| /* |
| * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.tools.javac.tree; |
| |
| import com.sun.tools.javac.code.*; |
| import com.sun.tools.javac.code.Symbol.*; |
| import com.sun.tools.javac.code.Type.*; |
| import com.sun.tools.javac.util.*; |
| import com.sun.tools.javac.util.JCDiagnostic.DiagnosticPosition; |
| |
| import com.sun.tools.javac.tree.JCTree.*; |
| |
| import static com.sun.tools.javac.code.Flags.*; |
| import static com.sun.tools.javac.code.Kinds.*; |
| import static com.sun.tools.javac.code.TypeTag.*; |
| |
| /** Factory class for trees. |
| * |
| * <p><b>This is NOT part of any supported API. |
| * If you write code that depends on this, you do so at your own risk. |
| * This code and its internal interfaces are subject to change or |
| * deletion without notice.</b> |
| */ |
| public class TreeMaker implements JCTree.Factory { |
| |
| /** The context key for the tree factory. */ |
| protected static final Context.Key<TreeMaker> treeMakerKey = |
| new Context.Key<TreeMaker>(); |
| |
| /** Get the TreeMaker instance. */ |
| public static TreeMaker instance(Context context) { |
| TreeMaker instance = context.get(treeMakerKey); |
| if (instance == null) |
| instance = new TreeMaker(context); |
| return instance; |
| } |
| |
| /** The position at which subsequent trees will be created. |
| */ |
| public int pos = Position.NOPOS; |
| |
| /** The toplevel tree to which created trees belong. |
| */ |
| public JCCompilationUnit toplevel; |
| |
| /** The current name table. */ |
| Names names; |
| |
| Types types; |
| |
| /** The current symbol table. */ |
| Symtab syms; |
| |
| /** Create a tree maker with null toplevel and NOPOS as initial position. |
| */ |
| protected TreeMaker(Context context) { |
| context.put(treeMakerKey, this); |
| this.pos = Position.NOPOS; |
| this.toplevel = null; |
| this.names = Names.instance(context); |
| this.syms = Symtab.instance(context); |
| this.types = Types.instance(context); |
| } |
| |
| /** Create a tree maker with a given toplevel and FIRSTPOS as initial position. |
| */ |
| protected TreeMaker(JCCompilationUnit toplevel, Names names, Types types, Symtab syms) { |
| this.pos = Position.FIRSTPOS; |
| this.toplevel = toplevel; |
| this.names = names; |
| this.types = types; |
| this.syms = syms; |
| } |
| |
| /** Create a new tree maker for a given toplevel. |
| */ |
| public TreeMaker forToplevel(JCCompilationUnit toplevel) { |
| return new TreeMaker(toplevel, names, types, syms); |
| } |
| |
| /** Reassign current position. |
| */ |
| public TreeMaker at(int pos) { |
| this.pos = pos; |
| return this; |
| } |
| |
| /** Reassign current position. |
| */ |
| public TreeMaker at(DiagnosticPosition pos) { |
| this.pos = (pos == null ? Position.NOPOS : pos.getStartPosition()); |
| return this; |
| } |
| |
| /** |
| * Create given tree node at current position. |
| * @param defs a list of ClassDef, Import, and Skip |
| */ |
| public JCCompilationUnit TopLevel(List<JCAnnotation> packageAnnotations, |
| JCExpression pid, |
| List<JCTree> defs) { |
| Assert.checkNonNull(packageAnnotations); |
| for (JCTree node : defs) |
| Assert.check(node instanceof JCClassDecl |
| || node instanceof JCImport |
| || node instanceof JCSkip |
| || node instanceof JCErroneous |
| || (node instanceof JCExpressionStatement |
| && ((JCExpressionStatement)node).expr instanceof JCErroneous), |
| node.getClass().getSimpleName()); |
| JCCompilationUnit tree = new JCCompilationUnit(packageAnnotations, pid, defs, |
| null, null, null, null); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCImport Import(JCTree qualid, boolean importStatic) { |
| JCImport tree = new JCImport(qualid, importStatic); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCClassDecl ClassDef(JCModifiers mods, |
| Name name, |
| List<JCTypeParameter> typarams, |
| JCExpression extending, |
| List<JCExpression> implementing, |
| List<JCTree> defs) |
| { |
| JCClassDecl tree = new JCClassDecl(mods, |
| name, |
| typarams, |
| extending, |
| implementing, |
| defs, |
| null); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCMethodDecl MethodDef(JCModifiers mods, |
| Name name, |
| JCExpression restype, |
| List<JCTypeParameter> typarams, |
| List<JCVariableDecl> params, |
| List<JCExpression> thrown, |
| JCBlock body, |
| JCExpression defaultValue) { |
| return MethodDef( |
| mods, name, restype, typarams, null, params, |
| thrown, body, defaultValue); |
| } |
| |
| public JCMethodDecl MethodDef(JCModifiers mods, |
| Name name, |
| JCExpression restype, |
| List<JCTypeParameter> typarams, |
| JCVariableDecl recvparam, |
| List<JCVariableDecl> params, |
| List<JCExpression> thrown, |
| JCBlock body, |
| JCExpression defaultValue) |
| { |
| JCMethodDecl tree = new JCMethodDecl(mods, |
| name, |
| restype, |
| typarams, |
| recvparam, |
| params, |
| thrown, |
| body, |
| defaultValue, |
| null); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCVariableDecl VarDef(JCModifiers mods, Name name, JCExpression vartype, JCExpression init) { |
| JCVariableDecl tree = new JCVariableDecl(mods, name, vartype, init, null); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCVariableDecl ReceiverVarDef(JCModifiers mods, JCExpression name, JCExpression vartype) { |
| JCVariableDecl tree = new JCVariableDecl(mods, name, vartype); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCSkip Skip() { |
| JCSkip tree = new JCSkip(); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCBlock Block(long flags, List<JCStatement> stats) { |
| JCBlock tree = new JCBlock(flags, stats); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCDoWhileLoop DoLoop(JCStatement body, JCExpression cond) { |
| JCDoWhileLoop tree = new JCDoWhileLoop(body, cond); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCWhileLoop WhileLoop(JCExpression cond, JCStatement body) { |
| JCWhileLoop tree = new JCWhileLoop(cond, body); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCForLoop ForLoop(List<JCStatement> init, |
| JCExpression cond, |
| List<JCExpressionStatement> step, |
| JCStatement body) |
| { |
| JCForLoop tree = new JCForLoop(init, cond, step, body); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCEnhancedForLoop ForeachLoop(JCVariableDecl var, JCExpression expr, JCStatement body) { |
| JCEnhancedForLoop tree = new JCEnhancedForLoop(var, expr, body); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCLabeledStatement Labelled(Name label, JCStatement body) { |
| JCLabeledStatement tree = new JCLabeledStatement(label, body); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCSwitch Switch(JCExpression selector, List<JCCase> cases) { |
| JCSwitch tree = new JCSwitch(selector, cases); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCCase Case(JCExpression pat, List<JCStatement> stats) { |
| JCCase tree = new JCCase(pat, stats); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCSynchronized Synchronized(JCExpression lock, JCBlock body) { |
| JCSynchronized tree = new JCSynchronized(lock, body); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCTry Try(JCBlock body, List<JCCatch> catchers, JCBlock finalizer) { |
| return Try(List.<JCTree>nil(), body, catchers, finalizer); |
| } |
| |
| public JCTry Try(List<JCTree> resources, |
| JCBlock body, |
| List<JCCatch> catchers, |
| JCBlock finalizer) { |
| JCTry tree = new JCTry(resources, body, catchers, finalizer); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCCatch Catch(JCVariableDecl param, JCBlock body) { |
| JCCatch tree = new JCCatch(param, body); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCConditional Conditional(JCExpression cond, |
| JCExpression thenpart, |
| JCExpression elsepart) |
| { |
| JCConditional tree = new JCConditional(cond, thenpart, elsepart); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCIf If(JCExpression cond, JCStatement thenpart, JCStatement elsepart) { |
| JCIf tree = new JCIf(cond, thenpart, elsepart); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCExpressionStatement Exec(JCExpression expr) { |
| JCExpressionStatement tree = new JCExpressionStatement(expr); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCBreak Break(Name label) { |
| JCBreak tree = new JCBreak(label, null); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCContinue Continue(Name label) { |
| JCContinue tree = new JCContinue(label, null); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCReturn Return(JCExpression expr) { |
| JCReturn tree = new JCReturn(expr); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCThrow Throw(JCExpression expr) { |
| JCThrow tree = new JCThrow(expr); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCAssert Assert(JCExpression cond, JCExpression detail) { |
| JCAssert tree = new JCAssert(cond, detail); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCMethodInvocation Apply(List<JCExpression> typeargs, |
| JCExpression fn, |
| List<JCExpression> args) |
| { |
| JCMethodInvocation tree = new JCMethodInvocation(typeargs, fn, args); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCNewClass NewClass(JCExpression encl, |
| List<JCExpression> typeargs, |
| JCExpression clazz, |
| List<JCExpression> args, |
| JCClassDecl def) |
| { |
| JCNewClass tree = new JCNewClass(encl, typeargs, clazz, args, def); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCNewArray NewArray(JCExpression elemtype, |
| List<JCExpression> dims, |
| List<JCExpression> elems) |
| { |
| JCNewArray tree = new JCNewArray(elemtype, dims, elems); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCLambda Lambda(List<JCVariableDecl> params, |
| JCTree body) |
| { |
| JCLambda tree = new JCLambda(params, body); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCParens Parens(JCExpression expr) { |
| JCParens tree = new JCParens(expr); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCAssign Assign(JCExpression lhs, JCExpression rhs) { |
| JCAssign tree = new JCAssign(lhs, rhs); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCAssignOp Assignop(JCTree.Tag opcode, JCTree lhs, JCTree rhs) { |
| JCAssignOp tree = new JCAssignOp(opcode, lhs, rhs, null); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCUnary Unary(JCTree.Tag opcode, JCExpression arg) { |
| JCUnary tree = new JCUnary(opcode, arg); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCBinary Binary(JCTree.Tag opcode, JCExpression lhs, JCExpression rhs) { |
| JCBinary tree = new JCBinary(opcode, lhs, rhs, null); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCTypeCast TypeCast(JCTree clazz, JCExpression expr) { |
| JCTypeCast tree = new JCTypeCast(clazz, expr); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCInstanceOf TypeTest(JCExpression expr, JCTree clazz) { |
| JCInstanceOf tree = new JCInstanceOf(expr, clazz); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCArrayAccess Indexed(JCExpression indexed, JCExpression index) { |
| JCArrayAccess tree = new JCArrayAccess(indexed, index); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCFieldAccess Select(JCExpression selected, Name selector) { |
| JCFieldAccess tree = new JCFieldAccess(selected, selector, null); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCMemberReference Reference(JCMemberReference.ReferenceMode mode, Name name, |
| JCExpression expr, List<JCExpression> typeargs) { |
| JCMemberReference tree = new JCMemberReference(mode, name, expr, typeargs); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCIdent Ident(Name name) { |
| JCIdent tree = new JCIdent(name, null); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCLiteral Literal(TypeTag tag, Object value) { |
| JCLiteral tree = new JCLiteral(tag, value); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCPrimitiveTypeTree TypeIdent(TypeTag typetag) { |
| JCPrimitiveTypeTree tree = new JCPrimitiveTypeTree(typetag); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCArrayTypeTree TypeArray(JCExpression elemtype) { |
| JCArrayTypeTree tree = new JCArrayTypeTree(elemtype); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCTypeApply TypeApply(JCExpression clazz, List<JCExpression> arguments) { |
| JCTypeApply tree = new JCTypeApply(clazz, arguments); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCTypeUnion TypeUnion(List<JCExpression> components) { |
| JCTypeUnion tree = new JCTypeUnion(components); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCTypeIntersection TypeIntersection(List<JCExpression> components) { |
| JCTypeIntersection tree = new JCTypeIntersection(components); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCTypeParameter TypeParameter(Name name, List<JCExpression> bounds) { |
| return TypeParameter(name, bounds, List.<JCAnnotation>nil()); |
| } |
| |
| public JCTypeParameter TypeParameter(Name name, List<JCExpression> bounds, List<JCAnnotation> annos) { |
| JCTypeParameter tree = new JCTypeParameter(name, bounds, annos); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCWildcard Wildcard(TypeBoundKind kind, JCTree type) { |
| JCWildcard tree = new JCWildcard(kind, type); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public TypeBoundKind TypeBoundKind(BoundKind kind) { |
| TypeBoundKind tree = new TypeBoundKind(kind); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCAnnotation Annotation(JCTree annotationType, List<JCExpression> args) { |
| JCAnnotation tree = new JCAnnotation(Tag.ANNOTATION, annotationType, args); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCAnnotation TypeAnnotation(JCTree annotationType, List<JCExpression> args) { |
| JCAnnotation tree = new JCAnnotation(Tag.TYPE_ANNOTATION, annotationType, args); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCModifiers Modifiers(long flags, List<JCAnnotation> annotations) { |
| JCModifiers tree = new JCModifiers(flags, annotations); |
| boolean noFlags = (flags & (Flags.ModifierFlags | Flags.ANNOTATION)) == 0; |
| tree.pos = (noFlags && annotations.isEmpty()) ? Position.NOPOS : pos; |
| return tree; |
| } |
| |
| public JCModifiers Modifiers(long flags) { |
| return Modifiers(flags, List.<JCAnnotation>nil()); |
| } |
| |
| public JCAnnotatedType AnnotatedType(List<JCAnnotation> annotations, JCExpression underlyingType) { |
| JCAnnotatedType tree = new JCAnnotatedType(annotations, underlyingType); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public JCErroneous Erroneous() { |
| return Erroneous(List.<JCTree>nil()); |
| } |
| |
| public JCErroneous Erroneous(List<? extends JCTree> errs) { |
| JCErroneous tree = new JCErroneous(errs); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| public LetExpr LetExpr(List<JCVariableDecl> defs, JCTree expr) { |
| LetExpr tree = new LetExpr(defs, expr); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| /* *************************************************************************** |
| * Derived building blocks. |
| ****************************************************************************/ |
| |
| public JCClassDecl AnonymousClassDef(JCModifiers mods, |
| List<JCTree> defs) |
| { |
| return ClassDef(mods, |
| names.empty, |
| List.<JCTypeParameter>nil(), |
| null, |
| List.<JCExpression>nil(), |
| defs); |
| } |
| |
| public LetExpr LetExpr(JCVariableDecl def, JCTree expr) { |
| LetExpr tree = new LetExpr(List.of(def), expr); |
| tree.pos = pos; |
| return tree; |
| } |
| |
| /** Create an identifier from a symbol. |
| */ |
| public JCIdent Ident(Symbol sym) { |
| return (JCIdent)new JCIdent((sym.name != names.empty) |
| ? sym.name |
| : sym.flatName(), sym) |
| .setPos(pos) |
| .setType(sym.type); |
| } |
| |
| /** Create a selection node from a qualifier tree and a symbol. |
| * @param base The qualifier tree. |
| */ |
| public JCExpression Select(JCExpression base, Symbol sym) { |
| return new JCFieldAccess(base, sym.name, sym).setPos(pos).setType(sym.type); |
| } |
| |
| /** Create a qualified identifier from a symbol, adding enough qualifications |
| * to make the reference unique. |
| */ |
| public JCExpression QualIdent(Symbol sym) { |
| return isUnqualifiable(sym) |
| ? Ident(sym) |
| : Select(QualIdent(sym.owner), sym); |
| } |
| |
| /** Create an identifier that refers to the variable declared in given variable |
| * declaration. |
| */ |
| public JCExpression Ident(JCVariableDecl param) { |
| return Ident(param.sym); |
| } |
| |
| /** Create a list of identifiers referring to the variables declared |
| * in given list of variable declarations. |
| */ |
| public List<JCExpression> Idents(List<JCVariableDecl> params) { |
| ListBuffer<JCExpression> ids = new ListBuffer<JCExpression>(); |
| for (List<JCVariableDecl> l = params; l.nonEmpty(); l = l.tail) |
| ids.append(Ident(l.head)); |
| return ids.toList(); |
| } |
| |
| /** Create a tree representing `this', given its type. |
| */ |
| public JCExpression This(Type t) { |
| return Ident(new VarSymbol(FINAL, names._this, t, t.tsym)); |
| } |
| |
| /** Create a tree representing a class literal. |
| */ |
| public JCExpression ClassLiteral(ClassSymbol clazz) { |
| return ClassLiteral(clazz.type); |
| } |
| |
| /** Create a tree representing a class literal. |
| */ |
| public JCExpression ClassLiteral(Type t) { |
| VarSymbol lit = new VarSymbol(STATIC | PUBLIC | FINAL, |
| names._class, |
| t, |
| t.tsym); |
| return Select(Type(t), lit); |
| } |
| |
| /** Create a tree representing `super', given its type and owner. |
| */ |
| public JCIdent Super(Type t, TypeSymbol owner) { |
| return Ident(new VarSymbol(FINAL, names._super, t, owner)); |
| } |
| |
| /** |
| * Create a method invocation from a method tree and a list of |
| * argument trees. |
| */ |
| public JCMethodInvocation App(JCExpression meth, List<JCExpression> args) { |
| return Apply(null, meth, args).setType(meth.type.getReturnType()); |
| } |
| |
| /** |
| * Create a no-arg method invocation from a method tree |
| */ |
| public JCMethodInvocation App(JCExpression meth) { |
| return Apply(null, meth, List.<JCExpression>nil()).setType(meth.type.getReturnType()); |
| } |
| |
| /** Create a method invocation from a method tree and a list of argument trees. |
| */ |
| public JCExpression Create(Symbol ctor, List<JCExpression> args) { |
| Type t = ctor.owner.erasure(types); |
| JCNewClass newclass = NewClass(null, null, Type(t), args, null); |
| newclass.constructor = ctor; |
| newclass.setType(t); |
| return newclass; |
| } |
| |
| /** Create a tree representing given type. |
| */ |
| public JCExpression Type(Type t) { |
| if (t == null) return null; |
| JCExpression tp; |
| switch (t.getTag()) { |
| case BYTE: case CHAR: case SHORT: case INT: case LONG: case FLOAT: |
| case DOUBLE: case BOOLEAN: case VOID: |
| tp = TypeIdent(t.getTag()); |
| break; |
| case TYPEVAR: |
| tp = Ident(t.tsym); |
| break; |
| case WILDCARD: { |
| WildcardType a = ((WildcardType) t); |
| tp = Wildcard(TypeBoundKind(a.kind), Type(a.type)); |
| break; |
| } |
| case CLASS: |
| Type outer = t.getEnclosingType(); |
| JCExpression clazz = outer.hasTag(CLASS) && t.tsym.owner.kind == TYP |
| ? Select(Type(outer), t.tsym) |
| : QualIdent(t.tsym); |
| tp = t.getTypeArguments().isEmpty() |
| ? clazz |
| : TypeApply(clazz, Types(t.getTypeArguments())); |
| break; |
| case ARRAY: |
| tp = TypeArray(Type(types.elemtype(t))); |
| break; |
| case ERROR: |
| tp = TypeIdent(ERROR); |
| break; |
| default: |
| throw new AssertionError("unexpected type: " + t); |
| } |
| return tp.setType(t); |
| } |
| |
| /** Create a list of trees representing given list of types. |
| */ |
| public List<JCExpression> Types(List<Type> ts) { |
| ListBuffer<JCExpression> lb = new ListBuffer<JCExpression>(); |
| for (List<Type> l = ts; l.nonEmpty(); l = l.tail) |
| lb.append(Type(l.head)); |
| return lb.toList(); |
| } |
| |
| /** Create a variable definition from a variable symbol and an initializer |
| * expression. |
| */ |
| public JCVariableDecl VarDef(VarSymbol v, JCExpression init) { |
| return (JCVariableDecl) |
| new JCVariableDecl( |
| Modifiers(v.flags(), Annotations(v.getRawAttributes())), |
| v.name, |
| Type(v.type), |
| init, |
| v).setPos(pos).setType(v.type); |
| } |
| |
| /** Create annotation trees from annotations. |
| */ |
| public List<JCAnnotation> Annotations(List<Attribute.Compound> attributes) { |
| if (attributes == null) return List.nil(); |
| ListBuffer<JCAnnotation> result = new ListBuffer<JCAnnotation>(); |
| for (List<Attribute.Compound> i = attributes; i.nonEmpty(); i=i.tail) { |
| Attribute a = i.head; |
| result.append(Annotation(a)); |
| } |
| return result.toList(); |
| } |
| |
| public JCLiteral Literal(Object value) { |
| JCLiteral result = null; |
| if (value instanceof String) { |
| result = Literal(CLASS, value). |
| setType(syms.stringType.constType(value)); |
| } else if (value instanceof Integer) { |
| result = Literal(INT, value). |
| setType(syms.intType.constType(value)); |
| } else if (value instanceof Long) { |
| result = Literal(LONG, value). |
| setType(syms.longType.constType(value)); |
| } else if (value instanceof Byte) { |
| result = Literal(BYTE, value). |
| setType(syms.byteType.constType(value)); |
| } else if (value instanceof Character) { |
| int v = (int) (((Character) value).toString().charAt(0)); |
| result = Literal(CHAR, value). |
| setType(syms.charType.constType(v)); |
| } else if (value instanceof Double) { |
| result = Literal(DOUBLE, value). |
| setType(syms.doubleType.constType(value)); |
| } else if (value instanceof Float) { |
| result = Literal(FLOAT, value). |
| setType(syms.floatType.constType(value)); |
| } else if (value instanceof Short) { |
| result = Literal(SHORT, value). |
| setType(syms.shortType.constType(value)); |
| } else if (value instanceof Boolean) { |
| int v = ((Boolean) value) ? 1 : 0; |
| result = Literal(BOOLEAN, v). |
| setType(syms.booleanType.constType(v)); |
| } else { |
| throw new AssertionError(value); |
| } |
| return result; |
| } |
| |
| class AnnotationBuilder implements Attribute.Visitor { |
| JCExpression result = null; |
| public void visitConstant(Attribute.Constant v) { |
| result = Literal(v.type.getTag(), v.value); |
| } |
| public void visitClass(Attribute.Class clazz) { |
| result = ClassLiteral(clazz.classType).setType(syms.classType); |
| } |
| public void visitEnum(Attribute.Enum e) { |
| result = QualIdent(e.value); |
| } |
| public void visitError(Attribute.Error e) { |
| result = Erroneous(); |
| } |
| public void visitCompound(Attribute.Compound compound) { |
| if (compound instanceof Attribute.TypeCompound) { |
| result = visitTypeCompoundInternal((Attribute.TypeCompound) compound); |
| } else { |
| result = visitCompoundInternal(compound); |
| } |
| } |
| public JCAnnotation visitCompoundInternal(Attribute.Compound compound) { |
| ListBuffer<JCExpression> args = new ListBuffer<JCExpression>(); |
| for (List<Pair<Symbol.MethodSymbol,Attribute>> values = compound.values; values.nonEmpty(); values=values.tail) { |
| Pair<MethodSymbol,Attribute> pair = values.head; |
| JCExpression valueTree = translate(pair.snd); |
| args.append(Assign(Ident(pair.fst), valueTree).setType(valueTree.type)); |
| } |
| return Annotation(Type(compound.type), args.toList()); |
| } |
| public JCAnnotation visitTypeCompoundInternal(Attribute.TypeCompound compound) { |
| ListBuffer<JCExpression> args = new ListBuffer<JCExpression>(); |
| for (List<Pair<Symbol.MethodSymbol,Attribute>> values = compound.values; values.nonEmpty(); values=values.tail) { |
| Pair<MethodSymbol,Attribute> pair = values.head; |
| JCExpression valueTree = translate(pair.snd); |
| args.append(Assign(Ident(pair.fst), valueTree).setType(valueTree.type)); |
| } |
| return TypeAnnotation(Type(compound.type), args.toList()); |
| } |
| public void visitArray(Attribute.Array array) { |
| ListBuffer<JCExpression> elems = new ListBuffer<JCExpression>(); |
| for (int i = 0; i < array.values.length; i++) |
| elems.append(translate(array.values[i])); |
| result = NewArray(null, List.<JCExpression>nil(), elems.toList()).setType(array.type); |
| } |
| JCExpression translate(Attribute a) { |
| a.accept(this); |
| return result; |
| } |
| JCAnnotation translate(Attribute.Compound a) { |
| return visitCompoundInternal(a); |
| } |
| JCAnnotation translate(Attribute.TypeCompound a) { |
| return visitTypeCompoundInternal(a); |
| } |
| } |
| |
| AnnotationBuilder annotationBuilder = new AnnotationBuilder(); |
| |
| /** Create an annotation tree from an attribute. |
| */ |
| public JCAnnotation Annotation(Attribute a) { |
| return annotationBuilder.translate((Attribute.Compound)a); |
| } |
| |
| public JCAnnotation TypeAnnotation(Attribute a) { |
| return annotationBuilder.translate((Attribute.TypeCompound) a); |
| } |
| |
| /** Create a method definition from a method symbol and a method body. |
| */ |
| public JCMethodDecl MethodDef(MethodSymbol m, JCBlock body) { |
| return MethodDef(m, m.type, body); |
| } |
| |
| /** Create a method definition from a method symbol, method type |
| * and a method body. |
| */ |
| public JCMethodDecl MethodDef(MethodSymbol m, Type mtype, JCBlock body) { |
| return (JCMethodDecl) |
| new JCMethodDecl( |
| Modifiers(m.flags(), Annotations(m.getRawAttributes())), |
| m.name, |
| Type(mtype.getReturnType()), |
| TypeParams(mtype.getTypeArguments()), |
| null, // receiver type |
| Params(mtype.getParameterTypes(), m), |
| Types(mtype.getThrownTypes()), |
| body, |
| null, |
| m).setPos(pos).setType(mtype); |
| } |
| |
| /** Create a type parameter tree from its name and type. |
| */ |
| public JCTypeParameter TypeParam(Name name, TypeVar tvar) { |
| return (JCTypeParameter) |
| TypeParameter(name, Types(types.getBounds(tvar))).setPos(pos).setType(tvar); |
| } |
| |
| /** Create a list of type parameter trees from a list of type variables. |
| */ |
| public List<JCTypeParameter> TypeParams(List<Type> typarams) { |
| ListBuffer<JCTypeParameter> tparams = new ListBuffer<JCTypeParameter>(); |
| for (List<Type> l = typarams; l.nonEmpty(); l = l.tail) |
| tparams.append(TypeParam(l.head.tsym.name, (TypeVar)l.head)); |
| return tparams.toList(); |
| } |
| |
| /** Create a value parameter tree from its name, type, and owner. |
| */ |
| public JCVariableDecl Param(Name name, Type argtype, Symbol owner) { |
| return VarDef(new VarSymbol(PARAMETER, name, argtype, owner), null); |
| } |
| |
| /** Create a a list of value parameter trees x0, ..., xn from a list of |
| * their types and an their owner. |
| */ |
| public List<JCVariableDecl> Params(List<Type> argtypes, Symbol owner) { |
| ListBuffer<JCVariableDecl> params = new ListBuffer<JCVariableDecl>(); |
| MethodSymbol mth = (owner.kind == MTH) ? ((MethodSymbol)owner) : null; |
| if (mth != null && mth.params != null && argtypes.length() == mth.params.length()) { |
| for (VarSymbol param : ((MethodSymbol)owner).params) |
| params.append(VarDef(param, null)); |
| } else { |
| int i = 0; |
| for (List<Type> l = argtypes; l.nonEmpty(); l = l.tail) |
| params.append(Param(paramName(i++), l.head, owner)); |
| } |
| return params.toList(); |
| } |
| |
| /** Wrap a method invocation in an expression statement or return statement, |
| * depending on whether the method invocation expression's type is void. |
| */ |
| public JCStatement Call(JCExpression apply) { |
| return apply.type.hasTag(VOID) ? Exec(apply) : Return(apply); |
| } |
| |
| /** Construct an assignment from a variable symbol and a right hand side. |
| */ |
| public JCStatement Assignment(Symbol v, JCExpression rhs) { |
| return Exec(Assign(Ident(v), rhs).setType(v.type)); |
| } |
| |
| /** Construct an index expression from a variable and an expression. |
| */ |
| public JCArrayAccess Indexed(Symbol v, JCExpression index) { |
| JCArrayAccess tree = new JCArrayAccess(QualIdent(v), index); |
| tree.type = ((ArrayType)v.type).elemtype; |
| return tree; |
| } |
| |
| /** Make an attributed type cast expression. |
| */ |
| public JCTypeCast TypeCast(Type type, JCExpression expr) { |
| return (JCTypeCast)TypeCast(Type(type), expr).setType(type); |
| } |
| |
| /* *************************************************************************** |
| * Helper methods. |
| ****************************************************************************/ |
| |
| /** Can given symbol be referred to in unqualified form? |
| */ |
| boolean isUnqualifiable(Symbol sym) { |
| if (sym.name == names.empty || |
| sym.owner == null || |
| sym.owner == syms.rootPackage || |
| sym.owner.kind == MTH || sym.owner.kind == VAR) { |
| return true; |
| } else if (sym.kind == TYP && toplevel != null) { |
| Scope.Entry e; |
| e = toplevel.namedImportScope.lookup(sym.name); |
| if (e.scope != null) { |
| return |
| e.sym == sym && |
| e.next().scope == null; |
| } |
| e = toplevel.packge.members().lookup(sym.name); |
| if (e.scope != null) { |
| return |
| e.sym == sym && |
| e.next().scope == null; |
| } |
| e = toplevel.starImportScope.lookup(sym.name); |
| if (e.scope != null) { |
| return |
| e.sym == sym && |
| e.next().scope == null; |
| } |
| } |
| return false; |
| } |
| |
| /** The name of synthetic parameter number `i'. |
| */ |
| public Name paramName(int i) { return names.fromString("x" + i); } |
| |
| /** The name of synthetic type parameter number `i'. |
| */ |
| public Name typaramName(int i) { return names.fromString("A" + i); } |
| } |
