Class DefaultLexerErrorMessageProvider

Implements

ILexerErrorMessageProvider

Index

Constructors

Methods

buildUnableToPopLexerModeMessage buildUnexpectedCharactersMessage

Constructors

constructor

new DefaultLexerErrorMessageProvider(): DefaultLexerErrorMessageProvider
Returns DefaultLexerErrorMessageProvider

Methods

buildUnableToPopLexerModeMessage

buildUnableToPopLexerModeMessage(token: IToken): string
Unable To Pop Lexer Mode Error happens when lexer tries to pop the last remaining mode from the mode stack so that there is no longer any active lexer mode This error only relevant for multi-mode lexers
Parameters
- token: IToken
  The Token that requested pop mode.
Returns string
Implementation of ILexerErrorMessageProvider.buildUnableToPopLexerModeMessage
- Defined in packages/langium/src/parser/lexer.ts:18

buildUnexpectedCharactersMessage

buildUnexpectedCharactersMessage(
    fullText: string,
    startOffset: number,
    length: number,
    line?: number,
    column?: number,
): string
An Unexpected Character Error occurs when the lexer is unable to match a range of one or more characters in the input text against any of the Token Types in it's Lexer definition
Parameters
- fullText: string
  Full original input text.
- startOffset: number
  Offset in input text where error starts.
- length: number
  Error length.
- Optionalline: number
  Line number where the error occurred. (optional) Will not be provided when lexer is not defined to track lines/columns
- Optionalcolumn: number
  Column number where the error occurred. (optional) Will not be provided when lexer is not defined to track lines/columns
Returns string
Implementation of ILexerErrorMessageProvider.buildUnexpectedCharactersMessage
- Defined in packages/langium/src/parser/lexer.ts:14