The highest tagged major version is v2.

evaluator

package

v0.0.12 Latest Latest Go to latest Published: Dec 18, 2022 License: MIT Imports: 19 Imported by: 0

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Repository

github.com/cloudcmds/tamarin

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Documentation ¶

Overview ¶

Package evaluator contains the core of our interpreter, which walks the AST produced by the parser and evaluates user code.

Index ¶

func All(ctx context.Context, args ...object.Object) object.Object
func Any(ctx context.Context, args ...object.Object) object.Object
func Assert(ctx context.Context, args ...object.Object) object.Object
func Bool(ctx context.Context, args ...object.Object) object.Object
func Call(ctx context.Context, args ...object.Object) object.Object
func Chr(ctx context.Context, args ...object.Object) object.Object
func Delete(ctx context.Context, args ...object.Object) object.Object
func Err(ctx context.Context, args ...object.Object) object.Object
func Fetch(ctx context.Context, args ...object.Object) object.Object
func Float(ctx context.Context, args ...object.Object) object.Object
func GetAttr(ctx context.Context, args ...object.Object) object.Object
func GlobalBuiltins() []*object.Builtin
func Int(ctx context.Context, args ...object.Object) object.Object
func Keys(ctx context.Context, args ...object.Object) object.Object
func Len(ctx context.Context, args ...object.Object) object.Object
func List(ctx context.Context, args ...object.Object) object.Object
func Match(ctx context.Context, args ...object.Object) object.Object
func Ok(ctx context.Context, args ...object.Object) object.Object
func Ord(ctx context.Context, args ...object.Object) object.Object
func Print(ctx context.Context, args ...object.Object) object.Object
func Printf(ctx context.Context, args ...object.Object) object.Object
func Reversed(ctx context.Context, args ...object.Object) object.Object
func Set(ctx context.Context, args ...object.Object) object.Object
func Sorted(ctx context.Context, args ...object.Object) object.Object
func Sprintf(ctx context.Context, args ...object.Object) object.Object
func String(ctx context.Context, args ...object.Object) object.Object
func Type(ctx context.Context, args ...object.Object) object.Object
func Unwrap(ctx context.Context, args ...object.Object) object.Object
func UnwrapOr(ctx context.Context, args ...object.Object) object.Object
type Evaluator
- func New(opts Opts) *Evaluator
- func (e *Evaluator) Evaluate(ctx context.Context, node ast.Node, s *scope.Scope) object.Object
type Importer
type Opts
type SimpleImporter
- func (si *SimpleImporter) Import(ctx context.Context, e *Evaluator, name string) (*object.Module, error)

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

func All ¶

func All(ctx context.Context, args ...object.Object) object.Object

func Any ¶

func Any(ctx context.Context, args ...object.Object) object.Object

func Assert ¶ added in v0.0.9

func Assert(ctx context.Context, args ...object.Object) object.Object

func Bool ¶

func Bool(ctx context.Context, args ...object.Object) object.Object

func Call ¶ added in v0.0.12

func Call(ctx context.Context, args ...object.Object) object.Object

Call the given function with the provided arguments

func Chr ¶ added in v0.0.12

func Chr(ctx context.Context, args ...object.Object) object.Object

func Delete ¶ added in v0.0.9

func Delete(ctx context.Context, args ...object.Object) object.Object

func Err ¶ added in v0.0.9

func Err(ctx context.Context, args ...object.Object) object.Object

func Fetch ¶ added in v0.0.9

func Fetch(ctx context.Context, args ...object.Object) object.Object

func Float ¶ added in v0.0.12

func Float(ctx context.Context, args ...object.Object) object.Object

func GetAttr ¶ added in v0.0.12

func GetAttr(ctx context.Context, args ...object.Object) object.Object

func GlobalBuiltins ¶ added in v0.0.6

func GlobalBuiltins() []*object.Builtin

func Int ¶ added in v0.0.12

func Int(ctx context.Context, args ...object.Object) object.Object

func Keys ¶ added in v0.0.9

func Keys(ctx context.Context, args ...object.Object) object.Object

func Len ¶ added in v0.0.9

func Len(ctx context.Context, args ...object.Object) object.Object

Len returns the length of a string, list, set, or map

func List ¶ added in v0.0.12

func List(ctx context.Context, args ...object.Object) object.Object

func Match ¶ added in v0.0.9

func Match(ctx context.Context, args ...object.Object) object.Object

regular expression match

func Ok ¶ added in v0.0.9

func Ok(ctx context.Context, args ...object.Object) object.Object

func Ord ¶ added in v0.0.12

func Ord(ctx context.Context, args ...object.Object) object.Object

func Print ¶ added in v0.0.9

func Print(ctx context.Context, args ...object.Object) object.Object

output a string to stdout

func Printf ¶ added in v0.0.9

func Printf(ctx context.Context, args ...object.Object) object.Object

Printf is the implementation of our `printf` function.

func Reversed ¶ added in v0.0.9

func Reversed(ctx context.Context, args ...object.Object) object.Object

func Set ¶ added in v0.0.9

func Set(ctx context.Context, args ...object.Object) object.Object

func Sorted ¶ added in v0.0.9

func Sorted(ctx context.Context, args ...object.Object) object.Object

func Sprintf ¶ added in v0.0.9

func Sprintf(ctx context.Context, args ...object.Object) object.Object

func String ¶ added in v0.0.9

func String(ctx context.Context, args ...object.Object) object.Object

func Type ¶ added in v0.0.9

func Type(ctx context.Context, args ...object.Object) object.Object

func Unwrap ¶ added in v0.0.7

func Unwrap(ctx context.Context, args ...object.Object) object.Object

func UnwrapOr ¶ added in v0.0.7

func UnwrapOr(ctx context.Context, args ...object.Object) object.Object

Types ¶

type Evaluator ¶

type Evaluator struct {
	// contains filtered or unexported fields
}

Evaluator is used to execute Tamarin AST nodes.

func New ¶

func New(opts Opts) *Evaluator

New returns a new Evaluator

func (*Evaluator) Evaluate ¶

func (e *Evaluator) Evaluate(ctx context.Context, node ast.Node, s *scope.Scope) object.Object

Evaluate an AST node. The context can be used to cancel a running evaluation. If evaluation encounters an error, a Tamarin error object is returned.

type Importer ¶

type Importer interface {
	Import(ctx context.Context, e *Evaluator, name string) (*object.Module, error)
}

type Opts ¶

type Opts struct {
	// Importer is used to import Tamarin code modules. If nil, module imports
	// are not supported and an import will result in an error that stops code
	// execution.
	Importer Importer

	// If set to true, the default builtins will not be registered.
	DisableDefaultBuiltins bool

	// Supplies extra and/or override builtins for evaluation.
	Builtins []*object.Builtin
}

Opts configures Tamarin code evaluation.

type SimpleImporter ¶

type SimpleImporter struct{}

func (*SimpleImporter) Import ¶

func (si *SimpleImporter) Import(
	ctx context.Context,
	e *Evaluator,
	name string,
) (*object.Module, error)

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