'Ll 1 grammar' presentation slideshows

Computing if a token can follow

Computing if a token can follow. first (B 1 ... B p ) = {a ?? | B 1 ... B p ? ... ? aw } follow (X) = {a ?? | S ? ... ? ... Xa ... }

479 views • 39 slides

4 (c) parsing

4 (c) parsing. Parsing. A grammar describes syntactically legal strings in a language A recogniser simply accepts or rejects strings A generator produces strings A parser constructs a parse tree for a string Two common types of parsers: bottom-up or data driven

622 views • 35 slides

Lecture 1 1: Semester Review

Lecture 1 1: Semester Review. COMP 310 0 Dept. Computer Science and Technology United International College. Introduction. Compilation vs. Interpretation Compilation stages. DFA and its equivalents. DFA&NFA Definition Accepted string Regular expression Notation Accepted string

358 views • 25 slides

Review

Lexical Analysis. RG & DFA. Grammar & Language. Top-down LL(1) Parsing Bottom-Up LR Layered Automation. Syntax Analysis. Attribute Grammar Type Checking. Semantic Analysis. Run-time Environment. TAC Quadruple(Backpatching). Intermediate Code generation. Stack Allocations.

313 views • 16 slides

COMP 442 / 6421 Compiler Design Tutorial 3

COMP 442 / 6421 Compiler Design Tutorial 3. Instructor: Dr. Joey Paquet paquet@cse.concordia.ca TAs: Haotao Lai h_lai@encs.concordia.ca

154 views • 14 slides

CS 442/542

CS 442/542. Parsing 1. Parsing. Is the source program syntactically correct? Given a sequence of symbols and a grammar find a derivation that produces the sequence of symbols Input: sequence of words or tokens recognized by the scanner

262 views • 13 slides

Lecture 8

204 views • 9 slides