| 1 | /* |
| 2 | * Copyright 1999-2006 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package com.sun.tools.javac.tree; |
| 27 | |
| 28 | import com.sun.tools.javac.code.*; |
| 29 | import com.sun.tools.javac.code.Symbol.*; |
| 30 | import com.sun.tools.javac.code.Type.*; |
| 31 | import com.sun.tools.javac.util.*; |
| 32 | import com.sun.tools.javac.util.JCDiagnostic.DiagnosticPosition; |
| 33 | |
| 34 | import com.sun.tools.javac.tree.JCTree.*; |
| 35 | |
| 36 | import static com.sun.tools.javac.code.Flags.*; |
| 37 | import static com.sun.tools.javac.code.Kinds.*; |
| 38 | import static com.sun.tools.javac.code.TypeTags.*; |
| 39 | |
| 40 | /** Factory class for trees. |
| 41 | * |
| 42 | * <p><b>This is NOT part of any API supported by Sun Microsystems. If |
| 43 | * you write code that depends on this, you do so at your own risk. |
| 44 | * This code and its internal interfaces are subject to change or |
| 45 | * deletion without notice.</b> |
| 46 | */ |
| 47 | public class TreeMaker implements JCTree.Factory { |
| 48 | |
| 49 | /** The context key for the tree factory. */ |
| 50 | protected static final Context.Key<TreeMaker> treeMakerKey = |
| 51 | new Context.Key<TreeMaker>(); |
| 52 | |
| 53 | /** Get the TreeMaker instance. */ |
| 54 | public static TreeMaker instance(Context context) { |
| 55 | TreeMaker instance = context.get(treeMakerKey); |
| 56 | if (instance == null) |
| 57 | instance = new TreeMaker(context); |
| 58 | return instance; |
| 59 | } |
| 60 | |
| 61 | /** The position at which subsequent trees will be created. |
| 62 | */ |
| 63 | public int pos = Position.NOPOS; |
| 64 | |
| 65 | /** The toplevel tree to which created trees belong. |
| 66 | */ |
| 67 | public JCCompilationUnit toplevel; |
| 68 | |
| 69 | /** The current name table. */ |
| 70 | Name.Table names; |
| 71 | |
| 72 | Types types; |
| 73 | |
| 74 | /** The current symbol table. */ |
| 75 | Symtab syms; |
| 76 | |
| 77 | /** Create a tree maker with null toplevel and NOPOS as initial position. |
| 78 | */ |
| 79 | protected TreeMaker(Context context) { |
| 80 | context.put(treeMakerKey, this); |
| 81 | this.pos = Position.NOPOS; |
| 82 | this.toplevel = null; |
| 83 | this.names = Name.Table.instance(context); |
| 84 | this.syms = Symtab.instance(context); |
| 85 | this.types = Types.instance(context); |
| 86 | } |
| 87 | |
| 88 | /** Create a tree maker with a given toplevel and FIRSTPOS as initial position. |
| 89 | */ |
| 90 | TreeMaker(JCCompilationUnit toplevel, Name.Table names, Types types, Symtab syms) { |
| 91 | this.pos = Position.FIRSTPOS; |
| 92 | this.toplevel = toplevel; |
| 93 | this.names = names; |
| 94 | this.types = types; |
| 95 | this.syms = syms; |
| 96 | } |
| 97 | |
| 98 | /** Create a new tree maker for a given toplevel. |
| 99 | */ |
| 100 | public TreeMaker forToplevel(JCCompilationUnit toplevel) { |
| 101 | return new TreeMaker(toplevel, names, types, syms); |
| 102 | } |
| 103 | |
| 104 | /** Reassign current position. |
| 105 | */ |
| 106 | public TreeMaker at(int pos) { |
| 107 | this.pos = pos; |
| 108 | return this; |
| 109 | } |
| 110 | |
| 111 | /** Reassign current position. |
| 112 | */ |
| 113 | public TreeMaker at(DiagnosticPosition pos) { |
| 114 | this.pos = (pos == null ? Position.NOPOS : pos.getStartPosition()); |
| 115 | return this; |
| 116 | } |
| 117 | |
| 118 | /** |
| 119 | * Create given tree node at current position. |
| 120 | * @param defs a list of ClassDef, Import, and Skip |
| 121 | */ |
| 122 | public JCCompilationUnit TopLevel(List<JCAnnotation> packageAnnotations, |
| 123 | JCExpression pid, |
| 124 | List<JCTree> defs) { |
| 125 | assert packageAnnotations != null; |
| 126 | for (JCTree node : defs) |
| 127 | assert node instanceof JCClassDecl |
| 128 | || node instanceof JCImport |
| 129 | || node instanceof JCSkip |
| 130 | || node instanceof JCErroneous |
| 131 | || (node instanceof JCExpressionStatement |
| 132 | && ((JCExpressionStatement)node).expr instanceof JCErroneous) |
| 133 | : node.getClass().getSimpleName(); |
| 134 | JCCompilationUnit tree = new JCCompilationUnit(packageAnnotations, pid, defs, |
| 135 | null, null, null, null); |
| 136 | tree.pos = pos; |
| 137 | return tree; |
| 138 | } |
| 139 | |
| 140 | public JCImport Import(JCTree qualid, boolean importStatic) { |
| 141 | JCImport tree = new JCImport(qualid, importStatic); |
| 142 | tree.pos = pos; |
| 143 | return tree; |
| 144 | } |
| 145 | |
| 146 | public JCClassDecl ClassDef(JCModifiers mods, |
| 147 | Name name, |
| 148 | List<JCTypeParameter> typarams, |
| 149 | JCTree extending, |
| 150 | List<JCExpression> implementing, |
| 151 | List<JCTree> defs) |
| 152 | { |
| 153 | JCClassDecl tree = new JCClassDecl(mods, |
| 154 | name, |
| 155 | typarams, |
| 156 | extending, |
| 157 | implementing, |
| 158 | defs, |
| 159 | null); |
| 160 | tree.pos = pos; |
| 161 | return tree; |
| 162 | } |
| 163 | |
| 164 | public JCMethodDecl MethodDef(JCModifiers mods, |
| 165 | Name name, |
| 166 | JCExpression restype, |
| 167 | List<JCTypeParameter> typarams, |
| 168 | List<JCVariableDecl> params, |
| 169 | List<JCExpression> thrown, |
| 170 | JCBlock body, |
| 171 | JCExpression defaultValue) |
| 172 | { |
| 173 | JCMethodDecl tree = new JCMethodDecl(mods, |
| 174 | name, |
| 175 | restype, |
| 176 | typarams, |
| 177 | params, |
| 178 | thrown, |
| 179 | body, |
| 180 | defaultValue, |
| 181 | null); |
| 182 | tree.pos = pos; |
| 183 | return tree; |
| 184 | } |
| 185 | |
| 186 | public JCVariableDecl VarDef(JCModifiers mods, Name name, JCExpression vartype, JCExpression init) { |
| 187 | JCVariableDecl tree = new JCVariableDecl(mods, name, vartype, init, null); |
| 188 | tree.pos = pos; |
| 189 | return tree; |
| 190 | } |
| 191 | |
| 192 | public JCSkip Skip() { |
| 193 | JCSkip tree = new JCSkip(); |
| 194 | tree.pos = pos; |
| 195 | return tree; |
| 196 | } |
| 197 | |
| 198 | public JCBlock Block(long flags, List<JCStatement> stats) { |
| 199 | JCBlock tree = new JCBlock(flags, stats); |
| 200 | tree.pos = pos; |
| 201 | return tree; |
| 202 | } |
| 203 | |
| 204 | public JCDoWhileLoop DoLoop(JCStatement body, JCExpression cond) { |
| 205 | JCDoWhileLoop tree = new JCDoWhileLoop(body, cond); |
| 206 | tree.pos = pos; |
| 207 | return tree; |
| 208 | } |
| 209 | |
| 210 | public JCWhileLoop WhileLoop(JCExpression cond, JCStatement body) { |
| 211 | JCWhileLoop tree = new JCWhileLoop(cond, body); |
| 212 | tree.pos = pos; |
| 213 | return tree; |
| 214 | } |
| 215 | |
| 216 | public JCForLoop ForLoop(List<JCStatement> init, |
| 217 | JCExpression cond, |
| 218 | List<JCExpressionStatement> step, |
| 219 | JCStatement body) |
| 220 | { |
| 221 | JCForLoop tree = new JCForLoop(init, cond, step, body); |
| 222 | tree.pos = pos; |
| 223 | return tree; |
| 224 | } |
| 225 | |
| 226 | public JCEnhancedForLoop ForeachLoop(JCVariableDecl var, JCExpression expr, JCStatement body) { |
| 227 | JCEnhancedForLoop tree = new JCEnhancedForLoop(var, expr, body); |
| 228 | tree.pos = pos; |
| 229 | return tree; |
| 230 | } |
| 231 | |
| 232 | public JCLabeledStatement Labelled(Name label, JCStatement body) { |
| 233 | JCLabeledStatement tree = new JCLabeledStatement(label, body); |
| 234 | tree.pos = pos; |
| 235 | return tree; |
| 236 | } |
| 237 | |
| 238 | public JCSwitch Switch(JCExpression selector, List<JCCase> cases) { |
| 239 | JCSwitch tree = new JCSwitch(selector, cases); |
| 240 | tree.pos = pos; |
| 241 | return tree; |
| 242 | } |
| 243 | |
| 244 | public JCCase Case(JCExpression pat, List<JCStatement> stats) { |
| 245 | JCCase tree = new JCCase(pat, stats); |
| 246 | tree.pos = pos; |
| 247 | return tree; |
| 248 | } |
| 249 | |
| 250 | public JCSynchronized Synchronized(JCExpression lock, JCBlock body) { |
| 251 | JCSynchronized tree = new JCSynchronized(lock, body); |
| 252 | tree.pos = pos; |
| 253 | return tree; |
| 254 | } |
| 255 | |
| 256 | public JCTry Try(JCBlock body, List<JCCatch> catchers, JCBlock finalizer) { |
| 257 | JCTry tree = new JCTry(body, catchers, finalizer); |
| 258 | tree.pos = pos; |
| 259 | return tree; |
| 260 | } |
| 261 | |
| 262 | public JCCatch Catch(JCVariableDecl param, JCBlock body) { |
| 263 | JCCatch tree = new JCCatch(param, body); |
| 264 | tree.pos = pos; |
| 265 | return tree; |
| 266 | } |
| 267 | |
| 268 | public JCConditional Conditional(JCExpression cond, |
| 269 | JCExpression thenpart, |
| 270 | JCExpression elsepart) |
| 271 | { |
| 272 | JCConditional tree = new JCConditional(cond, thenpart, elsepart); |
| 273 | tree.pos = pos; |
| 274 | return tree; |
| 275 | } |
| 276 | |
| 277 | public JCIf If(JCExpression cond, JCStatement thenpart, JCStatement elsepart) { |
| 278 | JCIf tree = new JCIf(cond, thenpart, elsepart); |
| 279 | tree.pos = pos; |
| 280 | return tree; |
| 281 | } |
| 282 | |
| 283 | public JCExpressionStatement Exec(JCExpression expr) { |
| 284 | JCExpressionStatement tree = new JCExpressionStatement(expr); |
| 285 | tree.pos = pos; |
| 286 | return tree; |
| 287 | } |
| 288 | |
| 289 | public JCBreak Break(Name label) { |
| 290 | JCBreak tree = new JCBreak(label, null); |
| 291 | tree.pos = pos; |
| 292 | return tree; |
| 293 | } |
| 294 | |
| 295 | public JCContinue Continue(Name label) { |
| 296 | JCContinue tree = new JCContinue(label, null); |
| 297 | tree.pos = pos; |
| 298 | return tree; |
| 299 | } |
| 300 | |
| 301 | public JCReturn Return(JCExpression expr) { |
| 302 | JCReturn tree = new JCReturn(expr); |
| 303 | tree.pos = pos; |
| 304 | return tree; |
| 305 | } |
| 306 | |
| 307 | public JCThrow Throw(JCTree expr) { |
| 308 | JCThrow tree = new JCThrow(expr); |
| 309 | tree.pos = pos; |
| 310 | return tree; |
| 311 | } |
| 312 | |
| 313 | public JCAssert Assert(JCExpression cond, JCExpression detail) { |
| 314 | JCAssert tree = new JCAssert(cond, detail); |
| 315 | tree.pos = pos; |
| 316 | return tree; |
| 317 | } |
| 318 | |
| 319 | public JCMethodInvocation Apply(List<JCExpression> typeargs, |
| 320 | JCExpression fn, |
| 321 | List<JCExpression> args) |
| 322 | { |
| 323 | JCMethodInvocation tree = new JCMethodInvocation(typeargs, fn, args); |
| 324 | tree.pos = pos; |
| 325 | return tree; |
| 326 | } |
| 327 | |
| 328 | public JCNewClass NewClass(JCExpression encl, |
| 329 | List<JCExpression> typeargs, |
| 330 | JCExpression clazz, |
| 331 | List<JCExpression> args, |
| 332 | JCClassDecl def) |
| 333 | { |
| 334 | JCNewClass tree = new JCNewClass(encl, typeargs, clazz, args, def); |
| 335 | tree.pos = pos; |
| 336 | return tree; |
| 337 | } |
| 338 | |
| 339 | public JCNewArray NewArray(JCExpression elemtype, |
| 340 | List<JCExpression> dims, |
| 341 | List<JCExpression> elems) |
| 342 | { |
| 343 | JCNewArray tree = new JCNewArray(elemtype, dims, elems); |
| 344 | tree.pos = pos; |
| 345 | return tree; |
| 346 | } |
| 347 | |
| 348 | public JCParens Parens(JCExpression expr) { |
| 349 | JCParens tree = new JCParens(expr); |
| 350 | tree.pos = pos; |
| 351 | return tree; |
| 352 | } |
| 353 | |
| 354 | public JCAssign Assign(JCExpression lhs, JCExpression rhs) { |
| 355 | JCAssign tree = new JCAssign(lhs, rhs); |
| 356 | tree.pos = pos; |
| 357 | return tree; |
| 358 | } |
| 359 | |
| 360 | public JCAssignOp Assignop(int opcode, JCTree lhs, JCTree rhs) { |
| 361 | JCAssignOp tree = new JCAssignOp(opcode, lhs, rhs, null); |
| 362 | tree.pos = pos; |
| 363 | return tree; |
| 364 | } |
| 365 | |
| 366 | public JCUnary Unary(int opcode, JCExpression arg) { |
| 367 | JCUnary tree = new JCUnary(opcode, arg); |
| 368 | tree.pos = pos; |
| 369 | return tree; |
| 370 | } |
| 371 | |
| 372 | public JCBinary Binary(int opcode, JCExpression lhs, JCExpression rhs) { |
| 373 | JCBinary tree = new JCBinary(opcode, lhs, rhs, null); |
| 374 | tree.pos = pos; |
| 375 | return tree; |
| 376 | } |
| 377 | |
| 378 | public JCTypeCast TypeCast(JCTree clazz, JCExpression expr) { |
| 379 | JCTypeCast tree = new JCTypeCast(clazz, expr); |
| 380 | tree.pos = pos; |
| 381 | return tree; |
| 382 | } |
| 383 | |
| 384 | public JCInstanceOf TypeTest(JCExpression expr, JCTree clazz) { |
| 385 | JCInstanceOf tree = new JCInstanceOf(expr, clazz); |
| 386 | tree.pos = pos; |
| 387 | return tree; |
| 388 | } |
| 389 | |
| 390 | public JCArrayAccess Indexed(JCExpression indexed, JCExpression index) { |
| 391 | JCArrayAccess tree = new JCArrayAccess(indexed, index); |
| 392 | tree.pos = pos; |
| 393 | return tree; |
| 394 | } |
| 395 | |
| 396 | public JCFieldAccess Select(JCExpression selected, Name selector) { |
| 397 | JCFieldAccess tree = new JCFieldAccess(selected, selector, null); |
| 398 | tree.pos = pos; |
| 399 | return tree; |
| 400 | } |
| 401 | |
| 402 | public JCIdent Ident(Name name) { |
| 403 | JCIdent tree = new JCIdent(name, null); |
| 404 | tree.pos = pos; |
| 405 | return tree; |
| 406 | } |
| 407 | |
| 408 | public JCLiteral Literal(int tag, Object value) { |
| 409 | JCLiteral tree = new JCLiteral(tag, value); |
| 410 | tree.pos = pos; |
| 411 | return tree; |
| 412 | } |
| 413 | |
| 414 | public JCPrimitiveTypeTree TypeIdent(int typetag) { |
| 415 | JCPrimitiveTypeTree tree = new JCPrimitiveTypeTree(typetag); |
| 416 | tree.pos = pos; |
| 417 | return tree; |
| 418 | } |
| 419 | |
| 420 | public JCArrayTypeTree TypeArray(JCExpression elemtype) { |
| 421 | JCArrayTypeTree tree = new JCArrayTypeTree(elemtype); |
| 422 | tree.pos = pos; |
| 423 | return tree; |
| 424 | } |
| 425 | |
| 426 | public JCTypeApply TypeApply(JCExpression clazz, List<JCExpression> arguments) { |
| 427 | JCTypeApply tree = new JCTypeApply(clazz, arguments); |
| 428 | tree.pos = pos; |
| 429 | return tree; |
| 430 | } |
| 431 | |
| 432 | public JCTypeParameter TypeParameter(Name name, List<JCExpression> bounds) { |
| 433 | JCTypeParameter tree = new JCTypeParameter(name, bounds); |
| 434 | tree.pos = pos; |
| 435 | return tree; |
| 436 | } |
| 437 | |
| 438 | public JCWildcard Wildcard(TypeBoundKind kind, JCTree type) { |
| 439 | JCWildcard tree = new JCWildcard(kind, type); |
| 440 | tree.pos = pos; |
| 441 | return tree; |
| 442 | } |
| 443 | |
| 444 | public TypeBoundKind TypeBoundKind(BoundKind kind) { |
| 445 | TypeBoundKind tree = new TypeBoundKind(kind); |
| 446 | tree.pos = pos; |
| 447 | return tree; |
| 448 | } |
| 449 | |
| 450 | public JCAnnotation Annotation(JCTree annotationType, List<JCExpression> args) { |
| 451 | JCAnnotation tree = new JCAnnotation(annotationType, args); |
| 452 | tree.pos = pos; |
| 453 | return tree; |
| 454 | } |
| 455 | |
| 456 | public JCModifiers Modifiers(long flags, List<JCAnnotation> annotations) { |
| 457 | JCModifiers tree = new JCModifiers(flags, annotations); |
| 458 | boolean noFlags = (flags & Flags.StandardFlags) == 0; |
| 459 | tree.pos = (noFlags && annotations.isEmpty()) ? Position.NOPOS : pos; |
| 460 | return tree; |
| 461 | } |
| 462 | |
| 463 | public JCModifiers Modifiers(long flags) { |
| 464 | return Modifiers(flags, List.<JCAnnotation>nil()); |
| 465 | } |
| 466 | |
| 467 | public JCErroneous Erroneous() { |
| 468 | return Erroneous(List.<JCTree>nil()); |
| 469 | } |
| 470 | |
| 471 | public JCErroneous Erroneous(List<? extends JCTree> errs) { |
| 472 | JCErroneous tree = new JCErroneous(errs); |
| 473 | tree.pos = pos; |
| 474 | return tree; |
| 475 | } |
| 476 | |
| 477 | public LetExpr LetExpr(List<JCVariableDecl> defs, JCTree expr) { |
| 478 | LetExpr tree = new LetExpr(defs, expr); |
| 479 | tree.pos = pos; |
| 480 | return tree; |
| 481 | } |
| 482 | |
| 483 | /* *************************************************************************** |
| 484 | * Derived building blocks. |
| 485 | ****************************************************************************/ |
| 486 | |
| 487 | public JCClassDecl AnonymousClassDef(JCModifiers mods, |
| 488 | List<JCTree> defs) |
| 489 | { |
| 490 | return ClassDef(mods, |
| 491 | names.empty, |
| 492 | List.<JCTypeParameter>nil(), |
| 493 | null, |
| 494 | List.<JCExpression>nil(), |
| 495 | defs); |
| 496 | } |
| 497 | |
| 498 | public LetExpr LetExpr(JCVariableDecl def, JCTree expr) { |
| 499 | LetExpr tree = new LetExpr(List.of(def), expr); |
| 500 | tree.pos = pos; |
| 501 | return tree; |
| 502 | } |
| 503 | |
| 504 | /** Create an identifier from a symbol. |
| 505 | */ |
| 506 | public JCIdent Ident(Symbol sym) { |
| 507 | return (JCIdent)new JCIdent((sym.name != names.empty) |
| 508 | ? sym.name |
| 509 | : sym.flatName(), sym) |
| 510 | .setPos(pos) |
| 511 | .setType(sym.type); |
| 512 | } |
| 513 | |
| 514 | /** Create a selection node from a qualifier tree and a symbol. |
| 515 | * @param base The qualifier tree. |
| 516 | */ |
| 517 | public JCExpression Select(JCExpression base, Symbol sym) { |
| 518 | return new JCFieldAccess(base, sym.name, sym).setPos(pos).setType(sym.type); |
| 519 | } |
| 520 | |
| 521 | /** Create a qualified identifier from a symbol, adding enough qualifications |
| 522 | * to make the reference unique. |
| 523 | */ |
| 524 | public JCExpression QualIdent(Symbol sym) { |
| 525 | return isUnqualifiable(sym) |
| 526 | ? Ident(sym) |
| 527 | : Select(QualIdent(sym.owner), sym); |
| 528 | } |
| 529 | |
| 530 | /** Create an identifier that refers to the variable declared in given variable |
| 531 | * declaration. |
| 532 | */ |
| 533 | public JCExpression Ident(JCVariableDecl param) { |
| 534 | return Ident(param.sym); |
| 535 | } |
| 536 | |
| 537 | /** Create a list of identifiers referring to the variables declared |
| 538 | * in given list of variable declarations. |
| 539 | */ |
| 540 | public List<JCExpression> Idents(List<JCVariableDecl> params) { |
| 541 | ListBuffer<JCExpression> ids = new ListBuffer<JCExpression>(); |
| 542 | for (List<JCVariableDecl> l = params; l.nonEmpty(); l = l.tail) |
| 543 | ids.append(Ident(l.head)); |
| 544 | return ids.toList(); |
| 545 | } |
| 546 | |
| 547 | /** Create a tree representing `this', given its type. |
| 548 | */ |
| 549 | public JCExpression This(Type t) { |
| 550 | return Ident(new VarSymbol(FINAL, names._this, t, t.tsym)); |
| 551 | } |
| 552 | |
| 553 | /** Create a tree representing a class literal. |
| 554 | */ |
| 555 | public JCExpression ClassLiteral(ClassSymbol clazz) { |
| 556 | return ClassLiteral(clazz.type); |
| 557 | } |
| 558 | |
| 559 | /** Create a tree representing a class literal. |
| 560 | */ |
| 561 | public JCExpression ClassLiteral(Type t) { |
| 562 | VarSymbol lit = new VarSymbol(STATIC | PUBLIC | FINAL, |
| 563 | names._class, |
| 564 | t, |
| 565 | t.tsym); |
| 566 | return Select(Type(t), lit); |
| 567 | } |
| 568 | |
| 569 | /** Create a tree representing `super', given its type and owner. |
| 570 | */ |
| 571 | public JCIdent Super(Type t, TypeSymbol owner) { |
| 572 | return Ident(new VarSymbol(FINAL, names._super, t, owner)); |
| 573 | } |
| 574 | |
| 575 | /** |
| 576 | * Create a method invocation from a method tree and a list of |
| 577 | * argument trees. |
| 578 | */ |
| 579 | public JCMethodInvocation App(JCExpression meth, List<JCExpression> args) { |
| 580 | return Apply(null, meth, args).setType(meth.type.getReturnType()); |
| 581 | } |
| 582 | |
| 583 | /** |
| 584 | * Create a no-arg method invocation from a method tree |
| 585 | */ |
| 586 | public JCMethodInvocation App(JCExpression meth) { |
| 587 | return Apply(null, meth, List.<JCExpression>nil()).setType(meth.type.getReturnType()); |
| 588 | } |
| 589 | |
| 590 | /** Create a method invocation from a method tree and a list of argument trees. |
| 591 | */ |
| 592 | public JCExpression Create(Symbol ctor, List<JCExpression> args) { |
| 593 | Type t = ctor.owner.erasure(types); |
| 594 | JCNewClass newclass = NewClass(null, null, Type(t), args, null); |
| 595 | newclass.constructor = ctor; |
| 596 | newclass.setType(t); |
| 597 | return newclass; |
| 598 | } |
| 599 | |
| 600 | /** Create a tree representing given type. |
| 601 | */ |
| 602 | public JCExpression Type(Type t) { |
| 603 | if (t == null) return null; |
| 604 | JCExpression tp; |
| 605 | switch (t.tag) { |
| 606 | case BYTE: case CHAR: case SHORT: case INT: case LONG: case FLOAT: |
| 607 | case DOUBLE: case BOOLEAN: case VOID: |
| 608 | tp = TypeIdent(t.tag); |
| 609 | break; |
| 610 | case TYPEVAR: |
| 611 | tp = Ident(t.tsym); |
| 612 | break; |
| 613 | case WILDCARD: { |
| 614 | WildcardType a = ((WildcardType) t); |
| 615 | tp = Wildcard(TypeBoundKind(a.kind), Type(a.type)); |
| 616 | break; |
| 617 | } |
| 618 | case CLASS: |
| 619 | Type outer = t.getEnclosingType(); |
| 620 | JCExpression clazz = outer.tag == CLASS && t.tsym.owner.kind == TYP |
| 621 | ? Select(Type(outer), t.tsym) |
| 622 | : QualIdent(t.tsym); |
| 623 | tp = t.getTypeArguments().isEmpty() |
| 624 | ? clazz |
| 625 | : TypeApply(clazz, Types(t.getTypeArguments())); |
| 626 | break; |
| 627 | case ARRAY: |
| 628 | tp = TypeArray(Type(types.elemtype(t))); |
| 629 | break; |
| 630 | case ERROR: |
| 631 | tp = TypeIdent(ERROR); |
| 632 | break; |
| 633 | default: |
| 634 | throw new AssertionError("unexpected type: " + t); |
| 635 | } |
| 636 | return tp.setType(t); |
| 637 | } |
| 638 | //where |
| 639 | private JCExpression Selectors(JCExpression base, Symbol sym, Symbol limit) { |
| 640 | if (sym == limit) return base; |
| 641 | else return Select(Selectors(base, sym.owner, limit), sym); |
| 642 | } |
| 643 | |
| 644 | /** Create a list of trees representing given list of types. |
| 645 | */ |
| 646 | public List<JCExpression> Types(List<Type> ts) { |
| 647 | ListBuffer<JCExpression> types = new ListBuffer<JCExpression>(); |
| 648 | for (List<Type> l = ts; l.nonEmpty(); l = l.tail) |
| 649 | types.append(Type(l.head)); |
| 650 | return types.toList(); |
| 651 | } |
| 652 | |
| 653 | /** Create a variable definition from a variable symbol and an initializer |
| 654 | * expression. |
| 655 | */ |
| 656 | public JCVariableDecl VarDef(VarSymbol v, JCExpression init) { |
| 657 | return (JCVariableDecl) |
| 658 | new JCVariableDecl( |
| 659 | Modifiers(v.flags(), Annotations(v.getAnnotationMirrors())), |
| 660 | v.name, |
| 661 | Type(v.type), |
| 662 | init, |
| 663 | v).setPos(pos).setType(v.type); |
| 664 | } |
| 665 | |
| 666 | /** Create annotation trees from annotations. |
| 667 | */ |
| 668 | public List<JCAnnotation> Annotations(List<Attribute.Compound> attributes) { |
| 669 | if (attributes == null) return List.nil(); |
| 670 | ListBuffer<JCAnnotation> result = new ListBuffer<JCAnnotation>(); |
| 671 | for (List<Attribute.Compound> i = attributes; i.nonEmpty(); i=i.tail) { |
| 672 | Attribute a = i.head; |
| 673 | result.append(Annotation(a)); |
| 674 | } |
| 675 | return result.toList(); |
| 676 | } |
| 677 | |
| 678 | public JCLiteral Literal(Object value) { |
| 679 | JCLiteral result = null; |
| 680 | if (value instanceof String) { |
| 681 | result = Literal(CLASS, value). |
| 682 | setType(syms.stringType.constType(value)); |
| 683 | } else if (value instanceof Integer) { |
| 684 | result = Literal(INT, value). |
| 685 | setType(syms.intType.constType(value)); |
| 686 | } else if (value instanceof Long) { |
| 687 | result = Literal(LONG, value). |
| 688 | setType(syms.longType.constType(value)); |
| 689 | } else if (value instanceof Byte) { |
| 690 | result = Literal(BYTE, value). |
| 691 | setType(syms.byteType.constType(value)); |
| 692 | } else if (value instanceof Character) { |
| 693 | result = Literal(CHAR, value). |
| 694 | setType(syms.charType.constType(value)); |
| 695 | } else if (value instanceof Double) { |
| 696 | result = Literal(DOUBLE, value). |
| 697 | setType(syms.doubleType.constType(value)); |
| 698 | } else if (value instanceof Float) { |
| 699 | result = Literal(FLOAT, value). |
| 700 | setType(syms.floatType.constType(value)); |
| 701 | } else if (value instanceof Short) { |
| 702 | result = Literal(SHORT, value). |
| 703 | setType(syms.shortType.constType(value)); |
| 704 | } else { |
| 705 | throw new AssertionError(value); |
| 706 | } |
| 707 | return result; |
| 708 | } |
| 709 | |
| 710 | class AnnotationBuilder implements Attribute.Visitor { |
| 711 | JCExpression result = null; |
| 712 | public void visitConstant(Attribute.Constant v) { |
| 713 | result = Literal(v.value); |
| 714 | } |
| 715 | public void visitClass(Attribute.Class clazz) { |
| 716 | result = ClassLiteral(clazz.type).setType(syms.classType); |
| 717 | } |
| 718 | public void visitEnum(Attribute.Enum e) { |
| 719 | result = QualIdent(e.value); |
| 720 | } |
| 721 | public void visitError(Attribute.Error e) { |
| 722 | result = Erroneous(); |
| 723 | } |
| 724 | public void visitCompound(Attribute.Compound compound) { |
| 725 | result = visitCompoundInternal(compound); |
| 726 | } |
| 727 | public JCAnnotation visitCompoundInternal(Attribute.Compound compound) { |
| 728 | ListBuffer<JCExpression> args = new ListBuffer<JCExpression>(); |
| 729 | for (List<Pair<Symbol.MethodSymbol,Attribute>> values = compound.values; values.nonEmpty(); values=values.tail) { |
| 730 | Pair<MethodSymbol,Attribute> pair = values.head; |
| 731 | JCExpression valueTree = translate(pair.snd); |
| 732 | args.append(Assign(Ident(pair.fst), valueTree).setType(valueTree.type)); |
| 733 | } |
| 734 | return Annotation(Type(compound.type), args.toList()); |
| 735 | } |
| 736 | public void visitArray(Attribute.Array array) { |
| 737 | ListBuffer<JCExpression> elems = new ListBuffer<JCExpression>(); |
| 738 | for (int i = 0; i < array.values.length; i++) |
| 739 | elems.append(translate(array.values[i])); |
| 740 | result = NewArray(null, List.<JCExpression>nil(), elems.toList()).setType(array.type); |
| 741 | } |
| 742 | JCExpression translate(Attribute a) { |
| 743 | a.accept(this); |
| 744 | return result; |
| 745 | } |
| 746 | JCAnnotation translate(Attribute.Compound a) { |
| 747 | return visitCompoundInternal(a); |
| 748 | } |
| 749 | } |
| 750 | AnnotationBuilder annotationBuilder = new AnnotationBuilder(); |
| 751 | |
| 752 | /** Create an annotation tree from an attribute. |
| 753 | */ |
| 754 | public JCAnnotation Annotation(Attribute a) { |
| 755 | return annotationBuilder.translate((Attribute.Compound)a); |
| 756 | } |
| 757 | |
| 758 | /** Create a method definition from a method symbol and a method body. |
| 759 | */ |
| 760 | public JCMethodDecl MethodDef(MethodSymbol m, JCBlock body) { |
| 761 | return MethodDef(m, m.type, body); |
| 762 | } |
| 763 | |
| 764 | /** Create a method definition from a method symbol, method type |
| 765 | * and a method body. |
| 766 | */ |
| 767 | public JCMethodDecl MethodDef(MethodSymbol m, Type mtype, JCBlock body) { |
| 768 | return (JCMethodDecl) |
| 769 | new JCMethodDecl( |
| 770 | Modifiers(m.flags(), Annotations(m.getAnnotationMirrors())), |
| 771 | m.name, |
| 772 | Type(mtype.getReturnType()), |
| 773 | TypeParams(mtype.getTypeArguments()), |
| 774 | Params(mtype.getParameterTypes(), m), |
| 775 | Types(mtype.getThrownTypes()), |
| 776 | body, |
| 777 | null, |
| 778 | m).setPos(pos).setType(mtype); |
| 779 | } |
| 780 | |
| 781 | /** Create a type parameter tree from its name and type. |
| 782 | */ |
| 783 | public JCTypeParameter TypeParam(Name name, TypeVar tvar) { |
| 784 | return (JCTypeParameter) |
| 785 | TypeParameter(name, Types(types.getBounds(tvar))).setPos(pos).setType(tvar); |
| 786 | } |
| 787 | |
| 788 | /** Create a list of type parameter trees from a list of type variables. |
| 789 | */ |
| 790 | public List<JCTypeParameter> TypeParams(List<Type> typarams) { |
| 791 | ListBuffer<JCTypeParameter> tparams = new ListBuffer<JCTypeParameter>(); |
| 792 | int i = 0; |
| 793 | for (List<Type> l = typarams; l.nonEmpty(); l = l.tail) |
| 794 | tparams.append(TypeParam(l.head.tsym.name, (TypeVar)l.head)); |
| 795 | return tparams.toList(); |
| 796 | } |
| 797 | |
| 798 | /** Create a value parameter tree from its name, type, and owner. |
| 799 | */ |
| 800 | public JCVariableDecl Param(Name name, Type argtype, Symbol owner) { |
| 801 | return VarDef(new VarSymbol(0, name, argtype, owner), null); |
| 802 | } |
| 803 | |
| 804 | /** Create a a list of value parameter trees x0, ..., xn from a list of |
| 805 | * their types and an their owner. |
| 806 | */ |
| 807 | public List<JCVariableDecl> Params(List<Type> argtypes, Symbol owner) { |
| 808 | ListBuffer<JCVariableDecl> params = new ListBuffer<JCVariableDecl>(); |
| 809 | MethodSymbol mth = (owner.kind == MTH) ? ((MethodSymbol)owner) : null; |
| 810 | if (mth != null && mth.params != null && argtypes.length() == mth.params.length()) { |
| 811 | for (VarSymbol param : ((MethodSymbol)owner).params) |
| 812 | params.append(VarDef(param, null)); |
| 813 | } else { |
| 814 | int i = 0; |
| 815 | for (List<Type> l = argtypes; l.nonEmpty(); l = l.tail) |
| 816 | params.append(Param(paramName(i++), l.head, owner)); |
| 817 | } |
| 818 | return params.toList(); |
| 819 | } |
| 820 | |
| 821 | /** Wrap a method invocation in an expression statement or return statement, |
| 822 | * depending on whether the method invocation expression's type is void. |
| 823 | */ |
| 824 | public JCStatement Call(JCExpression apply) { |
| 825 | return apply.type.tag == VOID ? Exec(apply) : Return(apply); |
| 826 | } |
| 827 | |
| 828 | /** Construct an assignment from a variable symbol and a right hand side. |
| 829 | */ |
| 830 | public JCStatement Assignment(Symbol v, JCExpression rhs) { |
| 831 | return Exec(Assign(Ident(v), rhs).setType(v.type)); |
| 832 | } |
| 833 | |
| 834 | /** Construct an index expression from a variable and an expression. |
| 835 | */ |
| 836 | public JCArrayAccess Indexed(Symbol v, JCExpression index) { |
| 837 | JCArrayAccess tree = new JCArrayAccess(QualIdent(v), index); |
| 838 | tree.type = ((ArrayType)v.type).elemtype; |
| 839 | return tree; |
| 840 | } |
| 841 | |
| 842 | /** Make an attributed type cast expression. |
| 843 | */ |
| 844 | public JCTypeCast TypeCast(Type type, JCExpression expr) { |
| 845 | return (JCTypeCast)TypeCast(Type(type), expr).setType(type); |
| 846 | } |
| 847 | |
| 848 | /* *************************************************************************** |
| 849 | * Helper methods. |
| 850 | ****************************************************************************/ |
| 851 | |
| 852 | /** Can given symbol be referred to in unqualified form? |
| 853 | */ |
| 854 | boolean isUnqualifiable(Symbol sym) { |
| 855 | if (sym.name == names.empty || |
| 856 | sym.owner == null || |
| 857 | sym.owner.kind == MTH || sym.owner.kind == VAR) { |
| 858 | return true; |
| 859 | } else if (sym.kind == TYP && toplevel != null) { |
| 860 | Scope.Entry e; |
| 861 | e = toplevel.namedImportScope.lookup(sym.name); |
| 862 | if (e.scope != null) { |
| 863 | return |
| 864 | e.sym == sym && |
| 865 | e.next().scope == null; |
| 866 | } |
| 867 | e = toplevel.packge.members().lookup(sym.name); |
| 868 | if (e.scope != null) { |
| 869 | return |
| 870 | e.sym == sym && |
| 871 | e.next().scope == null; |
| 872 | } |
| 873 | e = toplevel.starImportScope.lookup(sym.name); |
| 874 | if (e.scope != null) { |
| 875 | return |
| 876 | e.sym == sym && |
| 877 | e.next().scope == null; |
| 878 | } |
| 879 | } |
| 880 | return false; |
| 881 | } |
| 882 | |
| 883 | /** The name of synthetic parameter number `i'. |
| 884 | */ |
| 885 | public Name paramName(int i) { return names.fromString("x" + i); } |
| 886 | |
| 887 | /** The name of synthetic type parameter number `i'. |
| 888 | */ |
| 889 | public Name typaramName(int i) { return names.fromString("A" + i); } |
| 890 | } |