Package java.dyn

Examples of java.dyn.MethodHandle

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        } else {
            site = new JRubyCallSite(type, CallType.FUNCTIONAL);
        }
       
        MethodType fallbackType = type.insertParameterTypes(0, JRubyCallSite.class);
        MethodHandle myFallback = MethodHandles.insertArguments(
                findStatic(InvokeDynamicSupport.class, "fallback",
                fallbackType),
                0,
                site);
        site.setTarget(myFallback);
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                        return createNativeGWT(nativeCall, test, fallback, entry, site);
                    }
                }
            }
        }
        MethodHandle myTest = MethodHandles.insertArguments(test, 0, entry.token);
        MethodHandle myTarget = MethodHandles.insertArguments(target, 0, entry);
        MethodHandle myFallback = MethodHandles.insertArguments(fallback, 0, site);
        MethodHandle guardWithTest = MethodHandles.guardWithTest(myTest, myTarget, myFallback);
       
        return MethodHandles.convertArguments(guardWithTest, site.type());
    }
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    }

    private static MethodHandle createNativeGWT(DynamicMethod.NativeCall nativeCall, MethodHandle test, MethodHandle fallback, CacheEntry entry, JRubyCallSite site) {
        try {
            boolean isStatic = nativeCall.isStatic();
            MethodHandle nativeTarget;
            if (isStatic) {
                nativeTarget = MethodHandles.lookup().findStatic(
                        nativeCall.getNativeTarget(),
                        nativeCall.getNativeName(),
                        MethodType.methodType(nativeCall.getNativeReturn(),
                        nativeCall.getNativeSignature()));
            } else {
                nativeTarget = MethodHandles.lookup().findVirtual(
                        nativeCall.getNativeTarget(),
                        nativeCall.getNativeName(),
                        MethodType.methodType(nativeCall.getNativeReturn(),
                        nativeCall.getNativeSignature()));
            }
            int argCount = getArgCount(nativeCall.getNativeSignature(), nativeCall.isStatic());
            switch (argCount) {
                case 0:
                    nativeTarget = MethodHandles.permuteArguments(nativeTarget, site.type(), isStatic ? new int[] {0, 2} : new int[] {2, 0});
                    break;
                case -1:
                case 1:
                    nativeTarget = MethodHandles.permuteArguments(nativeTarget, site.type(), isStatic ? new int[] {0, 2, 4} : new int[] {2, 0, 4});
                    break;
                case 2:
                    nativeTarget = MethodHandles.permuteArguments(nativeTarget, site.type(), isStatic ? new int[] {0, 2, 4, 5} : new int[] {2, 0, 4, 5});
                    break;
                case 3:
                    nativeTarget = MethodHandles.permuteArguments(nativeTarget, site.type(), isStatic ? new int[] {0, 2, 4, 5, 6} : new int[] {2, 0, 4, 5, 6});
                    break;
                default:
                    throw new RuntimeException("unknown arg count: " + argCount);
            }
            MethodHandle myFallback = MethodHandles.insertArguments(fallback, 0, site);
            MethodHandle myTest = MethodHandles.insertArguments(test, 0, entry.token);
            MethodHandle gwt = MethodHandles.guardWithTest(myTest, nativeTarget, myFallback);
            return MethodHandles.convertArguments(gwt, site.type());
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }
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        }
    }

    private static MethodHandle createRubyGWT(DynamicMethod.NativeCall nativeCall, MethodHandle test, MethodHandle fallback, CacheEntry entry, JRubyCallSite site) {
        try {
            MethodHandle nativeTarget;
            nativeTarget = MethodHandles.lookup().findStatic(
                    nativeCall.getNativeTarget(),
                    nativeCall.getNativeName(),
                    MethodType.methodType(nativeCall.getNativeReturn(),
                    nativeCall.getNativeSignature()));
            CompiledMethod cm = (CompiledMethod)entry.method;
            nativeTarget = MethodHandles.insertArguments(nativeTarget, 0, cm.getScriptObject());
            nativeTarget = MethodHandles.insertArguments(nativeTarget, nativeTarget.type().parameterCount() - 1, Block.NULL_BLOCK);
            int argCount = getRubyArgCount(nativeCall.getNativeSignature());
            switch (argCount) {
                case 0:
                    nativeTarget = MethodHandles.permuteArguments(nativeTarget, site.type(), new int[] {0, 2});
                    break;
                case -1:
                case 1:
                    nativeTarget = MethodHandles.permuteArguments(nativeTarget, site.type(), new int[] {0, 2, 4});
                    break;
                case 2:
                    nativeTarget = MethodHandles.permuteArguments(nativeTarget, site.type(), new int[] {0, 2, 4, 5});
                    break;
                case 3:
                    nativeTarget = MethodHandles.permuteArguments(nativeTarget, site.type(), new int[] {0, 2, 4, 5, 6});
                    break;
                default:
                    throw new RuntimeException("unknown arg count: " + argCount);
            }
            MethodHandle myFallback = MethodHandles.insertArguments(fallback, 0, site);
            MethodHandle myTest = MethodHandles.insertArguments(test, 0, entry.token);
            MethodHandle gwt = MethodHandles.guardWithTest(myTest, nativeTarget, myFallback);
            return MethodHandles.convertArguments(gwt, site.type());
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }
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Related Classes of java.dyn.MethodHandle

  • org.jruby.runtime.invokedynamic.InvokeDynamicSupport
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