--- parser3/src/include/pa_string.h	2016/10/26 16:40:49	1.220
+++ parser3/src/include/pa_string.h	2016/12/05 23:52:49	1.222
@@ -8,7 +8,7 @@
 #ifndef PA_STRING_H
 #define PA_STRING_H
 
-#define IDENT_PA_STRING_H "$Id: pa_string.h,v 1.220 2016/10/26 16:40:49 moko Exp $"
+#define IDENT_PA_STRING_H "$Id: pa_string.h,v 1.222 2016/12/05 23:52:49 moko Exp $"
 
 // includes
 #include "pa_types.h"
@@ -171,7 +171,7 @@ public:
 
 	public:
 
-		const char* v() const;
+		const char* visualize() const;
 		void dump() const;
 
 		Languages(): langs(0) {}
@@ -312,6 +312,7 @@ public:
 		size_t length;
 		C(): str(0), length(0) {}
 		C(const char *astr, size_t asize): str(astr), length(asize) {}
+		explicit C(Body abody): str(abody.cstr()), length(abody.length()) {}
 	};
 
 	struct Cm {
@@ -319,6 +320,7 @@ public:
 		size_t length;
 		Cm(): str(0), length(0) {}
 		Cm(char *astr, size_t asize): str(astr), length(asize) {}
+		explicit Cm(Body abody): str(abody.cstrm()), length(abody.length()) {}
 	};
 
 	class Body {
@@ -348,7 +350,6 @@ public:
 
 	public:
 
-		const char* v() const;
 		void dump() const;
 
 		Body(): body(CORD_EMPTY) INIT_HASH_CODE(0) INIT_LENGTH(0) {}
@@ -384,6 +385,7 @@ public:
 		inline CORD get_cord() const { return body; }
 		uint get_hash_code() const;
 
+		// never null
 		const char* cstr() const {
 #ifdef STRING_LENGTH_CACHING
 			string_length = length();
@@ -396,6 +398,7 @@ public:
 			return CORD_to_const_char_star(body, length());
 		}
 
+		// never null
 		char* cstrm() const { return CORD_to_char_star(body, length()); }
 
 #ifdef STRING_LENGTH_CACHING
@@ -487,7 +490,6 @@ private:
 	Body body; ///< all characters of string
 	Languages langs; ///< string characters lang
 
-	const char* v() const;
 	void dump() const;
 	#define ASSERT_STRING_INVARIANT(string) \
 		assert((string).langs.invariant((string).body.length()))
@@ -561,6 +563,8 @@ public:
 		return langs.opt.lang;
 	}
 
+	char* visualize_langs() const;
+
 	/// puts pieces to buf
 	Cm serialize(size_t prolog_size) const;
 	/// appends pieces from buf to self