Language binding
In programming and software design, a binding is an application programming interface (API) that provides glue code specifically made to allow a programming language to use a foreign library or operating system service (one that is not native to that language).
Characteristics
[edit | edit source]Binding generally refers to a mapping of one thing to another. In the context of software libraries, bindings are wrapper libraries that bridge two programming languages, so that a library written for one language can be used in another language.[1] Many software libraries are written in system programming languages such as C or C++. To use such libraries from another language, usually of higher-level, such as Java, Common Lisp, Scheme, Python, or Lua, a binding to the library must be created in that language, possibly requiring recompiling the language's code, depending on the amount of modification needed.[2] However, most languages offer a foreign function interface, such as Python's and OCaml's ctypes, and Embeddable Common Lisp's cffi and uffi.[3][4][5]
For example, Python bindings are used when an extant C library, written for some purpose, is to be used from Python. Another example is libsvn which is written in C to provide an API to access the Subversion software repository. To access Subversion from within Java code, libsvnjavahl can be used, which depends on libsvn being installed and acts as a bridge between the language Java and libsvn, thus providing an API that invokes functions from libsvn to do the work.[6]
Major motives to create library bindings include software reuse, to reduce reimplementing a library in several languages, and the difficulty of implementing some algorithms efficiently in some high-level languages.
Runtime environment
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Object models
[edit | edit source]- Common Object Request Broker Architecture (CORBA) – cross-platform-language model
- Component Object Model (COM) – Microsoft Windows only cross-language model
- Distributed Component Object Model (DCOM) – extension enabling COM to work over networks
- Cross Platform Component Object Model (XPCOM) – Mozilla applications cross-platform model
- Common Language Infrastructure – .NET Framework cross-platform-language model
- Freedesktop.org D-Bus – open cross-platform-language model
| This section needs expansion. You can help by adding to it. (November 2016) |
Virtual machines
[edit | edit source] | This section needs expansion. You can help by adding to it. (November 2016) |
Porting
[edit | edit source]- Portable object – cross-platform-language object model definition
| This section needs expansion. You can help by adding to it. (November 2016) |
See also
[edit | edit source] |
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- Application programming interface (API)
- Application binary interface (ABI)
- Calling convention
- Embedded SQL
- Name mangling
- Simplified Wrapper and Interface Generator (SWIG) – interface binding generator from many languages to many languages, open-source
- Wrapper function
References
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External links
[edit | edit source]- JTC1/SC22/WG11 - Binding Techniques, an ISO standard for language bindings
- What is a language binding?
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