debug

var (
	B = literal.B
	F = literal.F
	I = literal.I
	T = literal.T
)

var Blob []byte

var FactorialCheck = []rt.Execute{
	&debug.Expect{
		Value: &math.CompareNum{
			A: F(6), Compare: math.C_Comparison_EqualTo, B: &call.CallPattern{
				PatternName: "factorial",
				Arguments: []call.Arg{{
					Name:  "num",
					Value: &call.FromNum{Value: F(3)},
				}}},
		},
	},
}

var FactorialDecreaseRule = []rt.Execute{
	&logic.ChooseBranch{
		Condition: &math.CompareNum{
			Markup:  UserComment("above zero, subtract one"),
			A:       object.Variable("num"),
			Compare: math.C_Comparison_GreaterThan,
			B:       F(0)},
		Exe: FactorialMulMinusOne,
	},
}

var FactorialDefaultRule = []rt.Execute{
	&object.SetValue{
		Markup: UserComment("by default, return one"),
		Target: object.Variable("num"),
		Value:  &call.FromNum{Value: I(1)},
	},
}

var FactorialJs string

var FactorialMulMinusOne = []rt.Execute{
	&object.SetValue{
		Target: object.Variable("num"),
		Value: &call.FromNum{Value: &math.MultiplyValue{
			A: object.Variable("num"),
			B: &math.SubtractValue{
				A: object.Variable("num"),
				B: I(1),
			},
		}}},
}

var FactorialStory = story.StoryFile{
	Statements: []story.StoryStatement{
		&story.DefineScene{
			SceneName: T("factorial"),
			Exe:       FactorialCheck,
		},
		&story.DefinePattern{
			PatternName: T("factorial"),
			Requires: []story.FieldDefinition{
				&story.NumField{
					Markup:    UserComment("just one argument, a number called 'num'"),
					FieldName: T("num"),
				}},
			Provides: []story.FieldDefinition{&story.NumField{
				Markup:    UserComment("the result uses the same variable as the pattern input does"),
				FieldName: T("num"),
			}},
			Exe: FactorialDefaultRule,
		},
		&story.DefineRule{
			RuleTiming: T("factorial"),
			Exe:        FactorialDecreaseRule,
		}},
}

var SayPattern = testpat.Pattern{
	Name:   "say me",
	Labels: []string{"num"},
	Fields: []rt.Field{
		{Name: "num", Affinity: "number", Type: ""},
	},
	Rules: []rt.Rule{{
		Name: "default", Exe: SayIt("Not between 1 and 3."),
	}, {
		Name: "3b", Exe: []rt.Execute{&logic.ChooseBranch{
			Condition: &MatchNumber{3}, Exe: SayIt("San!")},
		},
	}, {
		Name: "3a", Exe: []rt.Execute{&logic.ChooseBranch{
			Condition: &MatchNumber{3}, Exe: SayIt("Three!")},
		},
	}, {
		Name: "2", Exe: []rt.Execute{&logic.ChooseBranch{
			Condition: &MatchNumber{2}, Exe: SayIt("Two!")},
		},
	}, {
		Name: "1", Exe: []rt.Execute{&logic.ChooseBranch{
			Condition: &MatchNumber{1}, Exe: SayIt("One!")},
		},
	}},
}