Otherwise M is said to reject S. S is in L if and only if M accepts S. JFLAP is a FSM application!! Context Free Grammar (CFGs) are a well-known type of language generator!! Language Generators create the strings (sentences) of a Language. A generator provides a construction description. If a generator is able to construct all stings in a Language L, and every string S that can be constructed by that generator is in L, we can say that the generator is a generator for the language L. If there is no way to construct a string S from the generator, S is not in L. s (PDAs) are a well known form of language recognizers. not really covered here Extended (Updated) BNF (EBNF) like anything else, some updates were made for convenience only increased the readability/writability (for us!!) there are other versions of the updates 3 most common updates optional part in RHS Optional parts are placed in brackets [ ] anything with in reality is now replaced almost |’s if symbol is unique to any of the rules, it may need to stay less rules, or as many lines to write EBNF “Optional” Update (Extension) in C++: <if_stmt> <expression> ) <statements> [else <statements> ] if( <if_stmt> if( <expression> ) <statements> | <expression> ) <statements> <statements> if( else
Otherwise M is said to reject S. S is in L if and only if M accepts S. JFLAP is a FSM application!! Context Free Grammar (CFGs) are a well-known type of language generator!! Language Generators create the strings (sentences) of a Language. A generator provides a construction description. If a generator is able to construct all stings in a Language L, and every string S that can be constructed by that generator is in L, we can say that the generator is a generator for the language L. If there is no way to construct a string S from the generator, S is not in L. s (PDAs) are a well known form of language recognizers. not really covered here Extended (Updated) BNF (EBNF) like anything else, some updates were made for convenience only increased the readability/writability (for us!!) there are other versions of the updates 3 most common updates optional part in RHS Optional parts are placed in brackets [ ] almost anything with |’s in reality is now replaced if symbol is unique to any of the rules, it may need to stay less rules, or as many lines to write EBNF “Optional” Update (Extension) in C++: <if_stmt> if( <expression> ) <statements> [else <statements> ] <if_stmt> if( <expression> ) <statements> | if( <expression> ) <statements> else <statements>
GrammarsAndParseTrees(Syntax).docx