class Lexer extends AnyRef

A simple lexer for tokens as they are used in JSON, plus parens (, ) Tokens understood are:

(, ), [, ], {, }, :, ,, true, false, null, strings (syntax as in JSON), integer numbers (syntax as in JSON: -?(0|\d+) floating point numbers (syntax as in JSON: -?(0|\d+)(\.\d+)?((e|E)(+|-)?\d+)?) The end of input is represented as its own token, EOF. Lexers can keep one token lookahead

Source
Lexer.scala
Linear Supertypes
AnyRef, Any
Type Hierarchy
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. Lexer
  2. AnyRef
  3. Any
Implicitly
  1. by any2stringadd
  2. by StringFormat
  3. by Ensuring
  4. by ArrowAssoc
  1. Hide All
  2. Show All
Visibility
  1. Public
  2. All

Instance Constructors

  1. new Lexer(rd: Reader)

    rd

    the reader from which characters are read.

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. def +(other: String): String
    Implicit
    This member is added by an implicit conversion from Lexer to any2stringadd[Lexer] performed by method any2stringadd in scala.Predef.
    Definition Classes
    any2stringadd
  4. def ->[B](y: B): (Lexer, B)
    Implicit
    This member is added by an implicit conversion from Lexer to ArrowAssoc[Lexer] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()
  5. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  6. def accept(ch: Char): Unit

    The current token is a delimiter consisting of given character, reads next token, otherwise raises an error.

    The current token is a delimiter consisting of given character, reads next token, otherwise raises an error.

    ch

    the given delimiter character to compare current token with

    Exceptions thrown

    MalformedInput if the current token token is not a delimiter, or consists of a character different from c.

  7. def accept(t: Token): Unit

    If current token equals given token, reads next token, otherwise raises an error.

    If current token equals given token, reads next token, otherwise raises an error.

    t

    the given token to compare current token with

    Exceptions thrown

    MalformedInput if the two tokens do not match.

  8. def acceptChar(c: Char): Unit

    If last-read character equals given character, reads next character, otherwise raises an error

    If last-read character equals given character, reads next character, otherwise raises an error

    c

    the given character to compare with last-read character

    Exceptions thrown

    MalformedInput if character does not match

  9. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  10. var ch: Char

    The last-read character

  11. def clone(): AnyRef
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  12. def ensuring(cond: (Lexer) ⇒ Boolean, msg: ⇒ Any): Lexer
    Implicit
    This member is added by an implicit conversion from Lexer to Ensuring[Lexer] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  13. def ensuring(cond: (Lexer) ⇒ Boolean): Lexer
    Implicit
    This member is added by an implicit conversion from Lexer to Ensuring[Lexer] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  14. def ensuring(cond: Boolean, msg: ⇒ Any): Lexer
    Implicit
    This member is added by an implicit conversion from Lexer to Ensuring[Lexer] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  15. def ensuring(cond: Boolean): Lexer
    Implicit
    This member is added by an implicit conversion from Lexer to Ensuring[Lexer] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  16. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  17. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  18. def error(msg: String): Nothing

    Always throws a MalformedInput exception with given error message.

    Always throws a MalformedInput exception with given error message.

    msg

    the error message

  19. def finalize(): Unit
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  20. def formatted(fmtstr: String): String
    Implicit
    This member is added by an implicit conversion from Lexer to StringFormat[Lexer] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @inline()
  21. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
  22. def getNumber(): Unit

    Reads a numeric literal, and forms an IntLit or FloatLit token from it.

    Reads a numeric literal, and forms an IntLit or FloatLit token from it. Last-read input character ch must be either - or a digit.

    Exceptions thrown

    MalformedInput if lexeme not recognized as a numeric literal.

  23. def getString(): Unit

    Reads a string literal, and forms a StringLit token from it.

    Reads a string literal, and forms a StringLit token from it. Last-read input character ch must be opening "-quote.

    Exceptions thrown

    MalformedInput if lexeme not recognized as a string literal.

  24. def hashCode(): Int
    Definition Classes
    AnyRef → Any
  25. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  26. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  27. def nextChar(): Unit

    Reads next character into ch

  28. def nextToken(): Unit

    Skips whitespace and reads next lexeme into token

    Skips whitespace and reads next lexeme into token

    Exceptions thrown

    MalformedInput if lexeme not recognized as a valid token

  29. final def notify(): Unit
    Definition Classes
    AnyRef
  30. final def notifyAll(): Unit
    Definition Classes
    AnyRef
  31. var pos: Long

    The number of characters read so far

  32. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  33. def toString(): String
    Definition Classes
    AnyRef → Any
  34. var token: Token

    The last-read token

  35. var tokenPos: Long

    The number of characters read before the start of the last-read token

  36. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  37. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  38. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  39. def →[B](y: B): (Lexer, B)
    Implicit
    This member is added by an implicit conversion from Lexer to ArrowAssoc[Lexer] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion any2stringadd from Lexer to any2stringadd[Lexer]

Inherited by implicit conversion StringFormat from Lexer to StringFormat[Lexer]

Inherited by implicit conversion Ensuring from Lexer to Ensuring[Lexer]

Inherited by implicit conversion ArrowAssoc from Lexer to ArrowAssoc[Lexer]

Ungrouped