expression

Documentation

Index

• func ExtractExpressions(value string) ([]Span, []Error)
• type Error
  • func Parse(input string) []Error
• type Span
• type Token
• type TokenKind
  • func (k TokenKind) String() string

Functions

func ExtractExpressions

func ExtractExpressions(value string) ([]Span, []Error)

ExtractExpressions finds all ${{ ... }} expression spans in the given value. It returns the spans and any extraction-level errors (e.g. unterminated expressions).

Types

type Error

type Error struct {
	Offset  int
	Message string
}

Error represents a syntax error at a specific offset within an expression.

func Parse

func Parse(input string) []Error

Parse parses a GitHub Actions expression (the content between ${{ and }}). It returns any syntax errors found. A nil return means the expression is valid.

type Span

type Span struct {
	Start int
	End   int
	Inner string
}

Span represents a single ${{ ... }} expression found in a string value.

type Token

type Token struct {
	Kind   TokenKind
	Value  string
	Offset int
}

type TokenKind

type TokenKind int

const (
	TokenEOF TokenKind = iota
	TokenIdent
	TokenInt
	TokenFloat
	TokenString
	TokenTrue
	TokenFalse
	TokenNull
	TokenLParen
	TokenRParen
	TokenLBracket
	TokenRBracket
	TokenDot
	TokenStar
	TokenNot
	TokenLT
	TokenLE
	TokenGT
	TokenGE
	TokenEQ
	TokenNE
	TokenAnd
	TokenOr
	TokenComma
)

func (TokenKind) String

func (k TokenKind) String() string