//
//===----------------------------------------------------------------------===//
-#include "gtest/gtest.h"
#include "llvm/Support/Regex.h"
#include "llvm/ADT/SmallVector.h"
+#include "gtest/gtest.h"
#include <cstring>
using namespace llvm;
EXPECT_EQ(1u, Matches.size());
EXPECT_EQ(String, Matches[0].str());
-
std::string NulPattern="X[0-9]+X([a-f])?:([0-9]+)";
String="YX99a:513b";
NulPattern[7] = '\0';
EXPECT_TRUE(r5.match(String));
}
+TEST_F(RegexTest, Backreferences) {
+ Regex r1("([a-z]+)_\\1");
+ SmallVector<StringRef, 4> Matches;
+ EXPECT_TRUE(r1.match("abc_abc", &Matches));
+ EXPECT_EQ(2u, Matches.size());
+ EXPECT_FALSE(r1.match("abc_ab", &Matches));
+
+ Regex r2("a([0-9])b\\1c\\1");
+ EXPECT_TRUE(r2.match("a4b4c4", &Matches));
+ EXPECT_EQ(2u, Matches.size());
+ EXPECT_EQ("4", Matches[1].str());
+ EXPECT_FALSE(r2.match("a2b2c3"));
+
+ Regex r3("a([0-9])([a-z])b\\1\\2");
+ EXPECT_TRUE(r3.match("a6zb6z", &Matches));
+ EXPECT_EQ(3u, Matches.size());
+ EXPECT_EQ("6", Matches[1].str());
+ EXPECT_EQ("z", Matches[2].str());
+ EXPECT_FALSE(r3.match("a6zb6y"));
+ EXPECT_FALSE(r3.match("a6zb7z"));
+}
+
+TEST_F(RegexTest, Substitution) {
+ std::string Error;
+
+ EXPECT_EQ("aNUMber", Regex("[0-9]+").sub("NUM", "a1234ber"));
+
+ // Standard Escapes
+ EXPECT_EQ("a\\ber", Regex("[0-9]+").sub("\\\\", "a1234ber", &Error));
+ EXPECT_EQ(Error, "");
+ EXPECT_EQ("a\nber", Regex("[0-9]+").sub("\\n", "a1234ber", &Error));
+ EXPECT_EQ(Error, "");
+ EXPECT_EQ("a\tber", Regex("[0-9]+").sub("\\t", "a1234ber", &Error));
+ EXPECT_EQ(Error, "");
+ EXPECT_EQ("ajber", Regex("[0-9]+").sub("\\j", "a1234ber", &Error));
+ EXPECT_EQ(Error, "");
+
+ EXPECT_EQ("aber", Regex("[0-9]+").sub("\\", "a1234ber", &Error));
+ EXPECT_EQ(Error, "replacement string contained trailing backslash");
+
+ // Backreferences
+ EXPECT_EQ("aa1234bber", Regex("a[0-9]+b").sub("a\\0b", "a1234ber", &Error));
+ EXPECT_EQ(Error, "");
+
+ EXPECT_EQ("a1234ber", Regex("a([0-9]+)b").sub("a\\1b", "a1234ber", &Error));
+ EXPECT_EQ(Error, "");
+
+ EXPECT_EQ("aber", Regex("a[0-9]+b").sub("a\\100b", "a1234ber", &Error));
+ EXPECT_EQ(Error, "invalid backreference string '100'");
+}
+
+TEST_F(RegexTest, IsLiteralERE) {
+ EXPECT_TRUE(Regex::isLiteralERE("abc"));
+ EXPECT_FALSE(Regex::isLiteralERE("a(bc)"));
+ EXPECT_FALSE(Regex::isLiteralERE("^abc"));
+ EXPECT_FALSE(Regex::isLiteralERE("abc$"));
+ EXPECT_FALSE(Regex::isLiteralERE("a|bc"));
+ EXPECT_FALSE(Regex::isLiteralERE("abc*"));
+ EXPECT_FALSE(Regex::isLiteralERE("abc+"));
+ EXPECT_FALSE(Regex::isLiteralERE("abc?"));
+ EXPECT_FALSE(Regex::isLiteralERE("abc."));
+ EXPECT_FALSE(Regex::isLiteralERE("a[bc]"));
+ EXPECT_FALSE(Regex::isLiteralERE("abc\\1"));
+ EXPECT_FALSE(Regex::isLiteralERE("abc{1,2}"));
+}
+
+TEST_F(RegexTest, IsValid) {
+ std::string Error;
+ EXPECT_FALSE(Regex("(foo").isValid(Error));
+ EXPECT_EQ("parentheses not balanced", Error);
+ EXPECT_FALSE(Regex("a[b-").isValid(Error));
+ EXPECT_EQ("invalid character range", Error);
+}
+
}