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authorGravatar Benjamin Barenblat <bbaren@debian.org>2018-12-29 14:31:27 -0500
committerGravatar Benjamin Barenblat <bbaren@debian.org>2018-12-29 14:31:27 -0500
commit9043add656177eeac1491a73d2f3ab92bec0013c (patch)
tree2b0092c84bfbf718eca10c81f60b2640dc8cab05 /doc/tools/coqrst/notations/TacticNotations.g
parenta4c7f8bd98be2a200489325ff7c5061cf80ab4f3 (diff)
Imported Upstream version 8.8.2upstream/8.8.2
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+/************************************************************************/
+/* * The Coq Proof Assistant / The Coq Development Team */
+/* v * INRIA, CNRS and contributors - Copyright 1999-2018 */
+/* <O___,, * (see CREDITS file for the list of authors) */
+/* \VV/ **************************************************************/
+/* // * This file is distributed under the terms of the */
+/* * GNU Lesser General Public License Version 2.1 */
+/* * (see LICENSE file for the text of the license) */
+/************************************************************************/
+grammar TacticNotations;
+
+// Terminals are not visited, so we add non-terminals for each terminal that
+// needs rendering (in particular whitespace (kept in output) vs. WHITESPACE
+// (discarded)).
+
+top: blocks EOF;
+blocks: block ((whitespace)? block)*;
+block: atomic | meta | hole | repeat | curlies;
+repeat: LGROUP (ATOM)? WHITESPACE blocks (WHITESPACE)? RBRACE;
+curlies: LBRACE (whitespace)? blocks (whitespace)? RBRACE;
+whitespace: WHITESPACE;
+meta: METACHAR;
+atomic: ATOM (SUB)?;
+hole: ID (SUB)?;
+
+LGROUP: '{' [+*?];
+LBRACE: '{';
+RBRACE: '}';
+METACHAR: '%' [|(){}];
+ATOM: '@' | '_' | ~[@_{} ]+;
+ID: '@' ('_'? [a-zA-Z0-9])+;
+SUB: '_' '_' [a-zA-Z0-9]+;
+WHITESPACE: ' '+;