Merging r261365:

[oota-llvm.git] / unittests / Support / RegexTest.cpp

diff --git a/unittests/Support/RegexTest.cpp b/unittests/Support/RegexTest.cpp
index 65b66c3eee88567f10d9a9b9f5851a304a965484..c045c49bc3d7cde5c3ce504ae324da649d674038 100644 (file)
--- a/unittests/Support/RegexTest.cpp
+++ b/unittests/Support/RegexTest.cpp
@@ -7,9 +7,9 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "gtest/gtest.h"
 #include "llvm/Support/Regex.h"
 #include "llvm/ADT/SmallVector.h"
+#include "gtest/gtest.h"
 #include <cstring>
 
 using namespace llvm;
@@ -51,7 +51,6 @@ TEST_F(RegexTest, Basics) {
   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';
@@ -62,6 +61,28 @@ TEST_F(RegexTest, Basics) {
   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;
 
@@ -69,26 +90,67 @@ TEST_F(RegexTest, Substitution) {
 
   // Standard Escapes
   EXPECT_EQ("a\\ber", Regex("[0-9]+").sub("\\\\", "a1234ber", &Error));
-  EXPECT_EQ(Error, "");
+  EXPECT_EQ("", Error);
   EXPECT_EQ("a\nber", Regex("[0-9]+").sub("\\n", "a1234ber", &Error));
-  EXPECT_EQ(Error, "");
+  EXPECT_EQ("", Error);
   EXPECT_EQ("a\tber", Regex("[0-9]+").sub("\\t", "a1234ber", &Error));
-  EXPECT_EQ(Error, "");
+  EXPECT_EQ("", Error);
   EXPECT_EQ("ajber", Regex("[0-9]+").sub("\\j", "a1234ber", &Error));
-  EXPECT_EQ(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("", Error);
 
   EXPECT_EQ("a1234ber", Regex("a([0-9]+)b").sub("a\\1b", "a1234ber", &Error));
-  EXPECT_EQ(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$"));
+  EXPECT_FALSE(Regex::isLiteralERE("a|bc"));
+  EXPECT_FALSE(Regex::isLiteralERE("abc*"));
+  EXPECT_FALSE(Regex::isLiteralERE("abc+"));
+  EXPECT_FALSE(Regex::isLiteralERE("abc?"));
+  EXPECT_FALSE(Regex::isLiteralERE("abc."));
+  EXPECT_FALSE(Regex::isLiteralERE("a[bc]"));
+  EXPECT_FALSE(Regex::isLiteralERE("abc\\1"));
+  EXPECT_FALSE(Regex::isLiteralERE("abc{1,2}"));
+}
+
+TEST_F(RegexTest, Escape) {
+  EXPECT_EQ("a\\[bc\\]", Regex::escape("a[bc]"));
+  EXPECT_EQ("abc\\{1\\\\,2\\}", Regex::escape("abc{1\\,2}"));
+}
+
+TEST_F(RegexTest, IsValid) {
+  std::string Error;
+  EXPECT_FALSE(Regex("(foo").isValid(Error));
+  EXPECT_EQ("parentheses not balanced", Error);
+  EXPECT_FALSE(Regex("a[b-").isValid(Error));
+  EXPECT_EQ("invalid character range", Error);
+}
+
+TEST_F(RegexTest, MoveConstruct) {
+  Regex r1("^[0-9]+$");
+  Regex r2(std::move(r1));
+  EXPECT_TRUE(r2.match("916"));
+}
+
+TEST_F(RegexTest, MoveAssign) {
+  Regex r1("^[0-9]+$");
+  Regex r2("abc");
+  r2 = std::move(r1);
+  EXPECT_TRUE(r2.match("916"));
+}
+
 }