callable

package

v0.2.0 Latest Latest Go to latest Published: May 31, 2023 License: EUPL-1.2 Imports: 6 Imported by: 1

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Repository

codeberg.org/t73fde/sxpf

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Documentation ¶

Overview ¶

Package callable provides syntaxes and builtins to work with callables / functions / procedure.

Index ¶

func Apply(eng *eval.Engine, env sxpf.Environment, args []sxpf.Object) (sxpf.Object, error)
func CallableP(args []sxpf.Object) (sxpf.Object, error)
func Fold(eng *eval.Engine, env sxpf.Environment, args []sxpf.Object) (sxpf.Object, error)
func FoldReverse(eng *eval.Engine, env sxpf.Environment, args []sxpf.Object) (sxpf.Object, error)
func GetParameterSymbol(params []*sxpf.Symbol, obj sxpf.Object) (*sxpf.Symbol, error)
func LambdaS(eng *eval.Engine, env sxpf.Environment, args *sxpf.List) (eval.Expr, error)
func Map(eng *eval.Engine, env sxpf.Environment, args []sxpf.Object) (sxpf.Object, error)
func ParseProcedure(eng *eval.Engine, env sxpf.Environment, name string, ...) (eval.Expr, error)
type LambdaExpr
- func (le *LambdaExpr) Compute(eng *eval.Engine, env sxpf.Environment) (sxpf.Object, error)
type Procedure

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

func Apply ¶

func Apply(eng *eval.Engine, env sxpf.Environment, args []sxpf.Object) (sxpf.Object, error)

Apply calls the given function with the given arguments.

func CallableP ¶

func CallableP(args []sxpf.Object) (sxpf.Object, error)

CallableP returns True, if the given argument is a callable.

func Fold ¶

func Fold(eng *eval.Engine, env sxpf.Environment, args []sxpf.Object) (sxpf.Object, error)

Fold will apply the given function pairwise to list of args.

func FoldReverse ¶

func FoldReverse(eng *eval.Engine, env sxpf.Environment, args []sxpf.Object) (sxpf.Object, error)

FoldReverse will apply the given function reversed pairwise to reversed list of args.

func GetParameterSymbol ¶

func GetParameterSymbol(params []*sxpf.Symbol, obj sxpf.Object) (*sxpf.Symbol, error)

func LambdaS ¶

func LambdaS(eng *eval.Engine, env sxpf.Environment, args *sxpf.List) (eval.Expr, error)

LambdaS parses a procedure specification.

func Map ¶

func Map(eng *eval.Engine, env sxpf.Environment, args []sxpf.Object) (sxpf.Object, error)

Map returns a list, where all member are the result of the given function to all original list members.

func ParseProcedure ¶

func ParseProcedure(eng *eval.Engine, env sxpf.Environment, name string, paramSpec, bodySpec sxpf.Object) (eval.Expr, error)

ParseProcedure parses a procedure definition, where some parsing is already done.

Types ¶

type LambdaExpr ¶

type LambdaExpr struct {
	Name   string
	Params []*sxpf.Symbol
	Rest   *sxpf.Symbol
	Front  []eval.Expr // all expressions, but the last
	Last   eval.Expr
}

func (*LambdaExpr) Compute ¶

func (le *LambdaExpr) Compute(eng *eval.Engine, env sxpf.Environment) (sxpf.Object, error)

type Procedure ¶

type Procedure struct {
	Env    sxpf.Environment
	Name   string
	Params []*sxpf.Symbol
	Rest   *sxpf.Symbol
	Front  []eval.Expr // all expressions, but the last
	Last   eval.Expr
}

Procedure represents the procedure definition form (aka lambda).

func (*Procedure) Call ¶

func (p *Procedure) Call(eng *eval.Engine, _ sxpf.Environment, args []sxpf.Object) (sxpf.Object, error)

func (*Procedure) IsAtom ¶

func (p *Procedure) IsAtom() bool

func (*Procedure) IsEql ¶

func (p *Procedure) IsEql(other sxpf.Object) bool

func (*Procedure) IsEqual ¶

func (p *Procedure) IsEqual(other sxpf.Object) bool

func (*Procedure) IsNil ¶

func (p *Procedure) IsNil() bool

func (*Procedure) Print ¶

func (p *Procedure) Print(w io.Writer) (int, error)

func (*Procedure) Repr ¶

func (p *Procedure) Repr() string

func (*Procedure) String ¶

func (p *Procedure) String() string

Source Files ¶

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