-/// isString - This method returns true if the array is an array of i8, and
-/// if the elements of the array are all ConstantInt's.
-bool ConstantArray::isString() const {
- // Check the element type for i8...
- if (!getType()->getElementType()->isIntegerTy(8))
- return false;
- // Check the elements to make sure they are all integers, not constant
- // expressions.
- for (unsigned i = 0, e = getNumOperands(); i != e; ++i)
- if (!isa<ConstantInt>(getOperand(i)))
- return false;
- return true;
-}
-
-/// isCString - This method returns true if the array is a string (see
-/// isString) and it ends in a null byte \\0 and does not contains any other
-/// null bytes except its terminator.
-bool ConstantArray::isCString() const {
- // Check the element type for i8...
- if (!getType()->getElementType()->isIntegerTy(8))
- return false;
-
- // Last element must be a null.
- if (!getOperand(getNumOperands()-1)->isNullValue())
- return false;
- // Other elements must be non-null integers.
- for (unsigned i = 0, e = getNumOperands()-1; i != e; ++i) {
- if (!isa<ConstantInt>(getOperand(i)))
- return false;
- if (getOperand(i)->isNullValue())
- return false;
- }
- return true;
-}
-
-
-/// convertToString - Helper function for getAsString() and getAsCString().
-static std::string convertToString(const User *U, unsigned len) {
- std::string Result;
- Result.reserve(len);
- for (unsigned i = 0; i != len; ++i)
- Result.push_back((char)cast<ConstantInt>(U->getOperand(i))->getZExtValue());
- return Result;
-}
-
-/// getAsString - If this array is isString(), then this method converts the
-/// array to an std::string and returns it. Otherwise, it asserts out.
-///
-std::string ConstantArray::getAsString() const {
- assert(isString() && "Not a string!");
- return convertToString(this, getNumOperands());
-}
-
-
-/// getAsCString - If this array is isCString(), then this method converts the
-/// array (without the trailing null byte) to an std::string and returns it.
-/// Otherwise, it asserts out.
-///
-std::string ConstantArray::getAsCString() const {
- assert(isCString() && "Not a string!");
- return convertToString(this, getNumOperands() - 1);
-}
-