token

package
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Published: Sep 6, 2024 License: MIT Imports: 1 Imported by: 3

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Constants

View Source
const (
	AT      = "@"
	EQUAL   = "="
	PLUS    = "+"
	PERCENT = "%"
	SLASH   = "/"
	DOT     = "."
	DASH    = "-"

	EM           = "EM"
	MILLISECONDS = "MILLISECONDS"
	MINUTES      = "MINUTES"
	PX           = "PX"
	SECONDS      = "SECONDS"

	EOF     = "EOF"
	ILLEGAL = "ILLEGAL"

	ALT       = "ALT"
	BACKSPACE = "BACKSPACE"
	CTRL      = "CTRL"
	DELETE    = "DELETE"
	END       = "END"
	ENTER     = "ENTER"
	ESCAPE    = "ESCAPE"
	HOME      = "HOME"
	INSERT    = "INSERT"
	PAGEDOWN  = "PAGEDOWN"
	PAGEUP    = "PAGEUP"
	SLEEP     = "SLEEP"
	SPACE     = "SPACE"
	TAB       = "TAB"
	SHIFT     = "SHIFT"

	COMMENT = "COMMENT"
	NUMBER  = "NUMBER"
	STRING  = "STRING"
	JSON    = "JSON"
	BOOLEAN = "BOOLEAN"

	DOWN  = "DOWN"
	LEFT  = "LEFT"
	RIGHT = "RIGHT"
	UP    = "UP"

	HIDE            = "HIDE"
	OUTPUT          = "OUTPUT"
	REQUIRE         = "REQUIRE"
	SET             = "SET"
	SHOW            = "SHOW"
	SOURCE          = "SOURCE"
	TYPE            = "TYPE"
	SCREENSHOT      = "SCREENSHOT"
	COPY            = "COPY"
	PASTE           = "PASTE"
	SHELL           = "SHELL"
	ENV             = "ENV"
	FONT_FAMILY     = "FONT_FAMILY" //nolint:revive
	FONT_SIZE       = "FONT_SIZE"   //nolint:revive
	FRAMERATE       = "FRAMERATE"
	PLAYBACK_SPEED  = "PLAYBACK_SPEED" //nolint:revive
	HEIGHT          = "HEIGHT"
	WIDTH           = "WIDTH"
	LETTER_SPACING  = "LETTER_SPACING" //nolint:revive
	LINE_HEIGHT     = "LINE_HEIGHT"    //nolint:revive
	TYPING_SPEED    = "TYPING_SPEED"   //nolint:revive
	PADDING         = "PADDING"
	THEME           = "THEME"
	LOOP_OFFSET     = "LOOP_OFFSET"     //nolint:revive
	MARGIN_FILL     = "MARGIN_FILL"     //nolint:revive
	MARGIN          = "MARGIN"          //nolint:revive
	WINDOW_BAR      = "WINDOW_BAR"      //nolint:revive
	WINDOW_BAR_SIZE = "WINDOW_BAR_SIZE" //nolint:revive
	BORDER_RADIUS   = "CORNER_RADIUS"   //nolint:revive
	CURSOR_BLINK    = "CURSOR_BLINK"    //nolint:revive
)

Tokens for the VHS language

Variables

View Source
var Keywords = map[string]Type{
	"em":            EM,
	"px":            PX,
	"ms":            MILLISECONDS,
	"s":             SECONDS,
	"m":             MINUTES,
	"Set":           SET,
	"Sleep":         SLEEP,
	"Type":          TYPE,
	"Enter":         ENTER,
	"Space":         SPACE,
	"Backspace":     BACKSPACE,
	"Delete":        DELETE,
	"Insert":        INSERT,
	"Ctrl":          CTRL,
	"Alt":           ALT,
	"Shift":         SHIFT,
	"Down":          DOWN,
	"Left":          LEFT,
	"Right":         RIGHT,
	"Up":            UP,
	"PageUp":        PAGEUP,
	"PageDown":      PAGEDOWN,
	"Tab":           TAB,
	"Escape":        ESCAPE,
	"End":           END,
	"Hide":          HIDE,
	"Require":       REQUIRE,
	"Show":          SHOW,
	"Output":        OUTPUT,
	"Shell":         SHELL,
	"FontFamily":    FONT_FAMILY,
	"MarginFill":    MARGIN_FILL,
	"Margin":        MARGIN,
	"WindowBar":     WINDOW_BAR,
	"WindowBarSize": WINDOW_BAR_SIZE,
	"BorderRadius":  BORDER_RADIUS,
	"FontSize":      FONT_SIZE,
	"Framerate":     FRAMERATE,
	"Height":        HEIGHT,
	"LetterSpacing": LETTER_SPACING,
	"LineHeight":    LINE_HEIGHT,
	"PlaybackSpeed": PLAYBACK_SPEED,
	"TypingSpeed":   TYPING_SPEED,
	"Padding":       PADDING,
	"Theme":         THEME,
	"Width":         WIDTH,
	"LoopOffset":    LOOP_OFFSET,
	"Source":        SOURCE,
	"CursorBlink":   CURSOR_BLINK,
	"true":          BOOLEAN,
	"false":         BOOLEAN,
	"Screenshot":    SCREENSHOT,
	"Copy":          COPY,
	"Paste":         PASTE,
	"Env":           ENV,
}

Keywords maps keyword strings to tokens.

Functions

func IsCommand

func IsCommand(t Type) bool

IsCommand returns whether the string is a command.

func IsModifier

func IsModifier(t Type) bool

IsModifier returns whether the token is a modifier.

func IsSetting

func IsSetting(t Type) bool

IsSetting returns whether a token is a setting.

Types

type Token

type Token struct {
	Type    Type
	Literal string
	Line    int
	Column  int
}

Token represents a lexer token.

type Type

type Type string

Type represents a token's type.

func LookupIdentifier

func LookupIdentifier(ident string) Type

LookupIdentifier returns whether the identifier is a keyword. In `vhs`, there are no _actual_ identifiers, i.e. there are no variables. Instead, identifiers are simply strings (i.e. bare words).

func (Type) String

func (t Type) String() string

String converts a token to it's human readable string format.

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