INTERPRETER
An interpreter is a computer program that directly executes source code written in a high level programming language without compiling it into machine code first.
There are several types of interpreters and they are; line by line interpreters, bytecode interpreters and dynamic interpreters.
Line by line interpreters executes code line by line.
Byte code interpreters execute byte code generated from source code.
Dynamic interpreters allow for dynamic modification of code during execution.
The advantages of interpreters are as follows; interpreters allow for dynamic modification of code. Interpreters enable rapid prototyping and development. Interpreted code can run on any platform with the interpreter.
The disadvantages of interpreters are as follows; interpreters can be slower than compiled code. Interpreters can pose security risks if not properly sand boxed. Code requires the interpreter to be installed.
The application of interpreters is as follows; interpreters are often used for scripting tasks. Interpreters are used for web development for client side scripting. Interpreters are often used in educational setting due to their flexibility.
The future of interpreters is based on the advances and development of the following technologies; interpreters may incorporate JIT compilation for improved performance. Interpreters will continue to play a crucial role in dynamic language ecosystems. Interpreters will continue to improve in terms of optimization techniques. In future interpreters will continue to provide a flexible and dynamic way to execute code enabling rapid development and prototyping.
SOURCES:
- Writing an interpreter in GO by Thorsten Ball.
- Implementing functional languages: A tutorial by Simon Peyton Jones and David Lester.
- Crafting interpreters by Robert Nystrom.
- The art of the interpreter by Peter Norvig.
- Build your own programming language by Clinton L. Jeffrey.
NB: examples of interpreters includes: python interpreter, it executes python code directly. JavaScript interpreter, it executes using the V8 engine the JavaScript code in web browsers and node.js. ruby interpreters executes ruby code directly. Perl interpreter executes Perl code directly. PHP interpreter executes php code on web servers. TCL interpreters execute Tcl code directly.