291 lines
9.8 KiB
C#
291 lines
9.8 KiB
C#
//-----------------------------------------------------------------------
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// -----------------------------------------------------------------------
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// file="ExpSyntaxAnalyzer.Common"
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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 obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// 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 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.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.Script.Express
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{
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public partial class ExpSyntaxAnalyzer
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{
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private bool IsSeparatorMatch(Token leftSperator, Token rightSeparator)
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{
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return leftSperator.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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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 (ExpKeyword.BuiltinFunctions.Contains(t.Value))
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{
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_cache.PushOperator(t);
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return true;
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} else if (_context.TryGetFunction(t.Value, out ExpFunctionSource? f))
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{
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_cache.PushOperand(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 TryParseInstance(Token t)
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{
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if (_local.TryGetMember(t.Value,
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out ExpSyntaxNode? node) &&
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node is ExpElementInstance instance)
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{
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_cache.PushOperand(ExpInstanceReferenceNode.MakeReferenceFrom(t, instance));
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return true;
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} else if (_tempVariableInLoops.TryGetValue(t.Value, out instance!))
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{
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_cache.PushOperand(ExpInstanceReferenceNode.MakeReferenceFrom(t, instance));
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return true;
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} else if (_cache.IsLastAddedOperator)
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{
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if (_cache.PeekOperand(out _,
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out ExpSyntaxNode? typenode) &&
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typenode is ExpMetaRefNode typeRef)
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{
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_cache.PopOperand(out _, out _);
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_local.AddMember(t.Value, typeRef.SourceRef.CreateInstanceNode(t));
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} else
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{
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return false;
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}
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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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