example

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 Go to latest Published: Mar 22, 2023 License: MIT Imports: 2 Imported by: 0

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Overview

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Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func CalcSchemaDef added in v1.9.0 

func CalcSchemaDef() *schema.UnionVariants[Calc]

func MatchCalc added in v1.10.0 

func MatchCalc[TOut any](
	x Calc,
	f1 func(x *Lit) TOut,
	f2 func(x *Sum) TOut,
	f3 func(x *Mul) TOut,
	df func(x Calc) TOut,
) TOut

func MatchCalcR2 added in v1.10.0 

func MatchCalcR2[TOut1, TOut2 any](
	x Calc,
	f1 func(x *Lit) (TOut1, TOut2),
	f2 func(x *Sum) (TOut1, TOut2),
	f3 func(x *Mul) (TOut1, TOut2),
	df func(x Calc) (TOut1, TOut2),
) (TOut1, TOut2)

func MatchTree added in v1.10.0 

func MatchTree[TOut any](
	x Tree,
	f1 func(x *Branch) TOut,
	f2 func(x *Leaf) TOut,
	df func(x Tree) TOut,
) TOut

func MatchTreeR2 added in v1.10.0 

func MatchTreeR2[TOut1, TOut2 any](
	x Tree,
	f1 func(x *Branch) (TOut1, TOut2),
	f2 func(x *Leaf) (TOut1, TOut2),
	df func(x Tree) (TOut1, TOut2),
) (TOut1, TOut2)

func MatchVehicle added in v1.10.0 

func MatchVehicle[TOut any](
	x Vehicle,
	f1 func(x *Car) TOut,
	f2 func(x *Plane) TOut,
	f3 func(x *Boat) TOut,
	df func(x Vehicle) TOut,
) TOut

func MatchVehicleR2 added in v1.10.0 

func MatchVehicleR2[TOut1, TOut2 any](
	x Vehicle,
	f1 func(x *Car) (TOut1, TOut2),
	f2 func(x *Plane) (TOut1, TOut2),
	f3 func(x *Boat) (TOut1, TOut2),
	df func(x Vehicle) (TOut1, TOut2),
) (TOut1, TOut2)

func MatchWherePredicate added in v1.10.0 

func MatchWherePredicate[TOut any](
	x WherePredicate,
	f1 func(x *Eq) TOut,
	f2 func(x *And) TOut,
	f3 func(x *Or) TOut,
	f4 func(x *Path) TOut,
	df func(x WherePredicate) TOut,
) TOut

func MatchWherePredicateR2 added in v1.10.0 

func MatchWherePredicateR2[TOut1, TOut2 any](
	x WherePredicate,
	f1 func(x *Eq) (TOut1, TOut2),
	f2 func(x *And) (TOut1, TOut2),
	f3 func(x *Or) (TOut1, TOut2),
	f4 func(x *Path) (TOut1, TOut2),
	df func(x WherePredicate) (TOut1, TOut2),
) (TOut1, TOut2)

func MustMatchCalc added in v1.4.0 

func MustMatchCalc[TOut any](
	x Calc,
	f1 func(x *Lit) TOut,
	f2 func(x *Sum) TOut,
	f3 func(x *Mul) TOut,
) TOut

func MustMatchCalcR2 added in v1.7.1 

func MustMatchCalcR2[TOut1, TOut2 any](
	x Calc,
	f1 func(x *Lit) (TOut1, TOut2),
	f2 func(x *Sum) (TOut1, TOut2),
	f3 func(x *Mul) (TOut1, TOut2),
) (TOut1, TOut2)

func MustMatchTree added in v1.4.0 

func MustMatchTree[TOut any](
	x Tree,
	f1 func(x *Branch) TOut,
	f2 func(x *Leaf) TOut,
) TOut

func MustMatchTreeR2 added in v1.7.1 

func MustMatchTreeR2[TOut1, TOut2 any](
	x Tree,
	f1 func(x *Branch) (TOut1, TOut2),
	f2 func(x *Leaf) (TOut1, TOut2),
) (TOut1, TOut2)

func MustMatchVehicle added in v1.4.0 

func MustMatchVehicle[TOut any](
	x Vehicle,
	f1 func(x *Car) TOut,
	f2 func(x *Plane) TOut,
	f3 func(x *Boat) TOut,
) TOut

func MustMatchVehicleR2 added in v1.7.1 

func MustMatchVehicleR2[TOut1, TOut2 any](
	x Vehicle,
	f1 func(x *Car) (TOut1, TOut2),
	f2 func(x *Plane) (TOut1, TOut2),
	f3 func(x *Boat) (TOut1, TOut2),
) (TOut1, TOut2)

func MustMatchWherePredicate added in v1.4.0 

func MustMatchWherePredicate[TOut any](
	x WherePredicate,
	f1 func(x *Eq) TOut,
	f2 func(x *And) TOut,
	f3 func(x *Or) TOut,
	f4 func(x *Path) TOut,
) TOut

func MustMatchWherePredicateR2 added in v1.7.1 

func MustMatchWherePredicateR2[TOut1, TOut2 any](
	x WherePredicate,
	f1 func(x *Eq) (TOut1, TOut2),
	f2 func(x *And) (TOut1, TOut2),
	f3 func(x *Or) (TOut1, TOut2),
	f4 func(x *Path) (TOut1, TOut2),
) (TOut1, TOut2)

func ReduceCalcBreadthFirst added in v1.2.0 

func ReduceCalcBreadthFirst[A any](r CalcReducer[A], v Calc, init A) A

func ReduceCalcDepthFirst added in v1.2.0 

func ReduceCalcDepthFirst[A any](r CalcReducer[A], v Calc, init A) A

func ReduceTreeBreadthFirst added in v1.2.0 

func ReduceTreeBreadthFirst[A any](r TreeReducer[A], v Tree, init A) A

func ReduceTreeDepthFirst added in v1.2.0 

func ReduceTreeDepthFirst[A any](r TreeReducer[A], v Tree, init A) A

func ReduceVehicleBreadthFirst added in v1.2.0 

func ReduceVehicleBreadthFirst[A any](r VehicleReducer[A], v Vehicle, init A) A

func ReduceVehicleDepthFirst added in v1.2.0 

func ReduceVehicleDepthFirst[A any](r VehicleReducer[A], v Vehicle, init A) A

func ReduceWherePredicateBreadthFirst added in v1.2.0 

func ReduceWherePredicateBreadthFirst[A any](r WherePredicateReducer[A], v WherePredicate, init A) A

func ReduceWherePredicateDepthFirst added in v1.2.0 

func ReduceWherePredicateDepthFirst[A any](r WherePredicateReducer[A], v WherePredicate, init A) A

func TreeSchemaDef added in v1.9.0 

func TreeSchemaDef() *schema.UnionVariants[Tree]

func VehicleSchemaDef added in v1.9.0 

func VehicleSchemaDef() *schema.UnionVariants[Vehicle]

Types

type And 

type And []WherePredicate

func (*And) Accept 

func (r *And) Accept(v WherePredicateVisitor) any

type Boat 

type Boat struct{}

func (*Boat) Accept 

func (r *Boat) Accept(v VehicleVisitor) any

type Branch 

type Branch struct{ L, R Tree }

func (*Branch) Accept 

func (r *Branch) Accept(v TreeVisitor) any

type Calc added in v1.1.0 

type Calc interface {
	Accept(g CalcVisitor) any
}

type CalcBreadthFirstVisitor added in v1.2.0 

type CalcBreadthFirstVisitor[A any] struct {
	// contains filtered or unexported fields
}

func (*CalcBreadthFirstVisitor[A]) VisitLit added in v1.2.0 

func (d *CalcBreadthFirstVisitor[A]) VisitLit(v *Lit) any

func (*CalcBreadthFirstVisitor[A]) VisitMul added in v1.2.0 

func (d *CalcBreadthFirstVisitor[A]) VisitMul(v *Mul) any

func (*CalcBreadthFirstVisitor[A]) VisitSum added in v1.2.0 

func (d *CalcBreadthFirstVisitor[A]) VisitSum(v *Sum) any

type CalcDefaultReduction added in v1.1.0 

type CalcDefaultReduction[A any] struct {
	PanicOnFallback      bool
	DefaultStopReduction bool
	OnLit                func(x *Lit, agg A) (result A, stop bool)
	OnSum                func(x *Sum, agg A) (result A, stop bool)
	OnMul                func(x *Mul, agg A) (result A, stop bool)
}

func (*CalcDefaultReduction[A]) ReduceLit added in v1.1.0 

func (t *CalcDefaultReduction[A]) ReduceLit(x *Lit, agg A) (result A, stop bool)

func (*CalcDefaultReduction[A]) ReduceMul added in v1.1.0 

func (t *CalcDefaultReduction[A]) ReduceMul(x *Mul, agg A) (result A, stop bool)

func (*CalcDefaultReduction[A]) ReduceSum added in v1.1.0 

func (t *CalcDefaultReduction[A]) ReduceSum(x *Sum, agg A) (result A, stop bool)

type CalcDefaultVisitor added in v1.1.0 

type CalcDefaultVisitor[A any] struct {
	Default A
	OnLit   func(x *Lit) A
	OnSum   func(x *Sum) A
	OnMul   func(x *Mul) A
}

func (*CalcDefaultVisitor[A]) VisitLit added in v1.1.0 

func (t *CalcDefaultVisitor[A]) VisitLit(v *Lit) any

func (*CalcDefaultVisitor[A]) VisitMul added in v1.1.0 

func (t *CalcDefaultVisitor[A]) VisitMul(v *Mul) any

func (*CalcDefaultVisitor[A]) VisitSum added in v1.1.0 

func (t *CalcDefaultVisitor[A]) VisitSum(v *Sum) any

type CalcDepthFirstVisitor added in v1.1.0 

type CalcDepthFirstVisitor[A any] struct {
	// contains filtered or unexported fields
}

func (*CalcDepthFirstVisitor[A]) VisitLit added in v1.1.0 

func (d *CalcDepthFirstVisitor[A]) VisitLit(v *Lit) any

func (*CalcDepthFirstVisitor[A]) VisitMul added in v1.1.0 

func (d *CalcDepthFirstVisitor[A]) VisitMul(v *Mul) any

func (*CalcDepthFirstVisitor[A]) VisitSum added in v1.1.0 

func (d *CalcDepthFirstVisitor[A]) VisitSum(v *Sum) any

type CalcReducer added in v1.1.0 

type CalcReducer[A any] interface {
	ReduceLit(x *Lit, agg A) (result A, stop bool)
	ReduceSum(x *Sum, agg A) (result A, stop bool)
	ReduceMul(x *Mul, agg A) (result A, stop bool)
}

type CalcVisitor added in v1.1.0 

type CalcVisitor interface {
	VisitLit(v *Lit) any
	VisitSum(v *Sum) any
	VisitMul(v *Mul) any
}

type Car 

type Car struct{}

func (*Car) Accept 

func (r *Car) Accept(v VehicleVisitor) any

type Eq 

type Eq struct{ V interface{} }

func (*Eq) Accept 

func (r *Eq) Accept(v WherePredicateVisitor) any

type Leaf 

type Leaf struct{ Value int }

func (*Leaf) Accept 

func (r *Leaf) Accept(v TreeVisitor) any

type Lit added in v1.1.0 

type Lit struct{ V int }

func (*Lit) Accept added in v1.1.0 

func (r *Lit) Accept(v CalcVisitor) any

type Mul added in v1.1.0 

type Mul struct{ Left, Right Calc }

func (*Mul) Accept added in v1.1.0 

func (r *Mul) Accept(v CalcVisitor) any

type One added in v1.9.0 

type One struct{}

type Or 

type Or []WherePredicate

func (*Or) Accept 

func (r *Or) Accept(v WherePredicateVisitor) any

type Path 

type Path struct {
	Parts     []string
	Condition WherePredicate
	Then      []WherePredicate
	X         Eq
	Y         map[string]WherePredicate
}

func (*Path) Accept 

func (r *Path) Accept(v WherePredicateVisitor) any

type Plane 

type Plane struct{}

func (*Plane) Accept 

func (r *Plane) Accept(v VehicleVisitor) any

type Sum added in v1.1.0 

type Sum struct{ Left, Right Calc }

func (*Sum) Accept added in v1.1.0 

func (r *Sum) Accept(v CalcVisitor) any

type Tree 

type Tree interface {
	Accept(g TreeVisitor) any
}

type TreeBreadthFirstVisitor added in v1.2.0 

type TreeBreadthFirstVisitor[A any] struct {
	// contains filtered or unexported fields
}

func (*TreeBreadthFirstVisitor[A]) VisitBranch added in v1.2.0 

func (d *TreeBreadthFirstVisitor[A]) VisitBranch(v *Branch) any

func (*TreeBreadthFirstVisitor[A]) VisitLeaf added in v1.2.0 

func (d *TreeBreadthFirstVisitor[A]) VisitLeaf(v *Leaf) any

type TreeDefaultReduction 

type TreeDefaultReduction[A any] struct {
	PanicOnFallback      bool
	DefaultStopReduction bool
	OnBranch             func(x *Branch, agg A) (result A, stop bool)
	OnLeaf               func(x *Leaf, agg A) (result A, stop bool)
}

func (*TreeDefaultReduction[A]) ReduceBranch 

func (t *TreeDefaultReduction[A]) ReduceBranch(x *Branch, agg A) (result A, stop bool)

func (*TreeDefaultReduction[A]) ReduceLeaf 

func (t *TreeDefaultReduction[A]) ReduceLeaf(x *Leaf, agg A) (result A, stop bool)

type TreeDefaultVisitor 

type TreeDefaultVisitor[A any] struct {
	Default  A
	OnBranch func(x *Branch) A
	OnLeaf   func(x *Leaf) A
}

func (*TreeDefaultVisitor[A]) VisitBranch 

func (t *TreeDefaultVisitor[A]) VisitBranch(v *Branch) any

func (*TreeDefaultVisitor[A]) VisitLeaf 

func (t *TreeDefaultVisitor[A]) VisitLeaf(v *Leaf) any

type TreeDepthFirstVisitor 

type TreeDepthFirstVisitor[A any] struct {
	// contains filtered or unexported fields
}

func (*TreeDepthFirstVisitor[A]) VisitBranch 

func (d *TreeDepthFirstVisitor[A]) VisitBranch(v *Branch) any

func (*TreeDepthFirstVisitor[A]) VisitLeaf 

func (d *TreeDepthFirstVisitor[A]) VisitLeaf(v *Leaf) any

type TreeReducer 

type TreeReducer[A any] interface {
	ReduceBranch(x *Branch, agg A) (result A, stop bool)
	ReduceLeaf(x *Leaf, agg A) (result A, stop bool)
}

type TreeVisitor 

type TreeVisitor interface {
	VisitBranch(v *Branch) any
	VisitLeaf(v *Leaf) any
}

type Vehicle 

type Vehicle interface {
	Accept(g VehicleVisitor) any
}

type VehicleBreadthFirstVisitor added in v1.2.0 

type VehicleBreadthFirstVisitor[A any] struct {
	// contains filtered or unexported fields
}

func (*VehicleBreadthFirstVisitor[A]) VisitBoat added in v1.2.0 

func (d *VehicleBreadthFirstVisitor[A]) VisitBoat(v *Boat) any

func (*VehicleBreadthFirstVisitor[A]) VisitCar added in v1.2.0 

func (d *VehicleBreadthFirstVisitor[A]) VisitCar(v *Car) any

func (*VehicleBreadthFirstVisitor[A]) VisitPlane added in v1.2.0 

func (d *VehicleBreadthFirstVisitor[A]) VisitPlane(v *Plane) any

type VehicleDefaultReduction 

type VehicleDefaultReduction[A any] struct {
	PanicOnFallback      bool
	DefaultStopReduction bool
	OnCar                func(x *Car, agg A) (result A, stop bool)
	OnPlane              func(x *Plane, agg A) (result A, stop bool)
	OnBoat               func(x *Boat, agg A) (result A, stop bool)
}

func (*VehicleDefaultReduction[A]) ReduceBoat 

func (t *VehicleDefaultReduction[A]) ReduceBoat(x *Boat, agg A) (result A, stop bool)

func (*VehicleDefaultReduction[A]) ReduceCar 

func (t *VehicleDefaultReduction[A]) ReduceCar(x *Car, agg A) (result A, stop bool)

func (*VehicleDefaultReduction[A]) ReducePlane 

func (t *VehicleDefaultReduction[A]) ReducePlane(x *Plane, agg A) (result A, stop bool)

type VehicleDefaultVisitor 

type VehicleDefaultVisitor[A any] struct {
	Default A
	OnCar   func(x *Car) A
	OnPlane func(x *Plane) A
	OnBoat  func(x *Boat) A
}

func (*VehicleDefaultVisitor[A]) VisitBoat 

func (t *VehicleDefaultVisitor[A]) VisitBoat(v *Boat) any

func (*VehicleDefaultVisitor[A]) VisitCar 

func (t *VehicleDefaultVisitor[A]) VisitCar(v *Car) any

func (*VehicleDefaultVisitor[A]) VisitPlane 

func (t *VehicleDefaultVisitor[A]) VisitPlane(v *Plane) any

type VehicleDepthFirstVisitor 

type VehicleDepthFirstVisitor[A any] struct {
	// contains filtered or unexported fields
}

func (*VehicleDepthFirstVisitor[A]) VisitBoat 

func (d *VehicleDepthFirstVisitor[A]) VisitBoat(v *Boat) any

func (*VehicleDepthFirstVisitor[A]) VisitCar 

func (d *VehicleDepthFirstVisitor[A]) VisitCar(v *Car) any

func (*VehicleDepthFirstVisitor[A]) VisitPlane 

func (d *VehicleDepthFirstVisitor[A]) VisitPlane(v *Plane) any

type VehicleReducer 

type VehicleReducer[A any] interface {
	ReduceCar(x *Car, agg A) (result A, stop bool)
	ReducePlane(x *Plane, agg A) (result A, stop bool)
	ReduceBoat(x *Boat, agg A) (result A, stop bool)
}

type VehicleVisitor 

type VehicleVisitor interface {
	VisitCar(v *Car) any
	VisitPlane(v *Plane) any
	VisitBoat(v *Boat) any
}

type WherePredicate 

type WherePredicate interface {
	Accept(g WherePredicateVisitor) any
}

type WherePredicateBreadthFirstVisitor added in v1.2.0 

type WherePredicateBreadthFirstVisitor[A any] struct {
	// contains filtered or unexported fields
}

func (*WherePredicateBreadthFirstVisitor[A]) VisitAnd added in v1.2.0 

func (d *WherePredicateBreadthFirstVisitor[A]) VisitAnd(v *And) any

func (*WherePredicateBreadthFirstVisitor[A]) VisitEq added in v1.2.0 

func (d *WherePredicateBreadthFirstVisitor[A]) VisitEq(v *Eq) any

func (*WherePredicateBreadthFirstVisitor[A]) VisitOr added in v1.2.0 

func (d *WherePredicateBreadthFirstVisitor[A]) VisitOr(v *Or) any

func (*WherePredicateBreadthFirstVisitor[A]) VisitPath added in v1.2.0 

func (d *WherePredicateBreadthFirstVisitor[A]) VisitPath(v *Path) any

type WherePredicateDefaultReduction 

type WherePredicateDefaultReduction[A any] struct {
	PanicOnFallback      bool
	DefaultStopReduction bool
	OnEq                 func(x *Eq, agg A) (result A, stop bool)
	OnAnd                func(x *And, agg A) (result A, stop bool)
	OnOr                 func(x *Or, agg A) (result A, stop bool)
	OnPath               func(x *Path, agg A) (result A, stop bool)
}

func (*WherePredicateDefaultReduction[A]) ReduceAnd 

func (t *WherePredicateDefaultReduction[A]) ReduceAnd(x *And, agg A) (result A, stop bool)

func (*WherePredicateDefaultReduction[A]) ReduceEq 

func (t *WherePredicateDefaultReduction[A]) ReduceEq(x *Eq, agg A) (result A, stop bool)

func (*WherePredicateDefaultReduction[A]) ReduceOr 

func (t *WherePredicateDefaultReduction[A]) ReduceOr(x *Or, agg A) (result A, stop bool)

func (*WherePredicateDefaultReduction[A]) ReducePath 

func (t *WherePredicateDefaultReduction[A]) ReducePath(x *Path, agg A) (result A, stop bool)

type WherePredicateDefaultVisitor 

type WherePredicateDefaultVisitor[A any] struct {
	Default A
	OnEq    func(x *Eq) A
	OnAnd   func(x *And) A
	OnOr    func(x *Or) A
	OnPath  func(x *Path) A
}

func (*WherePredicateDefaultVisitor[A]) VisitAnd 

func (t *WherePredicateDefaultVisitor[A]) VisitAnd(v *And) any

func (*WherePredicateDefaultVisitor[A]) VisitEq 

func (t *WherePredicateDefaultVisitor[A]) VisitEq(v *Eq) any

func (*WherePredicateDefaultVisitor[A]) VisitOr 

func (t *WherePredicateDefaultVisitor[A]) VisitOr(v *Or) any

func (*WherePredicateDefaultVisitor[A]) VisitPath 

func (t *WherePredicateDefaultVisitor[A]) VisitPath(v *Path) any

type WherePredicateDepthFirstVisitor 

type WherePredicateDepthFirstVisitor[A any] struct {
	// contains filtered or unexported fields
}

func (*WherePredicateDepthFirstVisitor[A]) VisitAnd 

func (d *WherePredicateDepthFirstVisitor[A]) VisitAnd(v *And) any

func (*WherePredicateDepthFirstVisitor[A]) VisitEq 

func (d *WherePredicateDepthFirstVisitor[A]) VisitEq(v *Eq) any

func (*WherePredicateDepthFirstVisitor[A]) VisitOr 

func (d *WherePredicateDepthFirstVisitor[A]) VisitOr(v *Or) any

func (*WherePredicateDepthFirstVisitor[A]) VisitPath 

func (d *WherePredicateDepthFirstVisitor[A]) VisitPath(v *Path) any

type WherePredicateReducer 

type WherePredicateReducer[A any] interface {
	ReduceEq(x *Eq, agg A) (result A, stop bool)
	ReduceAnd(x *And, agg A) (result A, stop bool)
	ReduceOr(x *Or, agg A) (result A, stop bool)
	ReducePath(x *Path, agg A) (result A, stop bool)
}

type WherePredicateVisitor 

type WherePredicateVisitor interface {
	VisitEq(v *Eq) any
	VisitAnd(v *And) any
	VisitOr(v *Or) any
	VisitPath(v *Path) any
}

Source Files

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Path Synopsis
Package ast defines the AST for simple language AST can be created either by parser or by hand, it's up to implementer to decide how to create AST This package provides few examples of AST creation mostly by parsing JSON - ast_sugar.go - ast_human_friendly.go - ast_description_of_best_result Much more advance parser is also possible, but it's not implemented here
 Package ast defines the AST for simple language AST can be created either by parser or by hand, it's up to implementer to decide how to create AST This package provides few examples of AST creation mostly by parsing JSON - ast_sugar.go - ast_human_friendly.go - ast_description_of_best_result Much more advance parser is also possible, but it's not implemented here

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