The Book

Class: Lit

Base~ Lit

Represents a literal symbol.

<abstract> new Lit(name)

Creates a literal symbol; should only be used by factory method. Extracts value from representation.

Parameters:
Name Type Description
name string

(quoted) representation for the literal. Empty string is reserved for $eof, the end of input.
Properties:
Name Type Argument Description
value string

(unquoted) value for the literal; empty string for $eof, too.
screened boolean <optional>

set true only during scanner construction if literal value matches a token pattern.
prec Object

precedence.

Properties
Name Type Argument Description
assoc string <optional>

associativity, '%left', '%right', or '%nonassoc', if any.
level number <optional>

precedence level, from 0, if any.
used boolean

true if used in a grammar.
name string

name for a token, representation for a literal.
Source:

Extends

Methods

dump()

Displays description and precedence, if any.

Inherited From:
Overrides:
Source:
Returns:
Type
string

toString()

Displays representation of a literal or $eof.

Source:
Returns:
Type
string

unescape(s)

Removes leading and trailing delimiter character and elaboarates backslash escapes.

Parameters:
Name Type Description
s string

string to unescape.
Source:
Returns:

unquoted, unescaped string.

Type
string