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LALR(1) 方法

LALR(1) 方法. 它具有 SLR(1) 的状态数少的优点和 LR(1) 的适用范围广的优点。 LALR(1) 方法的功能介于 SLR(1) 和 LR(1) 之间。 LALR(1) 状态机的状态个数和 LR(0) 状态机的状态个数相同，而其展望符则即不采用 SLR(1) 的 Follow 集方法，也不采用 LR(1) 的完全精确法。. LALR(1) 的思想来源. LR(1) 状态机和 LR(0) 状态机从它们所表示的自动机角度来看是等价的；自动机可通过合并等价状态来减少状态个数。

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LALR(1) parsing

LALR(1) parsing. COP4620 – Programming Language Translators Dr. Manuel E. Bermudez. Non SLR(1) Grammars Calculating LALR(1) lookahead sets LALR(1) examples. Summary of Parsing (top-down vs. bottom-up). topics. S. . 1. 2. 6. LALR(1) parsing. A. b. a. 3. 7. 10. A → a.

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163 views • 10 slides

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