Add const correctness to public interfaces

    Gerard Krol, g dot c dot krol at student dot tudelft dot nl

Update version number to 0.9



git-svn-id: http://svn.metaparadigm.com/svn/json-c/trunk@27 327403b1-1117-474d-bef2-5cb71233fd97

1 files changed, 15 insertions, 15 deletions

diff --git a/linkhash.h b/linkhash.h
index 785ddf4..9b5ef9d 100644
--- a/linkhash.h
+++ b/linkhash.h
@@ -36,11 +36,11 @@ typedef void (lh_entry_free_fn) (struct lh_entry *e);
 /**
  * callback function prototypes
  */
-typedef unsigned long (lh_hash_fn) (void *k);
+typedef unsigned long (lh_hash_fn) (const void *k);
 /**
  * callback function prototypes
  */
-typedef int (lh_equal_fn) (void *k1, void *k2);
+typedef int (lh_equal_fn) (const void *k1, const void *k2);
 
 /**
  * An entry in the hash table
@@ -53,7 +53,7 @@ struct lh_entry {
 	/**
 	 * The value.
 	 */
-	void *v;
+	const void *v;
 	/**
 	 * The next entry
 	 */
@@ -106,7 +106,7 @@ struct lh_table {
 	/**
 	 * Name of the hash table.
 	 */
-	char *name;
+	const char *name;
 
 	/**
 	 * The first entry.
@@ -132,11 +132,11 @@ struct lh_table {
 /**
  * Pre-defined hash and equality functions
  */
-extern unsigned long lh_ptr_hash(void *k);
-extern int lh_ptr_equal(void *k1, void *k2);
+extern unsigned long lh_ptr_hash(const void *k);
+extern int lh_ptr_equal(const void *k1, const void *k2);
 
-extern unsigned long lh_char_hash(void *k);
-extern int lh_char_equal(void *k1, void *k2);
+extern unsigned long lh_char_hash(const void *k);
+extern int lh_char_equal(const void *k1, const void *k2);
 
 
 /**
@@ -170,7 +170,7 @@ for(entry = table->head; entry && ((tmp = entry->next) || 1); entry = tmp)
  * and C strings respectively.
  * @return a pointer onto the linkhash table.
  */
-extern struct lh_table* lh_table_new(int size, char *name,
+extern struct lh_table* lh_table_new(int size, const char *name,
 				     lh_entry_free_fn *free_fn,
 				     lh_hash_fn *hash_fn,
 				     lh_equal_fn *equal_fn);
@@ -183,7 +183,7 @@ extern struct lh_table* lh_table_new(int size, char *name,
  * @param free_fn callback function used to free memory for entries.
  * @return a pointer onto the linkhash table.
  */
-extern struct lh_table* lh_kchar_table_new(int size, char *name,
+extern struct lh_table* lh_kchar_table_new(int size, const char *name,
 					   lh_entry_free_fn *free_fn);
 
 
@@ -195,7 +195,7 @@ extern struct lh_table* lh_kchar_table_new(int size, char *name,
  * @param free_fn callback function used to free memory for entries.
  * @return a pointer onto the linkhash table.
  */
-extern struct lh_table* lh_kptr_table_new(int size, char *name,
+extern struct lh_table* lh_kptr_table_new(int size, const char *name,
 					  lh_entry_free_fn *free_fn);
 
 
@@ -214,7 +214,7 @@ extern void lh_table_free(struct lh_table *t);
  * @param k a pointer to the key to insert.
  * @param v a pointer to the value to insert.
  */
-extern int lh_table_insert(struct lh_table *t, void *k, void *v);
+extern int lh_table_insert(struct lh_table *t, void *k, const void *v);
 
 
 /**
@@ -223,7 +223,7 @@ extern int lh_table_insert(struct lh_table *t, void *k, void *v);
  * @param k a pointer to the key to lookup
  * @return a pointer to the record structure of the value or NULL if it does not exist.
  */
-extern struct lh_entry* lh_table_lookup_entry(struct lh_table *t, void *k);
+extern struct lh_entry* lh_table_lookup_entry(struct lh_table *t, const void *k);
 
 /**
  * Lookup a record into the table
@@ -231,7 +231,7 @@ extern struct lh_entry* lh_table_lookup_entry(struct lh_table *t, void *k);
  * @param k a pointer to the key to lookup
  * @return a pointer to the found value or NULL if it does not exist.
  */
-extern void* lh_table_lookup(struct lh_table *t, void *k);
+extern const void* lh_table_lookup(struct lh_table *t, const void *k);
 
 
 /**
@@ -255,7 +255,7 @@ extern int lh_table_delete_entry(struct lh_table *t, struct lh_entry *e);
  * @return 0 if the item was deleted.
  * @return -1 if it was not found.
  */
-extern int lh_table_delete(struct lh_table *t, void *k);
+extern int lh_table_delete(struct lh_table *t, const void *k);
 
 
 void lh_abort(const char *msg, ...);