| /* |
| * Copyright (c) 1994, 2004, 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 sun.tools.javac; |
| |
| import sun.tools.java.*; |
| import sun.tools.tree.*; |
| import sun.tools.asm.*; |
| import java.util.Vector; |
| import java.util.Enumeration; |
| import java.util.Hashtable; |
| import java.io.PrintStream; |
| |
| /** |
| * A Source Member |
| * |
| * WARNING: The contents of this source file are not part of any |
| * supported API. Code that depends on them does so at its own risk: |
| * they are subject to change or removal without notice. |
| */ |
| @Deprecated |
| public |
| class SourceMember extends MemberDefinition implements Constants { |
| /** |
| * The argument names (if it is a method) |
| */ |
| Vector args; |
| |
| // set to the MemberDefinition in the interface if we have this field because |
| // it has been forced on us |
| MemberDefinition abstractSource; |
| |
| /** |
| * The status of the field |
| */ |
| int status; |
| |
| static final int PARSED = 0; |
| static final int CHECKING = 1; |
| static final int CHECKED = 2; |
| static final int INLINING = 3; |
| static final int INLINED = 4; |
| static final int ERROR = 5; |
| |
| public Vector getArguments() { |
| return args; |
| } |
| |
| /** |
| * Constructor |
| * @param argNames a vector of IdentifierToken |
| */ |
| public SourceMember(long where, ClassDefinition clazz, |
| String doc, int modifiers, Type type, |
| Identifier name, Vector argNames, |
| IdentifierToken exp[], Node value) { |
| super(where, clazz, modifiers, type, name, exp, value); |
| this.documentation = doc; |
| this.args = argNames; // for the moment |
| // not until type names are resolved: createArgumentFields(argNames); |
| |
| if (ClassDefinition.containsDeprecated(documentation)) { |
| this.modifiers |= M_DEPRECATED; |
| } |
| } |
| |
| void createArgumentFields(Vector argNames) { |
| // Create a list of arguments |
| if (isMethod()) { |
| args = new Vector(); |
| |
| if (isConstructor() || !(isStatic() || isInitializer())) { |
| args.addElement(((SourceClass)clazz).getThisArgument()); |
| } |
| |
| if (argNames != null) { |
| Enumeration e = argNames.elements(); |
| Type argTypes[] = getType().getArgumentTypes(); |
| for (int i = 0 ; i < argTypes.length ; i++) { |
| Object x = e.nextElement(); |
| if (x instanceof LocalMember) { |
| // This should not happen, but it does |
| // in cases of vicious cyclic inheritance. |
| args = argNames; |
| return; |
| } |
| Identifier id; |
| int mod; |
| long where; |
| if (x instanceof Identifier) { |
| // allow argNames to be simple Identifiers (deprecated!) |
| id = (Identifier)x; |
| mod = 0; |
| where = getWhere(); |
| } else { |
| IdentifierToken token = (IdentifierToken)x; |
| id = token.getName(); |
| mod = token.getModifiers(); |
| where = token.getWhere(); |
| } |
| args.addElement(new LocalMember(where, clazz, mod, |
| argTypes[i], id)); |
| } |
| } |
| } |
| } |
| |
| // The methods addOuterThis() and addUplevelArguments() were |
| // both originally part of a single method called addUplevelArguments() |
| // which took a single boolean parameter describing which of the |
| // two behaviors it wanted. |
| // |
| // The original addUplevelArguments() claimed to keep the arguments in |
| // the following order: |
| // |
| // (1) <this> <early outer this> <uplevel arguments...> <true arguments...> |
| // |
| // (By <early outer this> I am referring to the clientOuterField added |
| // to some constructors when they are created. If an outer this is |
| // added later, on demand, then this is mixed in with the rest of the |
| // uplevel arguments and is added by addUplevelArguments.) |
| // |
| // In reality, the `args' Vector was generated in this order, but the |
| // Type array `argTypes' was generated as: |
| // |
| // (2) <this> <uplevel arguments...> <early outer this> <true arguments...> |
| // |
| // This didn't make a difference in the common case -- that is, when |
| // a class had an <outer.this> or <uplevel arguments...> but not both. |
| // Both can happen in the case that a member class is declared inside |
| // of a local class. It seems that the calling sequences, generated |
| // in places like NewInstanceExpression.codeCommon(), use order (2), |
| // so I have changed the code below to stick with that order. Since |
| // the only time this happens is in classes which are insideLocal, no |
| // one should be able to tell the difference between these orders. |
| // (bug number 4085633) |
| |
| LocalMember outerThisArg = null; |
| |
| /** |
| * Get outer instance link, or null if none. |
| */ |
| |
| public LocalMember getOuterThisArg() { |
| return outerThisArg; |
| } |
| |
| /** |
| * Add the outer.this argument to the list of arguments for this |
| * constructor. This is called from resolveTypeStructure. Any |
| * additional uplevel arguments get added later by addUplevelArguments(). |
| */ |
| |
| void addOuterThis() { |
| UplevelReference refs = clazz.getReferences(); |
| |
| // See if we have a client outer field. |
| while (refs != null && |
| !refs.isClientOuterField()) { |
| refs = refs.getNext(); |
| } |
| |
| // There is no outer this argument. Quit. |
| if (refs == null) { |
| return; |
| } |
| |
| // Get the old arg types. |
| Type oldArgTypes[] = type.getArgumentTypes(); |
| |
| // And make an array for the new ones with space for one more. |
| Type argTypes[] = new Type[oldArgTypes.length + 1]; |
| |
| LocalMember arg = refs.getLocalArgument(); |
| outerThisArg = arg; |
| |
| // args is our list of arguments. It contains a `this', so |
| // we insert at position 1. The list of types does not have a |
| // this, so we insert at position 0. |
| args.insertElementAt(arg, 1); |
| argTypes[0] = arg.getType(); |
| |
| // Add on the rest of the constructor arguments. |
| for (int i = 0; i < oldArgTypes.length; i++) { |
| argTypes[i + 1] = oldArgTypes[i]; |
| } |
| |
| type = Type.tMethod(type.getReturnType(), argTypes); |
| } |
| |
| /** |
| * Prepend argument names and argument types for local variable references. |
| * This information is never seen by the type-check phase, |
| * but it affects code generation, which is the earliest moment |
| * we have comprehensive information on uplevel references. |
| * The code() methods tweaks the constructor calls, prepending |
| * the proper values to the argument list. |
| */ |
| void addUplevelArguments() { |
| UplevelReference refs = clazz.getReferences(); |
| clazz.getReferencesFrozen(); |
| |
| // Count how many uplevels we have to add. |
| int count = 0; |
| for (UplevelReference r = refs; r != null; r = r.getNext()) { |
| if (!r.isClientOuterField()) { |
| count += 1; |
| } |
| } |
| |
| if (count == 0) { |
| // None to add, quit. |
| return; |
| } |
| |
| // Get the old argument types. |
| Type oldArgTypes[] = type.getArgumentTypes(); |
| |
| // Make an array with enough room for the new. |
| Type argTypes[] = new Type[oldArgTypes.length + count]; |
| |
| // Add all of the late uplevel references to args and argTypes. |
| // Note that they are `off-by-one' because of the `this'. |
| int ins = 0; |
| for (UplevelReference r = refs; r != null; r = r.getNext()) { |
| if (!r.isClientOuterField()) { |
| LocalMember arg = r.getLocalArgument(); |
| |
| args.insertElementAt(arg, 1 + ins); |
| argTypes[ins] = arg.getType(); |
| |
| ins++; |
| } |
| } |
| |
| // Add the rest of the old arguments. |
| for (int i = 0; i < oldArgTypes.length; i++) { |
| argTypes[ins + i] = oldArgTypes[i]; |
| } |
| |
| type = Type.tMethod(type.getReturnType(), argTypes); |
| } |
| |
| /** |
| * Constructor for an inner class. |
| */ |
| public SourceMember(ClassDefinition innerClass) { |
| super(innerClass); |
| } |
| |
| /** |
| * Constructor. |
| * Used only to generate an abstract copy of a method that a class |
| * inherits from an interface |
| */ |
| public SourceMember(MemberDefinition f, ClassDefinition c, Environment env) { |
| this(f.getWhere(), c, f.getDocumentation(), |
| f.getModifiers() | M_ABSTRACT, f.getType(), f.getName(), null, |
| f.getExceptionIds(), null); |
| this.args = f.getArguments(); |
| this.abstractSource = f; |
| this.exp = f.getExceptions(env); |
| } |
| |
| /** |
| * Get exceptions |
| */ |
| public ClassDeclaration[] getExceptions(Environment env) { |
| if ((!isMethod()) || (exp != null)) { |
| return exp; |
| } |
| if (expIds == null) { |
| // (should not happen) |
| exp = new ClassDeclaration[0]; |
| return exp; |
| } |
| // be sure to get the imports right: |
| env = ((SourceClass)getClassDefinition()).setupEnv(env); |
| exp = new ClassDeclaration[expIds.length]; |
| for (int i = 0; i < exp.length; i++) { |
| Identifier e = expIds[i].getName(); |
| Identifier rexp = getClassDefinition().resolveName(env, e); |
| exp[i] = env.getClassDeclaration(rexp); |
| } |
| return exp; |
| } |
| |
| /** |
| * Set array of name-resolved exceptions directly, e.g., for access methods. |
| */ |
| public void setExceptions(ClassDeclaration[] exp) { |
| this.exp = exp; |
| } |
| |
| /** |
| * Resolve types in a field, after parsing. |
| * @see ClassDefinition.resolveTypeStructure |
| */ |
| |
| public boolean resolved = false; |
| |
| public void resolveTypeStructure(Environment env) { |
| if (tracing) env.dtEnter("SourceMember.resolveTypeStructure: " + this); |
| |
| // A member should only be resolved once. For a constructor, it is imperative |
| // that 'addOuterThis' be called only once, else the outer instance argument may |
| // be inserted into the argument list multiple times. |
| |
| if (resolved) { |
| if (tracing) env.dtEvent("SourceMember.resolveTypeStructure: OK " + this); |
| // This case shouldn't be happening. It is the responsibility |
| // of our callers to avoid attempting multiple resolutions of a member. |
| // *** REMOVE FOR SHIPMENT? *** |
| throw new CompilerError("multiple member type resolution"); |
| //return; |
| } else { |
| if (tracing) env.dtEvent("SourceMember.resolveTypeStructure: RESOLVING " + this); |
| resolved = true; |
| } |
| |
| super.resolveTypeStructure(env); |
| if (isInnerClass()) { |
| ClassDefinition nc = getInnerClass(); |
| if (nc instanceof SourceClass && !nc.isLocal()) { |
| ((SourceClass)nc).resolveTypeStructure(env); |
| } |
| type = innerClass.getType(); |
| } else { |
| // Expand all class names in 'type', including those that are not |
| // fully-qualified or refer to inner classes, into fully-qualified |
| // names. Local and anonymous classes get synthesized names here, |
| // corresponding to the class files that will be generated. This is |
| // currently the only place where 'resolveNames' is used. |
| type = env.resolveNames(getClassDefinition(), type, isSynthetic()); |
| |
| // do the throws also: |
| getExceptions(env); |
| |
| if (isMethod()) { |
| Vector argNames = args; args = null; |
| createArgumentFields(argNames); |
| // Add outer instance argument for constructors. |
| if (isConstructor()) { |
| addOuterThis(); |
| } |
| } |
| } |
| if (tracing) env.dtExit("SourceMember.resolveTypeStructure: " + this); |
| } |
| |
| /** |
| * Get the class declaration in which the field is actually defined |
| */ |
| public ClassDeclaration getDefiningClassDeclaration() { |
| if (abstractSource == null) |
| return super.getDefiningClassDeclaration(); |
| else |
| return abstractSource.getDefiningClassDeclaration(); |
| } |
| |
| /** |
| * A source field never reports deprecation, since the compiler |
| * allows access to deprecated features that are being compiled |
| * in the same job. |
| */ |
| public boolean reportDeprecated(Environment env) { |
| return false; |
| } |
| |
| /** |
| * Check this field. |
| * <p> |
| * This is the method which requests checking. |
| * The real work is done by |
| * <tt>Vset check(Environment, Context, Vset)</tt>. |
| */ |
| public void check(Environment env) throws ClassNotFound { |
| if (tracing) env.dtEnter("SourceMember.check: " + |
| getName() + ", status = " + status); |
| // rely on the class to check all fields in the proper order |
| if (status == PARSED) { |
| if (isSynthetic() && getValue() == null) { |
| // break a big cycle for small synthetic variables |
| status = CHECKED; |
| if (tracing) |
| env.dtExit("SourceMember.check: BREAKING CYCLE"); |
| return; |
| } |
| if (tracing) env.dtEvent("SourceMember.check: CHECKING CLASS"); |
| clazz.check(env); |
| if (status == PARSED) { |
| if (getClassDefinition().getError()) { |
| status = ERROR; |
| } else { |
| if (tracing) |
| env.dtExit("SourceMember.check: CHECK FAILED"); |
| throw new CompilerError("check failed"); |
| } |
| } |
| } |
| if (tracing) env.dtExit("SourceMember.check: DONE " + |
| getName() + ", status = " + status); |
| } |
| |
| /** |
| * Check a field. |
| * @param vset tells which uplevel variables are definitely assigned |
| * The vset is also used to track the initialization of blank finals |
| * by whichever fields which are relevant to them. |
| */ |
| public Vset check(Environment env, Context ctx, Vset vset) throws ClassNotFound { |
| if (tracing) env.dtEvent("SourceMember.check: MEMBER " + |
| getName() + ", status = " + status); |
| if (status == PARSED) { |
| if (isInnerClass()) { |
| // some classes are checked separately |
| ClassDefinition nc = getInnerClass(); |
| if (nc instanceof SourceClass && !nc.isLocal() |
| && nc.isInsideLocal()) { |
| status = CHECKING; |
| vset = ((SourceClass)nc).checkInsideClass(env, ctx, vset); |
| } |
| status = CHECKED; |
| return vset; |
| } |
| if (env.dump()) { |
| System.out.println("[check field " + getClassDeclaration().getName() + "." + getName() + "]"); |
| if (getValue() != null) { |
| getValue().print(System.out); |
| System.out.println(); |
| } |
| } |
| env = new Environment(env, this); |
| |
| // This is where all checking of names appearing within the type |
| // of the member is done. Includes return type and argument types. |
| // Since only one location ('where') for error messages is provided, |
| // localization of errors is poor. Throws clauses are handled below. |
| env.resolve(where, getClassDefinition(), getType()); |
| |
| // Make sure that all the classes that we claim to throw really |
| // are subclasses of Throwable, and are classes that we can reach |
| if (isMethod()) { |
| ClassDeclaration throwable = |
| env.getClassDeclaration(idJavaLangThrowable); |
| ClassDeclaration exp[] = getExceptions(env); |
| for (int i = 0 ; i < exp.length ; i++) { |
| ClassDefinition def; |
| long where = getWhere(); |
| if (expIds != null && i < expIds.length) { |
| where = IdentifierToken.getWhere(expIds[i], where); |
| } |
| try { |
| def = exp[i].getClassDefinition(env); |
| |
| // Validate access for all inner-class components |
| // of a qualified name, not just the last one, which |
| // is checked below. Yes, this is a dirty hack... |
| // Part of fix for 4094658. |
| env.resolveByName(where, getClassDefinition(), def.getName()); |
| |
| } catch (ClassNotFound e) { |
| env.error(where, "class.not.found", e.name, "throws"); |
| break; |
| } |
| def.noteUsedBy(getClassDefinition(), where, env); |
| if (!getClassDefinition(). |
| canAccess(env, def.getClassDeclaration())) { |
| env.error(where, "cant.access.class", def); |
| } else if (!def.subClassOf(env, throwable)) { |
| env.error(where, "throws.not.throwable", def); |
| } |
| } |
| } |
| |
| status = CHECKING; |
| |
| if (isMethod() && args != null) { |
| int length = args.size(); |
| outer_loop: |
| for (int i = 0; i < length; i++) { |
| LocalMember lf = (LocalMember)(args.elementAt(i)); |
| Identifier name_i = lf.getName(); |
| for (int j = i + 1; j < length; j++) { |
| LocalMember lf2 = (LocalMember)(args.elementAt(j)); |
| Identifier name_j = lf2.getName(); |
| if (name_i.equals(name_j)) { |
| env.error(lf2.getWhere(), "duplicate.argument", |
| name_i); |
| break outer_loop; |
| } |
| } |
| } |
| } |
| |
| if (getValue() != null) { |
| ctx = new Context(ctx, this); |
| |
| if (isMethod()) { |
| Statement s = (Statement)getValue(); |
| // initialize vset, indication that each of the arguments |
| // to the function has a value |
| |
| for (Enumeration e = args.elements(); e.hasMoreElements();){ |
| LocalMember f = (LocalMember)e.nextElement(); |
| vset.addVar(ctx.declare(env, f)); |
| } |
| |
| if (isConstructor()) { |
| // Undefine "this" in some constructors, until after |
| // the super constructor has been called. |
| vset.clearVar(ctx.getThisNumber()); |
| |
| // If the first thing in the definition isn't a call |
| // to either super() or this(), then insert one. |
| Expression supCall = s.firstConstructor(); |
| if ((supCall == null) |
| && (getClassDefinition().getSuperClass() != null)) { |
| supCall = getDefaultSuperCall(env); |
| Statement scs = new ExpressionStatement(where, |
| supCall); |
| s = Statement.insertStatement(scs, s); |
| setValue(s); |
| } |
| } |
| |
| //System.out.println("VSET = " + vset); |
| ClassDeclaration exp[] = getExceptions(env); |
| int htsize = (exp.length > 3) ? 17 : 7; |
| Hashtable thrown = new Hashtable(htsize); |
| |
| vset = s.checkMethod(env, ctx, vset, thrown); |
| |
| ClassDeclaration ignore1 = |
| env.getClassDeclaration(idJavaLangError); |
| ClassDeclaration ignore2 = |
| env.getClassDeclaration(idJavaLangRuntimeException); |
| |
| for (Enumeration e = thrown.keys(); e.hasMoreElements();) { |
| ClassDeclaration c = (ClassDeclaration)e.nextElement(); |
| ClassDefinition def = c.getClassDefinition(env); |
| if (def.subClassOf(env, ignore1) |
| || def.subClassOf(env, ignore2)) { |
| continue; |
| } |
| |
| boolean ok = false; |
| if (!isInitializer()) { |
| for (int i = 0 ; i < exp.length ; i++) { |
| if (def.subClassOf(env, exp[i])) { |
| ok = true; |
| } |
| } |
| } |
| if (!ok) { |
| Node n = (Node)thrown.get(c); |
| long where = n.getWhere(); |
| String errorMsg; |
| |
| if (isConstructor()) { |
| if (where == |
| getClassDefinition().getWhere()) { |
| |
| // If this message is being generated for |
| // a default constructor, we should give |
| // a different error message. Currently |
| // we check for this by seeing if the |
| // constructor has the same "where" as |
| // its class. This is a bit kludgy, but |
| // works. (bug id 4034836) |
| errorMsg = "def.constructor.exception"; |
| } else { |
| // Constructor with uncaught exception. |
| errorMsg = "constructor.exception"; |
| } |
| } else if (isInitializer()) { |
| // Initializer with uncaught exception. |
| errorMsg = "initializer.exception"; |
| } else { |
| // Method with uncaught exception. |
| errorMsg = "uncaught.exception"; |
| } |
| env.error(where, errorMsg, c.getName()); |
| } |
| } |
| } else { |
| Hashtable thrown = new Hashtable(3); // small & throw-away |
| Expression val = (Expression)getValue(); |
| |
| vset = val.checkInitializer(env, ctx, vset, |
| getType(), thrown); |
| setValue(val.convert(env, ctx, getType(), val)); |
| |
| // Complain about static final members of inner classes that |
| // do not have an initializer that is a constant expression. |
| // In general, static members are not permitted for inner |
| // classes, but an exception is made for named constants. |
| // Other cases of static members, including non-final ones, |
| // are handled in 'SourceClass'. Part of fix for 4095568. |
| if (isStatic() && isFinal() && !clazz.isTopLevel()) { |
| if (!((Expression)getValue()).isConstant()) { |
| env.error(where, "static.inner.field", getName(), this); |
| setValue(null); |
| } |
| } |
| |
| |
| // Both RuntimeExceptions and Errors should be |
| // allowed in initializers. Fix for bug 4102541. |
| ClassDeclaration except = |
| env.getClassDeclaration(idJavaLangThrowable); |
| ClassDeclaration ignore1 = |
| env.getClassDeclaration(idJavaLangError); |
| ClassDeclaration ignore2 = |
| env.getClassDeclaration(idJavaLangRuntimeException); |
| |
| for (Enumeration e = thrown.keys(); e.hasMoreElements(); ) { |
| ClassDeclaration c = (ClassDeclaration)e.nextElement(); |
| ClassDefinition def = c.getClassDefinition(env); |
| |
| if (!def.subClassOf(env, ignore1) |
| && !def.subClassOf(env, ignore2) |
| && def.subClassOf(env, except)) { |
| Node n = (Node)thrown.get(c); |
| env.error(n.getWhere(), |
| "initializer.exception", c.getName()); |
| } |
| } |
| } |
| if (env.dump()) { |
| getValue().print(System.out); |
| System.out.println(); |
| } |
| } |
| status = getClassDefinition().getError() ? ERROR : CHECKED; |
| } |
| |
| |
| // Initializers (static and instance) must be able to complete normally. |
| if (isInitializer() && vset.isDeadEnd()) { |
| env.error(where, "init.no.normal.completion"); |
| vset = vset.clearDeadEnd(); |
| } |
| |
| return vset; |
| } |
| |
| // helper to check(): synthesize a missing super() call |
| private Expression getDefaultSuperCall(Environment env) { |
| Expression se = null; |
| ClassDefinition sclass = getClassDefinition().getSuperClass().getClassDefinition(); |
| // does the superclass constructor require an enclosing instance? |
| ClassDefinition reqc = (sclass == null) ? null |
| : sclass.isTopLevel() ? null |
| : sclass.getOuterClass(); |
| ClassDefinition thisc = getClassDefinition(); |
| if (reqc != null && !Context.outerLinkExists(env, reqc, thisc)) { |
| se = new SuperExpression(where, new NullExpression(where)); |
| env.error(where, "no.default.outer.arg", reqc, getClassDefinition()); |
| } |
| if (se == null) { |
| se = new SuperExpression(where); |
| } |
| return new MethodExpression(where, se, idInit, new Expression[0]); |
| } |
| |
| /** |
| * Inline the field |
| */ |
| void inline(Environment env) throws ClassNotFound { |
| switch (status) { |
| case PARSED: |
| check(env); |
| inline(env); |
| break; |
| |
| case CHECKED: |
| if (env.dump()) { |
| System.out.println("[inline field " + getClassDeclaration().getName() + "." + getName() + "]"); |
| } |
| status = INLINING; |
| env = new Environment(env, this); |
| |
| if (isMethod()) { |
| if ((!isNative()) && (!isAbstract())) { |
| Statement s = (Statement)getValue(); |
| Context ctx = new Context((Context)null, this); |
| for (Enumeration e = args.elements() ; e.hasMoreElements() ;) { |
| LocalMember local = (LocalMember)e.nextElement(); |
| ctx.declare(env, local); |
| } |
| setValue(s.inline(env, ctx)); |
| } |
| } else if (isInnerClass()) { |
| // some classes are checked and inlined separately |
| ClassDefinition nc = getInnerClass(); |
| if (nc instanceof SourceClass && !nc.isLocal() |
| && nc.isInsideLocal()) { |
| status = INLINING; |
| ((SourceClass)nc).inlineLocalClass(env); |
| } |
| status = INLINED; |
| break; |
| } else { |
| if (getValue() != null) { |
| Context ctx = new Context((Context)null, this); |
| if (!isStatic()) { |
| // Cf. "thisArg" in SourceClass.checkMembers(). |
| Context ctxInst = new Context(ctx, this); |
| LocalMember thisArg = |
| ((SourceClass)clazz).getThisArgument(); |
| ctxInst.declare(env, thisArg); |
| setValue(((Expression)getValue()) |
| .inlineValue(env, ctxInst)); |
| } else { |
| setValue(((Expression)getValue()) |
| .inlineValue(env, ctx)); |
| } |
| } |
| } |
| if (env.dump()) { |
| System.out.println("[inlined field " + getClassDeclaration().getName() + "." + getName() + "]"); |
| if (getValue() != null) { |
| getValue().print(System.out); |
| System.out.println(); |
| } else { |
| System.out.println("<empty>"); |
| } |
| } |
| status = INLINED; |
| break; |
| } |
| } |
| |
| /** |
| * Get the value of the field (or null if the value can't be determined) |
| */ |
| public Node getValue(Environment env) throws ClassNotFound { |
| Node value = getValue(); |
| if (value != null && status != INLINED) { |
| // be sure to get the imports right: |
| env = ((SourceClass)clazz).setupEnv(env); |
| inline(env); |
| value = (status == INLINED) ? getValue() : null; |
| } |
| return value; |
| } |
| |
| public boolean isInlineable(Environment env, boolean fromFinal) throws ClassNotFound { |
| if (super.isInlineable(env, fromFinal)) { |
| getValue(env); |
| return (status == INLINED) && !getClassDefinition().getError(); |
| } |
| return false; |
| } |
| |
| |
| /** |
| * Get the initial value of the field |
| */ |
| public Object getInitialValue() { |
| if (isMethod() || (getValue() == null) || (!isFinal()) || (status != INLINED)) { |
| return null; |
| } |
| return ((Expression)getValue()).getValue(); |
| } |
| |
| /** |
| * Generate code |
| */ |
| public void code(Environment env, Assembler asm) throws ClassNotFound { |
| switch (status) { |
| case PARSED: |
| check(env); |
| code(env, asm); |
| return; |
| |
| case CHECKED: |
| inline(env); |
| code(env, asm); |
| return; |
| |
| case INLINED: |
| // Actually generate code |
| if (env.dump()) { |
| System.out.println("[code field " + getClassDeclaration().getName() + "." + getName() + "]"); |
| } |
| if (isMethod() && (!isNative()) && (!isAbstract())) { |
| env = new Environment(env, this); |
| Context ctx = new Context((Context)null, this); |
| Statement s = (Statement)getValue(); |
| |
| for (Enumeration e = args.elements() ; e.hasMoreElements() ; ) { |
| LocalMember f = (LocalMember)e.nextElement(); |
| ctx.declare(env, f); |
| //ctx.declare(env, (LocalMember)e.nextElement()); |
| } |
| |
| /* |
| if (isConstructor() && ((s == null) || (s.firstConstructor() == null))) { |
| ClassDeclaration c = getClassDefinition().getSuperClass(); |
| if (c != null) { |
| MemberDefinition field = c.getClassDefinition(env).matchMethod(env, getClassDefinition(), idInit); |
| asm.add(getWhere(), opc_aload, new Integer(0)); |
| asm.add(getWhere(), opc_invokespecial, field); |
| asm.add(getWhere(), opc_pop); |
| } |
| |
| // Output initialization code |
| for (MemberDefinition f = getClassDefinition().getFirstMember() ; f != null ; f = f.getNextMember()) { |
| if (!f.isStatic()) { |
| f.codeInit(env, ctx, asm); |
| } |
| } |
| } |
| */ |
| if (s != null) { |
| s.code(env, ctx, asm); |
| } |
| if (getType().getReturnType().isType(TC_VOID) && !isInitializer()) { |
| asm.add(getWhere(), opc_return, true); |
| } |
| } |
| return; |
| } |
| } |
| |
| public void codeInit(Environment env, Context ctx, Assembler asm) throws ClassNotFound { |
| if (isMethod()) { |
| return; |
| } |
| switch (status) { |
| case PARSED: |
| check(env); |
| codeInit(env, ctx, asm); |
| return; |
| |
| case CHECKED: |
| inline(env); |
| codeInit(env, ctx, asm); |
| return; |
| |
| case INLINED: |
| // Actually generate code |
| if (env.dump()) { |
| System.out.println("[code initializer " + getClassDeclaration().getName() + "." + getName() + "]"); |
| } |
| if (getValue() != null) { |
| Expression e = (Expression)getValue(); |
| // The JLS Section 8.5 specifies that static (non-final) |
| // initializers should be executed in textual order. Eliding |
| // initializations to default values can interfere with this, |
| // so the tests for !e.equalsDefault() have been eliminated, |
| // below. |
| if (isStatic()) { |
| if (getInitialValue() == null) { |
| // removed: && !e.equalsDefault()) { |
| e.codeValue(env, ctx, asm); |
| asm.add(getWhere(), opc_putstatic, this); |
| } |
| } else { // removed: if (!e.equalsDefault()) { |
| // This code doesn't appear to be reached for |
| // instance initializers. Code for these is generated |
| // in the makeVarInits() method of the class |
| // MethodExpression. |
| asm.add(getWhere(), opc_aload, new Integer(0)); |
| e.codeValue(env, ctx, asm); |
| asm.add(getWhere(), opc_putfield, this); |
| } |
| } |
| return; |
| } |
| } |
| |
| /** |
| * Print for debugging |
| */ |
| public void print(PrintStream out) { |
| super.print(out); |
| if (getValue() != null) { |
| getValue().print(out); |
| out.println(); |
| } |
| } |
| } |
