Sentential forms - PowerPoint PPT Presentation

CSE P 501 – Compilers

CSE P 501 – Compilers. LR Parsing Hal Perkins Winter 2008. Agenda. LR Parsing Table-driven Parsers Parser States Shift-Reduce and Reduce-Reduce conflicts. LR(1) Parsing. We’ll look at LR(1) parsers L eft to right scan, R ightmost derivation, 1 symbol lookahead

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Grammars

Grammars. Definitions Grammars Backus-Naur Form Derivation terminology trees Grammars and ambiguity Simple example Grammar hierarchies Syntax graphs Recursive descent parsing. Definitions. Syntax the form or structure of the expressions, statements, and program units Semantics

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Compilers

Compilers. ABHISHEK REDDY PAM (11cs30002) date : 07/10/2013. Viable Prefix. The set of prefixes of right sentential forms that can appear on the stack of a shift-reduce parser are called viable prefixes.

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