8010922: Cleanup: add support for ad-hoc method check logic

Mon, 08 Apr 2013 15:51:41 +0100

author
mcimadamore
date
Mon, 08 Apr 2013 15:51:41 +0100
changeset 1674
b71a61d39cf7
parent 1673
e06dc8345d9c
child 1675
b54122b9372d

8010922: Cleanup: add support for ad-hoc method check logic
Summary: Support pluggable method checkers
Reviewed-by: jjg

src/share/classes/com/sun/tools/javac/comp/Attr.java file | annotate | diff | comparison | revisions
src/share/classes/com/sun/tools/javac/comp/DeferredAttr.java file | annotate | diff | comparison | revisions
src/share/classes/com/sun/tools/javac/comp/Infer.java file | annotate | diff | comparison | revisions
src/share/classes/com/sun/tools/javac/comp/Resolve.java file | annotate | diff | comparison | revisions
     1.1 --- a/src/share/classes/com/sun/tools/javac/comp/Attr.java	Fri Apr 05 14:51:55 2013 -0700
     1.2 +++ b/src/share/classes/com/sun/tools/javac/comp/Attr.java	Mon Apr 08 15:51:41 2013 +0100
     1.3 @@ -2574,8 +2574,9 @@
     1.4              setFunctionalInfo(that, pt(), desc, resultInfo.checkContext.inferenceContext());
     1.5              List<Type> argtypes = desc.getParameterTypes();
     1.6  
     1.7 -            Pair<Symbol, Resolve.ReferenceLookupHelper> refResult = rs.resolveMemberReference(that.pos(), localEnv, that,
     1.8 -                    that.expr.type, that.name, argtypes, typeargtypes, true);
     1.9 +            Pair<Symbol, Resolve.ReferenceLookupHelper> refResult =
    1.10 +                    rs.resolveMemberReference(that.pos(), localEnv, that,
    1.11 +                        that.expr.type, that.name, argtypes, typeargtypes, true, rs.resolveMethodCheck);
    1.12  
    1.13              Symbol refSym = refResult.fst;
    1.14              Resolve.ReferenceLookupHelper lookupHelper = refResult.snd;
     2.1 --- a/src/share/classes/com/sun/tools/javac/comp/DeferredAttr.java	Fri Apr 05 14:51:55 2013 -0700
     2.2 +++ b/src/share/classes/com/sun/tools/javac/comp/DeferredAttr.java	Mon Apr 08 15:51:41 2013 +0100
     2.3 @@ -1,5 +1,5 @@
     2.4  /*
     2.5 - * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
     2.6 + * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
     2.7   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     2.8   *
     2.9   * This code is free software; you can redistribute it and/or modify it
    2.10 @@ -28,6 +28,7 @@
    2.11  import com.sun.tools.javac.code.*;
    2.12  import com.sun.tools.javac.tree.*;
    2.13  import com.sun.tools.javac.util.*;
    2.14 +import com.sun.tools.javac.util.JCDiagnostic.DiagnosticPosition;
    2.15  import com.sun.tools.javac.code.Symbol.*;
    2.16  import com.sun.tools.javac.code.Type.*;
    2.17  import com.sun.tools.javac.comp.Attr.ResultInfo;
    2.18 @@ -531,12 +532,13 @@
    2.19                              attr.memberReferenceQualifierResult(tree));
    2.20                      ListBuffer<Type> argtypes = ListBuffer.lb();
    2.21                      for (Type t : types.findDescriptorType(pt).getParameterTypes()) {
    2.22 -                        argtypes.append(syms.errType);
    2.23 +                        argtypes.append(Type.noType);
    2.24                      }
    2.25                      JCMemberReference mref2 = new TreeCopier<Void>(make).copy(tree);
    2.26                      mref2.expr = exprTree;
    2.27                      Pair<Symbol, ?> lookupRes =
    2.28 -                            rs.resolveMemberReference(tree, env, mref2, exprTree.type, tree.name, argtypes.toList(), null, true);
    2.29 +                            rs.resolveMemberReference(tree, env, mref2, exprTree.type,
    2.30 +                                tree.name, argtypes.toList(), null, true, rs.arityMethodCheck);
    2.31                      switch (lookupRes.fst.kind) {
    2.32                          //note: as argtypes are erroneous types, type-errors must
    2.33                          //have been caused by arity mismatch
     3.1 --- a/src/share/classes/com/sun/tools/javac/comp/Infer.java	Fri Apr 05 14:51:55 2013 -0700
     3.2 +++ b/src/share/classes/com/sun/tools/javac/comp/Infer.java	Mon Apr 08 15:51:41 2013 +0100
     3.3 @@ -143,7 +143,6 @@
     3.4                                    boolean allowBoxing,
     3.5                                    boolean useVarargs,
     3.6                                    Resolve.MethodResolutionContext resolveContext,
     3.7 -                                  Resolve.MethodCheck methodCheck,
     3.8                                    Warner warn) throws InferenceException {
     3.9          //-System.err.println("instantiateMethod(" + tvars + ", " + mt + ", " + argtypes + ")"); //DEBUG
    3.10          final InferenceContext inferenceContext = new InferenceContext(tvars);
    3.11 @@ -152,7 +151,7 @@
    3.12              DeferredAttr.DeferredAttrContext deferredAttrContext =
    3.13                      resolveContext.deferredAttrContext(msym, inferenceContext, resultInfo, warn);
    3.14  
    3.15 -            methodCheck.argumentsAcceptable(env, deferredAttrContext,
    3.16 +            resolveContext.methodCheck.argumentsAcceptable(env, deferredAttrContext,
    3.17                      argtypes, mt.getParameterTypes(), warn);
    3.18  
    3.19              if (allowGraphInference &&
     4.1 --- a/src/share/classes/com/sun/tools/javac/comp/Resolve.java	Fri Apr 05 14:51:55 2013 -0700
     4.2 +++ b/src/share/classes/com/sun/tools/javac/comp/Resolve.java	Mon Apr 08 15:51:41 2013 +0100
     4.3 @@ -508,7 +508,6 @@
     4.4                          List<Type> typeargtypes,
     4.5                          boolean allowBoxing,
     4.6                          boolean useVarargs,
     4.7 -                        MethodCheck methodCheck,
     4.8                          Warner warn) throws Infer.InferenceException {
     4.9  
    4.10          Type mt = types.memberType(site, m);
    4.11 @@ -561,10 +560,9 @@
    4.12                                      allowBoxing,
    4.13                                      useVarargs,
    4.14                                      currentResolutionContext,
    4.15 -                                    methodCheck,
    4.16                                      warn);
    4.17  
    4.18 -        methodCheck.argumentsAcceptable(env, currentResolutionContext.deferredAttrContext(m, infer.emptyContext, resultInfo, warn),
    4.19 +        currentResolutionContext.methodCheck.argumentsAcceptable(env, currentResolutionContext.deferredAttrContext(m, infer.emptyContext, resultInfo, warn),
    4.20                                  argtypes, mt.getParameterTypes(), warn);
    4.21          return mt;
    4.22      }
    4.23 @@ -582,7 +580,7 @@
    4.24              currentResolutionContext.attrMode = DeferredAttr.AttrMode.CHECK;
    4.25              MethodResolutionPhase step = currentResolutionContext.step = env.info.pendingResolutionPhase;
    4.26              return rawInstantiate(env, site, m, resultInfo, argtypes, typeargtypes,
    4.27 -                    step.isBoxingRequired(), step.isVarargsRequired(), resolveMethodCheck, warn);
    4.28 +                    step.isBoxingRequired(), step.isVarargsRequired(), warn);
    4.29          }
    4.30          finally {
    4.31              currentResolutionContext = prevContext;
    4.32 @@ -599,11 +597,10 @@
    4.33                       List<Type> typeargtypes,
    4.34                       boolean allowBoxing,
    4.35                       boolean useVarargs,
    4.36 -                     MethodCheck methodCheck,
    4.37                       Warner warn) {
    4.38          try {
    4.39              return rawInstantiate(env, site, m, resultInfo, argtypes, typeargtypes,
    4.40 -                                  allowBoxing, useVarargs, methodCheck, warn);
    4.41 +                                  allowBoxing, useVarargs, warn);
    4.42          } catch (InapplicableMethodException ex) {
    4.43              return null;
    4.44          }
    4.45 @@ -628,6 +625,12 @@
    4.46                                  List<Type> argtypes,
    4.47                                  List<Type> formals,
    4.48                                  Warner warn);
    4.49 +
    4.50 +        /**
    4.51 +         * Retrieve the method check object that will be used during a
    4.52 +         * most specific check.
    4.53 +         */
    4.54 +        MethodCheck mostSpecificCheck(List<Type> actuals, boolean strict);
    4.55      }
    4.56  
    4.57      /**
    4.58 @@ -661,6 +664,100 @@
    4.59      }
    4.60  
    4.61      /**
    4.62 +     * Dummy method check object. All methods are deemed applicable, regardless
    4.63 +     * of their formal parameter types.
    4.64 +     */
    4.65 +    MethodCheck nilMethodCheck = new MethodCheck() {
    4.66 +        public void argumentsAcceptable(Env<AttrContext> env, DeferredAttrContext deferredAttrContext, List<Type> argtypes, List<Type> formals, Warner warn) {
    4.67 +            //do nothing - method always applicable regardless of actuals
    4.68 +        }
    4.69 +
    4.70 +        public MethodCheck mostSpecificCheck(List<Type> actuals, boolean strict) {
    4.71 +            return this;
    4.72 +        }
    4.73 +    };
    4.74 +
    4.75 +    /**
    4.76 +     * Base class for 'real' method checks. The class defines the logic for
    4.77 +     * iterating through formals and actuals and provides and entry point
    4.78 +     * that can be used by subclasses in order to define the actual check logic.
    4.79 +     */
    4.80 +    abstract class AbstractMethodCheck implements MethodCheck {
    4.81 +        @Override
    4.82 +        public void argumentsAcceptable(final Env<AttrContext> env,
    4.83 +                                    DeferredAttrContext deferredAttrContext,
    4.84 +                                    List<Type> argtypes,
    4.85 +                                    List<Type> formals,
    4.86 +                                    Warner warn) {
    4.87 +            //should we expand formals?
    4.88 +            boolean useVarargs = deferredAttrContext.phase.isVarargsRequired();
    4.89 +
    4.90 +            //inference context used during this method check
    4.91 +            InferenceContext inferenceContext = deferredAttrContext.inferenceContext;
    4.92 +
    4.93 +            Type varargsFormal = useVarargs ? formals.last() : null;
    4.94 +
    4.95 +            if (varargsFormal == null &&
    4.96 +                    argtypes.size() != formals.size()) {
    4.97 +                reportMC(MethodCheckDiag.ARITY_MISMATCH, inferenceContext); // not enough args
    4.98 +            }
    4.99 +
   4.100 +            while (argtypes.nonEmpty() && formals.head != varargsFormal) {
   4.101 +                checkArg(false, argtypes.head, formals.head, deferredAttrContext, warn);
   4.102 +                argtypes = argtypes.tail;
   4.103 +                formals = formals.tail;
   4.104 +            }
   4.105 +
   4.106 +            if (formals.head != varargsFormal) {
   4.107 +                reportMC(MethodCheckDiag.ARITY_MISMATCH, inferenceContext); // not enough args
   4.108 +            }
   4.109 +
   4.110 +            if (useVarargs) {
   4.111 +                //note: if applicability check is triggered by most specific test,
   4.112 +                //the last argument of a varargs is _not_ an array type (see JLS 15.12.2.5)
   4.113 +                final Type elt = types.elemtype(varargsFormal);
   4.114 +                while (argtypes.nonEmpty()) {
   4.115 +                    checkArg(true, argtypes.head, elt, deferredAttrContext, warn);
   4.116 +                    argtypes = argtypes.tail;
   4.117 +                }
   4.118 +            }
   4.119 +        }
   4.120 +
   4.121 +        /**
   4.122 +         * Does the actual argument conforms to the corresponding formal?
   4.123 +         */
   4.124 +        abstract void checkArg(boolean varargs, Type actual, Type formal, DeferredAttrContext deferredAttrContext, Warner warn);
   4.125 +
   4.126 +        protected void reportMC(MethodCheckDiag diag, InferenceContext inferenceContext, Object... args) {
   4.127 +            boolean inferDiag = inferenceContext != infer.emptyContext;
   4.128 +            InapplicableMethodException ex = inferDiag ?
   4.129 +                    infer.inferenceException : inapplicableMethodException;
   4.130 +            if (inferDiag && (!diag.inferKey.equals(diag.basicKey))) {
   4.131 +                Object[] args2 = new Object[args.length + 1];
   4.132 +                System.arraycopy(args, 0, args2, 1, args.length);
   4.133 +                args2[0] = inferenceContext.inferenceVars();
   4.134 +                args = args2;
   4.135 +            }
   4.136 +            throw ex.setMessage(inferDiag ? diag.inferKey : diag.basicKey, args);
   4.137 +        }
   4.138 +
   4.139 +        public MethodCheck mostSpecificCheck(List<Type> actuals, boolean strict) {
   4.140 +            return nilMethodCheck;
   4.141 +        }
   4.142 +    }
   4.143 +
   4.144 +    /**
   4.145 +     * Arity-based method check. A method is applicable if the number of actuals
   4.146 +     * supplied conforms to the method signature.
   4.147 +     */
   4.148 +    MethodCheck arityMethodCheck = new AbstractMethodCheck() {
   4.149 +        @Override
   4.150 +        void checkArg(boolean varargs, Type actual, Type formal, DeferredAttrContext deferredAttrContext, Warner warn) {
   4.151 +            //do nothing - actual always compatible to formals
   4.152 +        }
   4.153 +    };
   4.154 +
   4.155 +    /**
   4.156       * Main method applicability routine. Given a list of actual types A,
   4.157       * a list of formal types F, determines whether the types in A are
   4.158       * compatible (by method invocation conversion) with the types in F.
   4.159 @@ -678,62 +775,27 @@
   4.160       *
   4.161       * A method check handler (see above) is used in order to report errors.
   4.162       */
   4.163 -    MethodCheck resolveMethodCheck = new MethodCheck() {
   4.164 +    MethodCheck resolveMethodCheck = new AbstractMethodCheck() {
   4.165 +
   4.166 +        @Override
   4.167 +        void checkArg(boolean varargs, Type actual, Type formal, DeferredAttrContext deferredAttrContext, Warner warn) {
   4.168 +            ResultInfo mresult = methodCheckResult(varargs, formal, deferredAttrContext, warn);
   4.169 +            mresult.check(null, actual);
   4.170 +        }
   4.171 +
   4.172          @Override
   4.173          public void argumentsAcceptable(final Env<AttrContext> env,
   4.174                                      DeferredAttrContext deferredAttrContext,
   4.175                                      List<Type> argtypes,
   4.176                                      List<Type> formals,
   4.177                                      Warner warn) {
   4.178 +            super.argumentsAcceptable(env, deferredAttrContext, argtypes, formals, warn);
   4.179              //should we expand formals?
   4.180 -            boolean useVarargs = deferredAttrContext.phase.isVarargsRequired();
   4.181 -
   4.182 -            //inference context used during this method check
   4.183 -            InferenceContext inferenceContext = deferredAttrContext.inferenceContext;
   4.184 -
   4.185 -            Type varargsFormal = useVarargs ? formals.last() : null;
   4.186 -
   4.187 -            if (varargsFormal == null &&
   4.188 -                    argtypes.size() != formals.size()) {
   4.189 -                reportMC(MethodCheckDiag.ARITY_MISMATCH, inferenceContext); // not enough args
   4.190 +            if (deferredAttrContext.phase.isVarargsRequired()) {
   4.191 +                //check varargs element type accessibility
   4.192 +                varargsAccessible(env, types.elemtype(formals.last()),
   4.193 +                        deferredAttrContext.inferenceContext);
   4.194              }
   4.195 -
   4.196 -            while (argtypes.nonEmpty() && formals.head != varargsFormal) {
   4.197 -                ResultInfo mresult = methodCheckResult(false, formals.head, deferredAttrContext, warn);
   4.198 -                mresult.check(null, argtypes.head);
   4.199 -                argtypes = argtypes.tail;
   4.200 -                formals = formals.tail;
   4.201 -            }
   4.202 -
   4.203 -            if (formals.head != varargsFormal) {
   4.204 -                reportMC(MethodCheckDiag.ARITY_MISMATCH, inferenceContext); // not enough args
   4.205 -            }
   4.206 -
   4.207 -            if (useVarargs) {
   4.208 -                //note: if applicability check is triggered by most specific test,
   4.209 -                //the last argument of a varargs is _not_ an array type (see JLS 15.12.2.5)
   4.210 -                final Type elt = types.elemtype(varargsFormal);
   4.211 -                ResultInfo mresult = methodCheckResult(true, elt, deferredAttrContext, warn);
   4.212 -                while (argtypes.nonEmpty()) {
   4.213 -                    mresult.check(null, argtypes.head);
   4.214 -                    argtypes = argtypes.tail;
   4.215 -                }
   4.216 -                //check varargs element type accessibility
   4.217 -                varargsAccessible(env, elt, inferenceContext);
   4.218 -            }
   4.219 -        }
   4.220 -
   4.221 -        private void reportMC(MethodCheckDiag diag, InferenceContext inferenceContext, Object... args) {
   4.222 -            boolean inferDiag = inferenceContext != infer.emptyContext;
   4.223 -            InapplicableMethodException ex = inferDiag ?
   4.224 -                    infer.inferenceException : inapplicableMethodException;
   4.225 -            if (inferDiag && (!diag.inferKey.equals(diag.basicKey))) {
   4.226 -                Object[] args2 = new Object[args.length + 1];
   4.227 -                System.arraycopy(args, 0, args2, 1, args.length);
   4.228 -                args2[0] = inferenceContext.inferenceVars();
   4.229 -                args = args2;
   4.230 -            }
   4.231 -            throw ex.setMessage(inferDiag ? diag.inferKey : diag.basicKey, args);
   4.232          }
   4.233  
   4.234          private void varargsAccessible(final Env<AttrContext> env, final Type t, final InferenceContext inferenceContext) {
   4.235 @@ -765,6 +827,11 @@
   4.236              };
   4.237              return new MethodResultInfo(to, checkContext);
   4.238          }
   4.239 +
   4.240 +        @Override
   4.241 +        public MethodCheck mostSpecificCheck(List<Type> actuals, boolean strict) {
   4.242 +            return new MostSpecificCheck(strict, actuals);
   4.243 +        }
   4.244      };
   4.245  
   4.246      /**
   4.247 @@ -1042,6 +1109,11 @@
   4.248                  }
   4.249              }
   4.250          }
   4.251 +
   4.252 +        public MethodCheck mostSpecificCheck(List<Type> actuals, boolean strict) {
   4.253 +            Assert.error("Cannot get here!");
   4.254 +            return null;
   4.255 +        }
   4.256      }
   4.257  
   4.258      public static class InapplicableMethodException extends RuntimeException {
   4.259 @@ -1254,7 +1326,7 @@
   4.260          Assert.check(sym.kind < AMBIGUOUS);
   4.261          try {
   4.262              Type mt = rawInstantiate(env, site, sym, null, argtypes, typeargtypes,
   4.263 -                               allowBoxing, useVarargs, resolveMethodCheck, types.noWarnings);
   4.264 +                               allowBoxing, useVarargs, types.noWarnings);
   4.265              if (!operator)
   4.266                  currentResolutionContext.addApplicableCandidate(sym, mt);
   4.267          } catch (InapplicableMethodException ex) {
   4.268 @@ -1358,11 +1430,20 @@
   4.269          int maxLength = Math.max(
   4.270                              Math.max(m1.type.getParameterTypes().length(), actuals.length()),
   4.271                              m2.type.getParameterTypes().length());
   4.272 -        Type mst = instantiate(env, site, m2, null,
   4.273 -                adjustArgs(types.lowerBounds(types.memberType(site, m1).getParameterTypes()), m1, maxLength, useVarargs), null,
   4.274 -                allowBoxing, useVarargs, new MostSpecificCheck(!allowBoxing, actuals), noteWarner);
   4.275 -        return mst != null &&
   4.276 -                !noteWarner.hasLint(Lint.LintCategory.UNCHECKED);
   4.277 +        MethodResolutionContext prevResolutionContext = currentResolutionContext;
   4.278 +        try {
   4.279 +            currentResolutionContext = new MethodResolutionContext();
   4.280 +            currentResolutionContext.step = prevResolutionContext.step;
   4.281 +            currentResolutionContext.methodCheck =
   4.282 +                    prevResolutionContext.methodCheck.mostSpecificCheck(actuals, !allowBoxing);
   4.283 +            Type mst = instantiate(env, site, m2, null,
   4.284 +                    adjustArgs(types.lowerBounds(types.memberType(site, m1).getParameterTypes()), m1, maxLength, useVarargs), null,
   4.285 +                    allowBoxing, useVarargs, noteWarner);
   4.286 +            return mst != null &&
   4.287 +                    !noteWarner.hasLint(Lint.LintCategory.UNCHECKED);
   4.288 +        } finally {
   4.289 +            currentResolutionContext = prevResolutionContext;
   4.290 +        }
   4.291      }
   4.292      private List<Type> adjustArgs(List<Type> args, Symbol msym, int length, boolean allowVarargs) {
   4.293          if ((msym.flags() & VARARGS) != 0 && allowVarargs) {
   4.294 @@ -2124,14 +2205,14 @@
   4.295                           Name name,
   4.296                           List<Type> argtypes,
   4.297                           List<Type> typeargtypes) {
   4.298 -        return lookupMethod(env, pos, env.enclClass.sym, new BasicLookupHelper(name, env.enclClass.sym.type, argtypes, typeargtypes) {
   4.299 -            @Override
   4.300 -            Symbol lookup(Env<AttrContext> env, MethodResolutionPhase phase) {
   4.301 -                return findFun(env, name, argtypes, typeargtypes,
   4.302 -                        phase.isBoxingRequired(),
   4.303 -                        phase.isVarargsRequired());
   4.304 -            }
   4.305 -        });
   4.306 +        return lookupMethod(env, pos, env.enclClass.sym, resolveMethodCheck,
   4.307 +                new BasicLookupHelper(name, env.enclClass.sym.type, argtypes, typeargtypes) {
   4.308 +                    @Override
   4.309 +                    Symbol lookup(Env<AttrContext> env, MethodResolutionPhase phase) {
   4.310 +                        return findFun(env, name, argtypes, typeargtypes,
   4.311 +                                phase.isBoxingRequired(),
   4.312 +                                phase.isVarargsRequired());
   4.313 +                    }});
   4.314      }
   4.315  
   4.316      /** Resolve a qualified method identifier
   4.317 @@ -2313,36 +2394,36 @@
   4.318                                Type site,
   4.319                                List<Type> argtypes,
   4.320                                List<Type> typeargtypes) {
   4.321 -        return lookupMethod(env, pos, site.tsym, new BasicLookupHelper(names.init, site, argtypes, typeargtypes) {
   4.322 -            @Override
   4.323 -            Symbol lookup(Env<AttrContext> env, MethodResolutionPhase phase) {
   4.324 -                return findDiamond(env, site, argtypes, typeargtypes,
   4.325 -                        phase.isBoxingRequired(),
   4.326 -                        phase.isVarargsRequired());
   4.327 -            }
   4.328 -            @Override
   4.329 -            Symbol access(Env<AttrContext> env, DiagnosticPosition pos, Symbol location, Symbol sym) {
   4.330 -                if (sym.kind >= AMBIGUOUS) {
   4.331 -                    final JCDiagnostic details = sym.kind == WRONG_MTH ?
   4.332 -                                    ((InapplicableSymbolError)sym).errCandidate().details :
   4.333 -                                    null;
   4.334 -                    sym = new InapplicableSymbolError(sym.kind, "diamondError", currentResolutionContext) {
   4.335 -                        @Override
   4.336 -                        JCDiagnostic getDiagnostic(DiagnosticType dkind, DiagnosticPosition pos,
   4.337 -                                Symbol location, Type site, Name name, List<Type> argtypes, List<Type> typeargtypes) {
   4.338 -                            String key = details == null ?
   4.339 -                                "cant.apply.diamond" :
   4.340 -                                "cant.apply.diamond.1";
   4.341 -                            return diags.create(dkind, log.currentSource(), pos, key,
   4.342 -                                    diags.fragment("diamond", site.tsym), details);
   4.343 +        return lookupMethod(env, pos, site.tsym, resolveMethodCheck,
   4.344 +                new BasicLookupHelper(names.init, site, argtypes, typeargtypes) {
   4.345 +                    @Override
   4.346 +                    Symbol lookup(Env<AttrContext> env, MethodResolutionPhase phase) {
   4.347 +                        return findDiamond(env, site, argtypes, typeargtypes,
   4.348 +                                phase.isBoxingRequired(),
   4.349 +                                phase.isVarargsRequired());
   4.350 +                    }
   4.351 +                    @Override
   4.352 +                    Symbol access(Env<AttrContext> env, DiagnosticPosition pos, Symbol location, Symbol sym) {
   4.353 +                        if (sym.kind >= AMBIGUOUS) {
   4.354 +                            final JCDiagnostic details = sym.kind == WRONG_MTH ?
   4.355 +                                            ((InapplicableSymbolError)sym).errCandidate().details :
   4.356 +                                            null;
   4.357 +                            sym = new InapplicableSymbolError(sym.kind, "diamondError", currentResolutionContext) {
   4.358 +                                @Override
   4.359 +                                JCDiagnostic getDiagnostic(DiagnosticType dkind, DiagnosticPosition pos,
   4.360 +                                        Symbol location, Type site, Name name, List<Type> argtypes, List<Type> typeargtypes) {
   4.361 +                                    String key = details == null ?
   4.362 +                                        "cant.apply.diamond" :
   4.363 +                                        "cant.apply.diamond.1";
   4.364 +                                    return diags.create(dkind, log.currentSource(), pos, key,
   4.365 +                                            diags.fragment("diamond", site.tsym), details);
   4.366 +                                }
   4.367 +                            };
   4.368 +                            sym = accessMethod(sym, pos, site, names.init, true, argtypes, typeargtypes);
   4.369 +                            env.info.pendingResolutionPhase = currentResolutionContext.step;
   4.370                          }
   4.371 -                    };
   4.372 -                    sym = accessMethod(sym, pos, site, names.init, true, argtypes, typeargtypes);
   4.373 -                    env.info.pendingResolutionPhase = currentResolutionContext.step;
   4.374 -                }
   4.375 -                return sym;
   4.376 -            }
   4.377 -        });
   4.378 +                        return sym;
   4.379 +                    }});
   4.380      }
   4.381  
   4.382      /** This method scans all the constructor symbol in a given class scope -
   4.383 @@ -2475,7 +2556,8 @@
   4.384                                    Type site,
   4.385                                    Name name, List<Type> argtypes,
   4.386                                    List<Type> typeargtypes,
   4.387 -                                  boolean boxingAllowed) {
   4.388 +                                  boolean boxingAllowed,
   4.389 +                                  MethodCheck methodCheck) {
   4.390          MethodResolutionPhase maxPhase = boxingAllowed ? VARARITY : BASIC;
   4.391  
   4.392          ReferenceLookupHelper boundLookupHelper;
   4.393 @@ -2495,12 +2577,12 @@
   4.394  
   4.395          //step 1 - bound lookup
   4.396          Env<AttrContext> boundEnv = env.dup(env.tree, env.info.dup());
   4.397 -        Symbol boundSym = lookupMethod(boundEnv, env.tree.pos(), site.tsym, boundLookupHelper);
   4.398 +        Symbol boundSym = lookupMethod(boundEnv, env.tree.pos(), site.tsym, methodCheck, boundLookupHelper);
   4.399  
   4.400          //step 2 - unbound lookup
   4.401          ReferenceLookupHelper unboundLookupHelper = boundLookupHelper.unboundLookup();
   4.402          Env<AttrContext> unboundEnv = env.dup(env.tree, env.info.dup());
   4.403 -        Symbol unboundSym = lookupMethod(unboundEnv, env.tree.pos(), site.tsym, unboundLookupHelper);
   4.404 +        Symbol unboundSym = lookupMethod(unboundEnv, env.tree.pos(), site.tsym, methodCheck, unboundLookupHelper);
   4.405  
   4.406          //merge results
   4.407          Pair<Symbol, ReferenceLookupHelper> res;
   4.408 @@ -2671,7 +2753,7 @@
   4.409          ReferenceLookupHelper unboundLookup() {
   4.410              if (TreeInfo.isStaticSelector(referenceTree.expr, names) &&
   4.411                      argtypes.nonEmpty() &&
   4.412 -                    types.isSubtypeUnchecked(argtypes.head, site)) {
   4.413 +                    (argtypes.head.hasTag(NONE) || types.isSubtypeUnchecked(argtypes.head, site))) {
   4.414                  return new UnboundMethodReferenceLookupHelper(referenceTree, name,
   4.415                          site, argtypes, typeargtypes, maxPhase);
   4.416              } else {
   4.417 @@ -2704,8 +2786,8 @@
   4.418          UnboundMethodReferenceLookupHelper(JCMemberReference referenceTree, Name name, Type site,
   4.419                  List<Type> argtypes, List<Type> typeargtypes, MethodResolutionPhase maxPhase) {
   4.420              super(referenceTree, name, site, argtypes.tail, typeargtypes, maxPhase);
   4.421 -            Type asSuperSite = types.asSuper(argtypes.head, site.tsym);
   4.422 -            if (site.isRaw() && !asSuperSite.isErroneous()) {
   4.423 +            if (site.isRaw() && !argtypes.head.hasTag(NONE)) {
   4.424 +                Type asSuperSite = types.asSuper(argtypes.head, site.tsym);
   4.425                  this.site = asSuperSite;
   4.426              }
   4.427          }
   4.428 @@ -2800,8 +2882,10 @@
   4.429       * at the end of the lookup, the helper is used to validate the results
   4.430       * (this last step might trigger overload resolution diagnostics).
   4.431       */
   4.432 -    Symbol lookupMethod(Env<AttrContext> env, DiagnosticPosition pos, Symbol location, LookupHelper lookupHelper) {
   4.433 -        return lookupMethod(env, pos, location, new MethodResolutionContext(), lookupHelper);
   4.434 +    Symbol lookupMethod(Env<AttrContext> env, DiagnosticPosition pos, Symbol location, MethodCheck methodCheck, LookupHelper lookupHelper) {
   4.435 +        MethodResolutionContext resolveContext = new MethodResolutionContext();
   4.436 +        resolveContext.methodCheck = methodCheck;
   4.437 +        return lookupMethod(env, pos, location, resolveContext, lookupHelper);
   4.438      }
   4.439  
   4.440      Symbol lookupMethod(Env<AttrContext> env, DiagnosticPosition pos, Symbol location,
   4.441 @@ -3595,6 +3679,8 @@
   4.442  
   4.443          MethodResolutionPhase step = null;
   4.444  
   4.445 +        MethodCheck methodCheck = resolveMethodCheck;
   4.446 +
   4.447          private boolean internalResolution = false;
   4.448          private DeferredAttr.AttrMode attrMode = DeferredAttr.AttrMode.SPECULATIVE;
   4.449  

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