Lexical analysis - Wikipedia, the free encyclopedia
In computer science, lexical analysis is the process of converting a sequence of characters into a sequence of tokens. Programs performing lexical analysis are called lexical analyzers or lexers ...
en.wikipedia.org/wiki/Lexical_analysis
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Flex lexical analyser - Wikipedia, the free encyclopedia
flex (fast lexical analyzer generator) is a free software alternative to lex. It is frequently used with the free Bison parser generator. Unlike Bison, flex is not part of the GNU project. Flex was w...
en.wikipedia.org/wiki/Flex_lexical_analyser
The lexical analysis programs written with Lex accept ambiguous specifications and choose the longest match possible at each input point. ... Yacc users will realize that the name yylex is what Yacc expects its lexical analyzer to be named, so that the use of this name by Lex simplifies interfacing.
dinosaur.compilertools.net/lex/index.html
A scanner, sometimes called a tokenizer, is a program which recognizes lexical patterns in text. The flex program reads user-specified input files, or its standard input if no file names are given, for a description of a scanner to generate.
flex.sourceforge.net/
4 The lexical analyzer ... You do not need to recompile the lexical analyzer functor each time the specification for the parser is changed if the signature {n}_TOKENS does not change. If you are using ML-Lex to create the lexical analyzer, you can turn the lexer structure into a functor using the...
www.smlnj.org/doc/ML-Yacc/mlyacc004.html
03-Lexical-Analysis (PDF File)
The lexical analyzer takes a source program as input, and produces a stream of tokens as output. The lexical analyzer might recognize particular instances of tokens such as: 3 or 255 for an integer constant token;
dragonbook.stanford.edu/lecture-notes/Stanford-CS143/03... dragonbook.stanford.edu/lecture-notes/Stanford-CS143/03-Lexical-Analysis.pdf
The function of the lexical analyser is to take input from the input stream and convert this input into tokens which are used by the parser.
www.cs.wpi.edu/~kal/elecdoc/sgml/lexicaldesc.html www.cs.wpi.edu/~kal/elecdoc/sgml/lexicaldesc.html
JLex is a lexical analyzer generator, written for Java, in Java. ... User Manual; Format of JLex specification files, performance of lexical analyzers generated with JLex, and other important issues. ... Sample Input; A sample specification file that can be used to generate a simple lexical analyzer using JLex.
www.cs.princeton.edu/~appel/modern/java/JLex/
The software previously known as JavaLex is now called JLex, and is available at this address. ... Java is a trademark of Sun Microsystems, Inc. References to the Java programming language in relation to JLex are not meant to imply that Sun endorses this product.
www.cs.princeton.edu/~appel/modern/java/JavaLex/
First, I guess you'd like to know what a lexical analyzer *is* and why we need it. The task of the lexical analyzer is to convert the character stream that is a source file into a token stream. Essentially it just looks at the characters sequentially and recognizes "words" in them.
www.flipcode.com/archives/Implementing_A_Scripting_Engi... www.flipcode.com/archives/Implementing_A_Scripting_Engine-Part_2_The_Lexical_Analyzer.shtml
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