软件包: flex (2.5.35-6)

[ 源代码: flex  ]

A fast lexical analyzer generator.

Flex is a tool for generating scanners: programs which recognized lexical patterns in text. It reads the given input files for a description of a scanner to generate. The description is in the form of pairs of regular expressions and C code, called rules. Flex generates as output a C source file, lex.yy.c, which defines a routine yylex(). This file is compiled and linked with the -lfl library to produce an executable. When the executable is run, it analyzes its input for occurrences of the regular expressions. Whenever it finds one, it executes the corresponding C code.

The behaviour of Flex has undergone a major change since version 2.5.4a. Flex scanners are now reentrant, and it is now possible to have multiple scanners in the same program with differing sets of defaults, and the scanners play nicer with modern C and C++ compilers. The Flip side is that Flex no longer conforms to the POSIX lex behaviour, and the scanners require conforming implementations when flex is used in ANSI C mode. The package flex-old provides the older behaviour.

标签: Software Development: Code Generation, Implemented in: C, User Interface: Command Line, Role: Program, Scope: Utility, Works with: Source Code

其他与 flex 有关的软件包

• dep: debconf

  Debian 配置管理系统

  或者 debconf-2.0

  本虚包由这些包填实: cdebconf, cdebconf-udeb, debconf

• dep: libc6 (>= 2.7-1) [除 alpha, ia64]

  GNU C Library: Shared libraries
  同时作为一个虚包由这些包填实: libc6-udeb

• dep: libc6.1 (>= 2.7-1) [alpha, ia64]

  GNU C Library: Shared libraries
  同时作为一个虚包由这些包填实: libc6.1-udeb

• dep: m4

  一种宏处理语言

• rec: gcc

  GNU C 编译器

  或者 c-compiler

  本虚包由这些包填实: bcc, gcc, gcc-3.4, gcc-4.1, gcc-4.2, gcc-4.3, tcc

• sug: bison

  和 YACC 兼容的语法解析程序生成器

下载 flex

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硬件架构	软件包大小	安装后大小	文件
alpha	320.6 kB	1,032.0 kB	[文件列表]
amd64	320.8 kB	1,004.0 kB	[文件列表]
arm	316.6 kB	785.0 kB	[文件列表]
armel	313.4 kB	984.0 kB	[文件列表]
hppa	318.8 kB	988.0 kB	[文件列表]
i386	306.7 kB	776.0 kB	[文件列表]
ia64	352.6 kB	1,244.0 kB	[文件列表]
mips	321.5 kB	1,036.0 kB	[文件列表]
mipsel	320.9 kB	1,036.0 kB	[文件列表]
powerpc	318.9 kB	1,000.0 kB	[文件列表]
s390	318.6 kB	996.0 kB	[文件列表]
sparc	314.5 kB	992.0 kB	[文件列表]