| 图符语言CQL解释器的实现 |
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| 引用本文： | 鞠时光,李星毅. 图符语言CQL解释器的实现[J]. 计算机辅助设计与图形学学报, 2005, 17(1): 179-184 |
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| 作者姓名： | 鞠时光 李星毅 |
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| 作者单位： | 江苏大学计算机科学与通信工程学院,镇江,212013;江苏大学计算机科学与通信工程学院,镇江,212013 |
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| 基金项目： | 国家自然科学基金 (60 173 0 64 )，江苏省自然科学基金 (BK2 0 0 2 0 4) |
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| 摘 要： | 为了有效地实现数据库图符查询语言解释器，引入了图卡解析树；开发出二维文法规则；定义出一套适宜于模式分析、语法分析及语义解析的图符程序内部存储机制；并使用临时图卡的方法来解决带有嵌套结构的复杂语句的编译问题。
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| 关 键 词： | 可视化 图符语言 解释系统 数据库 |
Implementation of A Visual Language CQL Interpreter |
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| Ju Shiguang Li Xinyi. Implementation of A Visual Language CQL Interpreter[J]. Journal of Computer-Aided Design & Computer Graphics, 2005, 17(1): 179-184 |
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| Authors: | Ju Shiguang Li Xinyi |
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| Abstract: | Because the basic morpheme of visual program is not the common character, the compiler or interpreter of the language is different from that of the program in a common high-level language. In order to implement the interpreter of the database's icon querying language efficiently, the analytical tree of cards is introduced in the implementation. We make use of the 2-dimensional regulating metho, and define the internal storage mechanism of the icon program to meet the need of the pattern analysis, grammatical and semantic analysis. At the same time, temp-cards are used to solve the compiling problem of complex sentence with embedded structure. |
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| Keywords: | visual query language interpreting system database |
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