المحاضرة الثامنة

Syntax Analyzer (Parser)
We show that the lexical structure of tokens could be specified by regular expressions and that form a regular expressions we could automatically construct a lexical analyzer to recognize the tokens denoted by the expression. We shall use a notation called a context-free grammar or grammar only, for the syntactic specification of a programming language which is also called a BNF (Backus-Naur Form) description.
The parser obtains a string of tokens from the lexical analyzer, and verifies that the string can be generated by the grammar for the source language. The parser reports any syntax errors and gives an indication of the type of these errors.Syntax Analyzer (Parser)
We show that the lexical structure of tokens could be specified by regular expressions and that form a regular expressions we could automatically construct a lexical analyzer to recognize the tokens denoted by the expression. We shall use a notation called a context-free grammar or grammar only, for the syntactic specification of a programming language which is also called a BNF (Backus-Naur Form) description.
The parser obtains a string of tokens from the lexical analyzer, and verifies that the string can be generated by the grammar for the source language. The parser reports any syntax errors and gives an indication of the type of these errors.Syntax Analyzer (Parser)
We show that the lexical structure of tokens could be specified by regular expressions and that form a regular expressions we could automatically construct a lexical analyzer to recognize the tokens denoted by the expression. We shall use a notation called a context-free grammar or grammar only, for the syntactic specification of a programming language which is also called a BNF (Backus-Naur Form) description.
The parser obtains a string of tokens from the lexical analyzer, and verifies that the string can be generated by the grammar for the source language. The parser reports any syntax errors and gives an indication of the type of these errors.Syntax Analyzer (Parser)
We show that the lexical structure of tokens could be specified by regular expressions and that form a regular expressions we could automatically construct a lexical analyzer to recognize the tokens denoted by the expression. We shall use a notation called a context-free grammar or grammar only, for the syntactic specification of a programming language which is also called a BNF (Backus-Naur Form) description.
The parser obtains a string of tokens from the lexical analyzer, and verifies that the string can be generated by the grammar for the source language. The parser reports any syntax errors and gives an indication of the type of these errors.Syntax Analyzer (Parser)
We show that the lexical structure of tokens could be specified by regular expressions and that form a regular expressions we could automatically construct a lexical analyzer to recognize the tokens denoted by the expression. We shall use a notation called a context-free grammar or grammar only, for the syntactic specification of a programming language which is also called a BNF (Backus-Naur Form) description.
The parser obtains a string of tokens from the lexical analyzer, and verifies that the string can be generated by the grammar for the source language. The parser reports any syntax errors and gives an indication of the type of these errors.