X-Git-Url: http://git.indexdata.com/?p=yaz-moved-to-github.git;a=blobdiff_plain;f=src%2Fcql2.0.y;fp=src%2Fcql2.0.y;h=1c5f3644c750a7cf40af06b70f6c518b3eb9e5a4;hp=0000000000000000000000000000000000000000;hb=2d82f5e172577a498d19396b210ca28553683310;hpb=2b4785b39a2bbb4affd77fb9e24aaabc0b2dd069

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+/* This file is part of the YAZ toolkit.
+ * Copyright (C) 1995-2010 Index Data
+ * See the file LICENSE for details.
+ */
+/*
+  YACC CQL grammar taken verbatim from the 2.0 draft (June 2010).
+ */
+%term PREFIX_NAME QUOTED_URI_STRING QUOTED_STRING AND OR NOT PROX SORTBY SIMPLE_STRING
+
+%%
+cql_query : query | query sort_spec;
+
+query : prefix_assignment search_clause_group | search_clause_group ;
+
+search_clause_group: search_clause_group boolean_modified subquery | subquery;
+
+subquery : '(' query ')' | search_clause;
+
+search_clause: index relation_modified search_term | search_term;
+
+search_term : SIMPLE_STRING | QUOTED_STRING;
+
+sort_spec : sort_by index_modified_list;
+
+sort_by: SORTBY;
+
+index_modified_list: index_modified_list index_modified | index_modified;
+
+prefix_assignment: '>' prefix '=' uri | '>' uri;
+
+prefix: SIMPLE_STRING;
+
+uri : QUOTED_URI_STRING;
+
+index_modified: index modifier_list | index;
+
+index : simple_name | PREFIX_NAME;
+
+relation_modified : relation modifier_list | relation;
+
+relation : relation_name | relation_symbol;
+
+relation_name: simple_name | PREFIX_NAME;
+
+relation_symbol : '=' | '>' | '<' ;
+
+boolean_modified : boolean modifier_list | boolean;
+
+boolean : AND | OR | NOT | PROX;
+
+modifier_list : modifier_list modifier | modifier;
+
+modifier : '/' modifier_name modifier_relation | '/' modifier_name;
+
+modifier_name: simple_name;
+
+modifier_relation : relation_symbol modifier_value;
+
+modifier_value : SIMPLE_STRING | QUOTED_STRING;
+
+simple_name: SIMPLE_STRING;
+
+%%