'Exp term' diaporamas de présentation

Analyzing Ambiguity of Context-Free Grammars

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LR Parsing

LR Parsing. Compiler Baojian Hua bjhua@ustc.edu.cn. Front End. lexical analyzer. source code. tokens. abstract syntax tree. parser. semantic analyzer. IR. Parsing. The parser translates the source program into abstract syntax trees Token sequence: returned from the lexer

635 views • 56 slides

LR Parsing

LR Parsing. Compiler Baojian Hua bjhua@ustc.edu.cn. Front End. lexical analyzer. source code. tokens. abstract syntax tree. parser. semantic analyzer. IR. Parsing. The parser translates the token sequence into abstract syntax trees Token sequence: returned from the lexer

882 views • 53 slides

Syntax != Semantics

Syntax != Semantics. Grammars. Help to. determine ??. Determine. Ambiguities. Ambiguity in English. I saw an airplane with a telescope. I saw a girl with her boyfriend. I saw a boy scout with a telescope on the mountain top.

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Calculator ??

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Method of Language Definition

Method of Language Definition. A Language is defined by: A: Lexical = Valid Tokens & Words B: Syntax = The GRAMMER of the Language C : Semantics = The MEANING of valid syntactical statement. Language. A: Lexical B: Syntax. Written English

242 views • 11 slides