add back pinyin_clear_constraint

1 files changed, 10 insertions, 0 deletions

diff --git a/src/pinyin.cpp b/src/pinyin.cpp
index 5cac776..35a7dc8 100644
--- a/src/pinyin.cpp
+++ b/src/pinyin.cpp
@@ -1711,6 +1711,16 @@ bool pinyin_free_candidates(pinyin_instance_t * instance,
     return true;
 }
 
+bool pinyin_clear_constraint(pinyin_instance_t * instance,
+                             size_t offset){
+    pinyin_context_t * & context = instance->m_context;
+
+    bool retval = context->m_pinyin_lookup->clear_constraint
+        (instance->m_constraints, offset);
+
+    return retval;
+}
+
 bool pinyin_lookup_tokens(pinyin_instance_t * instance,
                           const char * phrase, GArray * tokenarray){
     pinyin_context_t * & context = instance->m_context;