现代编译原理
最新书摘：
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70862022-11-21Two of the most useful abstractions used in modern compilers are context-free grammars, for parsing, and regular expressions, for lexical analysis. To make best use of these abstractions it is helpful to have special tools, such as Yacc (which converts a grammar into a parsing program)and Lex(which converts a declarative specification into a lexical analysis program).