Compiler Principles

1. The scanner usually computes possibly several attributes for each token. It is often helpful to collect all the attributes into a single structured data type. Please define such a structured data type for a token. 2. Which three basic operations are there in regular expressions? 3. What's the exactly meaning of a rightmost derivation in syntax analysis? 4. What's the disadvantages of an ambiguous grammar in syntax analysis? :, In total 03 pages. This is page 1 th-211