This is useful when need to defer the construction,
e.g. using Regex as a member of class.
Differential revision: https://reviews.llvm.org/D24101
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@280339
91177308-0d34-0410-b5e6-
96231b3b80d8
#include <string>
using namespace llvm;
+Regex::Regex() : error(REG_BADPAT), preg(nullptr) {}
+
Regex::Regex(StringRef regex, unsigned Flags) {
unsigned flags = 0;
preg = new llvm_regex();
EXPECT_TRUE(r2.match("916"));
}
+TEST_F(RegexTest, NoArgConstructor) {
+ std::string Error;
+ Regex r1;
+ EXPECT_FALSE(r1.isValid(Error));
+ EXPECT_EQ("invalid regular expression", Error);
+ r1 = Regex("abc");
+ EXPECT_TRUE(r1.isValid(Error));
+}
+
}