Packages

  • package root
    Definition Classes
    root
  • package parsley
    Definition Classes
    root
  • package token

    This package provides a wealth of functionality for performing common lexing tasks.

    This package provides a wealth of functionality for performing common lexing tasks.

    It is organised as follows:

    • the main parsing functionality is accessed via Lexer, which provides implementations for the combinators found in the sub-packages given a LexicalDesc.
    • the descriptions sub-package is how a lexical structure can be described, providing the configuration that alters the behaviour of the parsers produced by the Lexer.
    • the other sub-packages contain the high-level interfaces that the Lexer exposes, which can be used to pass whitespace-aware and non-whitespace-aware combinators around in a uniform way.
    • the predicate module contains functionality to help define boolean predicates on characters or unicode codepoints.
    Definition Classes
    parsley
  • package text

    This package contains the abstract parsers for parsing string and character literals.

    This package contains the abstract parsers for parsing string and character literals.

    Definition Classes
    token
    Since

    4.0.0

  • Character
  • String
c

parsley.token.text

Character

abstract class Character extends AnyRef

This class defines a uniform interface for defining parsers for character literals, independent of how whitespace should be handled after the literal.

Source
Character.scala
Since

4.0.0

Note

implementations of this class found within Lexer may employ sharing and refine the defs in this class into val or lazy val when overriding.

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Abstract Value Members

  1. abstract def ascii: Parsley[Char]

    This parser will parse a single character literal, which may contain any graphic ASCII character.

    This parser will parse a single character literal, which may contain any graphic ASCII character. These are characters with ordinals in range 0 to 127 inclusive. It may also contain escape sequences, but only those which result in ASCII characters.

    Example: 

    1. scala> ascii.parse("'a'")
val res0 = Success('a')
scala> ascii.parse("'£'")
val res1 = Failure(...) // £'s ordinal is not less than 127
scala> ascii.parse("'λ'")
val res2 = Failure(...) // λ's ordinal is not less than 127
scala> ascii.parse("'🙂'")
val res3 = Failure(...) // 🙂's ordinal is not less than 127
    Since

    4.0.0

    Note

    the exact behaviour of this parser is decided by the implementations given in Lexer, which will depend on user-defined configuration. Please see the relevant documentation of these specific objects.

  2. abstract def basicMultilingualPlane: Parsley[Char]

    This parser will parse a single character literal, which may contain any graphic character that falls within the "Basic Multilingual Plane" (BMP).

    This parser will parse a single character literal, which may contain any graphic character that falls within the "Basic Multilingual Plane" (BMP). This is defined as any UTF-16 character that fits into 16 bits. A Scala Char is exactly large enough to hold any BMP character. It may also contain escape sequences, but only those which result in BMP characters.

    Example: 

    1. scala> basicMultilingualPlane.parse("'a'")
val res0 = Success('a')
scala> basicMultilingualPlane.parse("'£'")
val res1 = Success('£')
scala> basicMultilingualPlane.parse("'λ'")
val res2 = Success('λ')
scala> basicMultilingualPlane.parse("'🙂'")
val res3 = Failure(...) // 🙂 has a 32-bit codepoint of larger than 0xffff
    Since

    4.0.0

    Note

    the exact behaviour of this parser is decided by the implementations given in Lexer, which will depend on user-defined configuration. Please see the relevant documentation of these specific objects.

  3. abstract def fullUtf16: Parsley[Int]

    This parser will parse a single character literal, which may contain any unicode graphic character as defined by up to two UTF-16 codepoints.

    This parser will parse a single character literal, which may contain any unicode graphic character as defined by up to two UTF-16 codepoints. It may also contain escape sequences.

    Example: 

    1. scala> fullUtf16.parse("'a'")
val res0 = Success(97)
scala> fullUtf16.parse("'£'")
val res1 = Success(163)
scala> fullUtf16.parse("'λ'")
val res2 = Success(0x03BB)
scala> fullUtf16.parse("'🙂'")
val res3 = Success(0x1F642)
    Since

    4.0.0

    Note

    the exact behaviour of this parser is decided by the implementations given in Lexer, which will depend on user-defined configuration. Please see the relevant documentation of these specific objects.

  4. abstract def latin1: Parsley[Char]

    This parser will parse a single character literal, which may contain any graphic extended ASCII character.

    This parser will parse a single character literal, which may contain any graphic extended ASCII character. These are characters with ordinals in range 0 to 255 inclusive. It may also contain escape sequences, but only those which result in extended ASCII characters.

    Example: 

    1. scala> latin1.parse("'a'")
val res0 = Success('a')
scala> latin1.parse("'£'")
val res1 = Success('£')
scala> latin1.parse("'λ'")
val res2 = Failure(...) // λ's ordinal is not less than 255
scala> latin1.parse("'🙂'")
val res3 = Failure(...) // 🙂's ordinal is not less than 255
    Since

    4.0.0

    Note

    the exact behaviour of this parser is decided by the implementations given in Lexer, which will depend on user-defined configuration. Please see the relevant documentation of these specific objects.

Concrete Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
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  2. final def ##(): Int
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  3. final def ==(arg0: Any): Boolean
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  5. def clone(): AnyRef
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  6. final def eq(arg0: AnyRef): Boolean
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  7. def equals(arg0: Any): Boolean
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  8. def finalize(): Unit
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  10. def hashCode(): Int
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  11. final def isInstanceOf[T0]: Boolean
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  12. final def ne(arg0: AnyRef): Boolean
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  13. final def notify(): Unit
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  14. final def notifyAll(): Unit
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  15. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
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  16. def toString(): java.lang.String
    Definition Classes
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  17. final def wait(): Unit
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  18. final def wait(arg0: Long, arg1: Int): Unit
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