public void PriorityUnion() { Func <FeatureStruct, FeatureStruct, FeatureStruct> resultsSelector = (fs1, fs2) => { fs1.PriorityUnion(fs2); return(fs1); }; Func <FeatureStruct, FeatureStruct, VariableBindings, FeatureStruct> varResultsSelector = (fs1, fs2, varBindings) => { fs1.PriorityUnion(fs2, varBindings); return(fs1); }; TestBinaryOperation(FreezableEqualityComparer <FeatureStruct> .Default, resultsSelector, varResultsSelector, // simple featSys => FeatureStruct.New(featSys).Symbol("a2").Symbol("b1").Symbol("c2").Value, featSys => FeatureStruct.New(featSys).Symbol("a2").Symbol("b1").Symbol("c2").Value, // complex featSys => FeatureStruct.New(featSys).Feature("cx1").EqualTo(cx1 => cx1.Symbol("a2")) .Feature("cx2").EqualTo(cx2 => cx2.Symbol("b1")) .Feature("cx3").EqualTo(cx2 => cx2.Symbol("c2")) .Feature("cx4").EqualTo(cx4 => cx4.Symbol("d2", "d3")).Value, featSys => FeatureStruct.New(featSys).Feature("cx1").EqualTo(cx1 => cx1.Symbol("a2")) .Feature("cx2").EqualTo(cx2 => cx2.Symbol("b1")) .Feature("cx3").EqualTo(cx2 => cx2.Symbol("c2")) .Feature("cx4").EqualTo(cx4 => cx4.Symbol("d1", "d2")).Value, // re-entrant featSys => FeatureStruct.New(featSys).Feature("cx1").EqualTo(1, cx1 => cx1.Symbol("a2")) .Feature("cx2").ReferringTo(1).Value, featSys => FeatureStruct.New(featSys).Feature("cx2").EqualTo(1, cx2 => cx2.Symbol("a1", "a3")) .Feature("cx1").ReferringTo(1).Value, featSys => FeatureStruct.New(featSys).Feature("cx2").EqualTo(cx2 => cx2.Symbol(1, "a1", "a3")) .Feature("cx1").EqualTo(cx1 => cx1.Feature("a").ReferringTo(1)).Value, featSys => FeatureStruct.New(featSys).Feature("cx1").EqualTo(1, cx1 => cx1.Symbol("a1", "a2")) .Feature("cx2").ReferringTo(1).Value, featSys => FeatureStruct.New(featSys).Feature("cx1").EqualTo(1, cx1 => cx1.Symbol("a2", "a3", "a4")) .Feature("cx2").ReferringTo(1).Value, featSys => FeatureStruct.New(featSys).Feature("cx2").EqualTo(cx2 => cx2.Symbol(1, "a2", "a3", "a4")) .Feature("cx1").EqualTo(cx1 => cx1.Feature("a").ReferringTo(1)).Value, featSys => FeatureStruct.New(featSys).Feature("cx2").EqualTo(1, cx2 => cx2.Symbol("a3")) .Feature("cx1").ReferringTo(1).Value, featSys => FeatureStruct.New(featSys).Feature("cx2").EqualTo(1, cx2 => cx2.Symbol("a2", "a3", "a4")) .Feature("cx1").ReferringTo(1).Value, // cyclic featSys => FeatureStruct.New(featSys).Feature("cx1").EqualTo(1, cx1 => cx1 .Symbol("a2").Symbol("b1").Feature("cx2").ReferringTo(1)).Value, featSys => FeatureStruct.New(featSys).Feature("cx1").EqualTo(1, cx1 => cx1 .Symbol("a2").Symbol("b2").Feature("cx2").ReferringTo(1)).Value, // fs1 is not re-entrant and fs2 is re-entrant on cx2, so fs2 wins out and replaces fs1's value for cx2 featSys => FeatureStruct.New(featSys).Feature("cx1").EqualTo(1, cx1 => cx1 .Symbol("a2").Symbol("b1").Feature("cx2").ReferringTo(1)).Value, featSys => FeatureStruct.New(featSys).Feature("cx1").EqualTo(1, cx1 => cx1 .Symbol("a2").Symbol("b1").Symbol("c2").Feature("cx2").ReferringTo(1)).Value, featSys => FeatureStruct.New(featSys).Feature("cx1").EqualTo(1, cx1 => cx1 .Symbol("a2").Symbol("b1").Symbol("c2").Feature("cx2").ReferringTo(1)).Value, // variable featSys => FeatureStruct.New(featSys).Feature("a").Not.EqualToVariable("var1").Symbol("b-").Value, featSys => FeatureStruct.New(featSys).Symbol("a+").Symbol("b-").Value, featSys => FeatureStruct.New(featSys).Feature("a").Not.EqualToVariable("var1").Symbol("b-").Value, featSys => FeatureStruct.New(featSys).Symbol("a+").Symbol("b-").Value, featSys => FeatureStruct.New(featSys).Symbol("a-").Symbol("b-").Value); }
private void TestBinaryOperation <TResult>(IEqualityComparer <TResult> comparer, Func <FeatureStruct, FeatureStruct, TResult> resultsSelector, Func <FeatureStruct, FeatureStruct, VariableBindings, TResult> varResultsSelector, params Func <FeatureSystem, TResult>[] expectedSelectors) { // simple var featSys = new FeatureSystem { new SymbolicFeature("a", new FeatureSymbol("a1"), new FeatureSymbol("a2"), new FeatureSymbol("a3")), new SymbolicFeature("b", new FeatureSymbol("b1"), new FeatureSymbol("b2"), new FeatureSymbol("b3")), new SymbolicFeature("c", new FeatureSymbol("c1"), new FeatureSymbol("c2"), new FeatureSymbol("c3")) }; featSys.Freeze(); FeatureStruct fs1 = FeatureStruct.NewMutable(featSys).Symbol("a1").Symbol("b1").Value; FeatureStruct fs2 = FeatureStruct.NewMutable(featSys).Symbol("a2").Symbol("c2").Value; Assert.That(resultsSelector(fs1, fs2), Is.EqualTo(expectedSelectors[0](featSys)).Using(comparer)); fs1 = FeatureStruct.NewMutable(featSys).Symbol("a1", "a2").Symbol("b1").Symbol("c2").Value; fs2 = FeatureStruct.NewMutable(featSys).Symbol("a2").Symbol("c2").Value; Assert.That(resultsSelector(fs1, fs2), Is.EqualTo(expectedSelectors[1](featSys)).Using(comparer)); // complex featSys = new FeatureSystem { new ComplexFeature("cx1"), new SymbolicFeature("a", new FeatureSymbol("a1"), new FeatureSymbol("a2"), new FeatureSymbol("a3")), new ComplexFeature("cx2"), new SymbolicFeature("b", new FeatureSymbol("b1"), new FeatureSymbol("b2"), new FeatureSymbol("b3")), new ComplexFeature("cx3"), new SymbolicFeature("c", new FeatureSymbol("c1"), new FeatureSymbol("c2"), new FeatureSymbol("c3")), new ComplexFeature("cx4"), new SymbolicFeature("d", new FeatureSymbol("d1"), new FeatureSymbol("d2"), new FeatureSymbol("d3")) }; featSys.Freeze(); fs1 = FeatureStruct.NewMutable(featSys).Feature("cx1").EqualTo(cx1 => cx1.Symbol("a1")) .Feature("cx2").EqualTo(cx2 => cx2.Symbol("b1")) .Feature("cx4").EqualTo(cx4 => cx4.Symbol("d1")).Value; fs2 = FeatureStruct.NewMutable(featSys).Feature("cx1").EqualTo(cx1 => cx1.Symbol("a2")) .Feature("cx3").EqualTo(cx2 => cx2.Symbol("c2")) .Feature("cx4").EqualTo(cx4 => cx4.Symbol("d2", "d3")).Value; Assert.That(resultsSelector(fs1, fs2), Is.EqualTo(expectedSelectors[2](featSys)).Using(comparer)); fs1 = FeatureStruct.NewMutable(featSys).Feature("cx1").EqualTo(cx1 => cx1.Symbol("a1", "a2")) .Feature("cx2").EqualTo(cx2 => cx2.Symbol("b1")) .Feature("cx4").EqualTo(cx4 => cx4.Symbol("d1")).Value; fs2 = FeatureStruct.NewMutable(featSys).Feature("cx1").EqualTo(cx1 => cx1.Symbol("a2")) .Feature("cx3").EqualTo(cx2 => cx2.Symbol("c2")) .Feature("cx4").EqualTo(cx4 => cx4.Symbol("d1", "d2")).Value; Assert.That(resultsSelector(fs1, fs2), Is.EqualTo(expectedSelectors[3](featSys)).Using(comparer)); // re-entrant featSys = new FeatureSystem { new ComplexFeature("cx1"), new SymbolicFeature("a", new FeatureSymbol("a1"), new FeatureSymbol("a2"), new FeatureSymbol("a3"), new FeatureSymbol("a4")), new ComplexFeature("cx2") }; featSys.Freeze(); fs1 = FeatureStruct.NewMutable(featSys).Feature("cx1").EqualTo(1, cx1 => cx1.Symbol("a1")) .Feature("cx2").ReferringTo(1).Value; fs2 = FeatureStruct.NewMutable(featSys).Feature("cx2").EqualTo(cx2 => cx2.Symbol("a2")).Value; Assert.That(resultsSelector(fs1, fs2), Is.EqualTo(expectedSelectors[4](featSys)).Using(comparer)); fs1 = FeatureStruct.NewMutable(featSys).Feature("cx1").EqualTo(cx1 => cx1.Symbol("a1", "a2")).Value; fs2 = FeatureStruct.NewMutable(featSys).Feature("cx2").EqualTo(1, cx2 => cx2.Symbol("a1", "a3")) .Feature("cx1").ReferringTo(1).Value; Assert.That(resultsSelector(fs1, fs2), Is.EqualTo(expectedSelectors[5](featSys)).Using(comparer)); fs1 = FeatureStruct.NewMutable(featSys).Feature("cx1").EqualTo(cx1 => cx1.Symbol("a1", "a2")).Value; fs2 = FeatureStruct.NewMutable(featSys).Feature("cx2").EqualTo(cx2 => cx2.Symbol(1, "a1", "a3")) .Feature("cx1").EqualTo(cx1 => cx1.Feature("a").ReferringTo(1)).Value; Assert.That(resultsSelector(fs1, fs2), Is.EqualTo(expectedSelectors[6](featSys)).Using(comparer)); fs1 = FeatureStruct.NewMutable(featSys).Feature("cx1").EqualTo(1, cx1 => cx1.Symbol("a1")) .Feature("cx2").ReferringTo(1).Value; fs2 = FeatureStruct.NewMutable(featSys).Feature("cx2").EqualTo(1, cx2 => cx2.Symbol("a1", "a2")) .Feature("cx1").ReferringTo(1).Value; Assert.That(resultsSelector(fs1, fs2), Is.EqualTo(expectedSelectors[7](featSys)).Using(comparer)); fs1 = FeatureStruct.NewMutable(featSys).Feature("cx1").EqualTo(1, cx1 => cx1.Symbol("a1", "a2")) .Feature("cx2").ReferringTo(1).Value; fs2 = FeatureStruct.NewMutable(featSys).Feature("cx2").EqualTo(1, cx2 => cx2.Symbol("a2", "a3", "a4")) .Feature("cx1").ReferringTo(1).Value; Assert.That(resultsSelector(fs1, fs2), Is.EqualTo(expectedSelectors[8](featSys)).Using(comparer)); fs1 = FeatureStruct.NewMutable(featSys).Feature("cx1").EqualTo(cx1 => cx1.Symbol(1, "a1", "a2")) .Feature("cx2").EqualTo(cx2 => cx2.Feature("a").ReferringTo(1)).Value; fs2 = FeatureStruct.NewMutable(featSys).Feature("cx2").EqualTo(cx2 => cx2.Symbol(1, "a2", "a3", "a4")) .Feature("cx1").EqualTo(cx1 => cx1.Feature("a").ReferringTo(1)).Value; Assert.That(resultsSelector(fs1, fs2), Is.EqualTo(expectedSelectors[9](featSys)).Using(comparer)); fs1 = FeatureStruct.NewMutable(featSys).Feature("cx1").EqualTo(cx1 => cx1.Symbol("a1", "a2")).Value; fs2 = FeatureStruct.NewMutable(featSys).Feature("cx2").EqualTo(1, cx2 => cx2.Symbol("a3")) .Feature("cx1").ReferringTo(1).Value; Assert.That(resultsSelector(fs1, fs2), Is.EqualTo(expectedSelectors[10](featSys)).Using(comparer)); fs1 = FeatureStruct.NewMutable(featSys).Feature("cx1").EqualTo(1, cx1 => cx1.Symbol("a1")) .Feature("cx2").ReferringTo(1).Value; fs2 = FeatureStruct.NewMutable(featSys).Feature("cx2").EqualTo(1, cx2 => cx2.Symbol("a2", "a3", "a4")) .Feature("cx1").ReferringTo(1).Value; Assert.That(resultsSelector(fs1, fs2), Is.EqualTo(expectedSelectors[11](featSys)).Using(comparer)); // cyclic featSys = new FeatureSystem { new ComplexFeature("cx1"), new SymbolicFeature("a", new FeatureSymbol("a1"), new FeatureSymbol("a2"), new FeatureSymbol("a3")), new SymbolicFeature("b", new FeatureSymbol("b1"), new FeatureSymbol("b2"), new FeatureSymbol("b3")), new SymbolicFeature("c", new FeatureSymbol("c1"), new FeatureSymbol("c2"), new FeatureSymbol("c3")), new ComplexFeature("cx2") }; featSys.Freeze(); fs1 = FeatureStruct.NewMutable(featSys).Feature("cx1").EqualTo(cx1 => cx1 .Symbol("a1").Symbol("b1")).Value; fs2 = FeatureStruct.NewMutable(featSys).Feature("cx1").EqualTo(1, cx1 => cx1 .Symbol("a2").Feature("cx2").ReferringTo(1)).Value; Assert.That(resultsSelector(fs1, fs2), Is.EqualTo(expectedSelectors[12](featSys)).Using(comparer)); fs1 = FeatureStruct.NewMutable(featSys).Feature("cx1").EqualTo(1, cx1 => cx1 .Symbol("a1", "a2").Feature("cx2").ReferringTo(1)).Value; fs2 = FeatureStruct.NewMutable(featSys).Feature("cx1").EqualTo(cx1 => cx1 .Symbol("a2").Symbol("b2")).Value; Assert.That(resultsSelector(fs1, fs2), Is.EqualTo(expectedSelectors[13](featSys)).Using(comparer)); fs1 = FeatureStruct.NewMutable(featSys).Feature("cx1").EqualTo(cx1 => cx1 .Symbol("a1", "a2").Symbol("b1").Feature("cx2").EqualTo(cx2 => cx2.Symbol("c1"))).Value; fs2 = FeatureStruct.NewMutable(featSys).Feature("cx1").EqualTo(1, cx1 => cx1 .Symbol("a2").Feature("cx2").ReferringTo(1)).Value; Assert.That(resultsSelector(fs1, fs2), Is.EqualTo(expectedSelectors[14](featSys)).Using(comparer)); fs1 = FeatureStruct.NewMutable(featSys).Feature("cx1").EqualTo(cx1 => cx1 .Symbol("a1").Symbol("b1").Feature("cx2").EqualTo(cx2 => cx2.Symbol("c1", "c2"))).Value; fs2 = FeatureStruct.NewMutable(featSys).Feature("cx1").EqualTo(1, cx1 => cx1 .Symbol("a2").Symbol("c2").Feature("cx2").ReferringTo(1)).Value; Assert.That(resultsSelector(fs1, fs2), Is.EqualTo(expectedSelectors[15](featSys)).Using(comparer)); fs1 = FeatureStruct.NewMutable(featSys).Feature("cx1").EqualTo(1, cx1 => cx1 .Symbol("a1").Symbol("b1").Symbol("c1").Feature("cx2").ReferringTo(1)).Value; fs2 = FeatureStruct.NewMutable(featSys).Feature("cx1").EqualTo(1, cx1 => cx1 .Symbol("a2").Symbol("c2").Feature("cx2").ReferringTo(1)).Value; Assert.That(resultsSelector(fs1, fs2), Is.EqualTo(expectedSelectors[16](featSys)).Using(comparer)); // variable featSys = new FeatureSystem { new SymbolicFeature("a", new FeatureSymbol("a+", "+"), new FeatureSymbol("a-", "-")), new SymbolicFeature("b", new FeatureSymbol("b+", "+"), new FeatureSymbol("b-", "-")) }; featSys.Freeze(); fs1 = FeatureStruct.NewMutable(featSys) .Feature("a").EqualToVariable("var1") .Symbol("b-").Value; fs2 = FeatureStruct.NewMutable(featSys) .Feature("a").Not.EqualToVariable("var1") .Symbol("b-").Value; Assert.That(resultsSelector(fs1, fs2), Is.EqualTo(expectedSelectors[17](featSys)).Using(comparer)); fs1 = FeatureStruct.NewMutable(featSys) .Feature("a").EqualToVariable("var1") .Symbol("b-").Value; fs2 = FeatureStruct.NewMutable(featSys) .Symbol("a+") .Symbol("b-").Value; Assert.That(resultsSelector(fs1, fs2), Is.EqualTo(expectedSelectors[18](featSys)).Using(comparer)); fs1 = FeatureStruct.NewMutable(featSys) .Symbol("a+") .Symbol("b-").Value; fs2 = FeatureStruct.NewMutable(featSys) .Feature("a").Not.EqualToVariable("var1") .Symbol("b-").Value; Assert.That(resultsSelector(fs1, fs2), Is.EqualTo(expectedSelectors[19](featSys)).Using(comparer)); fs1 = FeatureStruct.NewMutable(featSys) .Symbol("a+") .Symbol("b-").Value; fs2 = FeatureStruct.NewMutable(featSys) .Feature("a").Not.EqualToVariable("var1") .Symbol("b-").Value; var varBindings = new VariableBindings(); varBindings["var1"] = new SymbolicFeatureValue(featSys.GetSymbol("a-")); Assert.That(varResultsSelector(fs1, fs2, varBindings), Is.EqualTo(expectedSelectors[20](featSys)).Using(comparer)); fs1 = FeatureStruct.NewMutable(featSys) .Symbol("a+") .Symbol("b-").Value; fs2 = FeatureStruct.NewMutable(featSys) .Feature("a").Not.EqualToVariable("var1") .Symbol("b-").Value; varBindings = new VariableBindings(); varBindings["var1"] = new SymbolicFeatureValue(featSys.GetSymbol("a+")); Assert.That(varResultsSelector(fs1, fs2, varBindings), Is.EqualTo(expectedSelectors[21](featSys)).Using(comparer)); }
public void Unify() { Func <FeatureStruct, FeatureStruct, FeatureStruct> resultsSelector = (fs1, fs2) => { FeatureStruct res; return(fs1.Unify(fs2, out res) ? res : null); }; Func <FeatureStruct, FeatureStruct, VariableBindings, FeatureStruct> varResultsSelector = (fs1, fs2, varBindings) => { FeatureStruct res; return(fs1.Unify(fs2, varBindings, out res) ? res : null); }; TestBinaryOperation(FreezableEqualityComparer <FeatureStruct> .Default, resultsSelector, varResultsSelector, // simple featSys => null, featSys => FeatureStruct.New(featSys).Symbol("a2").Symbol("b1").Symbol("c2").Value, // complex featSys => null, featSys => FeatureStruct.New(featSys).Feature("cx1").EqualTo(cx1 => cx1.Symbol("a2")) .Feature("cx2").EqualTo(cx2 => cx2.Symbol("b1")) .Feature("cx3").EqualTo(cx2 => cx2.Symbol("c2")) .Feature("cx4").EqualTo(cx4 => cx4.Symbol("d1")).Value, // re-entrant featSys => null, featSys => FeatureStruct.New(featSys).Feature("cx1").EqualTo(1, cx1 => cx1.Symbol("a1")) .Feature("cx2").ReferringTo(1).Value, featSys => FeatureStruct.New(featSys).Feature("cx1").EqualTo(cx1 => cx1.Symbol(1, "a1")) .Feature("cx2").EqualTo(cx2 => cx2.Feature("a").ReferringTo(1)).Value, featSys => FeatureStruct.New(featSys).Feature("cx1").EqualTo(1, cx1 => cx1.Symbol("a1")) .Feature("cx2").ReferringTo(1).Value, featSys => FeatureStruct.New(featSys).Feature("cx1").EqualTo(1, cx1 => cx1.Symbol("a2")) .Feature("cx2").ReferringTo(1).Value, featSys => FeatureStruct.New(featSys).Feature("cx1").EqualTo(cx1 => cx1.Symbol(1, "a2")) .Feature("cx2").EqualTo(cx2 => cx2.Feature("a").ReferringTo(1)).Value, featSys => null, featSys => null, // cyclic featSys => null, featSys => FeatureStruct.New(featSys).Feature("cx1").EqualTo(1, cx1 => cx1 .Symbol("a2").Symbol("b2").Feature("cx2").ReferringTo(1)).Value, featSys => FeatureStruct.New(featSys).Feature("cx1").EqualTo(1, cx1 => cx1 .Symbol("a2").Symbol("b1").Symbol("c1").Feature("cx2").ReferringTo(1)).Value, featSys => null, featSys => null, // variable featSys => null, featSys => FeatureStruct.New(featSys).Symbol("a+").Symbol("b-").Value, featSys => FeatureStruct.New(featSys).Symbol("a+").Symbol("b-").Value, featSys => FeatureStruct.New(featSys).Symbol("a+").Symbol("b-").Value, featSys => null); var featureSystem = new FeatureSystem { new ComplexFeature("a"), new SymbolicFeature("b", new FeatureSymbol("c")), new ComplexFeature("d"), new SymbolicFeature("e", new FeatureSymbol("f")), new ComplexFeature("g"), new SymbolicFeature("h", new FeatureSymbol("j")) }; FeatureStruct featStruct1 = FeatureStruct.New(featureSystem) .Feature("a").EqualTo(a => a .Feature("b").EqualTo("c")) .Feature("d").EqualTo(1, d => d .Feature("e").EqualTo("f")) .Feature("g").ReferringTo(1).Value; FeatureStruct featStruct2 = FeatureStruct.New(featureSystem) .Feature("a").EqualTo(1, a => a .Feature("b").EqualTo("c")) .Feature("d").ReferringTo(1) .Feature("g").EqualTo(g => g .Feature("h").EqualTo("j")).Value; FeatureStruct result; Assert.IsTrue(featStruct1.Unify(featStruct2, out result)); featureSystem = new FeatureSystem { new ComplexFeature("a"), new SymbolicFeature("b", new FeatureSymbol("c")), new ComplexFeature("d"), new SymbolicFeature("e", new FeatureSymbol("f")), new ComplexFeature("g"), new SymbolicFeature("h", new FeatureSymbol("j")), new ComplexFeature("i") }; featStruct1 = FeatureStruct.New(featureSystem) .Feature("a").EqualTo(1, a => a .Feature("b").EqualTo("c")) .Feature("d").EqualTo(2, d => d .Feature("e").EqualTo("f")) .Feature("g").ReferringTo(2) .Feature("i").ReferringTo(1).Value; featStruct2 = FeatureStruct.New(featureSystem) .Feature("a").EqualTo(1, a => a .Feature("b").EqualTo("c")) .Feature("d").EqualTo(g => g .Feature("h").EqualTo("j")) .Feature("g").ReferringTo(1).Value; Assert.That(featStruct1.Unify(featStruct2, out result), Is.True); Assert.That(result, Is.EqualTo(FeatureStruct.New(featureSystem) .Feature("a").EqualTo(1, a => a .Feature("b").EqualTo("c") .Feature("e").EqualTo("f") .Feature("h").EqualTo("j")) .Feature("d").ReferringTo(1) .Feature("g").ReferringTo(1) .Feature("i").ReferringTo(1).Value).Using(FreezableEqualityComparer <FeatureStruct> .Default)); }