*: add lots of "noexcept" specifications

src/client/Response.cxx

@@ -24,7 +24,7 @@
 #include "util/AllocatedString.hxx"
 
 TagMask
-Response::GetTagMask() const
+Response::GetTagMask() const noexcept
 {
 	return GetClient().tag_mask;
 }

src/client/Response.hxx

@@ -66,7 +66,7 @@ public:
 	 * to avoid including Client.hxx.
 	 */
 	gcc_pure
-	TagMask GetTagMask() const;
+	TagMask GetTagMask() const noexcept;
 
 	void SetCommand(const char *_command) {
 		command = _command;

src/command/PartitionCommands.cxx

@@ -61,7 +61,7 @@ IsValidPartitionChar(char ch)
 
 gcc_pure
 static bool
-IsValidPartitionName(const char *name)
+IsValidPartitionName(const char *name) noexcept
 {
 	do {
 		if (!IsValidPartitionChar(*name))
@@ -73,7 +73,7 @@ IsValidPartitionName(const char *name)
 
 gcc_pure
 static bool
-HasPartitionNamed(Instance &instance, const char *name)
+HasPartitionNamed(Instance &instance, const char *name) noexcept
 {
 	return instance.FindPartition(name) != nullptr;
 }

src/net/StaticSocketAddress.cxx

@@ -53,7 +53,7 @@ StaticSocketAddress::operator=(SocketAddress other) noexcept
 #ifdef HAVE_TCP
 
 bool
-StaticSocketAddress::SetPort(unsigned port)
+StaticSocketAddress::SetPort(unsigned port) noexcept
 {
 	switch (GetFamily()) {
 	case AF_INET:

src/net/StaticSocketAddress.hxx

@@ -96,7 +96,7 @@ public:
 	 * Extract the port number.  Returns 0 if not applicable.
 	 */
 	gcc_pure
-	unsigned GetPort() const {
+	unsigned GetPort() const noexcept {
 		return ((SocketAddress)*this).GetPort();
 	}
 
@@ -104,7 +104,7 @@ public:
 	 * @return true on success, false if this address cannot have
 	 * a port number
 	 */
-	bool SetPort(unsigned port);
+	bool SetPort(unsigned port) noexcept;
 #endif
 
 	gcc_pure

src/pcm/PcmPack.cxx

@@ -61,7 +61,7 @@ ConstructS24(uint8_t low, uint8_t mid, uint8_t high)
  */
 gcc_pure
 static int32_t
-ReadS24LE(const uint8_t *src)
+ReadS24LE(const uint8_t *src) noexcept
 {
 	return ConstructS24(src[0], src[1], src[2]);
 }
@@ -71,7 +71,7 @@ ReadS24LE(const uint8_t *src)
  */
 gcc_pure
 static int32_t
-ReadS24BE(const uint8_t *src)
+ReadS24BE(const uint8_t *src) noexcept
 {
 	return ConstructS24(src[2], src[1], src[0]);
 }
@@ -81,7 +81,7 @@ ReadS24BE(const uint8_t *src)
  */
 gcc_pure
 static int32_t
-ReadS24(const uint8_t *src)
+ReadS24(const uint8_t *src) noexcept
 {
 	return IsBigEndian() ? ReadS24BE(src) : ReadS24LE(src);
 }

src/tag/Tag.cxx

@@ -25,7 +25,7 @@
 #include <assert.h>
 
 void
-Tag::Clear()
+Tag::Clear() noexcept
 {
 	duration = SignedSongTime::Negative();
 	has_playlist = false;
@@ -98,7 +98,7 @@ Tag::HasType(TagType type) const noexcept
 }
 
 static TagType
-DecaySort(TagType type)
+DecaySort(TagType type) noexcept
 {
 	switch (type) {
 	case TAG_ARTIST_SORT:
@@ -116,7 +116,7 @@ DecaySort(TagType type)
 }
 
 static TagType
-Fallback(TagType type)
+Fallback(TagType type) noexcept
 {
 	switch (type) {
 	case TAG_ALBUM_ARTIST:
@@ -131,7 +131,7 @@ Fallback(TagType type)
 }
 
 const char *
-Tag::GetSortValue(TagType type) const
+Tag::GetSortValue(TagType type) const noexcept
 {
 	const char *value = GetValue(type);
 	if (value != nullptr)

src/tag/Tag.hxx

@@ -85,7 +85,7 @@ struct Tag {
 	 * Similar to the move operator, but move only the #TagItem
 	 * array.
 	 */
-	void MoveItemsFrom(Tag &&other) {
+	void MoveItemsFrom(Tag &&other) noexcept {
 		std::swap(items, other.items);
 		std::swap(num_items, other.num_items);
 	}
@@ -94,21 +94,21 @@ struct Tag {
 	 * Returns true if the tag contains no items.  This ignores
 	 * the "duration" attribute.
 	 */
-	bool IsEmpty() const {
+	bool IsEmpty() const noexcept {
 		return num_items == 0;
 	}
 
 	/**
 	 * Returns true if the tag contains any information.
 	 */
-	bool IsDefined() const {
+	bool IsDefined() const noexcept {
 		return !IsEmpty() || !duration.IsNegative();
 	}
 
 	/**
 	 * Clear everything, as if this was a new Tag object.
 	 */
-	void Clear();
+	void Clear() noexcept;
 
 	/**
 	 * Merges the data from two tags.  If both tags share data for the
@@ -149,7 +149,7 @@ struct Tag {
 	 * there is no such value, returns an empty string.
 	 */
 	gcc_pure
-	const char *GetSortValue(TagType type) const;
+	const char *GetSortValue(TagType type) const noexcept;
 
 	class const_iterator {
 		friend struct Tag;

test/test_queue_priority.cxx

@@ -9,7 +9,7 @@
 #include <cppunit/extensions/HelperMacros.h>
 
 Tag::Tag(const Tag &) {}
-void Tag::Clear() {}
+void Tag::Clear() noexcept {}
 
 static void
 check_descending_priority(const Queue *queue,