95 lines
3.8 KiB
C#
95 lines
3.8 KiB
C#
//-----------------------------------------------------------------------
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//-----------------------------------------------------------------------
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// file="GenerateOperatorToken.cs"
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// Project: StgSharp
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// AuthorGroup: Nitload Space
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// Copyright (c) Nitload Space. All rights reserved.
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//
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// Permission is hereby granted, free of charge, to any person
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// obtaining a copy of this software and associated documentation
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// files (the “Software”), to deal in the Software without restriction,
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// including without limitation the rights to use, copy, modify, merge,
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// publish, distribute, sublicense, and/or sell copies of the Software,
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// and to permit persons to whom the Software is furnished to do so,
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// subject to the following conditions:
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//
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// The above copyright notice and
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// this permission notice shall be included in all copies
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// or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED “AS IS”,
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// WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH
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// THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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//-----------------------------------------------------------------------
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//-----------------------------------------------------------------------
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace StgSharp.Script.Express
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{
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public partial class ExpNodeGenerator
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{
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public int CompareOperatorPrecedence( Token left, Token right )
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{
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ExpCompile.TryGetOperatorPrecedence(
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left.Value, out int leftPrecedence );
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ExpCompile.TryGetOperatorPrecedence(
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right.Value, out int rightPrecedence );
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return leftPrecedence - rightPrecedence;
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}
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public bool TryGenerateBinaryNode( Token t, out ExpNode node )
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{
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ExpNode left = GetNextOperandCache();
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ExpNode right = GetNextOperandCache();
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switch( t.Value ) {
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case ExpCompile.KeyWord.ADD:
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node = ExpBinaryOperatorNode.Add( left, right );
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return true;
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case ExpCompile.KeyWord.SUB:
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node = ExpBinaryOperatorNode.Sub( left, right );
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return true;
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case ExpCompile.KeyWord.MUL:
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node = ExpBinaryOperatorNode.Mul( left, right );
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return true;
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case ExpCompile.KeyWord.DIV:
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node = ExpBinaryOperatorNode.Div( left, right );
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return true;
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default:
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node = ExpNode.Empty;
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return false;
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}
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}
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public bool TryGenerateUnaryNode( Token t, out ExpNode node )
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{
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ExpNode operand = GetNextOperandCache();
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switch( t.Value ) {
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case ExpCompile.KeyWord.UnaryPlus:
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node = ExpUnaryOperatorNode.UnaryPlus( operand );
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return true;
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case ExpCompile.KeyWord.UnaryMinus:
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node = ExpUnaryOperatorNode.UnaryMinus( operand );
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return true;
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case ExpCompile.KeyWord.NOT:
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node = ExpUnaryOperatorNode.UnaryNot( operand );
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return true;
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default:
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node = ExpNode.Empty;
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return false;
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}
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}
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}
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}
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