jdk8-mips64-public/langtools: src/share/classes/com/sun/tools/javac/tree/TreeMaker.java@859dc787b52b (annotated)

src/share/classes/com/sun/tools/javac/tree/TreeMaker.java@859dc787b52b (annotated)

src/share/classes/com/sun/tools/javac/tree/TreeMaker.java

Thu, 24 May 2018 16:48:51 +0800

author: aoqi
date: Thu, 24 May 2018 16:48:51 +0800
changeset 3295: 859dc787b52b
parent 3172: 921a7d6ab90d
parent 2525: 2eb010b6cb22
permissions: -rw-r--r--

Merge

 /*
  * 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 qualified `this' given its type
      */
     public JCExpression QualThis(Type t) {
         return Select(Type(t), 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); }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

src/share/classes/com/sun/tools/javac/tree/TreeMaker.java@859dc787b52b (annotated)

src/share/classes/com/sun/tools/javac/tree/TreeMaker.java