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| 1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file | |
| 2 // for details. All rights reserved. Use of this source code is governed by a | |
| 3 // BSD-style license that can be found in the LICENSE file. | |
| 4 | |
| 5 part of js_ast; | |
| 6 | |
| 7 class TemplateManager { | |
| 8 Map<String, Template> expressionTemplates = new Map<String, Template>(); | |
| 9 Map<String, Template> statementTemplates = new Map<String, Template>(); | |
| 10 | |
| 11 TemplateManager(); | |
| 12 | |
| 13 Template lookupExpressionTemplate(String source) { | |
| 14 return expressionTemplates[source]; | |
| 15 } | |
| 16 | |
| 17 Template defineExpressionTemplate(String source, Node ast) { | |
| 18 Template template = | |
| 19 new Template(source, ast, isExpression: true, forceCopy: false); | |
| 20 expressionTemplates[source] = template; | |
| 21 return template; | |
| 22 } | |
| 23 | |
| 24 Template lookupStatementTemplate(String source) { | |
| 25 return statementTemplates[source]; | |
| 26 } | |
| 27 | |
| 28 Template defineStatementTemplate(String source, Node ast) { | |
| 29 Template template = | |
| 30 new Template(source, ast, isExpression: false, forceCopy: false); | |
| 31 statementTemplates[source] = template; | |
| 32 return template; | |
| 33 } | |
| 34 } | |
| 35 | |
| 36 /** | |
| 37 * A Template is created with JavaScript AST containing placeholders (interface | |
| 38 * InterpolatedNode). The [instantiate] method creates an AST that looks like | |
| 39 * the original with the placeholders replaced by the arguments to | |
| 40 * [instantiate]. | |
| 41 */ | |
| 42 class Template { | |
| 43 final String source; | |
| 44 final bool isExpression; | |
| 45 final bool forceCopy; | |
| 46 final Node ast; | |
| 47 | |
| 48 Instantiator instantiator; | |
| 49 | |
| 50 int positionalArgumentCount = -1; | |
| 51 | |
| 52 // Null, unless there are named holes. | |
| 53 List<String> holeNames; | |
| 54 bool get isPositional => holeNames == null; | |
| 55 | |
| 56 Template(this.source, this.ast, | |
| 57 {this.isExpression: true, this.forceCopy: false}) { | |
| 58 _compile(); | |
| 59 } | |
| 60 | |
| 61 Template.withExpressionResult(this.ast) | |
| 62 : source = null, | |
| 63 isExpression = true, | |
| 64 forceCopy = false { | |
| 65 assert(ast is Expression); | |
| 66 assert(_checkNoPlaceholders()); | |
| 67 positionalArgumentCount = 0; | |
| 68 instantiator = (arguments) => ast; | |
| 69 } | |
| 70 | |
| 71 Template.withStatementResult(this.ast) | |
| 72 : source = null, | |
| 73 isExpression = false, | |
| 74 forceCopy = false { | |
| 75 assert(ast is Statement); | |
| 76 assert(_checkNoPlaceholders()); | |
| 77 positionalArgumentCount = 0; | |
| 78 instantiator = (arguments) => ast; | |
| 79 } | |
| 80 | |
| 81 bool _checkNoPlaceholders() { | |
| 82 InstantiatorGeneratorVisitor generator = | |
| 83 new InstantiatorGeneratorVisitor(false); | |
| 84 generator.compile(ast); | |
| 85 return generator.analysis.count == 0; | |
| 86 } | |
| 87 | |
| 88 void _compile() { | |
| 89 InstantiatorGeneratorVisitor generator = | |
| 90 new InstantiatorGeneratorVisitor(forceCopy); | |
| 91 instantiator = generator.compile(ast); | |
| 92 positionalArgumentCount = generator.analysis.count; | |
| 93 Set<String> names = generator.analysis.holeNames; | |
| 94 holeNames = names.toList(growable: false); | |
| 95 } | |
| 96 | |
| 97 /// Instantiates the template with the given [arguments]. | |
| 98 /// | |
| 99 /// This method fills in the holes with the given arguments. The [arguments] | |
| 100 /// must be either a [List] or a [Map]. | |
| 101 Node instantiate(var arguments) { | |
| 102 if (arguments is List) { | |
| 103 if (arguments.length != positionalArgumentCount) { | |
| 104 throw 'Wrong number of template arguments, given ${arguments.length}, ' | |
| 105 'expected $positionalArgumentCount:\n$source'; | |
| 106 } | |
| 107 return instantiator(arguments); | |
| 108 } | |
| 109 assert(arguments is Map); | |
| 110 if (holeNames.length < arguments.length) { | |
| 111 // This search is in O(n), but we only do it in case of an error, and the | |
| 112 // number of holes should be quite limited. | |
| 113 String unusedNames = | |
| 114 arguments.keys.where((name) => !holeNames.contains(name)).join(", "); | |
| 115 throw "Template arguments has unused mappings: $unusedNames"; | |
| 116 } | |
| 117 if (!holeNames.every((String name) => arguments.containsKey(name))) { | |
| 118 String notFound = | |
| 119 holeNames.where((name) => !arguments.containsKey(name)).join(", "); | |
| 120 throw "Template arguments is missing mappings for: $notFound"; | |
| 121 } | |
| 122 return instantiator(arguments); | |
| 123 } | |
| 124 | |
| 125 /// Like [instantiate] but works with free variables. | |
| 126 Node safeCreate(Map arguments) { | |
| 127 if (holeNames.isEmpty) return ast; | |
| 128 return instantiator(new Map.fromIterable(holeNames, value: (name) { | |
| 129 var a = arguments[name]; | |
| 130 return a != null ? a : new InterpolatedExpression(name); | |
| 131 })); | |
| 132 } | |
| 133 } | |
| 134 | |
| 135 /** | |
| 136 * An Instantiator is a Function that generates a JS AST tree or List of | |
| 137 * trees. [arguments] is a List for positional templates, or Map for | |
| 138 * named templates. | |
| 139 */ | |
| 140 typedef Instantiator(var arguments); | |
| 141 | |
| 142 /** | |
| 143 * InstantiatorGeneratorVisitor compiles a template. This class compiles a tree | |
| 144 * containing [InterpolatedNode]s into a function that will create a copy of the | |
| 145 * tree with the interpolated nodes substituted with provided values. | |
| 146 */ | |
| 147 class InstantiatorGeneratorVisitor implements NodeVisitor<Instantiator> { | |
| 148 final bool forceCopy; | |
| 149 | |
| 150 InterpolatedNodeAnalysis analysis = new InterpolatedNodeAnalysis(); | |
| 151 | |
| 152 /** | |
| 153 * The entire tree is cloned if [forceCopy] is true. | |
| 154 */ | |
| 155 InstantiatorGeneratorVisitor(this.forceCopy); | |
| 156 | |
| 157 Instantiator compile(Node node) { | |
| 158 analysis.visit(node); | |
| 159 Instantiator result = visit(node); | |
| 160 return result; | |
| 161 } | |
| 162 | |
| 163 static error(String message) { | |
| 164 throw message; | |
| 165 } | |
| 166 | |
| 167 static Instantiator same(Node node) => (arguments) => node; | |
| 168 static Node makeNull(arguments) => null; | |
| 169 | |
| 170 Instantiator visit(Node node) { | |
| 171 if (forceCopy || analysis.containsInterpolatedNodes(node)) { | |
| 172 return node.accept(this); | |
| 173 } | |
| 174 return same(node); | |
| 175 } | |
| 176 | |
| 177 Instantiator visitNullable(Node node) { | |
| 178 if (node == null) return makeNull; | |
| 179 return visit(node); | |
| 180 } | |
| 181 | |
| 182 Instantiator visitSplayable(Node node) { | |
| 183 // TODO(sra): Process immediate [InterpolatedNode]s, permitting splaying. | |
| 184 return visit(node); | |
| 185 } | |
| 186 | |
| 187 Instantiator visitNode(Node node) { | |
| 188 throw 'Unimplemented InstantiatorGeneratorVisitor for $node'; | |
| 189 } | |
| 190 | |
| 191 Instantiator visitInterpolatedExpression(InterpolatedExpression node) { | |
| 192 var nameOrPosition = node.nameOrPosition; | |
| 193 return (arguments) { | |
| 194 var value = arguments[nameOrPosition]; | |
| 195 if (value is Expression) return value; | |
| 196 if (value is String) return new Identifier(value); | |
| 197 error('Interpolated value #$nameOrPosition is not an Expression: $value'); | |
| 198 }; | |
| 199 } | |
| 200 | |
| 201 Instantiator visitSplayableExpression(Node node) { | |
| 202 if (node is InterpolatedExpression) { | |
| 203 var nameOrPosition = node.nameOrPosition; | |
| 204 return (arguments) { | |
| 205 var value = arguments[nameOrPosition]; | |
| 206 Expression toExpression(item) { | |
| 207 if (item is Expression) return item; | |
| 208 if (item is String) return new Identifier(item); | |
| 209 return error('Interpolated value #$nameOrPosition is not ' | |
| 210 'an Expression or List of Expressions: $value'); | |
| 211 } | |
| 212 if (value is Iterable) return value.map(toExpression); | |
| 213 return toExpression(value); | |
| 214 }; | |
| 215 } | |
| 216 return visit(node); | |
| 217 } | |
| 218 | |
| 219 Instantiator visitInterpolatedLiteral(InterpolatedLiteral node) { | |
| 220 var nameOrPosition = node.nameOrPosition; | |
| 221 return (arguments) { | |
| 222 var value = arguments[nameOrPosition]; | |
| 223 if (value is Literal) return value; | |
| 224 error('Interpolated value #$nameOrPosition is not a Literal: $value'); | |
| 225 }; | |
| 226 } | |
| 227 | |
| 228 Instantiator visitInterpolatedParameter(InterpolatedParameter node) { | |
| 229 var nameOrPosition = node.nameOrPosition; | |
| 230 return (arguments) { | |
| 231 var value = arguments[nameOrPosition]; | |
| 232 | |
| 233 Parameter toIdentifier(item) { | |
| 234 if (item is Parameter) return item; | |
| 235 if (item is String) return new Identifier(item); | |
| 236 return error('Interpolated value #$nameOrPosition is not an Identifier' | |
| 237 ' or List of Identifiers: $value'); | |
| 238 } | |
| 239 if (value is Iterable) return value.map(toIdentifier); | |
| 240 return toIdentifier(value); | |
| 241 }; | |
| 242 } | |
| 243 | |
| 244 Instantiator visitInterpolatedSelector(InterpolatedSelector node) { | |
| 245 // A selector is an expression, as in `a[selector]`. | |
| 246 // A String argument converted into a LiteralString, so `a.#` with argument | |
| 247 // 'foo' generates `a["foo"]` which prints as `a.foo`. | |
| 248 var nameOrPosition = node.nameOrPosition; | |
| 249 return (arguments) { | |
| 250 var value = arguments[nameOrPosition]; | |
| 251 if (value is Expression) return value; | |
| 252 if (value is String) return new LiteralString('"$value"'); | |
| 253 error('Interpolated value #$nameOrPosition is not a selector: $value'); | |
| 254 }; | |
| 255 } | |
| 256 | |
| 257 Instantiator visitInterpolatedStatement(InterpolatedStatement node) { | |
| 258 var nameOrPosition = node.nameOrPosition; | |
| 259 return (arguments) { | |
| 260 var value = arguments[nameOrPosition]; | |
| 261 if (value is Node) return value.toStatement(); | |
| 262 error('Interpolated value #$nameOrPosition is not a Statement: $value'); | |
| 263 }; | |
| 264 } | |
| 265 | |
| 266 Instantiator visitInterpolatedMethod(InterpolatedMethod node) { | |
| 267 var nameOrPosition = node.nameOrPosition; | |
| 268 return (arguments) { | |
| 269 var value = arguments[nameOrPosition]; | |
| 270 Method toMethod(item) { | |
| 271 if (item is Method) return item; | |
| 272 return error('Interpolated value #$nameOrPosition is not a Method ' | |
| 273 'or List of Methods: $value'); | |
| 274 } | |
| 275 if (value is Iterable) return value.map(toMethod); | |
| 276 return toMethod(value); | |
| 277 }; | |
| 278 } | |
| 279 | |
| 280 Instantiator visitInterpolatedIdentifier(InterpolatedIdentifier node) { | |
| 281 var nameOrPosition = node.nameOrPosition; | |
| 282 return (arguments) { | |
| 283 var item = arguments[nameOrPosition]; | |
| 284 if (item is Identifier) return item; | |
| 285 if (item is String) return new Identifier(item); | |
| 286 return error('Interpolated value #$nameOrPosition is not a ' | |
| 287 'Identifier or String: $item'); | |
| 288 }; | |
| 289 } | |
| 290 | |
| 291 Instantiator visitSplayableStatement(Node node) { | |
| 292 if (node is InterpolatedStatement) { | |
| 293 var nameOrPosition = node.nameOrPosition; | |
| 294 return (arguments) { | |
| 295 var value = arguments[nameOrPosition]; | |
| 296 Statement toStatement(item) { | |
| 297 if (item is Statement) return item; | |
| 298 if (item is Expression) return item.toStatement(); | |
| 299 ; | |
| 300 return error('Interpolated value #$nameOrPosition is not ' | |
| 301 'a Statement or List of Statements: $value'); | |
| 302 } | |
| 303 if (value is Iterable) return value.map(toStatement); | |
| 304 return toStatement(value); | |
| 305 }; | |
| 306 } | |
| 307 return visit(node); | |
| 308 } | |
| 309 | |
| 310 Instantiator visitProgram(Program node) { | |
| 311 List instantiators = node.body.map(visitSplayableStatement).toList(); | |
| 312 return (arguments) { | |
| 313 List<Statement> statements = <Statement>[]; | |
| 314 void add(node) { | |
| 315 if (node is EmptyStatement) return; | |
| 316 if (node is Iterable) { | |
| 317 statements.addAll(node); | |
| 318 } else { | |
| 319 statements.add(node.toStatement()); | |
| 320 } | |
| 321 } | |
| 322 for (Instantiator instantiator in instantiators) { | |
| 323 add(instantiator(arguments)); | |
| 324 } | |
| 325 return new Program(statements); | |
| 326 }; | |
| 327 } | |
| 328 | |
| 329 Instantiator visitBlock(Block node) { | |
| 330 List instantiators = node.statements.map(visitSplayableStatement).toList(); | |
| 331 return (arguments) { | |
| 332 List<Statement> statements = <Statement>[]; | |
| 333 void add(node) { | |
| 334 if (node is EmptyStatement) return; | |
| 335 if (node is Iterable) { | |
| 336 statements.addAll(node); | |
| 337 } else if (node is Block) { | |
| 338 statements.addAll(node.statements); | |
| 339 } else { | |
| 340 statements.add(node.toStatement()); | |
| 341 } | |
| 342 } | |
| 343 for (Instantiator instantiator in instantiators) { | |
| 344 add(instantiator(arguments)); | |
| 345 } | |
| 346 return new Block(statements); | |
| 347 }; | |
| 348 } | |
| 349 | |
| 350 Instantiator visitExpressionStatement(ExpressionStatement node) { | |
| 351 Instantiator buildExpression = visit(node.expression); | |
| 352 return (arguments) { | |
| 353 return buildExpression(arguments).toStatement(); | |
| 354 }; | |
| 355 } | |
| 356 | |
| 357 Instantiator visitEmptyStatement(EmptyStatement node) => | |
| 358 (arguments) => new EmptyStatement(); | |
| 359 | |
| 360 Instantiator visitIf(If node) { | |
| 361 if (node.condition is InterpolatedExpression) { | |
| 362 return visitIfConditionalCompilation(node); | |
| 363 } else { | |
| 364 return visitIfNormal(node); | |
| 365 } | |
| 366 } | |
| 367 | |
| 368 Instantiator visitIfConditionalCompilation(If node) { | |
| 369 // Special version of visitInterpolatedExpression that permits bools. | |
| 370 compileCondition(InterpolatedExpression node) { | |
| 371 var nameOrPosition = node.nameOrPosition; | |
| 372 return (arguments) { | |
| 373 var value = arguments[nameOrPosition]; | |
| 374 if (value is bool) return value; | |
| 375 if (value is Expression) return value; | |
| 376 if (value is String) return new Identifier(value); | |
| 377 error('Interpolated value #$nameOrPosition ' | |
| 378 'is not an Expression: $value'); | |
| 379 }; | |
| 380 } | |
| 381 var makeCondition = compileCondition(node.condition); | |
| 382 Instantiator makeThen = visit(node.then); | |
| 383 Instantiator makeOtherwise = visit(node.otherwise); | |
| 384 return (arguments) { | |
| 385 var condition = makeCondition(arguments); | |
| 386 if (condition is bool) { | |
| 387 if (condition == true) { | |
| 388 return makeThen(arguments); | |
| 389 } else { | |
| 390 return makeOtherwise(arguments); | |
| 391 } | |
| 392 } | |
| 393 return new If(condition, makeThen(arguments), makeOtherwise(arguments)); | |
| 394 }; | |
| 395 } | |
| 396 | |
| 397 Instantiator visitIfNormal(If node) { | |
| 398 Instantiator makeCondition = visit(node.condition); | |
| 399 Instantiator makeThen = visit(node.then); | |
| 400 Instantiator makeOtherwise = visit(node.otherwise); | |
| 401 return (arguments) { | |
| 402 return new If(makeCondition(arguments), makeThen(arguments), | |
| 403 makeOtherwise(arguments)); | |
| 404 }; | |
| 405 } | |
| 406 | |
| 407 Instantiator visitFor(For node) { | |
| 408 Instantiator makeInit = visitNullable(node.init); | |
| 409 Instantiator makeCondition = visitNullable(node.condition); | |
| 410 Instantiator makeUpdate = visitNullable(node.update); | |
| 411 Instantiator makeBody = visit(node.body); | |
| 412 return (arguments) { | |
| 413 return new For(makeInit(arguments), makeCondition(arguments), | |
| 414 makeUpdate(arguments), makeBody(arguments)); | |
| 415 }; | |
| 416 } | |
| 417 | |
| 418 Instantiator visitForIn(ForIn node) { | |
| 419 Instantiator makeLeftHandSide = visit(node.leftHandSide); | |
| 420 Instantiator makeObject = visit(node.object); | |
| 421 Instantiator makeBody = visit(node.body); | |
| 422 return (arguments) { | |
| 423 return new ForIn(makeLeftHandSide(arguments), makeObject(arguments), | |
| 424 makeBody(arguments)); | |
| 425 }; | |
| 426 } | |
| 427 | |
| 428 Instantiator visitForOf(ForOf node) { | |
| 429 Instantiator makeLeftHandSide = visit(node.leftHandSide); | |
| 430 Instantiator makeObject = visit(node.iterable); | |
| 431 Instantiator makeBody = visit(node.body); | |
| 432 return (arguments) { | |
| 433 return new ForOf(makeLeftHandSide(arguments), makeObject(arguments), | |
| 434 makeBody(arguments)); | |
| 435 }; | |
| 436 } | |
| 437 | |
| 438 TODO(String name) { | |
| 439 throw new UnimplementedError('$this.$name'); | |
| 440 } | |
| 441 | |
| 442 Instantiator visitWhile(While node) { | |
| 443 Instantiator makeCondition = visit(node.condition); | |
| 444 Instantiator makeBody = visit(node.body); | |
| 445 return (arguments) { | |
| 446 return new While(makeCondition(arguments), makeBody(arguments)); | |
| 447 }; | |
| 448 } | |
| 449 | |
| 450 Instantiator visitDo(Do node) { | |
| 451 Instantiator makeBody = visit(node.body); | |
| 452 Instantiator makeCondition = visit(node.condition); | |
| 453 return (arguments) { | |
| 454 return new Do(makeBody(arguments), makeCondition(arguments)); | |
| 455 }; | |
| 456 } | |
| 457 | |
| 458 Instantiator visitContinue(Continue node) => | |
| 459 (arguments) => new Continue(node.targetLabel); | |
| 460 | |
| 461 Instantiator visitBreak(Break node) => | |
| 462 (arguments) => new Break(node.targetLabel); | |
| 463 | |
| 464 Instantiator visitReturn(Return node) { | |
| 465 Instantiator makeExpression = visitNullable(node.value); | |
| 466 return (arguments) => new Return(makeExpression(arguments)); | |
| 467 } | |
| 468 | |
| 469 Instantiator visitDartYield(DartYield node) { | |
| 470 Instantiator makeExpression = visit(node.expression); | |
| 471 return (arguments) => | |
| 472 new DartYield(makeExpression(arguments), node.hasStar); | |
| 473 } | |
| 474 | |
| 475 Instantiator visitThrow(Throw node) { | |
| 476 Instantiator makeExpression = visit(node.expression); | |
| 477 return (arguments) => new Throw(makeExpression(arguments)); | |
| 478 } | |
| 479 | |
| 480 Instantiator visitTry(Try node) { | |
| 481 Instantiator makeBody = visit(node.body); | |
| 482 Instantiator makeCatch = visitNullable(node.catchPart); | |
| 483 Instantiator makeFinally = visitNullable(node.finallyPart); | |
| 484 return (arguments) => new Try( | |
| 485 makeBody(arguments), makeCatch(arguments), makeFinally(arguments)); | |
| 486 } | |
| 487 | |
| 488 Instantiator visitCatch(Catch node) { | |
| 489 Instantiator makeDeclaration = visit(node.declaration); | |
| 490 Instantiator makeBody = visit(node.body); | |
| 491 return (arguments) => | |
| 492 new Catch(makeDeclaration(arguments), makeBody(arguments)); | |
| 493 } | |
| 494 | |
| 495 Instantiator visitSwitch(Switch node) { | |
| 496 Instantiator makeKey = visit(node.key); | |
| 497 Iterable<Instantiator> makeCases = node.cases.map(visit); | |
| 498 return (arguments) { | |
| 499 return new Switch( | |
| 500 makeKey(arguments), | |
| 501 makeCases | |
| 502 .map((Instantiator makeCase) => makeCase(arguments)) | |
| 503 .toList()); | |
| 504 }; | |
| 505 } | |
| 506 | |
| 507 Instantiator visitCase(Case node) { | |
| 508 Instantiator makeExpression = visit(node.expression); | |
| 509 Instantiator makeBody = visit(node.body); | |
| 510 return (arguments) { | |
| 511 return new Case(makeExpression(arguments), makeBody(arguments)); | |
| 512 }; | |
| 513 } | |
| 514 | |
| 515 Instantiator visitDefault(Default node) { | |
| 516 Instantiator makeBody = visit(node.body); | |
| 517 return (arguments) { | |
| 518 return new Default(makeBody(arguments)); | |
| 519 }; | |
| 520 } | |
| 521 | |
| 522 Instantiator visitFunctionDeclaration(FunctionDeclaration node) { | |
| 523 Instantiator makeName = visit(node.name); | |
| 524 Instantiator makeFunction = visit(node.function); | |
| 525 return (arguments) => | |
| 526 new FunctionDeclaration(makeName(arguments), makeFunction(arguments)); | |
| 527 } | |
| 528 | |
| 529 Instantiator visitLabeledStatement(LabeledStatement node) { | |
| 530 Instantiator makeBody = visit(node.body); | |
| 531 return (arguments) => new LabeledStatement(node.label, makeBody(arguments)); | |
| 532 } | |
| 533 | |
| 534 Instantiator visitLiteralStatement(LiteralStatement node) => | |
| 535 TODO('visitLiteralStatement'); | |
| 536 Instantiator visitLiteralExpression(LiteralExpression node) => | |
| 537 TODO('visitLiteralExpression'); | |
| 538 | |
| 539 Instantiator visitVariableDeclarationList(VariableDeclarationList node) { | |
| 540 List<Instantiator> declarationMakers = | |
| 541 node.declarations.map(visit).toList(); | |
| 542 return (arguments) { | |
| 543 List<VariableInitialization> declarations = <VariableInitialization>[]; | |
| 544 for (Instantiator instantiator in declarationMakers) { | |
| 545 var result = instantiator(arguments); | |
| 546 declarations.add(result); | |
| 547 } | |
| 548 return new VariableDeclarationList(node.keyword, declarations); | |
| 549 }; | |
| 550 } | |
| 551 | |
| 552 Instantiator visitAssignment(Assignment node) { | |
| 553 Instantiator makeLeftHandSide = visit(node.leftHandSide); | |
| 554 String op = node.op; | |
| 555 Instantiator makeValue = visitNullable(node.value); | |
| 556 return (arguments) { | |
| 557 return new Assignment.compound( | |
| 558 makeLeftHandSide(arguments), op, makeValue(arguments)); | |
| 559 }; | |
| 560 } | |
| 561 | |
| 562 Instantiator visitVariableInitialization(VariableInitialization node) { | |
| 563 Instantiator makeDeclaration = visit(node.declaration); | |
| 564 Instantiator makeValue = visitNullable(node.value); | |
| 565 return (arguments) { | |
| 566 return new VariableInitialization( | |
| 567 makeDeclaration(arguments), makeValue(arguments)); | |
| 568 }; | |
| 569 } | |
| 570 | |
| 571 Instantiator visitConditional(Conditional cond) { | |
| 572 Instantiator makeCondition = visit(cond.condition); | |
| 573 Instantiator makeThen = visit(cond.then); | |
| 574 Instantiator makeOtherwise = visit(cond.otherwise); | |
| 575 return (arguments) => new Conditional(makeCondition(arguments), | |
| 576 makeThen(arguments), makeOtherwise(arguments)); | |
| 577 } | |
| 578 | |
| 579 Instantiator visitNew(New node) => | |
| 580 handleCallOrNew(node, (target, arguments) => new New(target, arguments)); | |
| 581 | |
| 582 Instantiator visitCall(Call node) => | |
| 583 handleCallOrNew(node, (target, arguments) => new Call(target, arguments)); | |
| 584 | |
| 585 Instantiator handleCallOrNew(Call node, finish(target, arguments)) { | |
| 586 Instantiator makeTarget = visit(node.target); | |
| 587 Iterable<Instantiator> argumentMakers = | |
| 588 node.arguments.map(visitSplayableExpression).toList(); | |
| 589 | |
| 590 // TODO(sra): Avoid copying call arguments if no interpolation or forced | |
| 591 // copying. | |
| 592 return (arguments) { | |
| 593 Node target = makeTarget(arguments); | |
| 594 List<Expression> callArguments = <Expression>[]; | |
| 595 for (Instantiator instantiator in argumentMakers) { | |
| 596 var result = instantiator(arguments); | |
| 597 if (result is Iterable) { | |
| 598 callArguments.addAll(result); | |
| 599 } else { | |
| 600 callArguments.add(result); | |
| 601 } | |
| 602 } | |
| 603 return finish(target, callArguments.toList(growable: false)); | |
| 604 }; | |
| 605 } | |
| 606 | |
| 607 Instantiator visitBinary(Binary node) { | |
| 608 Instantiator makeLeft = visit(node.left); | |
| 609 Instantiator makeRight = visit(node.right); | |
| 610 String op = node.op; | |
| 611 return (arguments) => | |
| 612 new Binary(op, makeLeft(arguments), makeRight(arguments)); | |
| 613 } | |
| 614 | |
| 615 Instantiator visitPrefix(Prefix node) { | |
| 616 Instantiator makeOperand = visit(node.argument); | |
| 617 String op = node.op; | |
| 618 return (arguments) => new Prefix(op, makeOperand(arguments)); | |
| 619 } | |
| 620 | |
| 621 Instantiator visitPostfix(Postfix node) { | |
| 622 Instantiator makeOperand = visit(node.argument); | |
| 623 String op = node.op; | |
| 624 return (arguments) => new Postfix(op, makeOperand(arguments)); | |
| 625 } | |
| 626 | |
| 627 Instantiator visitThis(This node) => (arguments) => new This(); | |
| 628 Instantiator visitSuper(Super node) => (arguments) => new Super(); | |
| 629 | |
| 630 Instantiator visitIdentifier(Identifier node) => | |
| 631 (arguments) => new Identifier(node.name); | |
| 632 | |
| 633 Instantiator visitSpread(Spread node) => | |
| 634 (args) => new Spread(visit(node.argument)(args)); | |
| 635 | |
| 636 Instantiator visitYield(Yield node) => | |
| 637 (args) => new Yield(node.value != null ? visit(node.value)(args) : null, | |
| 638 star: node.star); | |
| 639 | |
| 640 Instantiator visitRestParameter(RestParameter node) => | |
| 641 (args) => new RestParameter(visit(node.parameter)(args)); | |
| 642 | |
| 643 Instantiator visitAccess(PropertyAccess node) { | |
| 644 Instantiator makeReceiver = visit(node.receiver); | |
| 645 Instantiator makeSelector = visit(node.selector); | |
| 646 return (arguments) => | |
| 647 new PropertyAccess(makeReceiver(arguments), makeSelector(arguments)); | |
| 648 } | |
| 649 | |
| 650 Instantiator visitNamedFunction(NamedFunction node) { | |
| 651 Instantiator makeDeclaration = visit(node.name); | |
| 652 Instantiator makeFunction = visit(node.function); | |
| 653 return (arguments) => | |
| 654 new NamedFunction(makeDeclaration(arguments), makeFunction(arguments)); | |
| 655 } | |
| 656 | |
| 657 Instantiator visitFunctionExpression(FunctionExpression node) { | |
| 658 List<Instantiator> paramMakers = node.params.map(visitSplayable).toList(); | |
| 659 Instantiator makeBody = visit(node.body); | |
| 660 // TODO(sra): Avoid copying params if no interpolation or forced copying. | |
| 661 return (arguments) { | |
| 662 List<Parameter> params = <Parameter>[]; | |
| 663 for (Instantiator instantiator in paramMakers) { | |
| 664 var result = instantiator(arguments); | |
| 665 if (result is Iterable) { | |
| 666 params.addAll(result); | |
| 667 } else { | |
| 668 params.add(result); | |
| 669 } | |
| 670 } | |
| 671 var body = makeBody(arguments); | |
| 672 if (node is ArrowFun) { | |
| 673 return new ArrowFun(params, body); | |
| 674 } else if (node is Fun) { | |
| 675 return new Fun(params, body); | |
| 676 } else { | |
| 677 throw "Unknown FunctionExpression type ${node.runtimeType}: $node"; | |
| 678 } | |
| 679 }; | |
| 680 } | |
| 681 | |
| 682 Instantiator visitFun(Fun node) => visitFunctionExpression(node); | |
| 683 | |
| 684 Instantiator visitArrowFun(ArrowFun node) => visitFunctionExpression(node); | |
| 685 | |
| 686 Instantiator visitLiteralBool(LiteralBool node) => | |
| 687 (arguments) => new LiteralBool(node.value); | |
| 688 | |
| 689 Instantiator visitLiteralString(LiteralString node) => | |
| 690 (arguments) => new LiteralString(node.value); | |
| 691 | |
| 692 Instantiator visitLiteralNumber(LiteralNumber node) => | |
| 693 (arguments) => new LiteralNumber(node.value); | |
| 694 | |
| 695 Instantiator visitLiteralNull(LiteralNull node) => | |
| 696 (arguments) => new LiteralNull(); | |
| 697 | |
| 698 Instantiator visitArrayInitializer(ArrayInitializer node) { | |
| 699 // TODO(sra): Implement splicing? | |
| 700 List<Instantiator> elementMakers = | |
| 701 node.elements.map(visit).toList(growable: false); | |
| 702 return (arguments) { | |
| 703 List<Expression> elements = elementMakers | |
| 704 .map((Instantiator instantiator) => instantiator(arguments)) | |
| 705 .toList(growable: false); | |
| 706 return new ArrayInitializer(elements); | |
| 707 }; | |
| 708 } | |
| 709 | |
| 710 Instantiator visitArrayHole(ArrayHole node) { | |
| 711 return (arguments) => new ArrayHole(); | |
| 712 } | |
| 713 | |
| 714 Instantiator visitObjectInitializer(ObjectInitializer node) { | |
| 715 List<Instantiator> propertyMakers = | |
| 716 node.properties.map(visitSplayable).toList(); | |
| 717 return (arguments) { | |
| 718 List<Property> properties = <Property>[]; | |
| 719 for (Instantiator instantiator in propertyMakers) { | |
| 720 var result = instantiator(arguments); | |
| 721 if (result is Iterable) { | |
| 722 properties.addAll(result); | |
| 723 } else { | |
| 724 properties.add(result); | |
| 725 } | |
| 726 } | |
| 727 return new ObjectInitializer(properties); | |
| 728 }; | |
| 729 } | |
| 730 | |
| 731 Instantiator visitProperty(Property node) { | |
| 732 Instantiator makeName = visit(node.name); | |
| 733 Instantiator makeValue = visit(node.value); | |
| 734 return (arguments) { | |
| 735 return new Property(makeName(arguments), makeValue(arguments)); | |
| 736 }; | |
| 737 } | |
| 738 | |
| 739 Instantiator visitRegExpLiteral(RegExpLiteral node) => | |
| 740 (arguments) => new RegExpLiteral(node.pattern); | |
| 741 | |
| 742 Instantiator visitTemplateString(TemplateString node) { | |
| 743 Iterable makeElements = | |
| 744 node.elements.map((e) => e is String ? e : visit(e)); | |
| 745 return (arguments) { | |
| 746 return new TemplateString(makeElements | |
| 747 .map((m) => m is String ? m : m(arguments)) | |
| 748 .toList(growable: false)); | |
| 749 }; | |
| 750 } | |
| 751 | |
| 752 Instantiator visitTaggedTemplate(TaggedTemplate node) { | |
| 753 Instantiator makeTag = visit(node.tag); | |
| 754 Instantiator makeTemplate = visit(node.template); | |
| 755 return (arguments) { | |
| 756 return new TaggedTemplate(makeTag(arguments), makeTemplate(arguments)); | |
| 757 }; | |
| 758 } | |
| 759 | |
| 760 Instantiator visitClassDeclaration(ClassDeclaration node) { | |
| 761 Instantiator makeClass = visit(node.classExpr); | |
| 762 return (arguments) { | |
| 763 return new ClassDeclaration(makeClass(arguments)); | |
| 764 }; | |
| 765 } | |
| 766 | |
| 767 Instantiator visitClassExpression(ClassExpression node) { | |
| 768 List<Instantiator> makeMethods = | |
| 769 node.methods.map(visitSplayableExpression).toList(growable: true); | |
| 770 Instantiator makeName = visit(node.name); | |
| 771 Instantiator makeHeritage = visit(node.heritage); | |
| 772 | |
| 773 return (arguments) { | |
| 774 var methods = <Method>[]; | |
| 775 for (Instantiator instantiator in makeMethods) { | |
| 776 var result = instantiator(arguments); | |
| 777 if (result is Iterable) { | |
| 778 methods.addAll(result); | |
| 779 } else { | |
| 780 methods.add(result); | |
| 781 } | |
| 782 } | |
| 783 return new ClassExpression( | |
| 784 makeName(arguments), makeHeritage(arguments), methods); | |
| 785 }; | |
| 786 } | |
| 787 | |
| 788 Instantiator visitMethod(Method node) { | |
| 789 Instantiator makeName = visit(node.name); | |
| 790 Instantiator makeFunction = visit(node.function); | |
| 791 return (arguments) { | |
| 792 return new Method(makeName(arguments), makeFunction(arguments), | |
| 793 isGetter: node.isGetter, | |
| 794 isSetter: node.isSetter, | |
| 795 isStatic: node.isStatic); | |
| 796 }; | |
| 797 } | |
| 798 | |
| 799 Instantiator visitComment(Comment node) => | |
| 800 (arguments) => new Comment(node.comment); | |
| 801 | |
| 802 Instantiator visitCommentExpression(CommentExpression node) { | |
| 803 Instantiator makeExpr = visit(node.expression); | |
| 804 return (arguments) { | |
| 805 return new CommentExpression(node.comment, makeExpr(arguments)); | |
| 806 }; | |
| 807 } | |
| 808 | |
| 809 Instantiator visitAwait(Await node) { | |
| 810 Instantiator makeExpression = visit(node.expression); | |
| 811 return (arguments) { | |
| 812 return new Await(makeExpression(arguments)); | |
| 813 }; | |
| 814 } | |
| 815 | |
| 816 // Note: these are not supported yet in the interpolation grammar. | |
| 817 Instantiator visitModule(Module node) => throw new UnimplementedError(); | |
| 818 Instantiator visitNameSpecifier(NameSpecifier node) => | |
| 819 throw new UnimplementedError(); | |
| 820 | |
| 821 Instantiator visitImportDeclaration(ImportDeclaration node) => | |
| 822 throw new UnimplementedError(); | |
| 823 | |
| 824 Instantiator visitExportDeclaration(ExportDeclaration node) => | |
| 825 throw new UnimplementedError(); | |
| 826 | |
| 827 Instantiator visitExportClause(ExportClause node) => | |
| 828 throw new UnimplementedError(); | |
| 829 | |
| 830 Instantiator visitAnyTypeRef(AnyTypeRef node) => | |
| 831 throw new UnimplementedError(); | |
| 832 | |
| 833 Instantiator visitUnknownTypeRef(UnknownTypeRef node) => | |
| 834 throw new UnimplementedError(); | |
| 835 | |
| 836 Instantiator visitArrayTypeRef(ArrayTypeRef node) => | |
| 837 throw new UnimplementedError(); | |
| 838 | |
| 839 Instantiator visitFunctionTypeRef(FunctionTypeRef node) => | |
| 840 throw new UnimplementedError(); | |
| 841 | |
| 842 Instantiator visitGenericTypeRef(GenericTypeRef node) => | |
| 843 throw new UnimplementedError(); | |
| 844 | |
| 845 Instantiator visitQualifiedTypeRef(QualifiedTypeRef node) => | |
| 846 throw new UnimplementedError(); | |
| 847 | |
| 848 Instantiator visitOptionalTypeRef(OptionalTypeRef node) => | |
| 849 throw new UnimplementedError(); | |
| 850 | |
| 851 Instantiator visitRecordTypeRef(RecordTypeRef node) => | |
| 852 throw new UnimplementedError(); | |
| 853 | |
| 854 Instantiator visitUnionTypeRef(UnionTypeRef node) => | |
| 855 throw new UnimplementedError(); | |
| 856 | |
| 857 @override | |
| 858 Instantiator visitDestructuredVariable(DestructuredVariable node) { | |
| 859 Instantiator makeName = visit(node.name); | |
| 860 Instantiator makeStructure = visit(node.structure); | |
| 861 Instantiator makeDefaultValue = visit(node.defaultValue); | |
| 862 return (arguments) { | |
| 863 return new DestructuredVariable( | |
| 864 name: makeName(arguments), | |
| 865 structure: makeStructure(arguments), | |
| 866 defaultValue: makeDefaultValue(arguments)); | |
| 867 }; | |
| 868 } | |
| 869 | |
| 870 @override | |
| 871 Instantiator visitArrayBindingPattern(ArrayBindingPattern node) { | |
| 872 List<Instantiator> makeVars = node.variables.map(this.visit).toList(); | |
| 873 return (arguments) { | |
| 874 return new ArrayBindingPattern( | |
| 875 makeVars.map((m) => m(arguments)).toList()); | |
| 876 }; | |
| 877 } | |
| 878 | |
| 879 @override | |
| 880 Instantiator visitObjectBindingPattern(ObjectBindingPattern node) { | |
| 881 List<Instantiator> makeVars = node.variables.map(this.visit).toList(); | |
| 882 return (arguments) { | |
| 883 return new ObjectBindingPattern( | |
| 884 makeVars.map((m) => m(arguments)).toList()); | |
| 885 }; | |
| 886 } | |
| 887 | |
| 888 @override | |
| 889 Instantiator visitSimpleBindingPattern(SimpleBindingPattern node) => | |
| 890 (arguments) => new SimpleBindingPattern(new Identifier(node.name.name)); | |
| 891 } | |
| 892 | |
| 893 /** | |
| 894 * InterpolatedNodeAnalysis determines which AST trees contain | |
| 895 * [InterpolatedNode]s, and the names of the named interpolated nodes. | |
| 896 */ | |
| 897 class InterpolatedNodeAnalysis extends BaseVisitor { | |
| 898 final Set<Node> containsInterpolatedNode = new Set<Node>(); | |
| 899 final Set<String> holeNames = new Set<String>(); | |
| 900 int count = 0; | |
| 901 | |
| 902 InterpolatedNodeAnalysis(); | |
| 903 | |
| 904 bool containsInterpolatedNodes(Node node) => | |
| 905 containsInterpolatedNode.contains(node); | |
| 906 | |
| 907 void visit(Node node) { | |
| 908 node.accept(this); | |
| 909 } | |
| 910 | |
| 911 void visitNode(Node node) { | |
| 912 int before = count; | |
| 913 node.visitChildren(this); | |
| 914 if (count != before) containsInterpolatedNode.add(node); | |
| 915 return null; | |
| 916 } | |
| 917 | |
| 918 visitInterpolatedNode(InterpolatedNode node) { | |
| 919 containsInterpolatedNode.add(node); | |
| 920 if (node.isNamed) holeNames.add(node.nameOrPosition); | |
| 921 ++count; | |
| 922 } | |
| 923 } | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 1879373004:
Implement modular compilation (Closed)
Base URL: git@github.com:dart-lang/dev_compiler.git@master