282 lines
9.5 KiB
C#
282 lines
9.5 KiB
C#
//-----------------------------------------------------------------------
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//-----------------------------------------------------------------------
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// file="ExpSyntaxAnalyzer.Common.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 Microsoft.CodeAnalysis.CSharp.Syntax;
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using StgSharp.Script;
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using StgSharp.Script.Express;
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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.Runtime.CompilerServices;
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using System.Text;
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using System.Text.RegularExpressions;
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using System.Threading.Tasks;
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using System.Xml.Schema;
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using ExpKeyword = StgSharp.Script.Express.ExpressCompile.Keyword;
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namespace StgSharp.Modeling.Step
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{
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internal partial class StepExpSyntaxAnalyzer
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{
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private static Regex _entityTypeCheckPattern = GetEntityTypeCheckPattern();
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[GeneratedRegex( @"^[A-Z_]+$", RegexOptions.Singleline )]
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private static partial Regex GetEntityTypeCheckPattern();
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private bool IsSeparatorMatch( Token leftSeparator, Token rightSeparator )
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{
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return leftSeparator.Value switch
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{
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ExpKeyword.LeftBrace => rightSeparator.Value == ExpKeyword.RightBrace,
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ExpKeyword.LeftParen => rightSeparator.Value == ExpKeyword.RightParen,
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ExpKeyword.Comma => rightSeparator.Value == ExpKeyword.Comma,
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ExpKeyword.Semicolon => rightSeparator.Value == ExpKeyword.Semicolon,
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_ => false
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};
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}
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private bool TryAppendIndexLeft( Token t )
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{
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if( t.Flag != TokenFlag.Index_Left ) {
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return false;
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}
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if( _cache.TryPeekOperand( out bool isNode, out _, out ExpSyntaxNode? node ) )
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{
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if( node.EqualityTypeConvert is not ExpCollectionBase ) {
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ExpInvalidSyntaxException.ThrowNonCollectionIndex( t );
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}
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}
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_cache.PushOperator( t );
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_cache.IncreaseDepth( ( int )ExpCompileStateCode.CollectionIndex );
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return true;
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}
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private bool TryAppendIndexRight( Token t )
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{
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if( t.Flag != TokenFlag.Index_Right ) {
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return false;
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}
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//reverse building
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ClosePrefixReverse( t );
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//make index node
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_cache.PopOperand( out _, out ExpSyntaxNode? expNode );
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if( !_cache.PopOperand( out Token colleToken, out ExpSyntaxNode? colleNode ) ) { }
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_cache.PushOperand(
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ExpCollectionIndexNode.Create(
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t, ( colleNode as ExpCollectionInstanceBase )!, expNode ) );
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return true;
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}
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private bool TryAppendMember( Token t )
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{
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if( t.Flag != TokenFlag.Member ) {
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return false;
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}
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if( TryParseConstant( t ) ) {
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return true;
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}
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if( TryParseFunction( t ) ) {
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return true;
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}
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if( TryParseInstance( t ) ) {
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return true;
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}
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if( TryParseKeyword( t ) ) {
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return true;
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}
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if( TryParseElementName( t ) ) {
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return true;
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}
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//Many thing miss here
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_cache.PushOperand( ExpElementMemberNameNode.Create( t ) );
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return true;
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}
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private bool TryAppendMiddleSeparator( Token t )
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{
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if( t.Flag != TokenFlag.Separator_Middle ) {
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return false;
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}
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while( _cache.OperatorAheadOfDepth > 0 )
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{
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_cache.TryPopOperator( out Token op );
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ExpSyntaxNode node = ConvertAndPushOneOperator( op );
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}
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switch( _cache.OperandAheadOfDepth )
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{
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case 0:
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if( t.Value == ";" ) {
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return true;
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}
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_cache.StatementsInDepth.Push( ExpSyntaxNode.Empty );
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goto case 1;
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case 1:
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_cache.PopOperand( out _, out ExpSyntaxNode? statement );
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_cache.StatementsInDepth.Push( statement );
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if( t.Value == ";" ) {
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StepEntityInitStatements.Enqueue( statement );
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}
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return true;
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default:
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ExpInvalidSyntaxException.ThrowNoOperator( t );
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break;
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}
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return true;
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}
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private bool TryAppendNumAndStrLiteral( Token t )
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{
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if( ( t.Flag & ( TokenFlag.String | TokenFlag.Number ) ) == 0 ) {
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return false;
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}
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_cache.PushOperand( ExpElementInstance.CreateLiteral( t ) );
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return true;
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}
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private bool TryAppendPrefixSeparator( Token t )
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{
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if( t.Flag != TokenFlag.Separator_Left ) {
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return false;
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}
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_cache.PushOperator( t );
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_cache.IncreaseDepth( ( int )ExpCompileStateCode.Common );
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return true;
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}
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private bool TryAppendPrefixSeparatorEnd( Token t )
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{
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if( t.Flag != TokenFlag.Separator_Right ) {
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return false;
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}
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ClosePrefixReverse( t );
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return true;
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}
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private bool TryAppendSymbol( Token t )
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{
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if( ( t.Flag & ( TokenFlag.Symbol_Unary | TokenFlag.Symbol_Binary ) ) == 0 ) {
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return false;
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}
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int cmp = -1;
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processPrecedence:
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if( _cache.TryPeekOperator( out Token tmp ) )
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{
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cmp = CompareOperatorPrecedence( t, tmp );
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if( cmp >= 0 )
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{
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_cache.PopOperator();
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ExpSyntaxNode node = ConvertAndPushOneOperator( tmp );
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goto processPrecedence;
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}
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}
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_cache.PushOperator( t );
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return true;
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}
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private bool TryParseConstant( Token t )
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{
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switch( t.Value )
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{
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case ExpKeyword.E:
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_cache.PushOperand( new ExpRealNumberNode( t, MathF.E, true ) );
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return true;
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case ExpKeyword.Pi:
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_cache.PushOperand( new ExpRealNumberNode( t, MathF.PI, true ) );
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return true;
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default:
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if( ExpElementInstance.TryCreateLiteral( t, out ExpElementInstance? node ) )
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{
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_cache.PushOperand( node );
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return true;
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}
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return false;
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}
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}
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private bool TryParseElementName( Token t )
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{
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if( _context.TryGetType( t.Value, out ExpTypeSource? type ) )
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{
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_cache.PushOperand( ExpMetaRefNode.RefType( t, type ) );
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return true;
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}
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if( _context.TryGetEntity( t.Value, out ExpEntitySource? entity ) )
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{
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_cache.PushOperand( ExpMetaRefNode.RefEntity( t, entity ) );
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return true;
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}
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return false;
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}
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private bool TryParseFunction( Token t )
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{
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if( _entityTypeCheckPattern.IsMatch( t.Value ) ) {
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_cache.PushOperator( t );
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}
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return false;
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}
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private bool TryParseInstance( Token t )
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{
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if( t.Value[ 0 ] == '#' )
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{
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_cache.PushOperand( StepEntityInstanceNode.Register( t ) );
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return true;
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}
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return false;
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}
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private bool TryParseKeyword( Token t )
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{
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switch( t.Value )
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{
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case ExpKeyword.Return:
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_cache.PushOperator( t );
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return true;
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case ExpKeyword.Skip:
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_cache.PushOperand( ExpProcedureControlNode.Skip( t ) );
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return true;
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default:
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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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