Changes in directory llvm/lib/VMCore:
Constants.cpp updated: 1.166 -> 1.167
---
Log message:
Add isCString() - returns true if a ConstantArray is a CString.
---
Diffs of the changes: (+13 -0)
Constants.cpp | 13 +++++++++++++
1 files changed, 13 insertions(+)
Index: llvm/lib/VMCore/Constants.cpp
diff -u llvm/lib/VMCore/Constants.cpp:1.166 llvm/lib/VMCore/Constants.cpp:1.167
--- llvm/lib/VMCore/Constants.cpp:1.166 Thu Oct 26 01:15:43 2006
+++ llvm/lib/VMCore/Constants.cpp Thu Oct 26 14:15:05 2006
@@ -1073,6 +1073,19 @@
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 {
+ if (!isString()) return false;
+ // This is safe because a ConstantArray cannot be a zero array.
+ for (unsigned i = 0, e = getNumOperands()-1; i != e; ++i)
+ if (cast<ConstantInt>(getOperand(i))->getZExtValue() == 0)
+ return false;
+ return true;
+}
+
+
// getAsString - If the sub-element type of this array is either sbyte or
ubyte,
// then this method converts the array to an std::string and returns it.
// Otherwise, it asserts out.
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