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by Dinesh Thakur

Some commonly used compiler-construction tools. include

1. Parser generators.
2. Scanner generators.
3. Syntax-directed translation engines.
4. Automatic code generators.
5. Data-flow analysis engines.
6. Compiler-construction toolkits.

Parser Generators

Input: Grammatical description of a programming language
Output: Syntax analyzers.

Parser generator takes the grammatical description of a programming language and produces a syntax analyzer.

Scanner Generators

Input: Regular expression description of the tokens of a language
Output: Lexical analyzers.
Scanner generator generates lexical analyzers from a regular expression description of the tokens of a language.

Syntax-directed Translation Engines

Input: Parse tree.
Output: Intermediate code.
Syntax-directed translation engines produce collections of routines that walk a parse tree and generates intermediate code.

Automatic Code Generators

Input: Intermediate language.
Output: Machine language.
Code-generator takes a collection of rules that define the translation of each operation of the intermediate language into the machine language for a target machine.

Data-flow Analysis Engines

Data-flow analysis engine gathers the information, that is, the values transmitted from one part of a program to each of the other parts. Data-flow analysis is a key part of code optimization.

Compiler Construction Toolkits

The toolkits provide integrated set of routines for various phases of compiler. Compiler construction toolkits provide an integrated set of routines for construction of phases of compiler.