scala.tools.nsc.io.Lexer

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

Instance Constructors

new Lexer(rd: Reader)

rd
the reader from which characters are read.

Value Members

final def !=(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def !=(arg0: Any): Boolean

Definition Classes
Any
final def ##(): Int

Definition Classes
AnyRef → Any
final def ==(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def ==(arg0: Any): Boolean

Definition Classes
Any
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.

Exceptions thrown
MalformedInput
if the the current token token is not a delimiter, or consists of a character different from c.
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.
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
final def asInstanceOf[T0]: T0

Definition Classes
Any
var ch: Char

The last-read character
def clone(): AnyRef

Attributes
protected[lang]
Definition Classes
AnyRef
Annotations
@throws()
final def eq(arg0: AnyRef): Boolean

Definition Classes
AnyRef
def equals(arg0: Any): Boolean

Definition Classes
AnyRef → Any
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
def finalize(): Unit

Attributes
protected[lang]
Definition Classes
AnyRef
Annotations
@throws()
final def getClass(): java.lang.Class[_]

Definition Classes
AnyRef → Any
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.
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.
def hashCode(): Int

Definition Classes
AnyRef → Any
final def isInstanceOf[T0]: Boolean

Definition Classes
Any
final def ne(arg0: AnyRef): Boolean

Definition Classes
AnyRef
def nextChar(): Unit

Reads next character into ch
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
final def notify(): Unit

Definition Classes
AnyRef
final def notifyAll(): Unit

Definition Classes
AnyRef
var pos: Long

The number of characters read so far
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
def toString(): String

Definition Classes
AnyRef → Any
var token: Token

The last-read token
var tokenPos: Long

The number of characters read before the start of the last-read token
final def wait(): Unit

Definition Classes
AnyRef
Annotations
@throws()
final def wait(arg0: Long, arg1: Int): Unit

Definition Classes
AnyRef
Annotations
@throws()
final def wait(arg0: Long): Unit

Definition Classes
AnyRef
Annotations
@throws()

Lexer

class Lexer extends AnyRef

Instance Constructors

new Lexer(rd: Reader)

Value Members

final def !=(arg0: AnyRef): Boolean

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: AnyRef): Boolean

final def ==(arg0: Any): Boolean

def accept(ch: Char): Unit

def accept(t: Token): Unit

def acceptChar(c: Char): Unit

final def asInstanceOf[T0]: T0

var ch: Char

def clone(): AnyRef

final def eq(arg0: AnyRef): Boolean

def equals(arg0: Any): Boolean

def error(msg: String): Nothing

def finalize(): Unit

final def getClass(): java.lang.Class[_]

def getNumber(): Unit

def getString(): Unit

def hashCode(): Int

final def isInstanceOf[T0]: Boolean

final def ne(arg0: AnyRef): Boolean

def nextChar(): Unit

def nextToken(): Unit

final def notify(): Unit

final def notifyAll(): Unit

var pos: Long

final def synchronized[T0](arg0: ⇒ T0): T0

def toString(): String

var token: Token

var tokenPos: Long

final def wait(): Unit

final def wait(arg0: Long, arg1: Int): Unit

final def wait(arg0: Long): Unit

Inherited from AnyRef

Inherited from Any