added API in the C runtime and the Java binding for checking whether a given function is linearizable in a given language. This is used in the Android UI for better vizualizations

src/runtime/c/pgf/pgf.c

@@ -158,3 +158,11 @@ pgf_print_name(PgfConcr* concr, PgfCId id)
 		name = id;
 	return name;
 }
+
+bool
+pgf_has_linearization(PgfConcr* concr, PgfCId id)
+{
+	PgfCncOverloadMap* overl_table =
+		gu_map_get(concr->fun_indices, id, PgfCncOverloadMap*);
+	return (overl_table != NULL);
+}

src/runtime/c/pgf/pgf.h

@@ -1,27 +1,3 @@
-/* 
- * Copyright 2010 University of Gothenburg.
- *   
- * This file is part of libpgf.
- * 
- * Libpgf is free software: you can redistribute it and/or modify it under
- * the terms of the GNU Lesser General Public License as published by the
- * Free Software Foundation, either version 3 of the License, or (at your
- * option) any later version.
- * 
- * Libpgf is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
- * License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with libpgf. If not, see <http://www.gnu.org/licenses/>.
- */
-
-/** @file
- *
- * The public libpgf API.
- */
-
 #ifndef PGF_H_
 #define PGF_H_
 
@@ -114,6 +90,9 @@ pgf_function_type(PgfPGF* pgf, PgfCId funname);
 GuString
 pgf_print_name(PgfConcr*, PgfCId id);
 
+bool
+pgf_has_linearization(PgfConcr* concr, PgfCId id);
+
 void
 pgf_linearize(PgfConcr* concr, PgfExpr expr, GuOut* out, GuExn* err);
 

src/runtime/java/jpgf.c

@@ -472,6 +472,17 @@ Java_org_grammaticalframework_pgf_Concr_lookupMorpho(JNIEnv* env, jobject self,
 	return analyses;
 }
 
+JNIEXPORT jboolean JNICALL
+Java_org_grammaticalframework_pgf_Concr_hasLinearization(JNIEnv* env, jobject self, jstring jid)
+{
+	PgfConcr* concr = get_ref(env, self);
+	GuPool* tmp_pool = gu_new_pool();
+	PgfCId id = j2gu_string(env, jid, tmp_pool);
+	bool res = pgf_has_linearization(concr, id);
+	gu_pool_free(tmp_pool);
+	return res;
+}
+
 JNIEXPORT void JNICALL 
 Java_org_grammaticalframework_pgf_Pool_free(JNIEnv* env, jobject self, jlong ref)
 {

src/runtime/java/org/grammaticalframework/pgf/Concr.java

@@ -25,6 +25,8 @@ public class Concr {
 
 	public native List<MorphoAnalysis> lookupMorpho(String sentence);
 
+	public native boolean hasLinearization(String id);
+
 	//////////////////////////////////////////////////////////////////
 	// private stuff
 	

src/ui/android/src/org/grammaticalframework/ui/android/LexicalEntryActivity.java

@@ -211,8 +211,7 @@ public class LexicalEntryActivity extends ListActivity {
 	        TextView descView =
 	        		(TextView) convertView.findViewById(R.id.lexical_desc);
 
-	    	Expr e = Expr.readExpr(lemma);
+	    	String phrase = mTranslator.generateTranslationEntry(lemma);
-	    	String phrase = mTranslator.generateTranslationEntry(e);
 	        descView.setText(phrase);
 
 	        convertView.setOnClickListener(new OnClickListener() {

src/ui/android/src/org/grammaticalframework/ui/android/Translator.java

@@ -131,10 +131,14 @@ public class Translator {
         }
     }
 
-    public String generateTranslationEntry(Expr e) {
+    public String generateTranslationEntry(String lemma) {
+    	Expr e = Expr.readExpr(lemma);
         Concr sourceLang = getConcr(getSourceLanguage().getConcrete());
         Concr targetLang = getConcr(getTargetLanguage().getConcrete());
-        return sourceLang.linearize(e) + " - " + targetLang.linearize(e);
+        if (targetLang.hasLinearization(lemma))
+        	return sourceLang.linearize(e) + " - " + targetLang.linearize(e);
+        else
+        	return sourceLang.linearize(e);
     }
 
     public Map<String,String> tabularLinearize(Expr e) {