add: 这就是完全的Pascal (#11)

5！8！4！个状态堂堂登场！

Co-authored-by: Ichirinko <1621543655@qq.com>
Reviewed-on: PostGuard/Canon#11

Canon.Core/Enums/GrammarEnums.cs

@@ -19,7 +19,7 @@ public enum NonTerminatorType
     VarDeclaration,
     Type,
     BasicType,
-    Range,
+    Period,
     Subprogram,
     SubprogramHead,
     SubprogramBody,
@@ -37,5 +37,9 @@ public enum NonTerminatorType
     ExpressionList,
     SimpleExpression,
     Term,
-    Factor
+    Factor,
+    AddOperator,
+    MultiplyOperator,
+    RelationOperator,
+    IdVarPart
 }

Canon.Core/Enums/SemanticEnums.cs

@@ -29,7 +29,15 @@ public enum DelimiterType
     LeftSquareBracket,
     RightSquareBracket,
     SingleQuotation,
-    DoubleQuotation
+    DoubleQuotation,
+    /// <summary>
+    /// 访问记录字段用的点 x.a
+    /// </summary>
+    Dot,
+    /// <summary>
+    /// 数组声明上下界之间的分隔符 1..50
+    /// </summary>
+    DoubleDots
 }
 
 public enum KeywordType
@@ -49,6 +57,15 @@ public enum KeywordType
     For,
     To,
     Do,
+    Integer,
+    Real,
+    Boolean,
+    Character,
+    Divide,
+    Not,
+    Mod,
+    And,
+    Or
 }
 
 public enum OperatorType
@@ -63,9 +80,6 @@ public enum OperatorType
     Minus,
     Multiply,
     Divide,
-    Mod,
-    And,
-    Or,
     Assign
 }
 

Canon.Tests/GrammarParserTests/PascalGrammarConstPart.cs

@@ -0,0 +1,413 @@
+using Canon.Core.Abstractions;
+using Canon.Core.Enums;
+using Canon.Core.GrammarParser;
+using Canon.Core.LexicalParser;
+
+namespace Canon.Tests.GrammarParserTests;
+
+public class PascalGrammarConstPart
+{
+    private static readonly Dictionary<NonTerminator, List<List<TerminatorBase>>> s_pascalGrammar = new()
+    {
+        {
+            // ProgramStart -> ProgramBody
+            new NonTerminator(NonTerminatorType.StartNonTerminator), [
+                [new NonTerminator(NonTerminatorType.ProgramBody)]
+            ]
+        },
+        {
+            // ProgramBody -> ConstDeclarations
+            new NonTerminator(NonTerminatorType.ProgramBody), [
+                [
+                    new NonTerminator(NonTerminatorType.ConstDeclarations),
+                    // new NonTerminator(NonTerminatorType.VarDeclarations),
+                    // new NonTerminator(NonTerminatorType.SubprogramDeclarations),
+                    // new NonTerminator(NonTerminatorType.CompoundStatement)
+                ]
+            ]
+        },
+        {
+            // ConstDeclarations -> ε | const ConstDeclaration ;
+            new NonTerminator(NonTerminatorType.ConstDeclarations), [
+                [
+                    Terminator.EmptyTerminator,
+                ],
+                [
+                    new Terminator(KeywordType.Const),
+                    new NonTerminator(NonTerminatorType.ConstDeclaration),
+                    new Terminator(DelimiterType.Semicolon)
+                ]
+            ]
+        },
+        {
+            // ConstDeclaration -> id = ConstValue | ConstDeclaration ; id = ConstValue
+            new NonTerminator(NonTerminatorType.ConstDeclaration), [
+                [
+                    Terminator.IdentifierTerminator,
+                    new Terminator(OperatorType.Equal),
+                    new NonTerminator(NonTerminatorType.ConstValue)
+                ],
+                [
+                    new NonTerminator(NonTerminatorType.ConstDeclaration),
+                    new Terminator(DelimiterType.Semicolon),
+                    Terminator.IdentifierTerminator,
+                    new Terminator(OperatorType.Equal),
+                    new NonTerminator(NonTerminatorType.ConstValue)
+                ]
+            ]
+        },
+        {
+            // ConstValue -> +num | -num | num | 'letter'
+            new NonTerminator(NonTerminatorType.ConstValue), [
+                [
+                    new Terminator(OperatorType.Plus), Terminator.NumberTerminator
+                ],
+                [
+                    new Terminator(OperatorType.Minus), Terminator.NumberTerminator,
+                ],
+                [
+                    Terminator.NumberTerminator,
+                ],
+                [
+                    new Terminator(DelimiterType.SingleQuotation),
+                    Terminator.CharacterTerminator,
+                    new Terminator(DelimiterType.SingleQuotation),
+                ]
+            ]
+        }
+    };
+
+    [Fact]
+    public void AstTestFirst()
+    {
+        GrammarBuilder builder = new()
+        {
+            Generators = s_pascalGrammar, Begin = new NonTerminator(NonTerminatorType.StartNonTerminator)
+        };
+
+        GrammarParserBase grammar = builder.Build().ToGrammarParser();
+
+        // const a = +5;
+        List<SemanticToken> tokens =
+        [
+            new KeywordSemanticToken
+            {
+                CharacterPos = 0, KeywordType = KeywordType.Const, LinePos = 0, LiteralValue = "const"
+            },
+            new IdentifierSemanticToken { LinePos = 0, CharacterPos = 0, LiteralValue = "a" },
+            new OperatorSemanticToken
+            {
+                LinePos = 0, CharacterPos = 0, LiteralValue = "=", OperatorType = OperatorType.Equal
+            },
+            new OperatorSemanticToken
+            {
+                LinePos = 0, CharacterPos = 0, LiteralValue = "+", OperatorType = OperatorType.Plus
+            },
+            new NumberSemanticToken
+            {
+                CharacterPos = 0, LinePos = 0, LiteralValue = "5", NumberType = NumberType.Integer
+            },
+            new DelimiterSemanticToken
+            {
+                CharacterPos = 0, DelimiterType = DelimiterType.Semicolon, LinePos = 0, LiteralValue = ";"
+            },
+            SemanticToken.End
+        ];
+
+
+        // ProgramBody
+        SyntaxNode root = grammar.Analyse(tokens);
+        Assert.Equal(NonTerminatorType.ProgramBody, root.GetNonTerminatorType());
+        Assert.Single(root.Children);
+        Assert.Equal(10, root.Count());
+
+        // ConstDeclarations
+        root = root.Children[0];
+        Assert.Equal(NonTerminatorType.ConstDeclarations, root.GetNonTerminatorType());
+        Assert.Equal(3, root.Children.Count);
+
+        Assert.Contains(root.Children, node =>
+        {
+            if (node.IsTerminated && node.GetSemanticToken().TokenType == SemanticTokenType.Keyword)
+            {
+                KeywordSemanticToken token = (KeywordSemanticToken)node.GetSemanticToken();
+
+                return token.KeywordType == KeywordType.Const;
+            }
+
+            if (node.IsTerminated && node.GetSemanticToken().TokenType == SemanticTokenType.Delimiter)
+            {
+                DelimiterSemanticToken token = (DelimiterSemanticToken)node.GetSemanticToken();
+
+                return token.DelimiterType == DelimiterType.Semicolon;
+            }
+
+            if (!node.IsTerminated && node.GetNonTerminatorType() == NonTerminatorType.ConstDeclaration)
+            {
+                return true;
+            }
+
+            return false;
+        });
+
+        // ConstDeclaration
+        root = root.Children.Where(child =>
+            !child.IsTerminated && child.GetNonTerminatorType() == NonTerminatorType.ConstDeclaration
+        ).ElementAt(0);
+
+        Assert.Equal(NonTerminatorType.ConstDeclaration, root.GetNonTerminatorType());
+        Assert.Equal(3, root.Children.Count);
+        Assert.Contains(root.Children, node =>
+        {
+            if (node.IsTerminated && node.GetSemanticToken().TokenType == SemanticTokenType.Identifier)
+            {
+                return true;
+            }
+
+            if (!node.IsTerminated && node.GetNonTerminatorType() == NonTerminatorType.ConstValue)
+            {
+                return true;
+            }
+
+            if (node.IsTerminated && node.GetSemanticToken().TokenType == SemanticTokenType.Operator)
+            {
+                OperatorSemanticToken token = (OperatorSemanticToken)node.GetSemanticToken();
+
+                return token.OperatorType == OperatorType.Equal;
+            }
+
+            return false;
+        });
+
+        // ConstValue
+        root = root.Children.Where(child =>
+            !child.IsTerminated && child.GetNonTerminatorType() == NonTerminatorType.ConstValue
+        ).ElementAt(0);
+        Assert.Equal(NonTerminatorType.ConstValue, root.GetNonTerminatorType());
+        Assert.Equal(2, root.Children.Count);
+        Assert.Contains(root.Children, node =>
+        {
+            if (node.IsTerminated && node.GetSemanticToken().TokenType == SemanticTokenType.Operator)
+            {
+                OperatorSemanticToken token = (OperatorSemanticToken)node.GetSemanticToken();
+
+                return token.OperatorType == OperatorType.Plus;
+            }
+
+            if (node.IsTerminated && node.GetSemanticToken().TokenType == SemanticTokenType.Number)
+            {
+                return true;
+            }
+
+            return false;
+        });
+    }
+
+    [Fact]
+    public void AstTestSecond()
+    {
+        GrammarBuilder builder = new()
+        {
+            Generators = s_pascalGrammar, Begin = new NonTerminator(NonTerminatorType.StartNonTerminator)
+        };
+
+        GrammarParserBase grammar = builder.Build().ToGrammarParser();
+
+        // const a = 5; McCafe = 'Under Pressure (Queen & D. Bowie)' ;
+        List<SemanticToken> tokens =
+        [
+            new KeywordSemanticToken
+            {
+                CharacterPos = 0, KeywordType = KeywordType.Const, LinePos = 0, LiteralValue = "const"
+            },
+            new IdentifierSemanticToken { LinePos = 0, CharacterPos = 0, LiteralValue = "a" },
+            new OperatorSemanticToken
+            {
+                LinePos = 0, CharacterPos = 0, LiteralValue = "=", OperatorType = OperatorType.Equal
+            },
+            new NumberSemanticToken
+            {
+                CharacterPos = 0, LinePos = 0, LiteralValue = "5", NumberType = NumberType.Integer
+            },
+            new DelimiterSemanticToken
+            {
+                CharacterPos = 0, DelimiterType = DelimiterType.Semicolon, LinePos = 0, LiteralValue = ";"
+            },
+            new IdentifierSemanticToken { LinePos = 0, CharacterPos = 0, LiteralValue = "McCafe" },
+            new OperatorSemanticToken
+            {
+                LinePos = 0, CharacterPos = 0, LiteralValue = "=", OperatorType = OperatorType.Equal
+            },
+            new DelimiterSemanticToken
+            {
+                CharacterPos = 0, DelimiterType = DelimiterType.SingleQuotation, LinePos = 0, LiteralValue = "'"
+            },
+            new CharacterSemanticToken
+            {
+                CharacterPos = 0, LinePos = 0, LiteralValue = "Under Pressure (Queen & D. Bowie)"
+            },
+            new DelimiterSemanticToken
+            {
+                CharacterPos = 0, DelimiterType = DelimiterType.SingleQuotation, LinePos = 0, LiteralValue = "'"
+            },
+            new DelimiterSemanticToken
+            {
+                CharacterPos = 0, DelimiterType = DelimiterType.Semicolon, LinePos = 0, LiteralValue = ";"
+            },
+            SemanticToken.End
+        ];
+
+        // 分析树见文档
+
+        // ProgramBody
+        SyntaxNode root = grammar.Analyse(tokens);
+        Assert.Equal(NonTerminatorType.ProgramBody, root.GetNonTerminatorType());
+        Assert.Single(root.Children);
+        Assert.Equal(17, root.Count());
+
+        // ConstDeclarations
+        root = root.Children[0];
+        Assert.Equal(NonTerminatorType.ConstDeclarations, root.GetNonTerminatorType());
+        Assert.Equal(3, root.Children.Count);
+
+        Assert.Contains(root.Children, node =>
+        {
+            if (node.IsTerminated && node.GetSemanticToken().TokenType == SemanticTokenType.Keyword)
+            {
+                KeywordSemanticToken token = (KeywordSemanticToken)node.GetSemanticToken();
+
+                return token.KeywordType == KeywordType.Const;
+            }
+
+            if (node.IsTerminated && node.GetSemanticToken().TokenType == SemanticTokenType.Delimiter)
+            {
+                DelimiterSemanticToken token = (DelimiterSemanticToken)node.GetSemanticToken();
+
+                return token.DelimiterType == DelimiterType.Semicolon;
+            }
+
+            if (!node.IsTerminated && node.GetNonTerminatorType() == NonTerminatorType.ConstDeclaration)
+            {
+                return true;
+            }
+
+            return false;
+        });
+
+        // ConstDeclaration layer3
+        root = root.Children.Where(child =>
+            !child.IsTerminated && child.GetNonTerminatorType() == NonTerminatorType.ConstDeclaration
+        ).ElementAt(0);
+
+        Assert.Equal(NonTerminatorType.ConstDeclaration, root.GetNonTerminatorType());
+        Assert.Equal(5, root.Children.Count);
+        Assert.Contains(root.Children, node =>
+        {
+            if (!node.IsTerminated && node.GetNonTerminatorType() == NonTerminatorType.ConstDeclaration)
+            {
+                return true;
+            }
+
+            if (node.IsTerminated && node.GetSemanticToken().TokenType == SemanticTokenType.Delimiter)
+            {
+                DelimiterSemanticToken token = (DelimiterSemanticToken)node.GetSemanticToken();
+
+                return token.DelimiterType == DelimiterType.Semicolon;
+            }
+
+            if (node.IsTerminated && node.GetSemanticToken().TokenType == SemanticTokenType.Identifier)
+            {
+                return true;
+            }
+
+            if (!node.IsTerminated && node.GetNonTerminatorType() == NonTerminatorType.ConstValue)
+            {
+                return true;
+            }
+
+            if (node.IsTerminated && node.GetSemanticToken().TokenType == SemanticTokenType.Operator)
+            {
+                OperatorSemanticToken token = (OperatorSemanticToken)node.GetSemanticToken();
+
+                return token.OperatorType == OperatorType.Equal;
+            }
+
+            return false;
+        });
+
+        // ConstDeclaration layer4
+        SyntaxNode constDeclarationLayer4 = root.Children.Where(child =>
+            !child.IsTerminated && child.GetNonTerminatorType() == NonTerminatorType.ConstDeclaration
+        ).ElementAt(0);
+        Assert.Equal(NonTerminatorType.ConstDeclaration, constDeclarationLayer4.GetNonTerminatorType());
+        Assert.Equal(3, constDeclarationLayer4.Children.Count);
+        Assert.Contains(constDeclarationLayer4.Children, node =>
+        {
+            if (node.IsTerminated && node.GetSemanticToken().TokenType == SemanticTokenType.Identifier)
+            {
+                return true;
+            }
+
+            if (node.IsTerminated && node.GetSemanticToken().TokenType == SemanticTokenType.Operator)
+            {
+                OperatorSemanticToken token = (OperatorSemanticToken)node.GetSemanticToken();
+
+                return token.OperatorType == OperatorType.Equal;
+            }
+
+            if (!node.IsTerminated && node.GetNonTerminatorType() == NonTerminatorType.ConstValue)
+            {
+                return true;
+            }
+
+            return false;
+        });
+
+
+        // ConstValue layer4
+        SyntaxNode constValueLayer4 = root.Children.Where(child =>
+            !child.IsTerminated && child.GetNonTerminatorType() == NonTerminatorType.ConstValue
+        ).ElementAt(0);
+        Assert.Equal(NonTerminatorType.ConstValue, constValueLayer4.GetNonTerminatorType());
+        Assert.Equal(3, constValueLayer4.Children.Count);
+        Assert.Contains(constValueLayer4.Children, node =>
+        {
+            if (node.IsTerminated && node.GetSemanticToken().TokenType == SemanticTokenType.Delimiter)
+            {
+                DelimiterSemanticToken token = (DelimiterSemanticToken)node.GetSemanticToken();
+
+                return token.DelimiterType == DelimiterType.SingleQuotation;
+            }
+
+            if (node.IsTerminated && node.GetSemanticToken().TokenType == SemanticTokenType.Character)
+            {
+                return true;
+            }
+
+            if (node.IsTerminated && node.GetSemanticToken().TokenType == SemanticTokenType.Delimiter)
+            {
+                DelimiterSemanticToken token = (DelimiterSemanticToken)node.GetSemanticToken();
+
+                return token.DelimiterType == DelimiterType.SingleQuotation;
+            }
+
+            return false;
+        });
+
+        // ConstValue layer5
+        SyntaxNode constValueLayer5 = constDeclarationLayer4.Children.Where(child =>
+            !child.IsTerminated && child.GetNonTerminatorType() == NonTerminatorType.ConstValue
+        ).ElementAt(0);
+        Assert.Equal(NonTerminatorType.ConstValue, constValueLayer5.GetNonTerminatorType());
+        Assert.Single(constValueLayer5.Children);
+        Assert.Contains(constValueLayer5.Children, node =>
+        {
+            if (node.IsTerminated && node.GetSemanticToken().TokenType == SemanticTokenType.Number)
+            {
+                return true;
+            }
+
+            return false;
+        });
+    }
+}

Canon.Tests/GrammarParserTests/PascalGrammarTests.Grammar.cs

@@ -0,0 +1,595 @@
+using Canon.Core.Enums;
+using Canon.Core.GrammarParser;
+
+namespace Canon.Tests.GrammarParserTests;
+
+public partial class PascalGrammarTests
+{
+    private static readonly Dictionary<NonTerminator, List<List<TerminatorBase>>> s_pascalGrammar = new()
+    {
+        {
+            // ProgramStart -> ProgramStruct
+            new NonTerminator(NonTerminatorType.StartNonTerminator), [
+                [new NonTerminator(NonTerminatorType.ProgramStruct)]
+            ]
+        },
+        {
+            // ProgramStruct -> ProgramHead ; ProgramBody .
+            new NonTerminator(NonTerminatorType.ProgramStruct), [
+                [
+                    new NonTerminator(NonTerminatorType.ProgramHead),
+                    new Terminator(DelimiterType.Semicolon),
+                    new NonTerminator(NonTerminatorType.ProgramBody),
+                    new Terminator(DelimiterType.Period)
+                ]
+            ]
+        },
+        {
+            // ProgramHead -> program id (IdList) | program id
+            new NonTerminator(NonTerminatorType.ProgramHead), [
+                [
+                    new Terminator(KeywordType.Program),
+                    Terminator.IdentifierTerminator,
+                    new Terminator(DelimiterType.LeftParenthesis),
+                    new NonTerminator(NonTerminatorType.IdentifierList),
+                    new Terminator(DelimiterType.RightParenthesis),
+                ],
+                [
+                    new Terminator(KeywordType.Program),
+                    Terminator.IdentifierTerminator,
+                ]
+            ]
+        },
+        {
+            // ProgramBody -> ConstDeclarations
+            //            VarDeclarations
+            //            SubprogramDeclarations
+            //            CompoundStatement
+            new NonTerminator(NonTerminatorType.ProgramBody), [
+                [
+                    new NonTerminator(NonTerminatorType.ConstDeclarations),
+                    new NonTerminator(NonTerminatorType.VarDeclarations),
+                    new NonTerminator(NonTerminatorType.SubprogramDeclarations),
+                    new NonTerminator(NonTerminatorType.CompoundStatement)
+                ]
+            ]
+        },
+        {
+            // IdList -> id | IdList , id
+            new NonTerminator(NonTerminatorType.IdentifierList), [
+                [
+                    Terminator.IdentifierTerminator,
+                ],
+                [
+                    new NonTerminator(NonTerminatorType.IdentifierList),
+                    new Terminator(DelimiterType.Comma),
+                    Terminator.IdentifierTerminator
+                ]
+            ]
+        },
+        {
+            // ConstDeclarations -> ε | const ConstDeclaration ;
+            new NonTerminator(NonTerminatorType.ConstDeclarations), [
+                [
+                    Terminator.EmptyTerminator,
+                ],
+                [
+                    new Terminator(KeywordType.Const),
+                    new NonTerminator(NonTerminatorType.ConstDeclaration),
+                    new Terminator(DelimiterType.Semicolon)
+                ]
+            ]
+        },
+        {
+            // ConstDeclaration -> id = ConstValue | ConstDeclaration ; id = ConstValue
+            new NonTerminator(NonTerminatorType.ConstDeclaration), [
+                [
+                    Terminator.IdentifierTerminator,
+                    new Terminator(OperatorType.Equal),
+                    new NonTerminator(NonTerminatorType.ConstValue)
+                ],
+                [
+                    new NonTerminator(NonTerminatorType.ConstDeclaration),
+                    new Terminator(DelimiterType.Semicolon),
+                    Terminator.IdentifierTerminator,
+                    new Terminator(OperatorType.Equal),
+                    new NonTerminator(NonTerminatorType.ConstValue)
+                ]
+            ]
+        },
+        {
+            // ConstValue -> +num | -num | num | 'letter'
+            new NonTerminator(NonTerminatorType.ConstValue), [
+                [
+                    new Terminator(OperatorType.Plus), Terminator.NumberTerminator
+                ],
+                [
+                    new Terminator(OperatorType.Minus), Terminator.NumberTerminator,
+                ],
+                [
+                    Terminator.NumberTerminator,
+                ],
+                [
+                    new Terminator(DelimiterType.SingleQuotation),
+                    Terminator.CharacterTerminator,
+                    new Terminator(DelimiterType.SingleQuotation),
+                ]
+            ]
+        },
+        {
+            // VarDeclarations -> ε | var VarDeclaration ;
+            new NonTerminator(NonTerminatorType.VarDeclarations), [
+                [
+                    Terminator.EmptyTerminator
+                ],
+                [
+                    new Terminator(KeywordType.Var),
+                    new NonTerminator(NonTerminatorType.VarDeclaration),
+                    new Terminator(DelimiterType.Semicolon)
+                ]
+            ]
+        },
+        {
+            // VarDeclaration -> IdList : Type | VarDeclaration ; IdList : Type
+            new NonTerminator(NonTerminatorType.VarDeclaration), [
+                [
+                    new NonTerminator(NonTerminatorType.IdentifierList),
+                    new Terminator(DelimiterType.Colon),
+                    new NonTerminator(NonTerminatorType.Type)
+                ],
+                [
+                    new NonTerminator(NonTerminatorType.VarDeclaration),
+                    new Terminator(DelimiterType.Semicolon),
+                    new NonTerminator(NonTerminatorType.IdentifierList),
+                    new Terminator(DelimiterType.Colon),
+                    new NonTerminator(NonTerminatorType.Type)
+                ]
+            ]
+        },
+        {
+            // Type -> BasicType | Array [ Period ] of BasicType
+            new NonTerminator(NonTerminatorType.Type), [
+                [
+                    new NonTerminator(NonTerminatorType.BasicType)
+                ],
+                [
+                    new Terminator(KeywordType.Array),
+                    new Terminator(DelimiterType.LeftSquareBracket),
+                    new NonTerminator(NonTerminatorType.Period),
+                    new Terminator(DelimiterType.RightSquareBracket),
+                    new Terminator(KeywordType.Of),
+                    new NonTerminator(NonTerminatorType.BasicType)
+                ]
+            ]
+        },
+        {
+            // BasicType -> Integer | Real | Boolean | char
+            new NonTerminator(NonTerminatorType.BasicType), [
+                [
+                    new Terminator(KeywordType.Integer)
+                ],
+                [
+                    new Terminator(KeywordType.Real)
+                ],
+                [
+                    new Terminator(KeywordType.Boolean)
+                ],
+                [
+                    new Terminator(KeywordType.Character)
+                ]
+            ]
+        },
+        {
+            // Period -> digits .. digits | Period , digits .. digits
+            new NonTerminator(NonTerminatorType.Period), [
+                [
+                    Terminator.NumberTerminator,
+                    new Terminator(DelimiterType.DoubleDots),
+                    Terminator.NumberTerminator,
+                ],
+                [
+                    new NonTerminator(NonTerminatorType.Period),
+                    new Terminator(DelimiterType.Comma),
+                    Terminator.NumberTerminator,
+                    new Terminator(DelimiterType.DoubleDots),
+                    Terminator.NumberTerminator,
+                ]
+            ]
+        },
+        {
+            // SubprogramDeclarations -> ε | SubprogramDeclarations Subprogram ;
+            new NonTerminator(NonTerminatorType.SubprogramDeclarations), [
+                [
+                    Terminator.EmptyTerminator
+                ],
+                [
+                    new NonTerminator(NonTerminatorType.SubprogramDeclarations),
+                    new NonTerminator(NonTerminatorType.Subprogram),
+                    new Terminator(DelimiterType.Semicolon)
+                ]
+            ]
+        },
+        {
+            // Subprogram -> SubprogramHead ; SubprogramBody
+            new NonTerminator(NonTerminatorType.Subprogram), [
+                [
+                    new NonTerminator(NonTerminatorType.SubprogramHead),
+                    new Terminator(DelimiterType.Semicolon),
+                    new NonTerminator(NonTerminatorType.SubprogramBody)
+                ]
+            ]
+        },
+        {
+            // SubprogramHead -> procedure id FormalParameter
+            //                | function id FormalParameter : BasicType
+            new NonTerminator(NonTerminatorType.SubprogramHead), [
+                [
+                    new Terminator(KeywordType.Procedure),
+                    Terminator.IdentifierTerminator,
+                    new NonTerminator(NonTerminatorType.FormalParameter)
+                ],
+                [
+                    new Terminator(KeywordType.Function),
+                    Terminator.IdentifierTerminator,
+                    new NonTerminator(NonTerminatorType.FormalParameter),
+                    new Terminator(DelimiterType.Colon),
+                    new NonTerminator(NonTerminatorType.BasicType)
+                ]
+            ]
+        },
+        {
+            // FormalParameter -> ε | ( ParameterList )
+            new NonTerminator(NonTerminatorType.FormalParameter), [
+                [
+                    Terminator.EmptyTerminator,
+                ],
+                [
+                    new Terminator(DelimiterType.LeftParenthesis),
+                    new NonTerminator(NonTerminatorType.ParameterList),
+                    new Terminator(DelimiterType.RightParenthesis)
+                ]
+            ]
+        },
+        {
+            // ParameterList -> Parameter | ParameterList ; Parameter
+            new NonTerminator(NonTerminatorType.ParameterList), [
+                [
+                    new NonTerminator(NonTerminatorType.Parameter)
+                ],
+                [
+                    new NonTerminator(NonTerminatorType.ParameterList),
+                    new Terminator(DelimiterType.Semicolon),
+                    new NonTerminator(NonTerminatorType.Parameter)
+                ]
+            ]
+        },
+        {
+            // Parameter -> VarParameter | ValueParameter
+            new NonTerminator(NonTerminatorType.Parameter), [
+                [
+                    new NonTerminator(NonTerminatorType.VarParameter)
+                ],
+                [
+                    new NonTerminator(NonTerminatorType.ValueParameter)
+                ]
+            ]
+        },
+        {
+            // VarParameter -> var ValueParameter
+            new NonTerminator(NonTerminatorType.VarParameter), [
+                [
+                    new Terminator(KeywordType.Var),
+                    new NonTerminator(NonTerminatorType.ValueParameter)
+                ]
+            ]
+        },
+        {
+            // ValueParameter -> IdList : BasicType
+            new NonTerminator(NonTerminatorType.ValueParameter), [
+                [
+                    new NonTerminator(NonTerminatorType.IdentifierList),
+                    new Terminator(DelimiterType.Colon),
+                    new NonTerminator(NonTerminatorType.BasicType)
+                ]
+            ]
+        },
+        {
+            // SubprogramBody -> ConstDeclarations
+            //                   VarDeclarations
+            //                   CompoundStatement
+            new NonTerminator(NonTerminatorType.SubprogramBody), [
+                [
+                    new NonTerminator(NonTerminatorType.ConstDeclarations),
+                    new NonTerminator(NonTerminatorType.VarDeclarations),
+                    new NonTerminator(NonTerminatorType.CompoundStatement)
+                ]
+            ]
+        },
+        {
+            // CompoundStatement -> begin StatementList end
+            new NonTerminator(NonTerminatorType.CompoundStatement), [
+                [
+                    new Terminator(KeywordType.Begin),
+                    new NonTerminator(NonTerminatorType.StatementList),
+                    new Terminator(KeywordType.End)
+                ]
+            ]
+        },
+        {
+            // StatementList -> Statement | StatementList ; Statement
+            new NonTerminator(NonTerminatorType.StatementList), [
+                [
+                    new NonTerminator(NonTerminatorType.Statement)
+                ],
+                [
+                    new NonTerminator(NonTerminatorType.StatementList),
+                    new Terminator(DelimiterType.Semicolon),
+                    new NonTerminator(NonTerminatorType.Statement)
+                ]
+            ]
+        },
+        {
+            // Statement -> ε
+            //           | Variable AssignOp Expression
+            //           | FuncId AssignOp Expression
+            //           | ProcedureCall
+            //           | CompoundStatement
+            //           | if Expression then Statement ElsePart
+            //           | for id AssignOp Expression to Expression do Statement
+            //           | read ( VariableList )
+            //           | write( ExpressionList )
+            // 注意这里 read 和 write 作为普通的函数调用处理了
+            // 因此下面并没有单独声明
+            new NonTerminator(NonTerminatorType.Statement), [
+                [
+                    // ε
+                    Terminator.EmptyTerminator,
+                ],
+                [
+                    // Variable AssignOp Expression
+                    new NonTerminator(NonTerminatorType.Variable),
+                    new Terminator(OperatorType.Assign),
+                    new NonTerminator(NonTerminatorType.Expression)
+                ],
+                [
+                    // FuncId AssignOp Expression
+                    Terminator.IdentifierTerminator,
+                    new Terminator(OperatorType.Assign),
+                    new NonTerminator(NonTerminatorType.Expression)
+                ],
+                [
+                    // ProcedureCall
+                    new NonTerminator(NonTerminatorType.ProcedureCall)
+                ],
+                [
+                    // CompoundStatement
+                    new NonTerminator(NonTerminatorType.CompoundStatement)
+                ],
+                [
+                    // if Expression then Statement ElsePart
+                    new Terminator(KeywordType.If),
+                    new NonTerminator(NonTerminatorType.Expression),
+                    new Terminator(KeywordType.Then),
+                    new NonTerminator(NonTerminatorType.Statement),
+                    new NonTerminator(NonTerminatorType.ElsePart)
+                ],
+                [
+                    // for id AssignOp Expression to Expression do Statement
+                    new Terminator(KeywordType.For),
+                    Terminator.IdentifierTerminator,
+                    new Terminator(OperatorType.Assign),
+                    new NonTerminator(NonTerminatorType.Expression),
+                    new Terminator(KeywordType.To),
+                    new NonTerminator(NonTerminatorType.Expression),
+                    new Terminator(KeywordType.Do),
+                    new NonTerminator(NonTerminatorType.Statement)
+                ]
+            ]
+        },
+        // {
+        //     // VariableList -> Variable | VariableList , Variable
+        //     // 这里用expressionList代替VariableList
+        //     new NonTerminator(NonTerminatorType.ExpressionList), [
+        //         [
+        //             new NonTerminator(NonTerminatorType.Variable)
+        //         ],
+        //         [
+        //             new NonTerminator(NonTerminatorType.ExpressionList),
+        //             new Terminator(DelimiterType.Comma),
+        //             new NonTerminator(NonTerminatorType.Variable)
+        //         ]
+        //     ]
+        // },
+        {
+            // Variable -> id IdVarPart
+            new NonTerminator(NonTerminatorType.Variable), [
+                [
+                    Terminator.IdentifierTerminator,
+                    new NonTerminator(NonTerminatorType.IdVarPart)
+                ]
+            ]
+        },
+        {
+            // IdVarPart -> ε | [ ExpressionList ]
+            new NonTerminator(NonTerminatorType.IdVarPart), [
+                [
+                    Terminator.EmptyTerminator,
+                ],
+                [
+                    new Terminator(DelimiterType.LeftSquareBracket),
+                    new NonTerminator(NonTerminatorType.ExpressionList),
+                    new Terminator(DelimiterType.RightSquareBracket)
+                ]
+            ]
+        },
+        {
+            // ProcedureCall -> id | id ( ExpressionList )
+            new NonTerminator(NonTerminatorType.ProcedureCall), [
+                [
+                    Terminator.IdentifierTerminator,
+                ],
+                [
+                    Terminator.IdentifierTerminator,
+                    new Terminator(DelimiterType.LeftParenthesis),
+                    new NonTerminator(NonTerminatorType.ExpressionList),
+                    new Terminator(DelimiterType.RightParenthesis)
+                ]
+            ]
+        },
+        {
+            // ElsePart -> ε | else statement
+            new NonTerminator(NonTerminatorType.ElsePart), [
+                [
+                    Terminator.EmptyTerminator,
+                ],
+                [
+                    new Terminator(KeywordType.Else),
+                    new NonTerminator(NonTerminatorType.Statement)
+                ]
+            ]
+        },
+        {
+            // ExpressionList -> Expression | ExpressionList , Expression
+            new NonTerminator(NonTerminatorType.ExpressionList), [
+                [
+                    new NonTerminator(NonTerminatorType.Expression)
+                ],
+                [
+                    new NonTerminator(NonTerminatorType.ExpressionList),
+                    new Terminator(DelimiterType.Comma),
+                    new NonTerminator(NonTerminatorType.Expression)
+                ]
+            ]
+        },
+        {
+            // Expression -> SimpleExpression | SimpleExpression RelationOperator SimpleExpression
+            new NonTerminator(NonTerminatorType.Expression), [
+                [
+                    new NonTerminator(NonTerminatorType.SimpleExpression)
+                ],
+                [
+                    new NonTerminator(NonTerminatorType.SimpleExpression),
+                    new NonTerminator(NonTerminatorType.RelationOperator),
+                    new NonTerminator(NonTerminatorType.SimpleExpression)
+                ]
+            ]
+        },
+        {
+            // SimpleExpression -> Term | SimpleExpression AddOperator Term
+            new NonTerminator(NonTerminatorType.SimpleExpression), [
+                [
+                    new NonTerminator(NonTerminatorType.Term)
+                ],
+                [
+                    new NonTerminator(NonTerminatorType.SimpleExpression),
+                    new NonTerminator(NonTerminatorType.AddOperator),
+                    new NonTerminator(NonTerminatorType.Term)
+                ]
+            ]
+        },
+        {
+            // Term -> Factor | Term MultiplyOperator Factor
+            new NonTerminator(NonTerminatorType.Term), [
+                [
+                    new NonTerminator(NonTerminatorType.Factor)
+                ],
+                [
+                    new NonTerminator(NonTerminatorType.Term),
+                    new NonTerminator(NonTerminatorType.MultiplyOperator),
+                    new NonTerminator(NonTerminatorType.Factor)
+                ]
+            ]
+        },
+        {
+            // Factor -> num | Variable
+            //         | ( Expression )
+            //         | id ( ExpressionList )
+            //         | not Factor
+            //         | minus Factor
+            new NonTerminator(NonTerminatorType.Factor), [
+                [
+                    Terminator.NumberTerminator,
+                ],
+                [
+                    new NonTerminator(NonTerminatorType.Variable)
+                ],
+                [
+                    new Terminator(DelimiterType.LeftParenthesis),
+                    new NonTerminator(NonTerminatorType.Expression),
+                    new Terminator(DelimiterType.RightParenthesis)
+                ],
+                [
+                    Terminator.IdentifierTerminator,
+                    new Terminator(DelimiterType.LeftParenthesis),
+                    new NonTerminator(NonTerminatorType.ExpressionList),
+                    new Terminator(DelimiterType.RightParenthesis)
+                ],
+                [
+                    new Terminator(KeywordType.Not),
+                    new NonTerminator(NonTerminatorType.Factor)
+                ],
+                [
+                    new Terminator(OperatorType.Minus),
+                    new NonTerminator(NonTerminatorType.Factor)
+                ]
+            ]
+        },
+        {
+            // AddOperator -> + | - | or
+            new NonTerminator(NonTerminatorType.AddOperator), [
+                [
+                    new Terminator(OperatorType.Plus)
+                ],
+                [
+                    new Terminator(OperatorType.Minus)
+                ],
+                [
+                    new Terminator(KeywordType.Or)
+                ]
+            ]
+        },
+        {
+            // MultiplyOperator -> * | / | div | mod | and
+            new NonTerminator(NonTerminatorType.MultiplyOperator), [
+                [
+                    new Terminator(OperatorType.Multiply),
+                ],
+                [
+                    new Terminator(OperatorType.Divide),
+                ],
+                [
+                    new Terminator(KeywordType.Divide)
+                ],
+                [
+                    new Terminator(KeywordType.Mod)
+                ],
+                [
+                    new Terminator(KeywordType.And)
+                ]
+            ]
+        },
+        {
+            // RelationOperator -> = | <> | < | <= | > | >=
+            new NonTerminator(NonTerminatorType.RelationOperator), [
+                [
+                    new Terminator(OperatorType.Equal)
+                ],
+                [
+                    new Terminator(OperatorType.NotEqual)
+                ],
+                [
+                    new Terminator(OperatorType.Less)
+                ],
+                [
+                    new Terminator(OperatorType.LessEqual)
+                ],
+                [
+                    new Terminator(OperatorType.Greater)
+                ],
+                [
+                    new Terminator(OperatorType.GreaterEqual)
+                ]
+            ]
+        }
+    };
+}

Canon.Tests/GrammarParserTests/PascalGrammarTests.cs

@@ -0,0 +1,27 @@
+using Canon.Core.Abstractions;
+using Canon.Core.Enums;
+using Canon.Core.GrammarParser;
+
+namespace Canon.Tests.GrammarParserTests;
+
+public partial class PascalGrammarTests
+{
+    private readonly GrammarBuilder _builder = new()
+    {
+        Generators = s_pascalGrammar, Begin = new NonTerminator(NonTerminatorType.StartNonTerminator)
+    };
+
+    private readonly GrammarParserBase _parser;
+
+    public PascalGrammarTests()
+    {
+        Grammar grammar = _builder.Build();
+        _parser = grammar.ToGrammarParser();
+    }
+
+    [Fact]
+    public void GrammarTest()
+    {
+        Assert.NotNull(_parser);
+    }
+}

Canon.Tests/GrammarParserTests/SimpleGrammarWithEmptyTests.cs

@@ -18,7 +18,6 @@ public class SimpleGrammarWithEmptyTests(ITestOutputHelper testOutputHelper)
     /// B ProgramBody
     /// a Identifier
     /// </summary>
-    // private readonly ITestOutputHelper _testOutputHelper;
 
     private readonly ITestOutputHelper _testOutputHelper = testOutputHelper;
 

Canon.Tests/LexicalParserTests/OperatorTypeTests.cs

@@ -6,45 +6,36 @@ namespace Canon.Tests.LexicalParserTests;
 public class OperatorTypeTests
 {
     [Theory]
-    [InlineData("+ 123", OperatorType.Plus, 0u, 0u, true)]
+    [InlineData("+ 123", OperatorType.Plus)]
-    [InlineData("1 + 123", OperatorType.Plus, 0u, 2u, true)]
+    [InlineData("1 + 123", OperatorType.Plus)]
-    [InlineData("+123", OperatorType.Plus, 0u, 0u, true)]
+    [InlineData("+123", OperatorType.Plus)]
-    [InlineData("m +123", OperatorType.Plus, 0u, 2u, true)]
+    [InlineData("m +123", OperatorType.Plus)]
-    [InlineData("-123", OperatorType.Minus, 0u, 0u, true)]
+    [InlineData("-123", OperatorType.Minus)]
-    [InlineData("*123", OperatorType.Multiply, 0u, 0u, true)]
+    [InlineData("*123", OperatorType.Multiply)]
-    [InlineData("/123", OperatorType.Divide, 0u, 0u, true)]
+    [InlineData("/123", OperatorType.Divide)]
-    [InlineData("=123", OperatorType.Equal, 0u, 0u, true)]
+    [InlineData("=123", OperatorType.Equal)]
-    [InlineData("<123", OperatorType.Less, 0u, 0u, true)]
+    [InlineData("<123", OperatorType.Less)]
-    [InlineData(">123", OperatorType.Greater, 0u, 0u, true)]
+    [InlineData(">123", OperatorType.Greater)]
-    [InlineData("<=123", OperatorType.LessEqual, 0u, 0u, true)]
+    [InlineData("<=123", OperatorType.LessEqual)]
-    [InlineData(">=123", OperatorType.GreaterEqual, 0u, 0u, true)]
+    [InlineData(">=123", OperatorType.GreaterEqual)]
-    [InlineData("<>123", OperatorType.NotEqual, 0u, 0u, true)]
+    [InlineData("<>123", OperatorType.NotEqual)]
-    [InlineData(":=123", OperatorType.Assign, 0u, 0u, true)]
+    [InlineData(":=123", OperatorType.Assign)]
-    [InlineData("and 123", OperatorType.And, 0u, 0u, true)]
+    public void ParseTest(string input, OperatorType result)
-    [InlineData("or123", OperatorType.Or, 0u, 0u, true)]
-    [InlineData("mod123", OperatorType.Mod, 0u, 0u, true)]
-
-    [InlineData("and123", OperatorType.And, 0u, 0u, false)]
-    [InlineData("andasd", OperatorType.And, 0u, 0u, false)]
-    [InlineData("andand", OperatorType.And, 0u, 0u, false)]
-    [InlineData("<><123", OperatorType.NotEqual, 0u, 0u, false)]
-    [InlineData("<><123", OperatorType.Less, 0u, 0u, false)]
-    [InlineData("<=<123", OperatorType.LessEqual, 0u, 0u, false)]
-    public void SmokeTest(string input, OperatorType type, uint expectedLinePos, uint expectedCharacterPos, bool expectedResult)
     {
         LinkedList<char> content = Utils.GetLinkedList(input);
-        Assert.Equal(expectedResult, OperatorSemanticToken.TryParse(expectedLinePos, expectedCharacterPos, content.First!,
+        Assert.True(OperatorSemanticToken.TryParse(0, 0,
-            out OperatorSemanticToken? token));
+            content.First!, out OperatorSemanticToken? token));
-        if (expectedResult)
+        Assert.Equal(result, token?.OperatorType);
-        {
-            Assert.NotNull(token);
-            Assert.Equal(type, token.OperatorType);
-            Assert.Equal(expectedLinePos, token.LinePos);
-            Assert.Equal(expectedCharacterPos, token.CharacterPos);
     }
-        else
+
+    [Theory]
+    [InlineData("<><123")]
+    [InlineData("<=<123")]
+    public void ParseFailedTest(string input)
     {
+        LinkedList<char> content = Utils.GetLinkedList(input);
+        Assert.False(OperatorSemanticToken.TryParse(0, 0,
+            content.First!, out OperatorSemanticToken? token));
         Assert.Null(token);
     }
-    }
 }