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author | Chris Lattner <sabre@nondot.org> | 2012-01-24 09:01:07 +0000 |
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committer | Chris Lattner <sabre@nondot.org> | 2012-01-24 09:01:07 +0000 |
commit | 62339073127df4579905f551f61c132cf21d2aad (patch) | |
tree | 9fe0763ca88fdd7b369ec6437e2c04f64db5057c /include/llvm | |
parent | a97a5eabe2a412d7cc078f94b7df7ee8ac840853 (diff) | |
download | external_llvm-62339073127df4579905f551f61c132cf21d2aad.zip external_llvm-62339073127df4579905f551f61c132cf21d2aad.tar.gz external_llvm-62339073127df4579905f551f61c132cf21d2aad.tar.bz2 |
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
Diffstat (limited to 'include/llvm')
-rw-r--r-- | include/llvm/Constants.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/include/llvm/Constants.h b/include/llvm/Constants.h index 958ebb8..21400e7 100644 --- a/include/llvm/Constants.h +++ b/include/llvm/Constants.h @@ -371,6 +371,9 @@ public: return reinterpret_cast<ArrayType*>(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: |