Examples with VarSymbol com.sun.tools.javac.code.Symbol.VarSymbol used on opensource projects

Example 26 with VarSymbol

use of com.sun.tools.javac.code.Symbol.VarSymbol in project ceylon-compiler by ceylon.

the class Attr method selectSym.

private Symbol selectSym(JCFieldAccess tree, Symbol location, Type site, Env<AttrContext> env, Type pt, int pkind) {
    DiagnosticPosition pos = tree.pos();
    Name name = tree.name;
    switch(site.tag) {
        case PACKAGE:
            return rs.access(rs.findIdentInPackage(env, site.tsym, name, pkind), pos, location, site, name, true);
        case ARRAY:
        case CLASS:
            if (pt.tag == METHOD || pt.tag == FORALL) {
                return rs.resolveQualifiedMethod(pos, env, location, site, name, pt.getParameterTypes(), pt.getTypeArguments());
            } else if (name == names._this || name == names._super) {
                return rs.resolveSelf(pos, env, site.tsym, name);
            } else if (name == names._class) {
                // In this case, we have already made sure in
                // visitSelect that qualifier expression is a type.
                Type t = syms.classType;
                List<Type> typeargs = allowGenerics ? List.of(types.erasure(site)) : List.<Type>nil();
                t = new ClassType(t.getEnclosingType(), typeargs, t.tsym);
                return new VarSymbol(STATIC | PUBLIC | FINAL, names._class, t, site.tsym);
            } else {
                // We are seeing a plain identifier as selector.
                Symbol sym = rs.findIdentInType(env, site, name, pkind);
                if ((pkind & ERRONEOUS) == 0)
                    sym = rs.access(sym, pos, location, site, name, true);
                return sym;
            }
        case WILDCARD:
            throw new AssertionError(tree);
        case TYPEVAR:
            // Normally, site.getUpperBound() shouldn't be null.
            // It should only happen during memberEnter/attribBase
            // when determining the super type which *must* beac
            // done before attributing the type variables.  In
            // other words, we are seeing this illegal program:
            // class B<T> extends A<T.foo> {}
            Symbol sym = (site.getUpperBound() != null) ? selectSym(tree, location, capture(site.getUpperBound()), env, pt, pkind) : null;
            if (sym == null) {
                log.error(pos, "type.var.cant.be.deref");
                return syms.errSymbol;
            } else {
                // Ceylon: relax the rules for private methods in wildcards, damnit, we want the private
                // method to be called, not any subtype's method we can't possibly know about, this is really
                // a lame Java decision.
                Symbol sym2 = (!sourceLanguage.isCeylon() && (sym.flags() & Flags.PRIVATE) != 0) ? rs.new AccessError(env, site, sym) : sym;
                rs.access(sym2, pos, location, site, name, true);
                return sym;
            }
        case ERROR:
            // preserve identifier names through errors
            return types.createErrorType(name, site.tsym, site).tsym;
        default:
            // .class is allowed for these.
            if (name == names._class) {
                // In this case, we have already made sure in Select that
                // qualifier expression is a type.
                Type t = syms.classType;
                Type arg = types.boxedClass(site).type;
                t = new ClassType(t.getEnclosingType(), List.of(arg), t.tsym);
                return new VarSymbol(STATIC | PUBLIC | FINAL, names._class, t, site.tsym);
            } else {
                log.error(pos, "cant.deref", site);
                return syms.errSymbol;
            }
    }
}

Example 27 with VarSymbol

use of com.sun.tools.javac.code.Symbol.VarSymbol in project ceylon-compiler by ceylon.

the class Attr method visitIdent.

public void visitIdent(JCIdent tree) {
    Symbol sym;
    boolean varArgs = false;
    // Added by Ceylon
    if (tree instanceof JCIndyIdent) {
        sym = resolveIndyCall((JCIndyIdent) tree, pt.getParameterTypes());
    } else if (pt.tag == METHOD || pt.tag == FORALL) {
        // If we are looking for a method, the prototype `pt' will be a
        // method type with the type of the call's arguments as parameters.
        env.info.varArgs = false;
        sym = rs.resolveMethod(tree.pos(), env, tree.name, pt.getParameterTypes(), pt.getTypeArguments());
        varArgs = env.info.varArgs;
    } else if (tree.sym != null && tree.sym.kind != VAR) {
        sym = tree.sym;
    } else {
        sym = rs.resolveIdent(tree.pos(), env, tree.name, pkind);
    }
    tree.sym = sym;
    // (1) Also find the environment current for the class where
    //     sym is defined (`symEnv').
    // Only for pre-tiger versions (1.4 and earlier):
    // (2) Also determine whether we access symbol out of an anonymous
    //     class in a this or super call.  This is illegal for instance
    //     members since such classes don't carry a this$n link.
    //     (`noOuterThisPath').
    Env<AttrContext> symEnv = env;
    boolean noOuterThisPath = false;
    if (// we are in an inner class
    env.enclClass.sym.owner.kind != PCK && (sym.kind & (VAR | MTH | TYP)) != 0 && sym.owner.kind == TYP && tree.name != names._this && tree.name != names._super) {
        // Find environment in which identifier is defined.
        while (symEnv.outer != null && !sym.isMemberOf(symEnv.enclClass.sym, types)) {
            if ((symEnv.enclClass.sym.flags() & NOOUTERTHIS) != 0)
                noOuterThisPath = !allowAnonOuterThis;
            symEnv = symEnv.outer;
        }
    }
    // If symbol is a variable, ...
    if (sym.kind == VAR) {
        VarSymbol v = (VarSymbol) sym;
        // ..., evaluate its initializer, if it has one, and check for
        // illegal forward reference.
        checkInit(tree, env, v, false);
        // inner class check that it is final.
        if (v.owner.kind == MTH && v.owner != env.info.scope.owner && (v.flags_field & FINAL) == 0) {
            log.error(tree.pos(), "local.var.accessed.from.icls.needs.final", v);
        }
        // that the variable is assignable in the current environment.
        if (pkind == VAR)
            checkAssignable(tree.pos(), v, null, env);
    }
    // not accessed before the supertype constructor is called.
    if ((symEnv.info.isSelfCall || noOuterThisPath) && (sym.kind & (VAR | MTH)) != 0 && sym.owner.kind == TYP && (sym.flags() & STATIC) == 0) {
        chk.earlyRefError(tree.pos(), sym.kind == VAR ? sym : thisSym(tree.pos(), env));
    }
    Env<AttrContext> env1 = env;
    if (sym.kind != ERR && sym.kind != TYP && sym.owner != null && sym.owner != env1.enclClass.sym) {
        // enclosing instance:
        while (env1.outer != null && !rs.isAccessible(env, env1.enclClass.sym.type, sym)) env1 = env1.outer;
    }
    result = checkId(tree, env1.enclClass.sym.type, sym, env, pkind, pt, varArgs);
}

Example 28 with VarSymbol

use of com.sun.tools.javac.code.Symbol.VarSymbol in project groovy-cps by cloudbees.

the class Translator method translateMethod.

/**
     * @param e
     *      Method in {@code fqcn} to translate.
     */
private void translateMethod(final CompilationUnitTree cut, ExecutableElement e, JDefinedClass $output, String fqcn, String overloadResolved) {
    String methodName = n(e);
    boolean isPublic = e.getModifiers().contains(Modifier.PUBLIC);
    JMethod delegating = $output.method(isPublic ? JMod.PUBLIC | JMod.STATIC : JMod.STATIC, (JType) null, methodName);
    JMethod m = $output.method(JMod.PRIVATE | JMod.STATIC, (JType) null, overloadResolved);
    Map<String, JTypeVar> typeVars = new HashMap<>();
    e.getTypeParameters().forEach(p -> {
        String name = n(p);
        JTypeVar typeVar = delegating.generify(name);
        JTypeVar typeVar2 = m.generify(name);
        p.getBounds().forEach(b -> {
            JClass binding = (JClass) t(b, typeVars);
            typeVar.bound(binding);
            typeVar2.bound(binding);
        });
        typeVars.put(name, typeVar);
    });
    JType type = t(e.getReturnType(), typeVars);
    delegating.type(type);
    m.type(type);
    List<JVar> delegatingParams = new ArrayList<>();
    List<JVar> params = new ArrayList<>();
    e.getParameters().forEach(p -> {
        JType paramType = t(p.asType(), typeVars);
        delegatingParams.add(e.isVarArgs() && p == e.getParameters().get(e.getParameters().size() - 1) ? delegating.varParam(paramType.elementType(), n(p)) : delegating.param(paramType, n(p)));
        params.add(m.param(paramType, n(p)));
    });
    e.getThrownTypes().forEach(ex -> {
        delegating._throws((JClass) t(ex));
        m._throws((JClass) t(ex));
    });
    boolean returnsVoid = e.getReturnType().getKind() == TypeKind.VOID;
    if (isPublic) {
        // preamble
        /*
                If the call to this method happen outside CPS code, execute normally via DefaultGroovyMethods
             */
        delegating.body()._if(JOp.cand(JOp.not($Caller.staticInvoke("isAsynchronous").tap(inv -> {
            inv.arg(delegatingParams.get(0));
            inv.arg(methodName);
            for (int i = 1; i < delegatingParams.size(); i++) inv.arg(delegatingParams.get(i));
        })), JOp.not($Caller.staticInvoke("isAsynchronous").arg($output.dotclass()).arg(methodName).args(params))))._then().tap(blk -> {
            JClass $WhateverGroovyMethods = codeModel.ref(fqcn);
            JInvocation forward = $WhateverGroovyMethods.staticInvoke(methodName).args(delegatingParams);
            if (returnsVoid) {
                blk.add(forward);
                blk._return();
            } else {
                blk._return(forward);
            }
        });
    }
    JInvocation delegateCall = $output.staticInvoke(overloadResolved);
    if (returnsVoid) {
        delegating.body().add(delegateCall);
    } else {
        delegating.body()._return(delegateCall);
    }
    delegatingParams.forEach(p -> delegateCall.arg(p));
    JVar $b = m.body().decl($Builder, "b", JExpr._new($Builder).arg(JExpr.invoke("loc").arg(methodName)));
    JInvocation f = JExpr._new($CpsFunction);
    // parameter names
    f.arg(codeModel.ref(Arrays.class).staticInvoke("asList").tap(inv -> {
        e.getParameters().forEach(p -> inv.arg(n(p)));
    }));
    // translate the method body into an expression that invokes Builder
    f.arg(trees.getTree(e).getBody().accept(new SimpleTreeVisitor<JExpression, Void>() {

        private JExpression visit(Tree t) {
            if (t == null)
                return JExpr._null();
            return visit(t, null);
        }

        /**
             * Maps a symbol to its source location.
             */
        private JExpression loc(Tree t) {
            long pos = trees.getSourcePositions().getStartPosition(cut, t);
            return JExpr.lit((int) cut.getLineMap().getLineNumber(pos));
        }

        @Override
        public JExpression visitWhileLoop(WhileLoopTree wt, Void __) {
            return $b.invoke("while_").arg(// TODO: label
            JExpr._null()).arg(visit(wt.getCondition())).arg(visit(wt.getStatement()));
        }

        @Override
        public JExpression visitMethodInvocation(MethodInvocationTree mt, Void __) {
            ExpressionTree ms = mt.getMethodSelect();
            JInvocation inv;
            if (ms instanceof MemberSelectTree) {
                MemberSelectTree mst = (MemberSelectTree) ms;
                inv = $b.invoke("functionCall").arg(loc(mt)).arg(visit(mst.getExpression())).arg(n(mst.getIdentifier()));
            } else if (ms instanceof JCIdent) {
                // invocation without object selection, like  foo(bar,zot)
                JCIdent it = (JCIdent) ms;
                if (!it.sym.owner.toString().equals(fqcn)) {
                    // static import
                    inv = $b.invoke("functionCall").arg(loc(mt)).arg($b.invoke("constant").arg(t(it.sym.owner.type).dotclass())).arg(n(it));
                } else {
                    // invocation on this class
                    String overloadResolved = mangledName((Symbol.MethodSymbol) it.sym);
                    Optional<? extends Element> callSite = elements.getTypeElement(fqcn).getEnclosedElements().stream().filter(e -> e.getKind() == ElementKind.METHOD && mangledName((ExecutableElement) e).equals(overloadResolved)).findAny();
                    if (callSite.isPresent()) {
                        ExecutableElement e = (ExecutableElement) callSite.get();
                        if (e.getModifiers().contains(Modifier.PUBLIC) && !e.isVarArgs() && !e.getParameters().stream().anyMatch(p -> types.isAssignable(p.asType(), closureType))) {
                            // Delegate to the standard version.
                            inv = $b.invoke("staticCall").arg(loc(mt)).arg(t(it.sym.owner.type).dotclass()).arg(n(e));
                        } else if (overloadsResolved.containsKey(overloadResolved)) {
                            // Private, so delegate to our mangled version.
                            inv = $b.invoke("staticCall").arg(loc(mt)).arg($output.dotclass()).arg(overloadResolved);
                        } else {
                            throw new IllegalStateException("Not yet translating a " + e.getModifiers() + " method; translatable.txt might need to include: " + fqcn + "." + e);
                        }
                    } else {
                        throw new IllegalStateException("Could not find self-call site " + overloadResolved + " for " + mt);
                    }
                }
            } else {
                // TODO: figure out what can come here
                throw new UnsupportedOperationException(ms.toString());
            }
            mt.getArguments().forEach(a -> inv.arg(visit(a)));
            return inv;
        }

        @Override
        public JExpression visitVariable(VariableTree vt, Void __) {
            return $b.invoke("declareVariable").arg(loc(vt)).arg(erasure(vt).dotclass()).arg(n(vt)).arg(visit(vt.getInitializer()));
        }

        @Override
        public JExpression visitIdentifier(IdentifierTree it, Void __) {
            JCIdent idt = (JCIdent) it;
            return idt.sym.accept(new DefaultSymbolVisitor<JExpression, Void>() {

                @Override
                public JExpression visitClassSymbol(ClassSymbol cs, Void __) {
                    return $b.invoke("constant").arg(t(cs.asType()).dotclass());
                }

                @Override
                public JExpression visitVarSymbol(VarSymbol s, Void __) {
                    return $b.invoke("localVariable").arg(n(s.name));
                }

                @Override
                public JExpression visitSymbol(Symbol s, Void __) {
                    throw new UnsupportedOperationException(s.toString());
                }
            }, __);
        }

        @Override
        public JExpression visitBlock(BlockTree bt, Void __) {
            JInvocation inv = $b.invoke("block");
            bt.getStatements().forEach(s -> inv.arg(visit(s)));
            return inv;
        }

        @Override
        public JExpression visitReturn(ReturnTree rt, Void __) {
            return $b.invoke("return_").arg(visit(rt.getExpression()));
        }

        /**
             * When used outside {@link MethodInvocationTree}, this is property access.
             */
        @Override
        public JExpression visitMemberSelect(MemberSelectTree mt, Void __) {
            return $b.invoke("property").arg(loc(mt)).arg(visit(mt.getExpression())).arg(n(mt.getIdentifier()));
        }

        @Override
        public JExpression visitTypeCast(TypeCastTree tt, Void __) {
            return $b.invoke("cast").arg(loc(tt)).arg(visit(tt.getExpression())).arg(erasure(tt.getType()).dotclass()).arg(JExpr.lit(false));
        }

        @Override
        public JExpression visitIf(IfTree it, Void __) {
            JInvocation inv = $b.invoke("if_").arg(visit(it.getCondition())).arg(visit(it.getThenStatement()));
            if (it.getElseStatement() != null)
                inv.arg(visit(it.getElseStatement()));
            return inv;
        }

        @Override
        public JExpression visitNewClass(NewClassTree nt, Void __) {
            // TODO: outer class
            if (nt.getEnclosingExpression() != null)
                throw new UnsupportedOperationException();
            return $b.invoke("new_").tap(inv -> {
                inv.arg(loc(nt));
                inv.arg(t(((JCTree) nt).type).dotclass());
                nt.getArguments().forEach(et -> inv.arg(visit(et)));
            });
        }

        @Override
        public JExpression visitExpressionStatement(ExpressionStatementTree et, Void __) {
            return visit(et.getExpression());
        }

        @Override
        public JExpression visitLiteral(LiteralTree lt, Void __) {
            return $b.invoke("constant").arg(JExpr.literal(lt.getValue()));
        }

        @Override
        public JExpression visitParenthesized(ParenthesizedTree pt, Void __) {
            return visit(pt.getExpression());
        }

        @Override
        public JExpression visitBinary(BinaryTree bt, Void __) {
            return $b.invoke(opName(bt.getKind())).arg(loc(bt)).arg(visit(bt.getLeftOperand())).arg(visit(bt.getRightOperand()));
        }

        @Override
        public JExpression visitUnary(UnaryTree ut, Void __) {
            return $b.invoke(opName(ut.getKind())).arg(loc(ut)).arg(visit(ut.getExpression()));
        }

        @Override
        public JExpression visitCompoundAssignment(CompoundAssignmentTree ct, Void __) {
            return $b.invoke(opName(ct.getKind())).arg(loc(ct)).arg(visit(ct.getVariable())).arg(visit(ct.getExpression()));
        }

        private String opName(Kind kind) {
            switch(kind) {
                case EQUAL_TO:
                    return "compareEqual";
                case NOT_EQUAL_TO:
                    return "compareNotEqual";
                case LESS_THAN_EQUAL:
                    return "lessThanEqual";
                case LESS_THAN:
                    return "lessThan";
                case GREATER_THAN_EQUAL:
                    return "greaterThanEqual";
                case GREATER_THAN:
                    return "greaterThan";
                case PREFIX_INCREMENT:
                    return "prefixInc";
                case POSTFIX_INCREMENT:
                    return "postfixInc";
                case POSTFIX_DECREMENT:
                    return "postfixDec";
                case LOGICAL_COMPLEMENT:
                    return "not";
                case CONDITIONAL_OR:
                    return "logicalOr";
                case CONDITIONAL_AND:
                    return "logicalAnd";
                case PLUS:
                    return "plus";
                case PLUS_ASSIGNMENT:
                    return "plusEqual";
                case MINUS:
                    return "minus";
                case MINUS_ASSIGNMENT:
                    return "minusEqual";
            }
            throw new UnsupportedOperationException(kind.toString());
        }

        @Override
        public JExpression visitAssignment(AssignmentTree at, Void __) {
            return $b.invoke("assign").arg(loc(at)).arg(visit(at.getVariable())).arg(visit(at.getExpression()));
        }

        @Override
        public JExpression visitNewArray(NewArrayTree nt, Void __) {
            if (nt.getInitializers() != null) {
                return $b.invoke("newArrayFromInitializers").tap(inv -> {
                    nt.getInitializers().forEach(d -> inv.arg(visit(d)));
                });
            } else {
                return $b.invoke("newArray").tap(inv -> {
                    inv.arg(loc(nt));
                    inv.arg(t(nt.getType()).dotclass());
                    nt.getDimensions().forEach(d -> inv.arg(visit(d)));
                });
            }
        }

        @Override
        public JExpression visitForLoop(ForLoopTree ft, Void __) {
            return $b.invoke("forLoop").arg(JExpr._null()).arg($b.invoke("sequence").tap(inv -> ft.getInitializer().forEach(i -> inv.arg(visit(i))))).arg(visit(ft.getCondition())).arg($b.invoke("sequence").tap(inv -> ft.getUpdate().forEach(i -> inv.arg(visit(i))))).arg(visit(ft.getStatement()));
        }

        @Override
        public JExpression visitEnhancedForLoop(EnhancedForLoopTree et, Void __) {
            return $b.invoke("forInLoop").arg(loc(et)).arg(JExpr._null()).arg(erasure(et.getVariable()).dotclass()).arg(n(et.getVariable())).arg(visit(et.getExpression())).arg(visit(et.getStatement()));
        }

        @Override
        public JExpression visitArrayAccess(ArrayAccessTree at, Void __) {
            return $b.invoke("array").arg(loc(at)).arg(visit(at.getExpression())).arg(visit(at.getIndex()));
        }

        @Override
        public JExpression visitBreak(BreakTree node, Void __) {
            if (node.getLabel() != null)
                throw new UnsupportedOperationException();
            return $b.invoke("break_").arg(JExpr._null());
        }

        @Override
        public JExpression visitContinue(ContinueTree node, Void aVoid) {
            if (node.getLabel() != null)
                throw new UnsupportedOperationException();
            return $b.invoke("continue_").arg(JExpr._null());
        }

        @Override
        public JExpression visitInstanceOf(InstanceOfTree it, Void __) {
            return $b.invoke("instanceOf").arg(loc(it)).arg(visit(it.getExpression())).arg($b.invoke("constant").arg(t(it.getType()).dotclass()));
        }

        @Override
        public JExpression visitThrow(ThrowTree tt, Void __) {
            return $b.invoke("throw_").arg(loc(tt)).arg(visit(tt.getExpression()));
        }

        @Override
        public JExpression visitDoWhileLoop(DoWhileLoopTree dt, Void __) {
            return $b.invoke("doWhile").arg(JExpr._null()).arg(visit(dt.getStatement())).arg(visit(dt.getCondition()));
        }

        @Override
        public JExpression visitConditionalExpression(ConditionalExpressionTree ct, Void __) {
            return $b.invoke("ternaryOp").arg(visit(ct.getCondition())).arg(visit(ct.getTrueExpression())).arg(visit(ct.getFalseExpression()));
        }

        @Override
        public JExpression visitTry(TryTree tt, Void __) {
            return $b.invoke("tryCatch").arg(visit(tt.getBlock())).arg(visit(tt.getFinallyBlock())).tap(inv -> tt.getCatches().forEach(ct -> JExpr._new($CatchExpression).arg(t(ct.getParameter()).dotclass()).arg(n(ct.getParameter())).arg(visit(ct.getBlock()))));
        }

        @Override
        protected JExpression defaultAction(Tree node, Void aVoid) {
            throw new UnsupportedOperationException(node.toString());
        }
    }, null));
    JVar $f = m.body().decl($CpsFunction, "f", f);
    m.body()._throw(JExpr._new($CpsCallableInvocation).arg($f).arg(JExpr._null()).args(params));
}

Example 29 with VarSymbol

use of com.sun.tools.javac.code.Symbol.VarSymbol in project bazel by bazelbuild.

the class AnnotationUtils method getElementValueEnum.

/**
     * Version that is suitable for Enum elements.
     */
public static <T extends Enum<T>> T getElementValueEnum(AnnotationMirror anno, CharSequence name, Class<T> t, boolean useDefaults) {
    VarSymbol vs = getElementValue(anno, name, VarSymbol.class, useDefaults);
    T value = Enum.valueOf(t, vs.getSimpleName().toString());
    return value;
}

Example 30 with VarSymbol

use of com.sun.tools.javac.code.Symbol.VarSymbol in project error-prone by google.

the class MockitoCast method matchCompilationUnit.

@Override
public Description matchCompilationUnit(CompilationUnitTree tree, final VisitorState state) {
    Symbol mockitoSym = state.getSymbolFromString(MOCKITO_CLASS);
    if (mockitoSym == null) {
        // fast path if mockito isn't being used
        return Description.NO_MATCH;
    }
    // collect variable symbols for standard Answer constants that don't support generics
    final Set<Symbol> badAnswers = new LinkedHashSet<>();
    for (Symbol member : mockitoSym.members().getSymbols(LookupKind.NON_RECURSIVE)) {
        if (member.getKind() != ElementKind.FIELD) {
            continue;
        }
        if (BAD_ANSWER_STRATEGIES.contains(member.getSimpleName().toString())) {
            badAnswers.add(member);
        }
    }
    // collect mocks that are initialized in this compilation unit using a bad answer strategy
    final Set<VarSymbol> mockVariables = MockInitializationScanner.scan(state, badAnswers);
    // check for when(...) calls on mocks using a bad answer strategy
    new WhenNeedsCastScanner(mockVariables, state).scan(state.getPath(), null);
    // errors are reported in WhenNeedsCastScanner
    return Description.NO_MATCH;
}