-package org.simantics.scl.compiler.internal.codegen.utils;\r
-\r
-import java.lang.reflect.Method;\r
-\r
-import org.simantics.scl.runtime.function.FunctionImpl1;\r
-import org.simantics.scl.runtime.function.FunctionImpl2;\r
-import org.simantics.scl.runtime.function.FunctionImpl3;\r
-import org.simantics.scl.runtime.function.FunctionImpl4;\r
-import org.simantics.scl.runtime.function.FunctionImplN;\r
-import org.simantics.scl.runtime.tuple.Tuple0;\r
-\r
-public class ValueFromMethod {\r
-\r
- public static Object getValueFromStaticMethod(final Method method) throws ReflectiveOperationException {\r
- int arity = method.getParameterTypes().length;\r
- final boolean returnsVoid = method.getReturnType().equals(void.class);\r
- switch(arity) {\r
- case 0: {\r
- Object ret = method.invoke(null);\r
- return returnsVoid ? Tuple0.INSTANCE : ret;\r
- }\r
- case 1:\r
- return new FunctionImpl1<Object,Object>() {\r
- @Override\r
- public Object apply(Object p0) {\r
- try {\r
- Object ret = method.invoke(null, p0);\r
- return returnsVoid ? Tuple0.INSTANCE : ret;\r
- } catch (ReflectiveOperationException e) {\r
- throw new RuntimeException(e);\r
- }\r
- }\r
- };\r
- case 2:\r
- return new FunctionImpl2<Object,Object,Object>() {\r
- @Override\r
- public Object apply(Object p0, Object p1) {\r
- try {\r
- Object ret = method.invoke(null, p0, p1);\r
- return returnsVoid ? Tuple0.INSTANCE : ret;\r
- } catch (ReflectiveOperationException e) {\r
- throw new RuntimeException(e);\r
- }\r
- }\r
- };\r
- case 3:\r
- return new FunctionImpl3<Object,Object,Object,Object>() {\r
- @Override\r
- public Object apply(Object p0, Object p1, Object p2) {\r
- try {\r
- Object ret = method.invoke(null, p0, p1, p2);\r
- return returnsVoid ? Tuple0.INSTANCE : ret;\r
- } catch (ReflectiveOperationException e) {\r
- throw new RuntimeException(e);\r
- }\r
- }\r
- };\r
- case 4:\r
- return new FunctionImpl4<Object,Object,Object,Object,Object>() {\r
- @Override\r
- public Object apply(Object p0, Object p1, Object p2, Object p3) {\r
- try {\r
- Object ret = method.invoke(null, p0, p1, p2, p3);\r
- return returnsVoid ? Tuple0.INSTANCE : ret;\r
- } catch (ReflectiveOperationException e) {\r
- throw new RuntimeException(e);\r
- }\r
- }\r
- };\r
- default:\r
- return new FunctionImplN(arity) {\r
- @Override\r
- public Object doApply(Object... ps) {\r
- try {\r
- Object ret = method.invoke(null, ps);\r
- return returnsVoid ? Tuple0.INSTANCE : ret;\r
- } catch (ReflectiveOperationException e) {\r
- throw new RuntimeException(e);\r
- }\r
- }\r
- };\r
- }\r
- }\r
- \r
-}\r
+package org.simantics.scl.compiler.internal.codegen.utils;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+import org.simantics.scl.runtime.function.FunctionImpl1;
+import org.simantics.scl.runtime.function.FunctionImpl2;
+import org.simantics.scl.runtime.function.FunctionImpl3;
+import org.simantics.scl.runtime.function.FunctionImpl4;
+import org.simantics.scl.runtime.function.FunctionImplN;
+import org.simantics.scl.runtime.tuple.Tuple0;
+
+public class ValueFromMethod {
+
+ private static final class Arity1Func extends FunctionImpl1<Object, Object> {
+ private final Method method;
+ private final boolean returnsVoid;
+
+ private Arity1Func(Method method, boolean returnsVoid) {
+ this.method = method;
+ this.returnsVoid = returnsVoid;
+ }
+
+ @Override
+ public Object apply(Object p0) {
+ try {
+ Object ret = method.invoke(null, p0);
+ return returnsVoid ? Tuple0.INSTANCE : ret;
+ } catch (ReflectiveOperationException e) {
+ if (e instanceof InvocationTargetException)
+ throw new RuntimeException(e.getCause());
+ throw new RuntimeException(e);
+ }
+ }
+
+ @Override
+ public int hashCode() {
+ return method == null ? 0 : method.hashCode();
+ }
+
+ @Override
+ public boolean equals(Object obj) {
+ if (this == obj)
+ return true;
+ if (obj == null)
+ return false;
+ if (getClass() != obj.getClass())
+ return false;
+ Arity1Func other = (Arity1Func) obj;
+ return method.equals(other.method);
+ }
+ }
+
+ private static final class Arity2Func extends FunctionImpl2<Object, Object, Object> {
+ private final Method method;
+ private final boolean returnsVoid;
+
+ private Arity2Func(Method method, boolean returnsVoid) {
+ this.method = method;
+ this.returnsVoid = returnsVoid;
+ }
+
+ @Override
+ public Object apply(Object p0, Object p1) {
+ try {
+ Object ret = method.invoke(null, p0, p1);
+ return returnsVoid ? Tuple0.INSTANCE : ret;
+ } catch (ReflectiveOperationException e) {
+ throw new RuntimeException(e);
+ }
+ }
+
+ @Override
+ public int hashCode() {
+ return method == null ? 0 : method.hashCode();
+ }
+
+ @Override
+ public boolean equals(Object obj) {
+ if (this == obj)
+ return true;
+ if (obj == null)
+ return false;
+ if (getClass() != obj.getClass())
+ return false;
+ Arity2Func other = (Arity2Func) obj;
+ return method.equals(other.method);
+ }
+ }
+
+ private static final class Arity3Func extends FunctionImpl3<Object, Object, Object, Object> {
+ private final Method method;
+ private final boolean returnsVoid;
+
+ private Arity3Func(Method method, boolean returnsVoid) {
+ this.method = method;
+ this.returnsVoid = returnsVoid;
+ }
+
+ @Override
+ public Object apply(Object p0, Object p1, Object p2) {
+ try {
+ Object ret = method.invoke(null, p0, p1, p2);
+ return returnsVoid ? Tuple0.INSTANCE : ret;
+ } catch (ReflectiveOperationException e) {
+ throw new RuntimeException(e);
+ }
+ }
+
+ @Override
+ public int hashCode() {
+ return method == null ? 0 : method.hashCode();
+ }
+
+ @Override
+ public boolean equals(Object obj) {
+ if (this == obj)
+ return true;
+ if (obj == null)
+ return false;
+ if (getClass() != obj.getClass())
+ return false;
+ Arity3Func other = (Arity3Func) obj;
+ return method.equals(other.method);
+ }
+ }
+
+ private static final class Arity4Func extends FunctionImpl4<Object, Object, Object, Object, Object> {
+ private final Method method;
+ private final boolean returnsVoid;
+
+ private Arity4Func(Method method, boolean returnsVoid) {
+ this.method = method;
+ this.returnsVoid = returnsVoid;
+ }
+
+ @Override
+ public Object apply(Object p0, Object p1, Object p2, Object p3) {
+ try {
+ Object ret = method.invoke(null, p0, p1, p2, p3);
+ return returnsVoid ? Tuple0.INSTANCE : ret;
+ } catch (ReflectiveOperationException e) {
+ throw new RuntimeException(e);
+ }
+ }
+
+ @Override
+ public int hashCode() {
+ return method == null ? 0 : method.hashCode();
+ }
+
+ @Override
+ public boolean equals(Object obj) {
+ if (this == obj)
+ return true;
+ if (obj == null)
+ return false;
+ if (getClass() != obj.getClass())
+ return false;
+ Arity4Func other = (Arity4Func) obj;
+ return method.equals(other.method);
+ }
+ }
+
+ private static final class ArityNFunc extends FunctionImplN {
+ private final Method method;
+ private final boolean returnsVoid;
+
+ private ArityNFunc(int arity, Method method, boolean returnsVoid) {
+ super(arity);
+ this.method = method;
+ this.returnsVoid = returnsVoid;
+ }
+
+ @Override
+ public Object doApply(Object... ps) {
+ try {
+ Object ret = method.invoke(null, ps);
+ return returnsVoid ? Tuple0.INSTANCE : ret;
+ } catch (ReflectiveOperationException e) {
+ throw new RuntimeException(e);
+ }
+ }
+
+ @Override
+ public int hashCode() {
+ return method == null ? 0 : method.hashCode();
+ }
+
+ @Override
+ public boolean equals(Object obj) {
+ if (this == obj)
+ return true;
+ if (obj == null)
+ return false;
+ if (getClass() != obj.getClass())
+ return false;
+ ArityNFunc other = (ArityNFunc) obj;
+ return method.equals(other.method);
+ }
+ }
+
+ public static Object getValueFromStaticMethod(final Method method) throws ReflectiveOperationException {
+ int arity = method.getParameterTypes().length;
+ final boolean returnsVoid = method.getReturnType().equals(void.class);
+ switch(arity) {
+ case 0: {
+ Object ret = method.invoke(null);
+ return returnsVoid ? Tuple0.INSTANCE : ret;
+ }
+ case 1:
+ return new Arity1Func(method, returnsVoid);
+ case 2:
+ return new Arity2Func(method, returnsVoid);
+ case 3:
+ return new Arity3Func(method, returnsVoid);
+ case 4:
+ return new Arity4Func(method, returnsVoid);
+ default:
+ return new ArityNFunc(arity, method, returnsVoid);
+ }
+ }
+
+}
Code Review / simantics / platform.git / blobdiff