From 9716df817281a4854895bc12d5870f55120431d2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Pawe=C5=82=20K=C4=99dzia?= <pawel.kedzia@pwr.wroc.pl>
Date: Fri, 22 Apr 2011 00:07:29 +0200
Subject: [PATCH] Added empty() operator to the grammar (for strset, symset and
match)
---
libwccl/parser/grammar.g | 81 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 81 insertions(+)
diff --git a/libwccl/parser/grammar.g b/libwccl/parser/grammar.g
index 628410a..f0f634b 100644
--- a/libwccl/parser/grammar.g
+++ b/libwccl/parser/grammar.g
@@ -35,6 +35,7 @@ header {
#include <libwccl/ops/functions/bool/predicates/issubsetof.h>
#include <libwccl/ops/functions/bool/predicates/isinside.h>
#include <libwccl/ops/functions/bool/predicates/isoutside.h>
+ #include <libwccl/ops/functions/bool/predicates/isempty.h>
#include <libwccl/ops/functions/bool/predicates/equals.h>
#include <libwccl/ops/functions/bool/predicates/weakagreement.h>
#include <libwccl/ops/functions/bool/predicates/pointagreement.h>
@@ -1055,6 +1056,8 @@ bool_operator
| ret = bool_condition [tagset, vars]
// setvar:
| ret = setvar_operator [tagset, vars]
+ // empty
+ | ret = empty_operator [tagset, vars]
// equal/in/inter:
| ret = equal_operator [tagset, vars]
| ret = in_operator [tagset, vars]
@@ -1639,6 +1642,84 @@ symset_setvar
}
;
+// ----------------------------------------------------------------------------
+// empty() operator
+// Returns boost::shared_ptr<Function<Bool> >
+//----------------------------------------------------------------------------
+empty_operator
+ [const Corpus2::Tagset& tagset, Variables& vars]
+ returns [boost::shared_ptr<Function<Bool> > op]
+ : "empty" LPAREN
+ (
+ (match_empty[tagset, vars]) =>
+ (
+ op = match_empty [tagset, vars]
+ )
+ | (symset_empty [tagset, vars]) =>
+ (
+ op = symset_empty [tagset, vars]
+ )
+ | op = strset_empty [tagset, vars]
+ )
+ RPAREN
+;
+
+/*
+empty_operator
+ [const Corpus2::Tagset& tagset, Variables& vars]
+ returns [boost::shared_ptr<Function<Bool> > op]
+ : "empty" LPAREN
+ (
+ op = match_empty [tagset, vars]
+ | op = symset_empty [tagset, vars]
+ | op = strset_empty [tagset, vars]
+ )
+ RPAREN
+;
+*/
+
+//----------------------------------------------------------------------------
+// match empty() operator
+// Returns boost::shared_ptr<Function<Bool> >
+match_empty
+ [const Corpus2::Tagset& tagset, Variables& vars]
+ returns [boost::shared_ptr<Function<Bool> > op]
+{
+ boost::shared_ptr<Function<Match> > arg;
+}
+ : arg = match_fit [tagset, vars] {
+ op.reset(new IsEmpty<Match>(arg));
+ }
+;
+
+//----------------------------------------------------------------------------
+// SymSet empty() operator
+// Returns boost::shared_ptr<Function<Bool> >
+symset_empty
+ [const Corpus2::Tagset& tagset, Variables& vars]
+ returns [boost::shared_ptr<Function<Bool> > op]
+{
+ boost::shared_ptr<Function<TSet> > arg;
+}
+ : arg = symset_operator [tagset, vars] {
+ op.reset(new IsEmpty<TSet>(arg));
+ }
+;
+
+//----------------------------------------------------------------------------
+// Strset empty() operator
+// Returns boost::shared_ptr<Function<Bool> >
+strset_empty
+ [const Corpus2::Tagset& tagset, Variables& vars]
+ returns [boost::shared_ptr<Function<Bool> > op]
+{
+ boost::shared_ptr<Function<StrSet> > arg;
+}
+ : arg = strset_operator [tagset, vars] {
+ op.reset(new IsEmpty<StrSet>(arg));
+ }
+;
+
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// Tagging actions and rules:
--
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