public void SetMethodTwice()
{
Reduction r = new Reduction("return 42;");
MethodInfo m = typeof(TestReduction).GetMethod("SetMethodTwice");
r.SetCompiledMethod(m);
r.SetCompiledMethod(m);
}
public void AddAssembly()
{
ReductionCompiler comp = new ReductionCompiler();
Reduction r = new Reduction("return new Earley.ReductionCompiler();");
comp.Add(r);
comp.AddReference(typeof(ReductionCompiler).Assembly);
comp.Compile();
Assert.AreEqual(typeof(ReductionCompiler), r.Apply(new object[] {}).GetType());
}
public Parser(Reduction startProduction)
{
if (startProduction == null) throw new ArgumentNullException();
if (startProduction.Symbols.Count == 0 ||
startProduction.Symbols[startProduction.Symbols.Count - 1] != Terminal.Eof)
{
throw new ArgumentException();
}
this.startProduction = startProduction;
}
public void Trival()
{
ReductionCompiler comp = new ReductionCompiler();
Reduction r = new Reduction("return 42;");
comp.Add(r);
comp.Compile();
Assert.AreEqual(42, r.Apply(null));
}
public void TrivalReduce()
{
Reduction reduction = new Reduction("return 42;");
ReductionCompiler comp = new ReductionCompiler();
comp.Add(reduction);
comp.Compile();
Item item = new Item(reduction, new State());
IList<object> results = item.Reduce();
Assert.AreEqual(1, results.Count);
Assert.AreEqual(42, results[0]);
}
public void ReduceTerminals()
{
Reduction r = new Reduction(
"return string.Format(\"{0}{1}{2}\", (char)(int)$0, (char)(int)$1, (char)(int)$2);",
new Terminal('f', 'b'),
new Terminal('o'),
new Terminal('o'));
ReductionCompiler comp = new ReductionCompiler();
comp.Add(r);
comp.Compile();
Item item = new Item(r, new State());
item = item.NextItem;
item.Add('f');
item.Add('b');
item = item.NextItem;
item.Add('o');
item = item.NextItem;
item.Add('o');
IList<object> results = item.Reduce();
Assert.AreEqual(2, results.Count);
Assert.AreEqual("foo", results[0]);
Assert.AreEqual("boo", results[1]);
}
public void ReduceBeforeEnd()
{
Reduction r = new Reduction("return \"hello\";", Terminal.Eof);
ReductionCompiler comp = new ReductionCompiler();
comp.Add(r);
comp.Compile();
new Item(r, new State()).Reduce();
}
public void Reduce()
{
Reduction n1 = new Reduction("return 1;");
Reduction n2 = new Reduction("return 2;");
Reduction n10 = new Reduction("return 10;");
Nonterminal exp = new Nonterminal();
Reduction plus = new Reduction("return (int)$0 + (int)$1;", exp, exp);
exp.Add(n1);
exp.Add(n2);
exp.Add(n10);
exp.Add(plus);
ReductionCompiler comp = new ReductionCompiler();
comp.Add(n1);
comp.Add(n2);
comp.Add(n10);
comp.Add(plus);
comp.Compile();
// +
// / \
// + \
// / \ \
// ? 1 ?
// / \ / \
// 1 2 + 10
// / \
// ? 1
// / \
// 1 2
Item inner = new Item(plus, new State());
inner = inner.NextItem;
inner.Add(new Item(n1, new State()));
inner.Add(new Item(n2, new State()));
inner = inner.NextItem;
inner.Add(new Item(n1, new State()));
Item item = new Item(plus, new State());
item = item.NextItem;
item.Add(inner);
item = item.NextItem;
item.Add(inner);
item.Add(new Item(n10, new State()));
IList<object> result = item.Reduce();
int[] precomputed = new int[] {
4, 5, 12, 5, 6, 13
};
Assert.AreEqual(precomputed.Length, result.Count);
for (int i = 0; i < precomputed.Length; i++)
{
Assert.AreEqual(precomputed[i], result[i]);
}
}
public void SetNullCompiledMethod()
{
Reduction r = new Reduction("return \"hi\";");
r.SetCompiledMethod(null);
}
public void SetCompiledMethod()
{
Reduction r = new Reduction("return \"hi\";");
r.SetCompiledMethod(typeof(TestReduction).GetMethod("MyMethod", BindingFlags.Static | BindingFlags.Public));
Assert.AreEqual("there", r.Apply(null));
}
public void CreateNullCode()
{
Production p = new Reduction(
null,
new Terminal('x'));
}
public void Create()
{
Production p = new Reduction(
"return 42;",
new Terminal('x'));
}
public void ApplyNotCompiled()
{
Reduction r = new Reduction("return 42;");
r.Apply(null);
}