = ExpUnaryOperatorNode.UnaryPlus(t, operand);
|
|
return true;
|
|
case ExpKeyword.UnaryMinus:
|
|
node = ExpUnaryOperatorNode.UnaryMinus(t, operand);
|
|
return true;
|
|
case ExpKeyword.Not:
|
|
node = ExpUnaryOperatorNode.UnaryNot(t, operand);
|
|
return true;
|
|
default:
|
|
node = ExpSyntaxNode.Empty;
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// WARNING: This method cannot process INDEXOF, FUNCTION CALLING, LOOP and any ENDING
|
|
/// SYMBOLS.
|
|
/// </summary>
|
|
private ExpSyntaxNode ConvertAndPushOneOperator(Token op)
|
|
{
|
|
switch (op.Flag)
|
|
{
|
|
case TokenFlag.Symbol_Unary:
|
|
TryGenerateUnaryNode(op, out ExpSyntaxNode? node);
|
|
_cache.PushOperand(node);
|
|
return node;
|
|
case TokenFlag.Symbol_Binary:
|
|
TryGenerateBinaryNode(op, out node);
|
|
_cache.PushOperand(node);
|
|
return node;
|
|
case TokenFlag.Member:
|
|
_cache.PopOperand(out _, out ExpSyntaxNode? p);
|
|
StepEntityInitCaller caller = StepEntityInitCaller.CreateCaller(op.Value);
|
|
node = ExpFunctionCallingNode.CallFunction(op, caller, p);
|
|
_cache.StatementsInDepth.Push(node);
|
|
return node;
|
|
default:
|
|
throw new NotImplementedException();
|
|
}
|
|
}
|
|
|
|
private bool TryGenerateBinaryNode(Token t, out ExpSyntaxNode node)
|
|
{
|
|
/*
|
|
ExpSyntaxNode right = GetNextOperandCache();
|
|
ExpSyntaxNode left = GetNextOperandCache();
|
|
/**/
|
|
switch (t.Value)
|
|
{
|
|
case "=":
|
|
ExpSyntaxNode right = GetNextOperandCache();
|
|
ExpSyntaxNode left;
|
|
if (right is ExpTupleNode tuple)
|
|
{
|
|
right = StepComplexEntityNode.FromTuple(tuple);
|
|
left = GetNextOperandCache();
|
|
} else
|
|
{
|
|
left = right;
|
|
right = _cache.StatementsInDepth.Pop();
|
|
}
|
|
|
|
node = ExpBinaryOperatorNode.Assign(t, left, right);
|
|
return true;
|
|
default:
|
|
node = ExpSyntaxNode.Empty;
|
|
return false;
|
|
}
|
|
}
|
|
|
|
}
|
|
}
|