Lalr parser - PowerPoint PPT Presentation

CS 31003: Compilers

CS 31003: Compilers. Difference between SLR and LR(1) Construction of LR(1) parsing table LALR parser. Bandi Sumanth 11CS30006 Date : 9/10/2013. Differences between SLR and LR(1). SLR , Non SLR and LR(1) grammar. SLR grammar

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LALR PARSER

LALR PARSER. Prepared by VISHWA DEEPAK 04CS1029. There are three issues which arise here— Whether LALR is equivalent to SLR. Shift/Reduce conflict in the cases of LR(1) and LALR. Reduce/Reduce conflict in the cases of LR(1) and LALR. Taking an example Grammar. S’ -&gt; S S -&gt; Bbb

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353 views • 13 slides

Conflicts in Simple LR parsers

Conflicts in Simple LR parsers. A SLR Parser does not use any lookahead The SLR parsing method fails if knowing the stack’s top state and next input token is not always enough to decide between a shift and a reduce action to decide between two or more reduce actions

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248 views • 10 slides

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