Created
March 15, 2011 08:20
-
-
Save nyuichi/870455 to your computer and use it in GitHub Desktop.
H-BNF
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| ;;; Syntax Rules (in BNF) | |
| ;;; | |
| ;;; <program> ::= <main> | <definition> <program> | |
| ;;; <main> ::= <statement> <eof> | <statement> <main> | |
| ;;; <statement> ::= 's' | 'r' | 'l' | <call> | <parameter> | |
| ;;; | |
| ;;; <call> ::= <procname> | <procname> '(' <arguments> ')' | |
| ;;; <arguments> ::= <argument> | <argument> ',' <arguments> | |
| ;;; <argument> ::= <expression> | <body> | |
| ;;; <body> ::= <statement> <body> | '' | |
| ;;; | |
| ;;; <expression> ::= '-' <numeric> <succeed> | |
| ;;; <succeed> ::= <sign> <numeric> <succeed> | '' | |
| ;;; <sign> ::= '-' | '+' | |
| ;;; <numeric> ::= <number> | <parameter> | |
| ;;; | |
| ;;; <definition> ::= <prototype> ':' <body> <endline> | |
| ;;; <prototype> ::= <procname> | <procname> '(' <parameters> ')' | |
| ;;; <parameters> ::= <parameter> | <parameter> ',' <parameters> | |
| ;;; | |
| ;;; <procname> ::= <lowercase> | |
| ;;; <parameter> ::= <uppercase> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment