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95 lines
2.7 KiB
C++
95 lines
2.7 KiB
C++
//===- llvm/unittest/Support/RegexTest.cpp - Regex tests --===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "gtest/gtest.h"
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#include "llvm/Support/Regex.h"
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#include "llvm/ADT/SmallVector.h"
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#include <cstring>
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using namespace llvm;
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namespace {
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class RegexTest : public ::testing::Test {
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};
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TEST_F(RegexTest, Basics) {
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Regex r1("^[0-9]+$");
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EXPECT_TRUE(r1.match("916"));
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EXPECT_TRUE(r1.match("9"));
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EXPECT_FALSE(r1.match("9a"));
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SmallVector<StringRef, 1> Matches;
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Regex r2("[0-9]+");
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EXPECT_TRUE(r2.match("aa216b", &Matches));
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EXPECT_EQ(1u, Matches.size());
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EXPECT_EQ("216", Matches[0].str());
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Regex r3("[0-9]+([a-f])?:([0-9]+)");
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EXPECT_TRUE(r3.match("9a:513b", &Matches));
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EXPECT_EQ(3u, Matches.size());
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EXPECT_EQ("9a:513", Matches[0].str());
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EXPECT_EQ("a", Matches[1].str());
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EXPECT_EQ("513", Matches[2].str());
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EXPECT_TRUE(r3.match("9:513b", &Matches));
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EXPECT_EQ(3u, Matches.size());
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EXPECT_EQ("9:513", Matches[0].str());
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EXPECT_EQ("", Matches[1].str());
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EXPECT_EQ("513", Matches[2].str());
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Regex r4("a[^b]+b");
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std::string String="axxb";
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String[2] = '\0';
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EXPECT_FALSE(r4.match("abb"));
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EXPECT_TRUE(r4.match(String, &Matches));
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EXPECT_EQ(1u, Matches.size());
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EXPECT_EQ(String, Matches[0].str());
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std::string NulPattern="X[0-9]+X([a-f])?:([0-9]+)";
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String="YX99a:513b";
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NulPattern[7] = '\0';
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Regex r5(NulPattern);
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EXPECT_FALSE(r5.match(String));
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EXPECT_FALSE(r5.match("X9"));
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String[3]='\0';
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EXPECT_TRUE(r5.match(String));
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}
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TEST_F(RegexTest, Substitution) {
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std::string Error;
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EXPECT_EQ("aNUMber", Regex("[0-9]+").sub("NUM", "a1234ber"));
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// Standard Escapes
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EXPECT_EQ("a\\ber", Regex("[0-9]+").sub("\\\\", "a1234ber", &Error));
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EXPECT_EQ(Error, "");
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EXPECT_EQ("a\nber", Regex("[0-9]+").sub("\\n", "a1234ber", &Error));
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EXPECT_EQ(Error, "");
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EXPECT_EQ("a\tber", Regex("[0-9]+").sub("\\t", "a1234ber", &Error));
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EXPECT_EQ(Error, "");
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EXPECT_EQ("ajber", Regex("[0-9]+").sub("\\j", "a1234ber", &Error));
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EXPECT_EQ(Error, "");
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EXPECT_EQ("aber", Regex("[0-9]+").sub("\\", "a1234ber", &Error));
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EXPECT_EQ(Error, "replacement string contained trailing backslash");
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// Backreferences
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EXPECT_EQ("aa1234bber", Regex("a[0-9]+b").sub("a\\0b", "a1234ber", &Error));
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EXPECT_EQ(Error, "");
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EXPECT_EQ("a1234ber", Regex("a([0-9]+)b").sub("a\\1b", "a1234ber", &Error));
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EXPECT_EQ(Error, "");
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EXPECT_EQ("aber", Regex("a[0-9]+b").sub("a\\100b", "a1234ber", &Error));
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EXPECT_EQ(Error, "invalid backreference string '100'");
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}
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}
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