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First implemented as a compile-and-go system rather than an interpreter, BASIC emerged as part of a wider movement towards time-sharing systems. General Electric, having worked on the Dartmouth Time-Sharing System and its associated Dartmouth BASIC, wrote their own underlying operating system and launched an online time-sharing system known as Mark I featuring a BASIC compiler (not an ...
Research compilers are mostly not robust or complete enough to handle real, large applications. They are used mostly for fast prototyping new language features and new optimizations in research areas. Open64: A popular research compiler. Open64 merges the open source changes from the PathScale compiler mentioned.
Interpreters have a wide variety of instructions which are specialized to perform different tasks, but you will commonly find interpreter instructions for basic mathematical operations, branching, and memory management, making most interpreters Turing complete. Many interpreters are also closely integrated with a garbage collector and debugger.
If a compiler of a given high level language produces another high level language, it is called a transpiler. Transpilers can be used to extend existing languages or to simplify compiler development by exploiting portable and well-optimized implementations of other languages (such as C ).
Low-level languages are directly converted to machine code with or without a compiler or interpreter—second-generation programming languages [5] [6] depending on programming language. A program written in a low-level language can be made to run very quickly, with a small memory footprint.
BASIC-E and early versions of CBASIC compiled source code into an intermediate p-code file, which was then executed by a separate run-time interpreter program. CBASIC could execute in a minimum of 24 KB of memory. Line numbers in the program source were optional, unless needed as a label for a program jump.
The name "compiler-compiler" was far more appropriate for Brooker's system than it is for most modern compiler-compilers, which are more accurately described as parser generators. In the early 1960s, Robert McClure at Texas Instruments invented a compiler-compiler called TMG, the name taken from "transmogrification".
A compiler for BBC BASIC V was produced by Paul Fellows, team leader of the Arthur OS development, called the Archimedes BASIC Compiler and published initially by DABS Press. [ citation needed ] ABC was able to implement almost all of the language, with the obvious exception of the EVAL function, which inevitably required run-time programmatic ...