From eb85711e43a01d1e0a4f0a3a9642c583f1a6a37a Mon Sep 17 00:00:00 2001 From: Daniel Dunbar Date: Wed, 17 Feb 2010 20:08:42 +0000 Subject: Add Regex::sub, for doing regular expression substitution with backreferences. llvm-svn: 96503 --- llvm/unittests/Support/RegexTest.cpp | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) (limited to 'llvm/unittests/Support/RegexTest.cpp') diff --git a/llvm/unittests/Support/RegexTest.cpp b/llvm/unittests/Support/RegexTest.cpp index 44c7e5590c7..65b66c3eee8 100644 --- a/llvm/unittests/Support/RegexTest.cpp +++ b/llvm/unittests/Support/RegexTest.cpp @@ -62,4 +62,33 @@ TEST_F(RegexTest, Basics) { EXPECT_TRUE(r5.match(String)); } +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'"); +} + } -- cgit v1.2.3