132 lines
5.2 KiB
C#
132 lines
5.2 KiB
C#
//-----------------------------------------------------------------------
|
|
//-----------------------------------------------------------------------
|
|
// file="ExpSyntaxAnalyzer.OperatorParser.cs"
|
|
// 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;
|
|
}
|
|
}
|
|
|
|
}
|
|
}
|