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SLR1Tests.cs
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SLR1Tests.cs
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using System.Collections.Generic;
using Xunit;
using Xunit.Abstractions;
using CNFDotnet.Analysis.Grammar;
using CNFDotnet.Analysis.Parsing;
using CNFDotnet.Analysis.Parsing.LR;
using CNFDotnet.Analysis.Parsing.LR.SLR1;
namespace CNFDotnet.Tests
{
public class SLR1Tests : BaseParsingTests
{
public static IEnumerable<object[]> SLR1Grammars =>
new object[][]
{
new object[]
{
@"A -> A b | c",
new LR1GenericParsingTable<LR0KernelItem>
(
("0", "A", "s1"),
("0", "c", "s2"),
("1", "b", "s3"),
("1", "$", "a"),
("2", "$", "r1"),
("2", "b", "r1"),
("3", "$", "r0"),
("3", "b", "r0")
)
},
new object[]
{
@"EXP -> EXP add TERM | TERM
TERM -> id | id INDEX | let STMTS in EXP end
STMTS -> STMTS STMT | ε
STMT -> LEXP assign EXP semi
LEXP -> LEXP INDEX | id
INDEX -> lpar EXP rpar",
new LR1GenericParsingTable<LR0KernelItem>
(
("0", "EXP", "s1"),
("0", "TERM", "s2"),
("0", "id", "s3"),
("0", "let", "s4"),
("1", "add", "s5"),
("1", "$", "a"),
("2", "$", "r1"),
("2", "add", "r1"),
("2", "end", "r1"),
("2", "semi", "r1"),
("2", "rpar", "r1"),
("3", "INDEX", "s6"),
("3", "lpar", "s7"),
("3", "$", "r2"),
("3", "add", "r2"),
("3", "end", "r2"),
("3", "semi", "r2"),
("3", "rpar", "r2"),
("4", "STMTS", "s8"),
("4", "in", "r6"),
("4", "id", "r6"),
("5", "TERM", "s9"),
("5", "id", "s3"),
("5", "let", "s4"),
("6", "$", "r3"),
("6", "add", "r3"),
("6", "end", "r3"),
("6", "semi", "r3"),
("6", "rpar", "r3"),
("7", "EXP", "s10"),
("7", "TERM", "s2"),
("7", "id", "s3"),
("7", "let", "s4"),
("8", "in", "s11"),
("8", "STMT", "s12"),
("8", "LEXP", "s13"),
("8", "id", "s14"),
("9", "$", "r0"),
("9", "add", "r0"),
("9", "end", "r0"),
("9", "semi", "r0"),
("9", "rpar", "r0"),
("10", "rpar", "s15"),
("10", "add", "s5"),
("11", "EXP", "s16"),
("11", "TERM", "s2"),
("11", "id", "s3"),
("11", "let", "s4"),
("12", "in", "r5"),
("12", "id", "r5"),
("13", "assign", "s17"),
("13", "INDEX", "s18"),
("13", "lpar", "s7"),
("14", "assign", "r9"),
("14", "lpar", "r9"),
("15", "assign", "r10"),
("15", "lpar", "r10"),
("15", "$", "r10"),
("15", "add", "r10"),
("15", "end", "r10"),
("15", "semi", "r10"),
("15", "rpar", "r10"),
("16", "end", "s19"),
("16", "add", "s5"),
("17", "EXP", "s20"),
("17", "TERM", "s2"),
("17", "id", "s3"),
("17", "let", "s4"),
("18", "assign", "r8"),
("18", "lpar", "r8"),
("19", "$", "r4"),
("19", "add", "r4"),
("19", "end", "r4"),
("19", "semi", "r4"),
("19", "rpar", "r4"),
("20", "semi", "s21"),
("20", "add", "s5"),
("21", "in", "r7"),
("21", "id", "r7")
)
},
new object[]
{
@"S -> E
E -> B + T | B * T | T
B -> C
C -> D
D -> E
T -> X
X -> ε",
new LR1GenericParsingTable<LR0KernelItem>
(
("0", "S", "s1"),
("0", "E", "s2"),
("0", "B", "s3"),
("0", "T", "s4"),
("0", "C", "s5"),
("0", "X", "s6"),
("0", "D", "s7"),
("0", "$", "r8"),
("0", "+", "r8"),
("0", "*", "r8"),
("1", "$", "a"),
("2", "$", "r0"),
("2", "+", "r6"),
("2", "*", "r6"),
("3", "+", "s8"),
("3", "*", "s9"),
("4", "$", "r3"),
("4", "+", "r3"),
("4", "*", "r3"),
("5", "+", "r4"),
("5", "*", "r4"),
("6", "$", "r7"),
("6", "+", "r7"),
("6", "*", "r7"),
("7", "+", "r5"),
("7", "*", "r5"),
("8", "T", "s10"),
("8", "X", "s6"),
("8", "$", "r8"),
("8", "+", "r8"),
("8", "*", "r8"),
("9", "T", "s11"),
("9", "X", "s6"),
("9", "$", "r8"),
("9", "+", "r8"),
("9", "*", "r8"),
("10", "$", "r1"),
("10", "+", "r1"),
("10", "*", "r1"),
("11", "$", "r2"),
("11", "+", "r2"),
("11", "*", "r2")
)
},
new object[]
{
@"A -> a B | a A C | ε
B -> d B | e
C -> c A",
new LR1GenericParsingTable<LR0KernelItem>
(
("0", "A", "s1"),
("0", "a", "s2"),
("0", "$", "r2"),
("0", "c", "r2"),
("1", "$", "a"),
("2", "B", "s3"),
("2", "A", "s4"),
("2", "d", "s5"),
("2", "e", "s6"),
("2", "a", "s2"),
("2", "$", "r2"),
("2", "c", "r2"),
("3", "$", "r0"),
("3", "c", "r0"),
("4", "C", "s7"),
("4", "c", "s8"),
("5", "B", "s9"),
("5", "d", "s5"),
("5", "e", "s6"),
("6", "$", "r4"),
("6", "c", "r4"),
("7", "$", "r1"),
("7", "c", "r1"),
("8", "A", "s10"),
("8", "a", "s2"),
("8", "$", "r2"),
("8", "c", "r2"),
("9", "$", "r3"),
("9", "c", "r3"),
("10", "$", "r5"),
("10", "c", "r5")
)
},
new object[]
{
@"TERM -> id | id INDEX | let LEXP
LEXP -> INDEX LEXP | id
INDEX -> lpar TERM rpar",
new LR1GenericParsingTable<LR0KernelItem>
(
("0", "TERM", "s1"),
("0", "id", "s2"),
("0", "let", "s3"),
("1", "$", "a"),
("2", "INDEX", "s4"),
("2", "lpar", "s5"),
("2", "$", "r0"),
("2", "rpar", "r0"),
("3", "LEXP", "s6"),
("3", "INDEX", "s7"),
("3", "id", "s8"),
("3", "lpar", "s5"),
("4", "$", "r1"),
("4", "rpar", "r1"),
("5", "TERM", "s9"),
("5", "id", "s2"),
("5", "let", "s3"),
("6", "$", "r2"),
("6", "rpar", "r2"),
("7", "LEXP", "s10"),
("7", "INDEX", "s7"),
("7", "id", "s8"),
("7", "lpar", "s5"),
("8", "$", "r4"),
("8", "rpar", "r4"),
("9", "rpar", "s11"),
("10", "$", "r3"),
("10", "rpar", "r3"),
("11", "id", "r5"),
("11", "lpar", "r5"),
("11", "$", "r5"),
("11", "rpar", "r5")
)
},
new object[]
{
@"Line -> Op | Label
Op -> Inst Operands
Label -> id :
Operands -> Src Src Dest
Dest -> id | reg | ( Src )
Src -> Dest | num
Inst -> pneumonic | Macro
Macro -> id",
new LR1GenericParsingTable<LR0KernelItem>
(
("0", "Line", "s1"),
("0", "Op", "s2"),
("0", "Label", "s3"),
("0", "Inst", "s4"),
("0", "id", "s5"),
("0", "pneumonic", "s6"),
("0", "Macro", "s7"),
("1", "$", "a"),
("2", "$", "r0"),
("3", "$", "r1"),
("4", "Operands", "s8"),
("4", "Src", "s9"),
("4", "Dest", "s10"),
("4", "num", "s11"),
("4", "id", "s12"),
("4", "reg", "s13"),
("4", "(", "s14"),
("5", ":", "s15"),
("5", "num", "r12"),
("5", "id", "r12"),
("5", "reg", "r12"),
("5", "(", "r12"),
("6", "num", "r10"),
("6", "id", "r10"),
("6", "reg", "r10"),
("6", "(", "r10"),
("7", "num", "r11"),
("7", "id", "r11"),
("7", "reg", "r11"),
("7", "(", "r11"),
("8", "$", "r2"),
("9", "Src", "s16"),
("9", "Dest", "s10"),
("9", "num", "s11"),
("9", "id", "s12"),
("9", "reg", "s13"),
("9", "(", "s14"),
("10", "num", "r8"),
("10", "id", "r8"),
("10", "reg", "r8"),
("10", "(", "r8"),
("10", ")", "r8"),
("11", "num", "r9"),
("11", "id", "r9"),
("11", "reg", "r9"),
("11", "(", "r9"),
("11", ")", "r9"),
("12", "num", "r5"),
("12", "id", "r5"),
("12", "reg", "r5"),
("12", "(", "r5"),
("12", ")", "r5"),
("12", "$", "r5"),
("13", "num", "r6"),
("13", "id", "r6"),
("13", "reg", "r6"),
("13", "(", "r6"),
("13", ")", "r6"),
("13", "$", "r6"),
("14", "Src", "s17"),
("14", "Dest", "s10"),
("14", "num", "s11"),
("14", "id", "s12"),
("14", "reg", "s13"),
("14", "(", "s14"),
("15", "$", "r3"),
("16", "Dest", "s18"),
("16", "id", "s12"),
("16", "reg", "s13"),
("16", "(", "s14"),
("17", ")", "s19"),
("18", "$", "r4"),
("19", "num", "r7"),
("19", "id", "r7"),
("19", "reg", "r7"),
("19", "(", "r7"),
("19", ")", "r7"),
("19", "$", "r7")
)
}
};
public SLR1Tests(ITestOutputHelper testOutputHelper)
: base(testOutputHelper)
{ }
#pragma warning disable CA1707
[Theory]
[MemberData(nameof(SLR1Tests.SLR1Grammars))]
public void SLR1_Valid_Grammar
(string grammar, LR1GenericParsingTable<LR0KernelItem> verification)
{
CNFGrammar cnfGrammar = this.GenerateGrammar(grammar);
IParsing<SLR1Action> slr1Parsing
= BaseParsingTests.CreateSLR1Parsing(cnfGrammar);
slr1Parsing.Classify();
IParsingTable<SLR1Action> slr1ParsingTable
= slr1Parsing.CreateParsingTable();
Assert.NotNull(slr1ParsingTable);
this.TestOutputHelper.WriteLine("Verifying parsing table");
verification.Verify(cnfGrammar, slr1ParsingTable);
}
#pragma warning restore CA1707
}
}