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ll1语法分析的c语言实现代码 需要输入词法分析的txt结果文件
ll1语法分析的c语言实现代码 需要输入词法分析的txt结果文件-ll1 the grammar analysis c language realization code needs to
input the lexical analysis the txt result document
- 2023-03-31 09:25:03下载
- 积分:1
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为了实现编译器的实用,可自由编写源代码…
为了实现的编译程序实用,源程序可采用自由书写格式,即一行内可以书写多个语句,一个语句也可以占领多行书写;标识符的前20个字符有效;整数用2个字节表示;长整数用4个字节表示。这样词法分析程序的主要工作为:
(1)从源程序文件中读入字符。
(2)统计行数和列数用于错误单词的定位。
(3)删除空格类字符,包括回车、制表符空格。
(4)按拼写单词,并用(种别,单词)二元式表示。
(5)根据需要是否填写标识符表供以后各阶段使用。
这里采用的编译程序的实现方法是一遍扫描,即从左到右只扫描一次源程序,也就是词法分析作为语法分析的一个子程序。故在编写词法分析程序时,用重复调用词法分析子程序取一单词的方法得到整个源程序的二元式流。
-in order to achieve the compiler practical, available free to write source code format, that his writing can be more than words, a statement can occupy multiple lines written; identifier of 20 characters effective; Integer with two byte; long integer with four byte. This lexical analysis for major work : (1) from source document read into the characters. (2) Statistics and a few mistakes out a few words for positioning. (3) delete the blank type characters, including the carriage return, tab spaces. (4) the spelling words and use (other species, words) dual ceremony. (5) whether the need for completing the table identifier subsequent stages. Here the compilers of th
- 2022-01-23 11:14:40下载
- 积分:1
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Based on the classic of the Context
经典的基于Context-Free_Grammer 的语法分析器。-Based on the classic of the Context-Free_Grammer grammar analyzer.
- 2022-01-23 10:51:01下载
- 积分:1
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本人自己改进过的帧间差分方法,并且调试过,对于学习车辆检测算法的朋友,有些帮助...
本人自己改进过的帧间差分方法,并且调试过,对于学习车辆检测算法的朋友,有些帮助-I own improved interframe difference method, and debugging, the vehicle detection algorithm for learning friends, and some help
- 2022-04-01 03:43:59下载
- 积分:1
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词法分析器,用于输入表达式后输出单个独立的数据项
词法分析器,用于输入表达式后输出单个独立的数据项-lexical analyzer for the importation of expression output of a single independent data item
- 2022-07-06 18:33:27下载
- 积分:1
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C语言编写的简单计算程序的语法分析器,可以识别一定的计算功能...
C语言编写的简单计算程序的语法分析器,可以识别一定的计算功能-C language prepared by the simple calculation procedure syntax analyzer can identify certain computing capabilities
- 2022-05-07 07:17:33下载
- 积分:1
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构造LR(1)分析程序,利用它进行语法分析,判断给出的符号串是否为该文法识别的句子,了解LR(K)分析方法是严格的从左向右扫描,和自底向上的语法分析方法。...
构造LR(1)分析程序,利用它进行语法分析,判断给出的符号串是否为该文法识别的句子,了解LR(K)分析方法是严格的从左向右扫描,和自底向上的语法分析方法。-tectonic LR (1) analysis procedure, and use it for syntax analysis, judgment, given the string of symbols to whether the sentence grammar recognition, understanding LR (K) analysis method is strict scan from left to right, and bottom-up syntax analysis.
- 2023-03-26 20:15:04下载
- 积分:1
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系统地讲述了计算机语言的编译原理。如:编译器、词法分析、文法等...
系统地讲述了计算机语言的编译原理。如:编译器、词法分析、文法等-Systematically about the principles of computer language compiler. Such as: compiler, lexical analysis, grammar, etc.
- 2023-03-09 13:55:04下载
- 积分:1
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解法:对原文法消除左递归,根据消除左递归后的等价文法建立语法树,而后对此语法树 进行后根遍历,即可得到后缀式....
解法:对原文法消除左递归,根据消除左递归后的等价文法建立语法树,而后对此语法树 进行后根遍历,即可得到后缀式.- Solution: Eliminates the left recursion to the original
grammar, after equal in value grammar establishment grammar tree which
eliminates the left recursion, after but the grammar tree carries on
the root to spread the calendar regarding this, after then obtains
decorates the type
- 2022-01-22 17:47:18下载
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语法分析器,对已给pascal语言文法,构造LL(1)分析表,编制语法分析程序,要求将错误信息输出到语法错误文件中,并输出分析句子的过程...
语法分析器,对已给pascal语言文法,构造LL(1)分析表,编制语法分析程序,要求将错误信息输出到语法错误文件中,并输出分析句子的过程-Parser that have been to the pascal language grammar, structure LL (1) analysis table, the preparation of parsing procedure that requires the output to the error message syntax error file, and output analysis of the process of sentence
- 2022-01-27 15:57:33下载
- 积分:1