--- parser3/src/include/pa_string.h	2001/01/29 15:56:03	1.10
+++ parser3/src/include/pa_string.h	2001/01/29 22:34:57	1.14
@@ -1,5 +1,5 @@
 /*
-  $Id: pa_string.h,v 1.10 2001/01/29 15:56:03 paf Exp $
+  $Id: pa_string.h,v 1.14 2001/01/29 22:34:57 paf Exp $
 */
 
 /*
@@ -29,10 +29,10 @@
 class Pool;
 
 #ifndef NO_STRING_ORIGIN
-#	define STRING_APPEND_PARAMS char *src, char *file, uint line
+#	define STRING_APPEND_PARAMS const char *src, char *file, uint line
 #	define APPEND(src, file, line) real_append(src, file, line)
 #else
-#	define STRING_APPEND_PARAMS char *src
+#	define STRING_APPEND_PARAMS const char *src
 #	define APPEND(src, file, line) real_append(src)
 #endif
 
@@ -46,21 +46,23 @@ public:
 
 public:
 
-	void *operator new(size_t size, Pool *apool);
-	String(Pool *apool);
-	String(String& src);
-	size_t size() { return fsize; }
-	int used_rows() { return fused_rows; }
-	char *c_str();
+	void *operator new(size_t size, Pool& apool);
+	String(Pool& apool);
+	String(const String& src);
+	size_t size() const { return fsize; }
+	int used_rows() const { return fused_rows; }
+	char *cstr() const;
 	String& real_append(STRING_APPEND_PARAMS);
-	bool operator == (String& src);
+	bool operator == (const String& src) const;
 
-	uint hash_code();
+	uint hash_code() const;
+
+	const Origin& origin() const { return head.rows[0].item.origin; }
 
 protected:
 
 	// the pool I'm allocated on
-	Pool *pool;
+	Pool& pool;
 
 private:
 
@@ -70,7 +72,7 @@ private:
 		union Row {
 			// chunk item
 			struct {
-				char *ptr;  // pointer to the start of string fragment
+				const char *ptr;  // pointer to the start of string fragment
 				size_t size;  // length of the fragment
 				Origin origin;  // origin of this fragment
 			} item;
@@ -107,7 +109,7 @@ private:
 
 private: //disabled
 
-	String& operator = (String&) { return *this; }
+	String& operator = (const String&) { return *this; }
 
 };