LLVM  6.0.0svn
Public Member Functions | List of all members
llvm::StringLiteral Class Reference

A wrapper around a string literal that serves as a proxy for constructing global tables of StringRefs with the length computed at compile time. More...

#include "llvm/ADT/StringRef.h"

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Public Member Functions

template<size_t N>
constexpr StringLiteral (const char(&Str)[N])
 
- Public Member Functions inherited from llvm::StringRef
iterator begin () const
 
iterator end () const
 
const unsigned charbytes_begin () const
 
const unsigned charbytes_end () const
 
iterator_range< const unsigned char * > bytes () const
 
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE const chardata () const
 data - Get a pointer to the start of the string (which may not be null terminated). More...
 
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE bool empty () const
 empty - Check if the string is empty. More...
 
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE size_t size () const
 size - Get the string size. More...
 
LLVM_NODISCARD char front () const
 front - Get the first character in the string. More...
 
LLVM_NODISCARD char back () const
 back - Get the last character in the string. More...
 
template<typename Allocator >
LLVM_NODISCARD StringRef copy (Allocator &A) const
 
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE bool equals (StringRef RHS) const
 equals - Check for string equality, this is more efficient than compare() when the relative ordering of inequal strings isn't needed. More...
 
LLVM_NODISCARD bool equals_lower (StringRef RHS) const
 equals_lower - Check for string equality, ignoring case. More...
 
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE int compare (StringRef RHS) const
 compare - Compare two strings; the result is -1, 0, or 1 if this string is lexicographically less than, equal to, or greater than the RHS. More...
 
LLVM_NODISCARD int compare_lower (StringRef RHS) const
 compare_lower - Compare two strings, ignoring case. More...
 
LLVM_NODISCARD int compare_numeric (StringRef RHS) const
 compare_numeric - Compare two strings, treating sequences of digits as numbers. More...
 
LLVM_NODISCARD unsigned edit_distance (StringRef Other, bool AllowReplacements=true, unsigned MaxEditDistance=0) const
 Determine the edit distance between this string and another string. More...
 
LLVM_NODISCARD std::string str () const
 str - Get the contents as an std::string. More...
 
LLVM_NODISCARD std::string lower () const
 
LLVM_NODISCARD std::string upper () const
 Convert the given ASCII string to uppercase. More...
 
LLVM_NODISCARD char operator[] (size_t Index) const
 
template<typename T >
std::enable_if< std::is_same< T, std::string >::value, StringRef >::type & operator= (T &&Str)=delete
 Disallow accidental assignment from a temporary std::string. More...
 
 operator std::string () const
 
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE bool startswith (StringRef Prefix) const
 Check if this string starts with the given Prefix. More...
 
LLVM_NODISCARD bool startswith_lower (StringRef Prefix) const
 Check if this string starts with the given Prefix, ignoring case. More...
 
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE bool endswith (StringRef Suffix) const
 Check if this string ends with the given Suffix. More...
 
LLVM_NODISCARD bool endswith_lower (StringRef Suffix) const
 Check if this string ends with the given Suffix, ignoring case. More...
 
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE size_t find (char C, size_t From=0) const
 Search for the first character C in the string. More...
 
LLVM_NODISCARD size_t find_lower (char C, size_t From=0) const
 Search for the first character C in the string, ignoring case. More...
 
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE size_t find_if (function_ref< bool(char)> F, size_t From=0) const
 Search for the first character satisfying the predicate F. More...
 
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE size_t find_if_not (function_ref< bool(char)> F, size_t From=0) const
 Search for the first character not satisfying the predicate F. More...
 
LLVM_NODISCARD size_t find (StringRef Str, size_t From=0) const
 Search for the first string Str in the string. More...
 
LLVM_NODISCARD size_t find_lower (StringRef Str, size_t From=0) const
 Search for the first string Str in the string, ignoring case. More...
 
LLVM_NODISCARD size_t rfind (char C, size_t From=npos) const
 Search for the last character C in the string. More...
 
LLVM_NODISCARD size_t rfind_lower (char C, size_t From=npos) const
 Search for the last character C in the string, ignoring case. More...
 
LLVM_NODISCARD size_t rfind (StringRef Str) const
 Search for the last string Str in the string. More...
 
LLVM_NODISCARD size_t rfind_lower (StringRef Str) const
 Search for the last string Str in the string, ignoring case. More...
 
LLVM_NODISCARD size_t find_first_of (char C, size_t From=0) const
 Find the first character in the string that is C, or npos if not found. More...
 
LLVM_NODISCARD size_t find_first_of (StringRef Chars, size_t From=0) const
 Find the first character in the string that is in Chars, or npos if not found. More...
 
LLVM_NODISCARD size_t find_first_not_of (char C, size_t From=0) const
 Find the first character in the string that is not C or npos if not found. More...
 
LLVM_NODISCARD size_t find_first_not_of (StringRef Chars, size_t From=0) const
 Find the first character in the string that is not in the string Chars, or npos if not found. More...
 
LLVM_NODISCARD size_t find_last_of (char C, size_t From=npos) const
 Find the last character in the string that is C, or npos if not found. More...
 
LLVM_NODISCARD size_t find_last_of (StringRef Chars, size_t From=npos) const
 Find the last character in the string that is in C, or npos if not found. More...
 
LLVM_NODISCARD size_t find_last_not_of (char C, size_t From=npos) const
 Find the last character in the string that is not C, or npos if not found. More...
 
LLVM_NODISCARD size_t find_last_not_of (StringRef Chars, size_t From=npos) const
 Find the last character in the string that is not in Chars, or npos if not found. More...
 
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE bool contains (StringRef Other) const
 Return true if the given string is a substring of *this, and false otherwise. More...
 
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE bool contains (char C) const
 Return true if the given character is contained in *this, and false otherwise. More...
 
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE bool contains_lower (StringRef Other) const
 Return true if the given string is a substring of *this, and false otherwise. More...
 
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE bool contains_lower (char C) const
 Return true if the given character is contained in *this, and false otherwise. More...
 
LLVM_NODISCARD size_t count (char C) const
 Return the number of occurrences of C in the string. More...
 
size_t count (StringRef Str) const
 Return the number of non-overlapped occurrences of Str in the string. More...
 
template<typename T >
std::enable_if< std::numeric_limits< T >::is_signed, bool >::type getAsInteger (unsigned Radix, T &Result) const
 Parse the current string as an integer of the specified radix. More...
 
template<typename T >
std::enable_if<!std::numeric_limits< T >::is_signed, bool >::type getAsInteger (unsigned Radix, T &Result) const
 
template<typename T >
std::enable_if< std::numeric_limits< T >::is_signed, bool >::type consumeInteger (unsigned Radix, T &Result)
 Parse the current string as an integer of the specified radix. More...
 
template<typename T >
std::enable_if<!std::numeric_limits< T >::is_signed, bool >::type consumeInteger (unsigned Radix, T &Result)
 
bool getAsInteger (unsigned Radix, APInt &Result) const
 Parse the current string as an integer of the specified Radix, or of an autosensed radix if the Radix given is 0. More...
 
bool getAsDouble (double &Result, bool AllowInexact=true) const
 Parse the current string as an IEEE double-precision floating point value. More...
 
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE StringRef substr (size_t Start, size_t N=npos) const
 Return a reference to the substring from [Start, Start + N). More...
 
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE StringRef take_front (size_t N=1) const
 Return a StringRef equal to 'this' but with only the first N elements remaining. More...
 
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE StringRef take_back (size_t N=1) const
 Return a StringRef equal to 'this' but with only the last N elements remaining. More...
 
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE StringRef take_while (function_ref< bool(char)> F) const
 Return the longest prefix of 'this' such that every character in the prefix satisfies the given predicate. More...
 
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE StringRef take_until (function_ref< bool(char)> F) const
 Return the longest prefix of 'this' such that no character in the prefix satisfies the given predicate. More...
 
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE StringRef drop_front (size_t N=1) const
 Return a StringRef equal to 'this' but with the first N elements dropped. More...
 
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE StringRef drop_back (size_t N=1) const
 Return a StringRef equal to 'this' but with the last N elements dropped. More...
 
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE StringRef drop_while (function_ref< bool(char)> F) const
 Return a StringRef equal to 'this', but with all characters satisfying the given predicate dropped from the beginning of the string. More...
 
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE StringRef drop_until (function_ref< bool(char)> F) const
 Return a StringRef equal to 'this', but with all characters not satisfying the given predicate dropped from the beginning of the string. More...
 
LLVM_ATTRIBUTE_ALWAYS_INLINE bool consume_front (StringRef Prefix)
 Returns true if this StringRef has the given prefix and removes that prefix. More...
 
LLVM_ATTRIBUTE_ALWAYS_INLINE bool consume_back (StringRef Suffix)
 Returns true if this StringRef has the given suffix and removes that suffix. More...
 
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE StringRef slice (size_t Start, size_t End) const
 Return a reference to the substring from [Start, End). More...
 
LLVM_NODISCARD std::pair< StringRef, StringRefsplit (char Separator) const
 Split into two substrings around the first occurrence of a separator character. More...
 
LLVM_NODISCARD std::pair< StringRef, StringRefsplit (StringRef Separator) const
 Split into two substrings around the first occurrence of a separator string. More...
 
void split (SmallVectorImpl< StringRef > &A, StringRef Separator, int MaxSplit=-1, bool KeepEmpty=true) const
 Split into substrings around the occurrences of a separator string. More...
 
void split (SmallVectorImpl< StringRef > &A, char Separator, int MaxSplit=-1, bool KeepEmpty=true) const
 Split into substrings around the occurrences of a separator character. More...
 
LLVM_NODISCARD std::pair< StringRef, StringRefrsplit (char Separator) const
 Split into two substrings around the last occurrence of a separator character. More...
 
LLVM_NODISCARD StringRef ltrim (char Char) const
 Return string with consecutive Char characters starting from the the left removed. More...
 
LLVM_NODISCARD StringRef ltrim (StringRef Chars=" \\\) const
 Return string with consecutive characters in Chars starting from the left removed. More...
 
LLVM_NODISCARD StringRef rtrim (char Char) const
 Return string with consecutive Char characters starting from the right removed. More...
 
LLVM_NODISCARD StringRef rtrim (StringRef Chars=" \\\) const
 Return string with consecutive characters in Chars starting from the right removed. More...
 
LLVM_NODISCARD StringRef trim (char Char) const
 Return string with consecutive Char characters starting from the left and right removed. More...
 
LLVM_NODISCARD StringRef trim (StringRef Chars=" \\\) const
 Return string with consecutive characters in Chars starting from the left and right removed. More...
 
 StringRef ()=default
 Construct an empty string ref. More...
 
 StringRef (std::nullptr_t)=delete
 Disable conversion from nullptr. More...
 
LLVM_ATTRIBUTE_ALWAYS_INLINE StringRef (const char *Str)
 Construct a string ref from a cstring. More...
 
LLVM_ATTRIBUTE_ALWAYS_INLINE constexpr StringRef (const char *data, size_t length)
 Construct a string ref from a pointer and length. More...
 
LLVM_ATTRIBUTE_ALWAYS_INLINE StringRef (const std::string &Str)
 Construct a string ref from an std::string. More...
 

Additional Inherited Members

- Public Types inherited from llvm::StringRef
using iterator = const char *
 
using const_iterator = const char *
 
using size_type = size_t
 
- Static Public Member Functions inherited from llvm::StringRef
static StringRef withNullAsEmpty (const char *data)
 
- Static Public Attributes inherited from llvm::StringRef
static const size_t npos = ~size_t(0)
 

Detailed Description

A wrapper around a string literal that serves as a proxy for constructing global tables of StringRefs with the length computed at compile time.

In order to avoid the invocation of a global constructor, StringLiteral should only be used in a constexpr context, as such:

constexpr StringLiteral S("test");

Definition at line 857 of file StringRef.h.

Constructor & Destructor Documentation

◆ StringLiteral()

template<size_t N>
constexpr llvm::StringLiteral::StringLiteral ( const char(&)  Str[N])
inline

Definition at line 860 of file StringRef.h.

References LLVM_ATTRIBUTE_ALWAYS_INLINE.


The documentation for this class was generated from the following file: