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Syntax-Directed Translation

Syntax-Directed Translation

Syntax-Directed Translation. Grammar symbols are associated with attributes to associate information with the programming language constructs that they represent. Values of these attributes are evaluated by the semantic rules associated with the production rules.

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2.39k views • 51 slides
Syntax-Directed Translation

Syntax-Directed Translation

Syntax-Directed Translation. Syntax-Directed Translation. We associate information with the programming language constructs by attaching attributes to grammar symbols. Values of these attributes are evaluated by the semantic rules associated with the production rules.

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2.16k views • 49 slides
Intermediate Code Generation

Intermediate Code Generation

Intermediate Code Generation. Professor Yihjia Tsai Tamkang University. Introduction. Intermediate representation (IR) Generally a program for an abstract machine (can be assembly language or slightly above) Easy to produce and translate into target code Why?

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825 views • 48 slides
LESSON 28

LESSON 28

LESSON 28. Overview of Previous Lesson(s). Over View. In syntax-directed translation we construct a parse tree or a syntax tree, and then to compute the values of attributes at the nodes of the tree by visiting the nodes of the tree.

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672 views • 41 slides
Attribute Grammars

Attribute Grammars

Attribute Grammars. Recall the yacc program Parse a given expression Evaluate it. expr : expr '+' expr {$$ = $1 + $3;} | expr '-' expr {$$ = $1 - $3;} | expr '*' expr {$$ = $1 * $3;} | expr '/' expr {$$ = $1 / $3;} | '(' expr ')' {$$ = $2;}

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204 views • 11 slides
SYNTAX DIRECTED TRANSLATION

SYNTAX DIRECTED TRANSLATION

SYNTAX DIRECTED TRANSLATION. 11CS30011. Types of Attributes. There are two types of attributes for non-terminals :- Synthesized Attributes : For a non-terminal X at a parse-tree node T , the synthesized attribute is defined only in terms of attribute values at the children of T .

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281 views • 10 slides
Lecture # 16

Lecture # 16

Lecture # 16. Chapter # 5: Syntax Directed Translation. Syntax-Directed Translation. Uses a CFG to specify the syntactic structure of the language It associates a set of attributes with the terminals and nonterminals of the grammar

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273 views • 9 slides
Syntax Directed Translation

Syntax Directed Translation

Syntax Directed Translation. Syntax directed translation. Yacc can do a simple kind of syntax directed translation from an input sentence to C code We can also think of it as compilation Each node in a parse tree produces a value That value depends on the type of the node

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262 views • 7 slides
Syntax Directed Translation

Syntax Directed Translation

Syntax Directed Translation. Syntax directed translation. Yacc can do a simple kind of syntax directed translation from an input sentence to C code We can also think of it as comilation Each node in a parse tree produces a value That value depends on the type of the node

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233 views • 7 slides

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