# PA1-A：语法分析器的自动构造

- [阶段任务](/decaf-book/java-kuang-jia-fen-jie-duan-zhi-dao/pa1a-yu-fa-fen-xi-qi-de-zi-dong-gou-zao/index.md)
- [词法分析](/decaf-book/java-kuang-jia-fen-jie-duan-zhi-dao/pa1a-yu-fa-fen-xi-qi-de-zi-dong-gou-zao/lexer.md)
- [抽象语法树](/decaf-book/java-kuang-jia-fen-jie-duan-zhi-dao/pa1a-yu-fa-fen-xi-qi-de-zi-dong-gou-zao/tree.md)
- [文法分析](/decaf-book/java-kuang-jia-fen-jie-duan-zhi-dao/pa1a-yu-fa-fen-xi-qi-de-zi-dong-gou-zao/parser.md)