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A Fast General Parser for Automatic Code Generation

  • Wuu Yang
Conference paper
  • 552 Downloads
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6083)

Abstract

The code generator in a compiler attempts to match a subject tree against a collection of tree-shaped patterns for generating instructions. Tree-pattern matching may be considered as a generalization of string parsing. We propose a new generalized LR (GLR) parser, which extends the LR parser stack with a parser cactus. GLR explores all plausible parsing steps to find the least-cost matching. GLR is fast due to two properties: (1) duplicate parsing steps are eliminated and (2) partial parse trees that will not lead to a least-cost matching are discarded as early as possible.

Keywords

ambiguous grammar code generator compiler context-free grammar parsing general parsing pattern matching tree pattern tree-pattern matching 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Wuu Yang
    • 1
  1. 1.National Chiao-Tung UniversityTaiwan, Republic of China

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