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| 1 #!/usr/bin/env python | |
| 2 | |
| 3 # Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | |
| 4 # for details. All rights reserved. Use of this source code is governed by a | |
| 5 # BSD-style license that can be found in the LICENSE file. | |
| 6 # | |
| 7 | |
| 8 """ | |
| 9 Frogpad is used to compile .dart files to javascript. | |
| 10 | |
| 11 This is accomplished by first creating an html file (usually called | |
| 12 <something>.frogpad.html) that can be used to execute the frog compiler in | |
| 13 a web browser (or DumpRenderTree). | |
| 14 | |
| 15 The generated frogpad.html contains: | |
| 16 | |
| 17 1. all the dart files that compose a dart program | |
| 18 2. all the dart files of dart:core and other standard dart libraries | |
| 19 3. frogpad.dart (compiled to javascript) | |
| 20 | |
| 21 The contents of each dart file is placed in a separate <script> tag. | |
| 22 | |
| 23 When the html page is loaded by a browser, the frog compiler is invoked | |
| 24 and the dart program is compiled to javascript. The generated javascript is | |
| 25 placed in a <pre> element with id "output". | |
| 26 | |
| 27 When the html page is passed to DumpRenderTree, the dumped output will | |
| 28 have the generated javascript. | |
| 29 """ | |
| 30 | |
| 31 import logging | |
| 32 import optparse | |
| 33 import os.path | |
| 34 import platform | |
| 35 import re | |
| 36 import subprocess | |
| 37 import sys | |
| 38 | |
| 39 | |
| 40 class FileNotFoundException(Exception): | |
| 41 def __init__(self, file_name): | |
| 42 self._name = file_name | |
| 43 | |
| 44 def __str__(self): | |
| 45 return self._name | |
| 46 | |
| 47 | |
| 48 class CommandFailedException(Exception): | |
| 49 def __init__(self, message): | |
| 50 self._message = message | |
| 51 | |
| 52 def GetMessage(self): | |
| 53 return self._message | |
| 54 | |
| 55 | |
| 56 # Template for the html page we're going to generate. | |
| 57 HTML = """<!DOCTYPE html> | |
| 58 <html> | |
| 59 <head> | |
| 60 <style type="text/css"> | |
| 61 textarea { | |
| 62 width: 100%; | |
| 63 height: 200px; | |
| 64 } | |
| 65 .label { | |
| 66 margin-top: 5px; | |
| 67 } | |
| 68 pre { | |
| 69 border: 2px solid black; | |
| 70 } | |
| 71 </style> | |
| 72 {{script_tags}} | |
| 73 <script type="text/javascript"> | |
| 74 if (window.layoutTestController) { | |
| 75 layoutTestController.dumpAsText(); | |
| 76 } | |
| 77 </script> | |
| 78 </head> | |
| 79 <body> | |
| 80 <h1>Frogpad</h1> | |
| 81 <div class="label">Input:</div> | |
| 82 <textarea id="input"></textarea> | |
| 83 <div class="label">Compiler Messages:</div> | |
| 84 <pre id="warnings"></pre> | |
| 85 <div class="label">Timing:</div> | |
| 86 <pre id="timing"></pre> | |
| 87 <div class="label">Output:</div> | |
| 88 <pre id="output"></pre> | |
| 89 <script type="text/javascript"> | |
| 90 {{FROGPAD_JS}} | |
| 91 </script> | |
| 92 </body> | |
| 93 </html> | |
| 94 """ | |
| 95 | |
| 96 # This finds everything after the word "Output:" in the html page. | |
| 97 # (Note, because the javascript we're fishing out spans multiple lines | |
| 98 # we need to use the DOTALL switch here.) | |
| 99 OUTPUT_JAVASCRIPT_REGEX = re.compile(".*\nOutput:\n(.*)\n#EOF", re.DOTALL) | |
| 100 | |
| 101 # If the frogpad.dart encounters a compilation error, the generated | |
| 102 # javascript will start with the word 'throw'. | |
| 103 COMPILATION_ERROR_REGEX = re.compile(".*frogpad compilation error.*", re.DOTALL) | |
| 104 | |
| 105 # We use "application/inert" here to make the browser ignore the | |
| 106 # these script tags. (frogpad.dart will fish out the contents as needed.) | |
| 107 # | |
| 108 SCRIPT_TAG = """<script type="application/inert" id="{{id}}"> | |
| 109 {{contents}} | |
| 110 </script> | |
| 111 """ | |
| 112 | |
| 113 # Regex that finds #import, #source and #native directives in .dart files. | |
| 114 # match.group(1) = "import", "source" or "native" | |
| 115 # match.group(2) = url of file being imported | |
| 116 DIRECTIVE_RE = re.compile(r"^#(import|source|native)\([\"']([^\"']*)[\"']") | |
| 117 | |
| 118 # id of script tag that holds name of the top dart file to be compiled, | |
| 119 # (This file name passed will be passed to the frog compiler by frogpad.dart.) | |
| 120 MAIN_ID = "main_id" | |
| 121 | |
| 122 # id of the script tag that holds the name of the frog directory | |
| 123 FROGDIR_ID = "frogdir_id" | |
| 124 | |
| 125 DART_LIBRARIES = { | |
| 126 "core": "lib/corelib.dart", | |
| 127 "coreimpl": "lib/corelib_impl.dart", | |
| 128 "dom": "../lib/dom/frog/dom_frog.dart", | |
| 129 "html": "../lib/html/frog/html_frog.dart", | |
| 130 "isolate": "../lib/isolate/isolate_frog.dart", | |
| 131 "json": "../lib/json/json_frog.dart" | |
| 132 } | |
| 133 | |
| 134 class Pad(object): | |
| 135 """ | |
| 136 Accumulates all source files that are needed to compile a dart program, | |
| 137 and places them in <script> tags on an html page. | |
| 138 """ | |
| 139 | |
| 140 def __init__(self, argv): | |
| 141 parser = optparse.OptionParser(usage= | |
| 142 "%prog [options] file_to_compile.dart" | |
| 143 ) | |
| 144 parser.add_option("-f", "--frogpad_js", | |
| 145 help="location of frogpad.js file") | |
| 146 parser.add_option("-o", "--out", | |
| 147 help="name of javascript output file") | |
| 148 parser.add_option("-v", "--verbose", action="store_true", | |
| 149 help="more verbose logging") | |
| 150 (options, args) = parser.parse_args(argv) | |
| 151 | |
| 152 log_level = logging.INFO | |
| 153 if options.verbose: | |
| 154 log_level = logging.DEBUG | |
| 155 logging.basicConfig(level=log_level) | |
| 156 | |
| 157 if len(args) < 2: | |
| 158 parser.print_help() | |
| 159 sys.exit(1) | |
| 160 | |
| 161 self.main_file = os.path.abspath(args[1]) | |
| 162 | |
| 163 # directory of this script | |
| 164 self.frogpad_dir = os.path.abspath(os.path.dirname(argv[0])) | |
| 165 | |
| 166 # root of dart source repo | |
| 167 self.dart_dir = os.path.dirname(os.path.dirname(os.path.dirname( | |
| 168 self.frogpad_dir))) | |
| 169 | |
| 170 # directory of frog compiler source code | |
| 171 self.frog_dir = os.path.join(self.dart_dir, "frog") | |
| 172 | |
| 173 logging.debug("dartdir_dir: '%s'" % self.dart_dir) | |
| 174 logging.debug("frog_dir: '%s'" % self.frog_dir) | |
| 175 logging.debug("frogpad_dir: '%s'" % self.frogpad_dir) | |
| 176 | |
| 177 # location of frogpad.js | |
| 178 # (frogpad.js is generated by running frogsh_bootstrap_wrapper.py) | |
| 179 if not options.frogpad_js: | |
| 180 raise Exception("--frogpad_js is required") | |
| 181 | |
| 182 if not os.path.exists(options.frogpad_js): | |
| 183 raise FileNotFoundException(options.frogpad_js) | |
| 184 | |
| 185 self.frogpad_js = options.frogpad_js | |
| 186 | |
| 187 if options.out: | |
| 188 # user has specified an output file name | |
| 189 self.js_file = os.path.abspath(options.out) | |
| 190 else: | |
| 191 # User didn't specify an output file, so use the input | |
| 192 # file name as the base of the output file name. | |
| 193 self.js_file = self.main_file + ".frogpad.js" | |
| 194 | |
| 195 logging.debug("js_file: '%s" % self.js_file) | |
| 196 | |
| 197 # this is the html file that we pass to DumpRenderTree | |
| 198 self.html_file = self.js_file + ".frogpad.html" | |
| 199 logging.debug("html_file: '%s'" % self.html_file) | |
| 200 | |
| 201 # map from file name to File object (contains entries for all corelib | |
| 202 # and all other dart files needed to compile main_file) | |
| 203 self.name_to_file = {} | |
| 204 | |
| 205 # map from script tag id to File object | |
| 206 self.id_to_file = {} | |
| 207 | |
| 208 self.load_libraries() | |
| 209 self.load_file(self.main_file) | |
| 210 | |
| 211 html = self.generate_html() | |
| 212 write_file(self.html_file, html) | |
| 213 | |
| 214 js = self.generate_js() | |
| 215 write_file(self.js_file, js) | |
| 216 | |
| 217 line_count = len(js.splitlines()) | |
| 218 logging.debug("generated '%s' (%d lines)", self.js_file, line_count) | |
| 219 | |
| 220 match = COMPILATION_ERROR_REGEX.match(js) | |
| 221 if match: | |
| 222 sys.exit(1) | |
| 223 | |
| 224 def generate_html(self): | |
| 225 tags = [] | |
| 226 for f in self.id_to_file.values(): | |
| 227 tags.append(self._create_tag(f.id, f.contents)) | |
| 228 tags.append(self._create_tag(MAIN_ID, self.main_file)) | |
| 229 tags.append(self._create_tag(FROGDIR_ID, self.frog_dir)) | |
| 230 html = HTML.replace("{{script_tags}}", "".join(tags)) | |
| 231 html = html.replace("{{FROGPAD_JS}}", read_file(self.frogpad_js)) | |
| 232 return html | |
| 233 | |
| 234 def generate_js(self): | |
| 235 drt = os.path.join(self.dart_dir, "client/tests/drt/DumpRenderTree") | |
| 236 if platform.system() == 'Darwin': | |
| 237 drt += ".app" | |
| 238 elif platform.system() == 'Windows': | |
| 239 raise Exception("frogpad does not run on Windows") | |
| 240 | |
| 241 check_exists(drt) | |
| 242 args = [] | |
| 243 args.append(drt) | |
| 244 args.append(self.html_file) | |
| 245 | |
| 246 stdout = run_command(args) | |
| 247 match = OUTPUT_JAVASCRIPT_REGEX.match(stdout) | |
| 248 if not match: | |
| 249 raise Exception("can't find regex in DumpRenderTree output") | |
| 250 return match.group(1) | |
| 251 | |
| 252 @staticmethod | |
| 253 def _create_tag(id, contents): | |
| 254 s = SCRIPT_TAG | |
| 255 s = s.replace("{{id}}", id) | |
| 256 # TODO(mattsh) - need to html escape here | |
| 257 s = s.replace("{{contents}}", contents) | |
| 258 return s | |
| 259 | |
| 260 def dart_library(self, name): | |
| 261 path = DART_LIBRARIES[name] | |
| 262 if not path: | |
| 263 raise Exception("unrecognized 'dart:%s'", name) | |
| 264 return os.path.join(self.frog_dir, path) | |
| 265 | |
| 266 def load_libraries(self): | |
| 267 for name in DART_LIBRARIES: | |
| 268 self.load_file(self.dart_library(name)) | |
| 269 | |
| 270 def load_file(self, name): | |
| 271 name = os.path.abspath(name) | |
| 272 if name in self.name_to_file: | |
| 273 return | |
| 274 f = File(self, name) | |
| 275 self.name_to_file[f.name] = f | |
| 276 if f.id in self.id_to_file: | |
| 277 raise Exception("ambiguous id '%s'" % f.id) | |
| 278 self.id_to_file[f.id] = f | |
| 279 f.directives() | |
| 280 | |
| 281 class File(object): | |
| 282 def __init__(self, pad, name): | |
| 283 self.pad = pad | |
| 284 self.name = name | |
| 285 self.id = self._make_id() | |
| 286 check_exists(name) | |
| 287 with open(self.name, "r") as f: | |
| 288 self.contents = f.read() | |
| 289 | |
| 290 def _make_id(self): | |
| 291 """ | |
| 292 Generates an id (based on the file name) for the <script> tag that will | |
| 293 hold the contents of this file. | |
| 294 """ | |
| 295 return self.name.replace("/", "_").replace(".", "_") | |
| 296 | |
| 297 def directives(self): | |
| 298 """Load files referenced by #source, #import and #native directives.""" | |
| 299 lines = self.contents.split("\n") | |
| 300 self.line_number = 0 | |
| 301 for line in lines: | |
| 302 self.line_number += 1 | |
| 303 self._directive(line) | |
| 304 | |
| 305 def _directive(self, line): | |
| 306 match = DIRECTIVE_RE.match(line) | |
| 307 if not match: | |
| 308 return | |
| 309 url = match.group(2) | |
| 310 if url.startswith("dart:"): | |
| 311 path = self.pad.dart_library(url[len("dart:"):]) | |
| 312 else: | |
| 313 path = os.path.join(os.path.dirname(self.name), url) | |
| 314 self.pad.load_file(path) | |
| 315 | |
| 316 def read_file(file_name): | |
| 317 check_exists(file_name) | |
| 318 with open(file_name, "r") as input: | |
| 319 contents = input.read() | |
| 320 logging.debug("read_file '%s' (%d bytes)" % (file_name, len(contents))) | |
| 321 return contents | |
| 322 | |
| 323 def write_file(file_name, contents): | |
| 324 with open(file_name, "w") as output: | |
| 325 output.write(contents) | |
| 326 | |
| 327 check_exists(file_name) | |
| 328 logging.debug("write_file '%s' (%d bytes)" % (file_name, len(contents))) | |
| 329 | |
| 330 | |
| 331 def check_exists(file_name): | |
| 332 if not os.path.exists(file_name): | |
| 333 raise FileNotFoundException(file_name) | |
| 334 | |
| 335 | |
| 336 def format_command(args): | |
| 337 return ' '.join(args) | |
| 338 | |
| 339 | |
| 340 def run_command(args): | |
| 341 """ | |
| 342 Args: | |
| 343 command: comamnd with arguments to exec | |
| 344 Returns: | |
| 345 all output that this command sent to stdout | |
| 346 """ | |
| 347 | |
| 348 command = format_command(args) | |
| 349 logging.info("RUNNING: '%s'" % command) | |
| 350 child = subprocess.Popen(args, | |
| 351 stdout=subprocess.PIPE, | |
| 352 stderr=subprocess.PIPE, | |
| 353 close_fds=True) | |
| 354 (stdout, stderr) = child.communicate() | |
| 355 exit_code = child.wait() | |
| 356 if exit_code: | |
| 357 for line in stderr.splitlines(): | |
| 358 logging.info(line) | |
| 359 msg = "FAILURE (exit_code=%d): '%s'" % (exit_code, command) | |
| 360 logging.error(msg) | |
| 361 raise CommandFailedException(msg) | |
| 362 logging.debug("SUCCEEDED (%d bytes)" % len(stdout)) | |
| 363 return stdout | |
| 364 | |
| 365 | |
| 366 def main(argv): | |
| 367 Pad(argv) | |
| 368 | |
| 369 if __name__ == "__main__": | |
| 370 sys.exit(main(sys.argv)) | |
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Chromium Code Reviews
Issue 10919138:
Remove frogpad, as it's unused. (Closed)
Base URL: http://dart.googlecode.com/svn/branches/bleeding_edge/dart/