/// <summary>
/// Compiles a collection of transformation tables into a state machine.
/// </summary>
/// <param name="transformations">The transformations.</param>
/// <returns>
/// Compiled state machine.
/// </returns>
public StateMachine Compile(IEnumerable <IGlyphTransformationTable> transformations)
{
var builder = new StateMachineBuilder();
foreach (var transformation in transformations)
{
this.CompileTransformation(transformation, builder);
}
return(builder.GetStateMachine());
}
/// <summary>
/// Tests that multiple calls to AddPath yield correct state machine.
/// </summary>
/// <param name="paths">The paths.</param>
/// <param name="expectedEntryState">Expected state of the entry.</param>
public void TestAddPaths(ITransition[][] paths, State expectedEntryState)
{
var builder = new StateMachineBuilder();
foreach (var path in paths)
{
builder.AddPath(path);
}
var result = builder.GetStateMachine();
var expectedMachine = new StateMachine(expectedEntryState);
Assert.IsTrue(new StateMachineEqualityComparer().Equals(expectedMachine, result));
}
public void UngroupPath_SimplePathWithBackTransitions_UngroupsThePath()
{
State state1 = new State(), state2;
state1.Transitions.Add(new AlwaysTransition {
TargetState = state1
});
var path = new ITransition[]
{
new SimpleTransition
{
HeadShift = 1,
GlyphId = 1,
Action = new SubstitutionAction {
ReplacedGlyphCount = 1
},
LookupFlags = LookupFlags.IgnoreBaseGlyphs,
TargetState = state1
},
new SetTransition
{
HeadShift = 2,
GlyphIdSet = new HashSet <ushort> {
21, 22, 23
},
Action = new SubstitutionAction {
ReplacedGlyphCount = 2
},
LookupFlags = LookupFlags.IgnoreBaseGlyphs,
TargetState = state2 = new State(),
},
new AlwaysTransition
{
HeadShift = 3,
Action = new SubstitutionAction {
ReplacedGlyphCount = 3
},
LookupFlags = LookupFlags.IgnoreBaseGlyphs,
TargetState = new State {
Transitions = new ITransition[] { new AlwaysTransition {
TargetState = state2
} }
}
}
};
var builder = new StateMachineBuilder();
var result = builder.UngroupPath(path).ToList();
var expectedPaths = new IEnumerable <ITransition>[]
{
new ITransition[]
{
new SimpleTransition
{
HeadShift = 1,
GlyphId = 1,
Action = new SubstitutionAction {
ReplacedGlyphCount = 1
},
LookupFlags = LookupFlags.IgnoreBaseGlyphs
},
new SimpleTransition
{
HeadShift = 2,
GlyphId = 21,
Action = new SubstitutionAction {
ReplacedGlyphCount = 2
},
LookupFlags = LookupFlags.IgnoreBaseGlyphs
},
new AlwaysTransition
{
HeadShift = 3,
Action = new SubstitutionAction {
ReplacedGlyphCount = 3
},
LookupFlags = LookupFlags.IgnoreBaseGlyphs
}
},
new ITransition[]
{
new SimpleTransition
{
HeadShift = 1,
GlyphId = 1,
Action = new SubstitutionAction {
ReplacedGlyphCount = 1
},
LookupFlags = LookupFlags.IgnoreBaseGlyphs
},
new SimpleTransition
{
HeadShift = 2,
GlyphId = 22,
Action = new SubstitutionAction {
ReplacedGlyphCount = 2
},
LookupFlags = LookupFlags.IgnoreBaseGlyphs
},
new AlwaysTransition
{
HeadShift = 3,
Action = new SubstitutionAction {
ReplacedGlyphCount = 3
},
LookupFlags = LookupFlags.IgnoreBaseGlyphs
}
},
new ITransition[]
{
new SimpleTransition
{
HeadShift = 1,
GlyphId = 1,
Action = new SubstitutionAction {
ReplacedGlyphCount = 1
},
LookupFlags = LookupFlags.IgnoreBaseGlyphs
},
new SimpleTransition
{
HeadShift = 2,
GlyphId = 23,
Action = new SubstitutionAction {
ReplacedGlyphCount = 2
},
LookupFlags = LookupFlags.IgnoreBaseGlyphs
},
new AlwaysTransition
{
HeadShift = 3,
Action = new SubstitutionAction {
ReplacedGlyphCount = 3
},
LookupFlags = LookupFlags.IgnoreBaseGlyphs
}
}
};
var comparer = new PathEqualityComparer();
Assert.IsTrue(comparer.Equals(expectedPaths[0], result[0]));
Assert.IsTrue(comparer.Equals(expectedPaths[1], result[1]));
Assert.IsTrue(comparer.Equals(expectedPaths[2], result[2]));
Assert.AreEqual(expectedPaths.Length, result.Count);
Assert.AreSame(result[0].First().TargetState.Transitions.First().TargetState, result[0].First().TargetState);
Assert.AreSame(result[2].ElementAt(2).TargetState.Transitions.First().TargetState, result[2].ElementAt(1).TargetState);
}
public void UngroupPath_SimplePath_UngroupsThePath()
{
var path = new ITransition[]
{
new SimpleTransition
{
HeadShift = 1,
GlyphId = 1,
Action = new SubstitutionAction {
ReplacedGlyphCount = 1
},
LookupFlags = LookupFlags.IgnoreBaseGlyphs
},
new SetTransition
{
HeadShift = 2,
GlyphIdSet = new HashSet <ushort> {
21, 22, 23
},
Action = new SubstitutionAction {
ReplacedGlyphCount = 2
},
LookupFlags = LookupFlags.IgnoreBaseGlyphs
},
new AlwaysTransition
{
HeadShift = 3,
Action = new SubstitutionAction {
ReplacedGlyphCount = 3
},
LookupFlags = LookupFlags.IgnoreBaseGlyphs
}
};
var builder = new StateMachineBuilder();
var result = builder.UngroupPath(path).ToList();
var expectedPaths = new IEnumerable <ITransition>[]
{
new ITransition[]
{
new SimpleTransition
{
HeadShift = 1,
GlyphId = 1,
Action = new SubstitutionAction {
ReplacedGlyphCount = 1
},
LookupFlags = LookupFlags.IgnoreBaseGlyphs
},
new SimpleTransition
{
HeadShift = 2,
GlyphId = 21,
Action = new SubstitutionAction {
ReplacedGlyphCount = 2
},
LookupFlags = LookupFlags.IgnoreBaseGlyphs
},
new AlwaysTransition
{
HeadShift = 3,
Action = new SubstitutionAction {
ReplacedGlyphCount = 3
},
LookupFlags = LookupFlags.IgnoreBaseGlyphs
}
},
new ITransition[]
{
new SimpleTransition
{
HeadShift = 1,
GlyphId = 1,
Action = new SubstitutionAction {
ReplacedGlyphCount = 1
},
LookupFlags = LookupFlags.IgnoreBaseGlyphs
},
new SimpleTransition
{
HeadShift = 2,
GlyphId = 22,
Action = new SubstitutionAction {
ReplacedGlyphCount = 2
},
LookupFlags = LookupFlags.IgnoreBaseGlyphs
},
new AlwaysTransition
{
HeadShift = 3,
Action = new SubstitutionAction {
ReplacedGlyphCount = 3
},
LookupFlags = LookupFlags.IgnoreBaseGlyphs
}
},
new ITransition[]
{
new SimpleTransition
{
HeadShift = 1,
GlyphId = 1,
Action = new SubstitutionAction {
ReplacedGlyphCount = 1
},
LookupFlags = LookupFlags.IgnoreBaseGlyphs
},
new SimpleTransition
{
HeadShift = 2,
GlyphId = 23,
Action = new SubstitutionAction {
ReplacedGlyphCount = 2
},
LookupFlags = LookupFlags.IgnoreBaseGlyphs
},
new AlwaysTransition
{
HeadShift = 3,
Action = new SubstitutionAction {
ReplacedGlyphCount = 3
},
LookupFlags = LookupFlags.IgnoreBaseGlyphs
}
}
};
var comparer = new PathEqualityComparer();
Assert.IsTrue(comparer.Equals(expectedPaths[0], result[0]));
Assert.IsTrue(comparer.Equals(expectedPaths[1], result[1]));
Assert.IsTrue(comparer.Equals(expectedPaths[2], result[2]));
Assert.AreEqual(expectedPaths.Length, result.Count);
}
public void GetStateMachine_ForkingPath_CollectsAllStatesAndTransitions()
{
SimpleTransition commonTransition, forkedTransition1, forkedTransition2;
var paths = new[]
{
new[]
{
commonTransition = new SimpleTransition
{
GlyphId = 1,
HeadShift = 1,
Action = new SubstitutionAction
{
ReplacedGlyphCount = 1,
ReplacementGlyphIds = new ushort[] { 1 }
}
},
forkedTransition1 = new SimpleTransition
{
GlyphId = 2,
HeadShift = 2,
Action = new SubstitutionAction
{
ReplacedGlyphCount = 2,
ReplacementGlyphIds = new ushort[] { 2 }
}
}
},
new[]
{
new SimpleTransition
{
GlyphId = 1,
HeadShift = 1,
Action = new SubstitutionAction
{
ReplacedGlyphCount = 1,
ReplacementGlyphIds = new ushort[] { 1 }
}
},
forkedTransition2 = new SimpleTransition {
GlyphId = 3,
HeadShift = 3,
Action = new SubstitutionAction
{
ReplacedGlyphCount = 3,
ReplacementGlyphIds = new ushort[] { 3 }
}
}
}
};
var builder = new StateMachineBuilder();
foreach (var path in paths)
{
builder.AddPath(path);
}
var result = builder.GetStateMachine();
Assert.AreEqual(result.States.Count, 4);
Assert.IsTrue(
new[] { commonTransition, forkedTransition1, forkedTransition2 }.ValuesEqual(result.Transitions, new TransitionNonrecursiveEqualityComparer()));
}
