From 62339073127df4579905f551f61c132cf21d2aad Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Tue, 24 Jan 2012 09:01:07 +0000 Subject: Add various "string" methods to ConstantDataSequential, which have the same semantics as ConstantArray's but much more efficient because they don't have to return std::string's. The ConstantArray methods will eventually be removed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148792 91177308-0d34-0410-b5e6-96231b3b80d8 --- include/llvm/Constants.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) (limited to 'include/llvm/Constants.h') diff --git a/include/llvm/Constants.h b/include/llvm/Constants.h index 958ebb88c7..21400e774d 100644 --- a/include/llvm/Constants.h +++ b/include/llvm/Constants.h @@ -371,6 +371,9 @@ public: return reinterpret_cast(Value::getType()); } + // FIXME: String methods will eventually be removed. + + /// isString - This method returns true if the array is an array of i8 and /// the elements of the array are all ConstantInt's. bool isString() const; @@ -626,6 +629,30 @@ public: /// byte. uint64_t getElementByteSize() const; + + /// isString - This method returns true if this is an array of i8. + bool isString() const; + + /// isCString - This method returns true if the array "isString", ends with a + /// nul byte, and does not contains any other nul bytes. + bool isCString() const; + + /// getAsString - If this array is isString(), then this method returns the + /// array as a StringRef. Otherwise, it asserts out. + /// + StringRef getAsString() const; + + /// getAsCString - If this array is isCString(), then this method returns the + /// array (without the trailing null byte) as a StringRef. Otherwise, it + /// asserts out. + /// + StringRef getAsCString() const { + assert(isCString() && "Isn't a C string"); + StringRef Str = getAsString(); + return Str.substr(0, Str.size()-1); + } + + virtual void destroyConstant(); /// Methods for support type inquiry through isa, cast, and dyn_cast: -- cgit v1.2.3