From ed5f2256317a0d0172908614b68dbb8213e772ad Mon Sep 17 00:00:00 2001
From: Adam Wardynski <award@.(B-4.4.46a)>
Date: Fri, 11 Mar 2011 16:25:15 +0100
Subject: [PATCH] TokenCondition - wrapper for L0 predicates, matches single
token under "$_"
---
libwccl/CMakeLists.txt | 1 +
.../ops/match/conditions/tokencondition.cpp | 41 ++++++++++++++++
libwccl/ops/match/conditions/tokencondition.h | 47 +++++++++++++++++++
3 files changed, 89 insertions(+)
create mode 100644 libwccl/ops/match/conditions/tokencondition.cpp
create mode 100644 libwccl/ops/match/conditions/tokencondition.h
diff --git a/libwccl/CMakeLists.txt b/libwccl/CMakeLists.txt
index 500aa12..09413f3 100644
--- a/libwccl/CMakeLists.txt
+++ b/libwccl/CMakeLists.txt
@@ -54,6 +54,7 @@ SET(libwccl_STAT_SRC
ops/functions/tset/catfilter.cpp
ops/functions/tset/getsymbols.cpp
ops/functions/tset/getsymbolsinrange.cpp
+ ops/match/conditions/tokencondition.cpp
ops/rulesequence.cpp
ops/tagaction.cpp
ops/tagactions/delete.cpp
diff --git a/libwccl/ops/match/conditions/tokencondition.cpp b/libwccl/ops/match/conditions/tokencondition.cpp
new file mode 100644
index 0000000..e6c0b0f
--- /dev/null
+++ b/libwccl/ops/match/conditions/tokencondition.cpp
@@ -0,0 +1,41 @@
+#include <libwccl/ops/match/conditions/tokencondition.h>
+#include <libwccl/values/tokenmatch.h>
+
+namespace Wccl {
+
+
+TokenCondition::TokenCondition(const boost::shared_ptr<Function<Bool> >& predicate)
+ : _predicate(predicate)
+{
+}
+
+std::string TokenCondition::name() const
+{
+ return _predicate->raw_name();
+}
+
+std::string TokenCondition::to_string(const Corpus2::Tagset& tagset) const
+{
+ return _predicate->to_string(tagset);
+}
+
+MatchResult TokenCondition::apply(boost::shared_ptr<Position> iter_pos, const FunExecContext& context) const
+{
+ if (_predicate->apply(context)->get_value()) {
+ boost::shared_ptr<Match> match = boost::shared_ptr<Match>(new TokenMatch(
+ context.sentence_context().get_abs_position(*iter_pos)));
+ // increase the $_ variable by one after successful token match
+ iter_pos->set_value(iter_pos->get_value() + 1);
+ return MatchResult(true, match);
+ }
+ else {
+ return MatchResult();
+ }
+}
+
+std::ostream& TokenCondition::write_to(std::ostream& os) const
+{
+ return os << *_predicate;
+}
+
+} /* end ns Wccl */
diff --git a/libwccl/ops/match/conditions/tokencondition.h b/libwccl/ops/match/conditions/tokencondition.h
new file mode 100644
index 0000000..94f0bf2
--- /dev/null
+++ b/libwccl/ops/match/conditions/tokencondition.h
@@ -0,0 +1,47 @@
+#ifndef LIBWCCL_OPS_MATCH_CONDITIONS_TOKENCODITION_H
+#define LIBWCCL_OPS_MATCH_CONDITIONS_TOKENCODITION_H
+
+#include <libwccl/ops/match/matchcondition.h>
+#include <libwccl/ops/function.h>
+
+namespace Wccl {
+
+/**
+ * Class for conditions of MatchOperator that operate on tokens,
+ * wrapping WCCL Predicates
+ */
+class TokenCondition : public MatchCondition
+{
+public:
+ TokenCondition(const boost::shared_ptr<Function<Bool> >& predicate);
+ /**
+ * @returns Name of the condition.
+ */
+ std::string name() const;
+ /**
+ * Applies the condition to the given execution context.
+ * If match is found, the current iter Position "$_" is increased
+ * by one (the size of token match, which is always one).
+ */
+ MatchResult apply(boost::shared_ptr<Position> iter_pos, const FunExecContext& context) const;
+
+ /**
+ * @returns String representation of the Action
+ */
+ std::string to_string(const Corpus2::Tagset& tagset) const;
+
+protected:
+ /**
+ * Writes string representation of the TokenCondition to
+ * an output stream.
+ * @returns Stream written to.
+ * @note May be incomplete and/or containt internal info.
+ */
+ std::ostream& write_to(std::ostream& ostream) const;
+private:
+ const boost::shared_ptr< const Function<Bool> > _predicate;
+};
+
+} /* end ns Wccl */
+
+#endif // LIBWCCL_OPS_MATCH_CONDITIONS_TOKENCODITION_H
--
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