Don't return reference on copy assignment operators

We prefer to prevent using chained assignment (`T a = b = c = T();`) as this
can lead to confusing code and subtle bugs.

According to https://en.wikipedia.org/wiki/Assignment_operator_(C%2B%2B), C++
allows any arbitrary return type, so this is standard compliant.

This could be re-assessed if/when we have an actual need for a behavior more
akin to that of the C++ STL, for now this PR simply changes a handful of
cases which were inconsistent with the rest of the codebase (`void` return
type was already the most common case prior to this commit).
This commit is contained in:
Rémi Verschelde
2021-11-30 15:19:26 +01:00
parent 2d118bd8b8
commit 7da392bcc5
28 changed files with 93 additions and 90 deletions

View File

@ -108,13 +108,10 @@ public:
_FORCE_INLINE_ Char16String() {}
_FORCE_INLINE_ Char16String(const Char16String &p_str) { _cowdata._ref(p_str._cowdata); }
_FORCE_INLINE_ Char16String &operator=(const Char16String &p_str) {
_cowdata._ref(p_str._cowdata);
return *this;
}
_FORCE_INLINE_ void operator=(const Char16String &p_str) { _cowdata._ref(p_str._cowdata); }
_FORCE_INLINE_ Char16String(const char16_t *p_cstr) { copy_from(p_cstr); }
Char16String &operator=(const char16_t *p_cstr);
void operator=(const char16_t *p_cstr);
bool operator<(const Char16String &p_right) const;
Char16String &operator+=(char16_t p_char);
int length() const { return size() ? size() - 1 : 0; }
@ -152,13 +149,10 @@ public:
_FORCE_INLINE_ CharString() {}
_FORCE_INLINE_ CharString(const CharString &p_str) { _cowdata._ref(p_str._cowdata); }
_FORCE_INLINE_ CharString &operator=(const CharString &p_str) {
_cowdata._ref(p_str._cowdata);
return *this;
}
_FORCE_INLINE_ void operator=(const CharString &p_str) { _cowdata._ref(p_str._cowdata); }
_FORCE_INLINE_ CharString(const char *p_cstr) { copy_from(p_cstr); }
CharString &operator=(const char *p_cstr);
void operator=(const char *p_cstr);
bool operator<(const CharString &p_right) const;
CharString &operator+=(char p_char);
int length() const { return size() ? size() - 1 : 0; }
@ -442,11 +436,7 @@ public:
_FORCE_INLINE_ String() {}
_FORCE_INLINE_ String(const String &p_str) { _cowdata._ref(p_str._cowdata); }
String &operator=(const String &p_str) {
_cowdata._ref(p_str._cowdata);
return *this;
}
_FORCE_INLINE_ void operator=(const String &p_str) { _cowdata._ref(p_str._cowdata); }
Vector<uint8_t> to_ascii_buffer() const;
Vector<uint8_t> to_utf8_buffer() const;