| Chandler Carruth | f8c5281 | 2013-12-27 04:28:57 +0000 | [diff] [blame] | 1 | //===- LineIterator.cpp - Unit tests --------------------------------------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | |
| 10 | #include "llvm/Support/LineIterator.h" |
| 11 | #include "llvm/ADT/OwningPtr.h" |
| 12 | #include "llvm/Support/MemoryBuffer.h" |
| 13 | #include "gtest/gtest.h" |
| 14 | |
| 15 | using namespace llvm; |
| 16 | using namespace llvm::sys; |
| 17 | |
| 18 | namespace { |
| 19 | |
| 20 | TEST(LineIteratorTest, Basic) { |
| 21 | OwningPtr<MemoryBuffer> Buffer(MemoryBuffer::getMemBuffer("line 1\n" |
| 22 | "line 2\n" |
| 23 | "line 3")); |
| 24 | |
| 25 | line_iterator I = line_iterator(*Buffer), E; |
| 26 | |
| 27 | EXPECT_FALSE(I.is_at_eof()); |
| 28 | EXPECT_NE(E, I); |
| 29 | |
| 30 | EXPECT_EQ("line 1", *I); |
| 31 | EXPECT_EQ(1, I.line_number()); |
| 32 | ++I; |
| 33 | EXPECT_EQ("line 2", *I); |
| 34 | EXPECT_EQ(2, I.line_number()); |
| 35 | ++I; |
| 36 | EXPECT_EQ("line 3", *I); |
| 37 | EXPECT_EQ(3, I.line_number()); |
| 38 | ++I; |
| 39 | |
| 40 | EXPECT_TRUE(I.is_at_eof()); |
| 41 | EXPECT_EQ(E, I); |
| 42 | } |
| 43 | |
| 44 | TEST(LineIteratorTest, CommentSkipping) { |
| 45 | OwningPtr<MemoryBuffer> Buffer(MemoryBuffer::getMemBuffer("line 1\n" |
| 46 | "line 2\n" |
| 47 | "# Comment 1\n" |
| 48 | "line 4\n" |
| 49 | "# Comment 2")); |
| 50 | |
| 51 | line_iterator I = line_iterator(*Buffer, '#'), E; |
| 52 | |
| 53 | EXPECT_FALSE(I.is_at_eof()); |
| 54 | EXPECT_NE(E, I); |
| 55 | |
| 56 | EXPECT_EQ("line 1", *I); |
| 57 | EXPECT_EQ(1, I.line_number()); |
| 58 | ++I; |
| 59 | EXPECT_EQ("line 2", *I); |
| 60 | EXPECT_EQ(2, I.line_number()); |
| 61 | ++I; |
| 62 | EXPECT_EQ("line 4", *I); |
| 63 | EXPECT_EQ(4, I.line_number()); |
| 64 | ++I; |
| 65 | |
| 66 | EXPECT_TRUE(I.is_at_eof()); |
| 67 | EXPECT_EQ(E, I); |
| 68 | } |
| 69 | |
| 70 | TEST(LineIteratorTest, BlankSkipping) { |
| 71 | OwningPtr<MemoryBuffer> Buffer(MemoryBuffer::getMemBuffer("\n\n\n" |
| 72 | "line 1\n" |
| 73 | "\n\n\n" |
| 74 | "line 2\n" |
| 75 | "\n\n\n")); |
| 76 | |
| 77 | line_iterator I = line_iterator(*Buffer), E; |
| 78 | |
| 79 | EXPECT_FALSE(I.is_at_eof()); |
| 80 | EXPECT_NE(E, I); |
| 81 | |
| 82 | EXPECT_EQ("line 1", *I); |
| 83 | EXPECT_EQ(4, I.line_number()); |
| 84 | ++I; |
| 85 | EXPECT_EQ("line 2", *I); |
| 86 | EXPECT_EQ(8, I.line_number()); |
| 87 | ++I; |
| 88 | |
| 89 | EXPECT_TRUE(I.is_at_eof()); |
| 90 | EXPECT_EQ(E, I); |
| 91 | } |
| 92 | |
| 93 | TEST(LineIteratorTest, EmptyBuffers) { |
| 94 | OwningPtr<MemoryBuffer> Buffer(MemoryBuffer::getMemBuffer("")); |
| 95 | EXPECT_TRUE(line_iterator(*Buffer).is_at_eof()); |
| 96 | EXPECT_EQ(line_iterator(), line_iterator(*Buffer)); |
| 97 | |
| 98 | Buffer.reset(MemoryBuffer::getMemBuffer("\n\n\n")); |
| 99 | EXPECT_TRUE(line_iterator(*Buffer).is_at_eof()); |
| 100 | EXPECT_EQ(line_iterator(), line_iterator(*Buffer)); |
| 101 | |
| 102 | Buffer.reset(MemoryBuffer::getMemBuffer("# foo\n" |
| 103 | "\n" |
| 104 | "# bar")); |
| 105 | EXPECT_TRUE(line_iterator(*Buffer, '#').is_at_eof()); |
| 106 | EXPECT_EQ(line_iterator(), line_iterator(*Buffer, '#')); |
| 107 | |
| 108 | Buffer.reset(MemoryBuffer::getMemBuffer("\n" |
| 109 | "# baz\n" |
| 110 | "\n")); |
| 111 | EXPECT_TRUE(line_iterator(*Buffer, '#').is_at_eof()); |
| 112 | EXPECT_EQ(line_iterator(), line_iterator(*Buffer, '#')); |
| 113 | } |
| 114 | |
| 115 | } // anonymous namespace |