Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1 | // Copyright 2006-2009 the V8 project authors. All rights reserved. |
| 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
| 28 | #include <stdlib.h> |
Teng-Hui Zhu | 3e5fa29 | 2010-11-09 16:16:48 -0800 | [diff] [blame^] | 29 | #include <stdio.h> |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 30 | |
| 31 | #include "v8.h" |
| 32 | |
| 33 | #include "token.h" |
| 34 | #include "scanner.h" |
Iain Merrick | 9ac36c9 | 2010-09-13 15:29:50 +0100 | [diff] [blame] | 35 | #include "parser.h" |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 36 | #include "utils.h" |
Iain Merrick | 9ac36c9 | 2010-09-13 15:29:50 +0100 | [diff] [blame] | 37 | #include "execution.h" |
Teng-Hui Zhu | 3e5fa29 | 2010-11-09 16:16:48 -0800 | [diff] [blame^] | 38 | #include "scanner.h" |
| 39 | #include "preparser.h" |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 40 | #include "cctest.h" |
| 41 | |
| 42 | namespace i = ::v8::internal; |
| 43 | |
| 44 | TEST(KeywordMatcher) { |
| 45 | struct KeywordToken { |
| 46 | const char* keyword; |
| 47 | i::Token::Value token; |
| 48 | }; |
| 49 | |
| 50 | static const KeywordToken keywords[] = { |
| 51 | #define KEYWORD(t, s, d) { s, i::Token::t }, |
| 52 | #define IGNORE(t, s, d) /* */ |
| 53 | TOKEN_LIST(IGNORE, KEYWORD, IGNORE) |
| 54 | #undef KEYWORD |
| 55 | { NULL, i::Token::IDENTIFIER } |
| 56 | }; |
| 57 | |
| 58 | static const char* future_keywords[] = { |
| 59 | #define FUTURE(t, s, d) s, |
| 60 | TOKEN_LIST(IGNORE, IGNORE, FUTURE) |
| 61 | #undef FUTURE |
| 62 | #undef IGNORE |
| 63 | NULL |
| 64 | }; |
| 65 | |
| 66 | KeywordToken key_token; |
| 67 | for (int i = 0; (key_token = keywords[i]).keyword != NULL; i++) { |
| 68 | i::KeywordMatcher matcher; |
| 69 | const char* keyword = key_token.keyword; |
| 70 | int length = i::StrLength(keyword); |
| 71 | for (int j = 0; j < length; j++) { |
| 72 | if (key_token.token == i::Token::INSTANCEOF && j == 2) { |
| 73 | // "in" is a prefix of "instanceof". It's the only keyword |
| 74 | // that is a prefix of another. |
| 75 | CHECK_EQ(i::Token::IN, matcher.token()); |
| 76 | } else { |
| 77 | CHECK_EQ(i::Token::IDENTIFIER, matcher.token()); |
| 78 | } |
| 79 | matcher.AddChar(keyword[j]); |
| 80 | } |
| 81 | CHECK_EQ(key_token.token, matcher.token()); |
| 82 | // Adding more characters will make keyword matching fail. |
| 83 | matcher.AddChar('z'); |
| 84 | CHECK_EQ(i::Token::IDENTIFIER, matcher.token()); |
| 85 | // Adding a keyword later will not make it match again. |
| 86 | matcher.AddChar('i'); |
| 87 | matcher.AddChar('f'); |
| 88 | CHECK_EQ(i::Token::IDENTIFIER, matcher.token()); |
| 89 | } |
| 90 | |
| 91 | // Future keywords are not recognized. |
| 92 | const char* future_keyword; |
| 93 | for (int i = 0; (future_keyword = future_keywords[i]) != NULL; i++) { |
| 94 | i::KeywordMatcher matcher; |
| 95 | int length = i::StrLength(future_keyword); |
| 96 | for (int j = 0; j < length; j++) { |
| 97 | matcher.AddChar(future_keyword[j]); |
| 98 | } |
| 99 | CHECK_EQ(i::Token::IDENTIFIER, matcher.token()); |
| 100 | } |
| 101 | |
| 102 | // Zero isn't ignored at first. |
| 103 | i::KeywordMatcher bad_start; |
| 104 | bad_start.AddChar(0); |
| 105 | CHECK_EQ(i::Token::IDENTIFIER, bad_start.token()); |
| 106 | bad_start.AddChar('i'); |
| 107 | bad_start.AddChar('f'); |
| 108 | CHECK_EQ(i::Token::IDENTIFIER, bad_start.token()); |
| 109 | |
| 110 | // Zero isn't ignored at end. |
| 111 | i::KeywordMatcher bad_end; |
| 112 | bad_end.AddChar('i'); |
| 113 | bad_end.AddChar('f'); |
| 114 | CHECK_EQ(i::Token::IF, bad_end.token()); |
| 115 | bad_end.AddChar(0); |
| 116 | CHECK_EQ(i::Token::IDENTIFIER, bad_end.token()); |
| 117 | |
| 118 | // Case isn't ignored. |
| 119 | i::KeywordMatcher bad_case; |
| 120 | bad_case.AddChar('i'); |
| 121 | bad_case.AddChar('F'); |
| 122 | CHECK_EQ(i::Token::IDENTIFIER, bad_case.token()); |
| 123 | |
| 124 | // If we mark it as failure, continuing won't help. |
| 125 | i::KeywordMatcher full_stop; |
| 126 | full_stop.AddChar('i'); |
| 127 | CHECK_EQ(i::Token::IDENTIFIER, full_stop.token()); |
| 128 | full_stop.Fail(); |
| 129 | CHECK_EQ(i::Token::IDENTIFIER, full_stop.token()); |
| 130 | full_stop.AddChar('f'); |
| 131 | CHECK_EQ(i::Token::IDENTIFIER, full_stop.token()); |
| 132 | } |
| 133 | |
Iain Merrick | 9ac36c9 | 2010-09-13 15:29:50 +0100 | [diff] [blame] | 134 | |
| 135 | TEST(ScanHTMLEndComments) { |
| 136 | // Regression test. See: |
| 137 | // http://code.google.com/p/chromium/issues/detail?id=53548 |
| 138 | // Tests that --> is correctly interpreted as comment-to-end-of-line if there |
| 139 | // is only whitespace before it on the line, even after a multiline-comment |
| 140 | // comment. This was not the case if it occurred before the first real token |
| 141 | // in the input. |
| 142 | const char* tests[] = { |
| 143 | // Before first real token. |
| 144 | "--> is eol-comment\nvar y = 37;\n", |
| 145 | "\n --> is eol-comment\nvar y = 37;\n", |
| 146 | "/* precomment */ --> is eol-comment\nvar y = 37;\n", |
| 147 | "\n/* precomment */ --> is eol-comment\nvar y = 37;\n", |
| 148 | // After first real token. |
| 149 | "var x = 42;\n--> is eol-comment\nvar y = 37;\n", |
| 150 | "var x = 42;\n/* precomment */ --> is eol-comment\nvar y = 37;\n", |
| 151 | NULL |
| 152 | }; |
| 153 | |
| 154 | // Parser/Scanner needs a stack limit. |
| 155 | int marker; |
| 156 | i::StackGuard::SetStackLimit( |
| 157 | reinterpret_cast<uintptr_t>(&marker) - 128 * 1024); |
| 158 | |
| 159 | for (int i = 0; tests[i]; i++) { |
| 160 | v8::ScriptData* data = |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 161 | v8::ScriptData::PreCompile(tests[i], i::StrLength(tests[i])); |
Iain Merrick | 9ac36c9 | 2010-09-13 15:29:50 +0100 | [diff] [blame] | 162 | CHECK(data != NULL && !data->HasError()); |
| 163 | delete data; |
| 164 | } |
| 165 | } |
| 166 | |
| 167 | |
| 168 | class ScriptResource : public v8::String::ExternalAsciiStringResource { |
| 169 | public: |
| 170 | ScriptResource(const char* data, size_t length) |
| 171 | : data_(data), length_(length) { } |
| 172 | |
| 173 | const char* data() const { return data_; } |
| 174 | size_t length() const { return length_; } |
| 175 | |
| 176 | private: |
| 177 | const char* data_; |
| 178 | size_t length_; |
| 179 | }; |
| 180 | |
| 181 | |
| 182 | TEST(Preparsing) { |
| 183 | v8::HandleScope handles; |
| 184 | v8::Persistent<v8::Context> context = v8::Context::New(); |
| 185 | v8::Context::Scope context_scope(context); |
| 186 | int marker; |
| 187 | i::StackGuard::SetStackLimit( |
| 188 | reinterpret_cast<uintptr_t>(&marker) - 128 * 1024); |
| 189 | |
| 190 | // Source containing functions that might be lazily compiled and all types |
| 191 | // of symbols (string, propertyName, regexp). |
| 192 | const char* source = |
| 193 | "var x = 42;" |
| 194 | "function foo(a) { return function nolazy(b) { return a + b; } }" |
| 195 | "function bar(a) { if (a) return function lazy(b) { return b; } }" |
| 196 | "var z = {'string': 'string literal', bareword: 'propertyName', " |
| 197 | " 42: 'number literal', for: 'keyword as propertyName', " |
| 198 | " f\\u006fr: 'keyword propertyname with escape'};" |
| 199 | "var v = /RegExp Literal/;" |
| 200 | "var w = /RegExp Literal\\u0020With Escape/gin;" |
| 201 | "var y = { get getter() { return 42; }, " |
| 202 | " set setter(v) { this.value = v; }};"; |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 203 | int source_length = i::StrLength(source); |
Iain Merrick | 9ac36c9 | 2010-09-13 15:29:50 +0100 | [diff] [blame] | 204 | const char* error_source = "var x = y z;"; |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 205 | int error_source_length = i::StrLength(error_source); |
Iain Merrick | 9ac36c9 | 2010-09-13 15:29:50 +0100 | [diff] [blame] | 206 | |
| 207 | v8::ScriptData* preparse = |
| 208 | v8::ScriptData::PreCompile(source, source_length); |
| 209 | CHECK(!preparse->HasError()); |
| 210 | bool lazy_flag = i::FLAG_lazy; |
| 211 | { |
| 212 | i::FLAG_lazy = true; |
| 213 | ScriptResource* resource = new ScriptResource(source, source_length); |
| 214 | v8::Local<v8::String> script_source = v8::String::NewExternal(resource); |
| 215 | v8::Script::Compile(script_source, NULL, preparse); |
| 216 | } |
| 217 | |
| 218 | { |
| 219 | i::FLAG_lazy = false; |
| 220 | |
| 221 | ScriptResource* resource = new ScriptResource(source, source_length); |
| 222 | v8::Local<v8::String> script_source = v8::String::NewExternal(resource); |
| 223 | v8::Script::New(script_source, NULL, preparse, v8::Local<v8::String>()); |
| 224 | } |
| 225 | delete preparse; |
| 226 | i::FLAG_lazy = lazy_flag; |
| 227 | |
| 228 | // Syntax error. |
| 229 | v8::ScriptData* error_preparse = |
| 230 | v8::ScriptData::PreCompile(error_source, error_source_length); |
| 231 | CHECK(error_preparse->HasError()); |
| 232 | i::ScriptDataImpl *pre_impl = |
| 233 | reinterpret_cast<i::ScriptDataImpl*>(error_preparse); |
| 234 | i::Scanner::Location error_location = |
| 235 | pre_impl->MessageLocation(); |
| 236 | // Error is at "z" in source, location 10..11. |
| 237 | CHECK_EQ(10, error_location.beg_pos); |
| 238 | CHECK_EQ(11, error_location.end_pos); |
| 239 | // Should not crash. |
| 240 | const char* message = pre_impl->BuildMessage(); |
| 241 | i::Vector<const char*> args = pre_impl->BuildArgs(); |
| 242 | CHECK_GT(strlen(message), 0); |
| 243 | } |
Teng-Hui Zhu | 3e5fa29 | 2010-11-09 16:16:48 -0800 | [diff] [blame^] | 244 | |
| 245 | |
| 246 | TEST(StandAlonePreParser) { |
| 247 | int marker; |
| 248 | i::StackGuard::SetStackLimit( |
| 249 | reinterpret_cast<uintptr_t>(&marker) - 128 * 1024); |
| 250 | |
| 251 | const char* programs[] = { |
| 252 | "{label: 42}", |
| 253 | "var x = 42;", |
| 254 | "function foo(x, y) { return x + y; }", |
| 255 | "native function foo(); return %ArgleBargle(glop);", |
| 256 | "var x = new new Function('this.x = 42');", |
| 257 | NULL |
| 258 | }; |
| 259 | |
| 260 | for (int i = 0; programs[i]; i++) { |
| 261 | const char* program = programs[i]; |
| 262 | unibrow::Utf8InputBuffer<256> stream(program, strlen(program)); |
| 263 | i::CompleteParserRecorder log; |
| 264 | i::Scanner scanner; |
| 265 | scanner.Initialize(i::Handle<i::String>::null(), &stream, i::JAVASCRIPT); |
| 266 | v8::preparser::PreParser<i::Scanner, i::CompleteParserRecorder> preparser; |
| 267 | bool result = preparser.PreParseProgram(&scanner, &log, true); |
| 268 | CHECK(result); |
| 269 | i::ScriptDataImpl data(log.ExtractData()); |
| 270 | CHECK(!data.has_error()); |
| 271 | } |
| 272 | } |