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GHC 10.0.0.20260917 · lts/ghc-10.0.x · 77a8662 · 2026-10-31

Modulexml-types-0.3.8Haskell2010

Data.XML.Types

Basic types for representing XML.

The idea is to have a full set of appropriate types, which various XML libraries can share. Instead of having equivalent-but-incompatible types for every binding, parser, or client, they all share the same types can can thus interoperate easily.

This library contains complete types for most parts of an XML document, including the prologue, node tree, and doctype. Some basic combinators are included for common tasks, including traversing the node tree and filtering children.

Contents
  1. Types
  2. Document prologue
  3. Document body
  4. Doctypes
  5. Incremental processing
  6. Combinators
  7. Filters
  8. Element traversal
  9. Node traversal
  10. Attributes
Synopsis

Types

Document prologue

datadata Document
#

Constructors

Instances7Eq, Data, Ord, Show, Generic, NFData, …
datadata Prologue
#

Constructors

Instances7Eq, Data, Ord, Show, Generic, NFData, …
datadata Instruction
#

Constructors

Instances7Eq, Data, Ord, Show, Generic, NFData, …
datadata Miscellaneous
#

Constructors

Instances7Eq, Data, Ord, Show, Generic, NFData, …

Document body

datadata Node
#

Constructors

Instances8Eq, Data, Ord, Show, IsString, Generic, …
datadata Element
#

Constructors

Instances7Eq, Data, Ord, Show, Generic, NFData, …
datadata Content
#

Constructors

Instances8Eq, Data, Ord, Show, IsString, Generic, …
datadata Name
Source#

A fully qualified name.

Prefixes are not semantically important; they are included only to simplify pass-through parsing. When comparing names with Eq or Ord methods, prefixes are ignored.

The IsString instance supports Clark notation; see http://www.jclark.com/xml/xmlns.htm and http://infohost.nmt.edu/tcc/help/pubs/pylxml/etree-QName.html. Use the OverloadedStrings language extension for very simple Name construction:

myname :: Name
myname = "{http://example.com/ns/my-namespace}my-name"

Constructors

Instances8Eq, Data, Ord, Show, IsString, Generic, …

Doctypes

datadata Doctype
Source#

Note: due to the incredible complexity of DTDs, this type only supports external subsets. I've tried adding internal subset types, but they quickly gain more code than the rest of this module put together.

It is possible that some future version of this library might support internal subsets, but I am no longer actively working on adding them.

Constructors

Instances7Eq, Data, Ord, Show, Generic, NFData, …
datadata ExternalID
#

Constructors

Instances7Eq, Data, Ord, Show, Generic, NFData, …

Incremental processing

datadata Event
Source#

Some XML processing tools are incremental, and work in terms of events rather than node trees. The Event type allows a document to be fully specified as a sequence of events.

Event-based XML libraries include:

Constructors

Instances7Eq, Data, Ord, Show, Generic, NFData, …

Combinators

Filters

Element traversal

Node traversal

Attributes