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Ragel icon

Ragel

Ragel is a finite-state machine compiler and a parser generator targeting C, C++ and ASM. It can recognize byte sequences and execute code at arbitrary points in the process.

Ragel screenshot 1

Cost / License

  • Free
  • Open Source

Platforms

  • Windows
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Features

  1.  State machine

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What is Ragel?

Ragel is a finite-state machine compiler and a parser generator targeting C, C++ and ASM. It can recognize byte sequences and execute code at arbitrary points in the process.

POTENTIAL USES

Writing robust protocol implementations. Parsing data formats. Lexical analysis of programming languages. Validating user input.

FEATURES

Construct finite state machines using: regular language operators state chart operators a scanner operator some mix of the above Embed actions into machines in arbitrary places. Control non-determinism using guarded operators. Minimize state machines using Hopcroft’s algorithm. Visualize output with Graphviz. Use byte, double byte or word-sized alphabets. Generate C, C++ or ASM (GNU, x86_64, System V ABI) code with no dependencies. Choose from table or control flow driven state machines.