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Automata-based programming is a programming paradigm in which the program or part of it is thought of as a model of a finite-state machine (FSM) or any other (often more complicated) formal automaton (see automata theory). Sometimes a potentially infinite set of possible states is introduced, and such a set can have a complicated structure, not ...
Automata-based programming is a programming technology. [1] Its defining characteristic is the use of finite-state machines to describe program behavior. The transition graphs of state machines are used in all stages of software development (specification, implementation, debugging and documentation).
Figure 4 depicts a composition of two processes, P i and P j and a FIFO message channel C i,j, matching output actions of one automaton with identically named input actions of other automata. Thus, a send(m) i,j output performed by process P i is matched and performed with a send(m) i,j input performed by channel C i,j .
Free lists make the allocation and deallocation operations very simple. To free a region, one would just link it to the free list. To allocate a region, one would simply remove a single region from the end of the free list and use it. If the regions are variable-sized, one may have to search for a region of large enough size, which can be ...
It is free open-source software written by Andrew Trevorrow and Tomas Rokicki; [3] it can be scripted using Lua [1] or Python. It includes a hashlife algorithm that can simulate the behavior of very large structured or repetitive patterns such as Paul Rendell's Life universal Turing machine , [ 4 ] and that is fast enough to simulate some ...
The set of all context-free languages is identical to the set of languages accepted by pushdown automata, which makes these languages amenable to parsing.Further, for a given CFG, there is a direct way to produce a pushdown automaton for the grammar (and thereby the corresponding language), though going the other way (producing a grammar given an automaton) is not as direct.
In automata theory, a deterministic pushdown automaton (DPDA or DPA) is a variation of the pushdown automaton. The class of deterministic pushdown automata accepts the deterministic context-free languages, a proper subset of context-free languages. [1]
In the 1960s, theoretical research in computer science on regular expressions and finite automata led to the discovery that context-free grammars are equivalent to nondeterministic pushdown automata. [ 1 ] [ 2 ] [ 3 ] These grammars were thought to capture the syntax of computer programming languages.