Lexer

Parse and operate on GraphQL language source files.

Index

Constructors

• constructor

Properties

• lastToken
• line
• lineStart
• source
• token

Accessors

• [toStringTag]

Methods

• advance
• lookahead

Constructors

constructor

• new Lexer(source: Source): Lexer

• Parameters

  • source: Source

  Returns Lexer

Properties

lastToken

lastToken: Token

The previously focused non-ignored token.

line

line: number

The (1-indexed) line containing the current token.

lineStart

lineStart: number

The character offset at which the current line begins.

source

source: Source

token

token: Token

The currently focused non-ignored token.

Accessors

[toStringTag]

• get [toStringTag](): string

• Returns string

Methods

advance

• advance(): Token

• Advances the token stream to the next non-ignored token.

  ---

  Returns Token

lookahead

• lookahead(): Token

• Looks ahead and returns the next non-ignored token, but does not change the state of Lexer.

  ---

  Returns Token