value

Documentation

Overview

Helper functions for doing value conversions.

Index

• func AsString(x starlark.Value) (string, bool)
• func SequenceToStringSlice(seq starlark.Sequence) ([]string, error)
• func StringSliceToList(slice []string) *starlark.List
• func ValueGroupToCmdHelper(cmdVal, cmdBatVal starlark.Value) (model.Cmd, error)
• func ValueOrSequenceToSlice(v starlark.Value) []starlark.Value
• func ValueToAbsPath(thread *starlark.Thread, v starlark.Value) (string, error)
• func ValueToBatCmd(v starlark.Value) (model.Cmd, error)
• func ValueToHostCmd(v starlark.Value) (model.Cmd, error)
• func ValueToUnixCmd(v starlark.Value) (model.Cmd, error)
• type Duration
  • func (d Duration) AsDuration() time.Duration
  • func (d Duration) IsZero() bool
  • func (d *Duration) Unpack(v starlark.Value) error
• type ImplicitStringer
• type LocalPath
  • func NewLocalPathUnpacker(t *starlark.Thread) LocalPath
  • func (p *LocalPath) Unpack(v starlark.Value) error
• type PathMaker
• type StringOrStringList
  • func (s *StringOrStringList) Unpack(v starlark.Value) error
• type StringStringMap
  • func (s *StringStringMap) AsMap() map[string]string
  • func (s *StringStringMap) Unpack(v starlark.Value) error
• type Stringable
  • func (s *Stringable) Unpack(v starlark.Value) error

Functions

func AsString

func AsString(x starlark.Value) (string, bool)

Wrapper around starlark.AsString

func SequenceToStringSlice

func SequenceToStringSlice(seq starlark.Sequence) ([]string, error)

func StringSliceToList

func StringSliceToList(slice []string) *starlark.List

func ValueGroupToCmdHelper

func ValueGroupToCmdHelper(cmdVal, cmdBatVal starlark.Value) (model.Cmd, error)

In other similar build systems (Buck and Bazel), there's a "main" command, and then various per-platform overrides. https://docs.bazel.build/versions/master/be/general.html#genrule.cmd_bat This helper function abstracts out the precedence rules.

func ValueOrSequenceToSlice

func ValueOrSequenceToSlice(v starlark.Value) []starlark.Value

If `v` is a `starlark.Sequence`, return a slice of its elements Otherwise, return it as a single-element slice For functions that take `Union[List[T], T]`

func ValueToAbsPath

func ValueToAbsPath(thread *starlark.Thread, v starlark.Value) (string, error)

func ValueToBatCmd

func ValueToBatCmd(v starlark.Value) (model.Cmd, error)

func ValueToHostCmd

func ValueToHostCmd(v starlark.Value) (model.Cmd, error)

provides dockerfile-style behavior of: a string gets interpreted as a shell command (like, sh -c 'foo bar $X') an array of strings gets interpreted as a raw argv to exec

func ValueToUnixCmd

func ValueToUnixCmd(v starlark.Value) (model.Cmd, error)

Types

type Duration

type Duration time.Duration

Parse duration constants from starlark.

func (Duration) AsDuration

func (d Duration) AsDuration() time.Duration

func (Duration) IsZero

func (d Duration) IsZero() bool

func (*Duration) Unpack

func (d *Duration) Unpack(v starlark.Value) error

type ImplicitStringer

type ImplicitStringer interface {
	ImplicitString() string
}

type LocalPath

type LocalPath struct {
	Value string
	// contains filtered or unexported fields
}

func NewLocalPathUnpacker

func NewLocalPathUnpacker(t *starlark.Thread) LocalPath

func (*LocalPath) Unpack

func (p *LocalPath) Unpack(v starlark.Value) error

type PathMaker

type PathMaker interface {
	MakeLocalPath(relPath string) string
}

type StringOrStringList

type StringOrStringList struct {
	Values []string
}

func (*StringOrStringList) Unpack

func (s *StringOrStringList) Unpack(v starlark.Value) error

Unpack an argument that can either be expressed as a string or as a list of strings.

type StringStringMap

type StringStringMap map[string]string

func (*StringStringMap) AsMap

func (s *StringStringMap) AsMap() map[string]string

func (*StringStringMap) Unpack

func (s *StringStringMap) Unpack(v starlark.Value) error

type Stringable

type Stringable struct {
	Value string
}

func (*Stringable) Unpack

func (s *Stringable) Unpack(v starlark.Value) error