[libc][NFC] Mark a few methods of StringView to constexpr.
GitOrigin-RevId: d52e8708ae51d6a98c15a9c793ddf389ea50d370
diff --git a/src/__support/CPP/StringView.h b/src/__support/CPP/StringView.h
index d0bca36..a82cec4 100644
--- a/src/__support/CPP/StringView.h
+++ b/src/__support/CPP/StringView.h
@@ -38,11 +38,11 @@
// size_type.
static constexpr size_t npos = -1;
- StringView() : Data(nullptr), Len(0) {}
+ constexpr StringView() : Data(nullptr), Len(0) {}
// Assumes Str is a null-terminated string. The length of the string does
// not include the terminating null character.
- explicit StringView(const char *Str) : Data(Str), Len(0) {
+ explicit constexpr StringView(const char *Str) : Data(Str), Len(0) {
if (Str == nullptr)
return;
for (const char *D = Data; *D != '\0'; ++D, ++Len)
@@ -51,20 +51,20 @@
Data = nullptr;
}
- explicit StringView(const char *Str, size_t N)
+ explicit constexpr StringView(const char *Str, size_t N)
: Data(N ? Str : nullptr), Len(Str == nullptr ? 0 : N) {}
// Ctor for raw literal.
template <size_t N>
StringView(const char (&Str)[N]) : StringView(Str, N - 1) {}
- const char *data() const { return Data; }
+ constexpr const char *data() const { return Data; }
// Returns the size of the StringView.
- size_t size() const { return Len; }
+ constexpr size_t size() const { return Len; }
// Returns whether the StringView is empty.
- bool empty() const { return Len == 0; }
+ constexpr bool empty() const { return Len == 0; }
// Returns an iterator to the first character of the view.
const char *begin() const { return Data; }
@@ -76,7 +76,7 @@
// Returns a const reference to the character at specified location pos.
// No bounds checking is performed: the behavior is undefined if pos >=
// size().
- const char &operator[](size_t Index) const { return Data[Index]; }
+ constexpr const char &operator[](size_t Index) const { return Data[Index]; }
/// compare - Compare two strings; the result is -1, 0, or 1 if this string
/// is lexicographically less than, equal to, or greater than the \p Other.
