use of org.drools.core.rule.builder.dialect.asm.GeneratorHelper.DeclarationMatcher in project drools by kiegroup.
the class EvalGenerator method generate.
public static void generate(final EvalStub stub, final Tuple tuple, final Declaration[] declarations, final WorkingMemory workingMemory) {
final String[] globals = stub.getGlobals();
final String[] globalTypes = stub.getGlobalTypes();
// Sort declarations based on their offset, so it can ascend the tuple's parents stack only once
final List<DeclarationMatcher> declarationMatchers = matchDeclarationsToTuple(declarations);
final ClassGenerator generator = createInvokerClassGenerator(stub, workingMemory).setInterfaces(EvalExpression.class, CompiledInvoker.class);
generator.addMethod(ACC_PUBLIC, "createContext", generator.methodDescr(Object.class), new ClassGenerator.MethodBody() {
public void body(MethodVisitor mv) {
mv.visitInsn(ACONST_NULL);
mv.visitInsn(ARETURN);
}
}).addMethod(ACC_PUBLIC, "clone", generator.methodDescr(EvalExpression.class), new ClassGenerator.MethodBody() {
public void body(MethodVisitor mv) {
mv.visitVarInsn(ALOAD, 0);
mv.visitInsn(ARETURN);
}
}).addMethod(ACC_PUBLIC, "replaceDeclaration", generator.methodDescr(null, Declaration.class, Declaration.class)).addMethod(ACC_PUBLIC, "evaluate", generator.methodDescr(Boolean.TYPE, Tuple.class, Declaration[].class, WorkingMemory.class, Object.class), new String[] { "java/lang/Exception" }, new GeneratorHelper.EvaluateMethod() {
public void body(MethodVisitor mv) {
objAstorePos = 7;
String[] expectedDeclarations = stub.getExpectedDeclarationTypes();
int[] declarationsParamsPos = new int[declarations.length];
mv.visitVarInsn(ALOAD, 1);
cast(LeftTuple.class);
// LeftTuple
mv.visitVarInsn(ASTORE, 5);
Tuple currentTuple = tuple;
for (DeclarationMatcher matcher : declarationMatchers) {
int i = matcher.getOriginalIndex();
declarationsParamsPos[i] = objAstorePos;
currentTuple = traverseTuplesUntilDeclaration(currentTuple, matcher.getRootDistance(), 5);
mv.visitVarInsn(ALOAD, 2);
push(i);
// declarations[i]
mv.visitInsn(AALOAD);
// workingMemory
mv.visitVarInsn(ALOAD, 3);
mv.visitVarInsn(ALOAD, 5);
invokeInterface(LeftTuple.class, "getFactHandle", InternalFactHandle.class);
// tuple.getFactHandle().getObject()
invokeInterface(InternalFactHandle.class, "getObject", Object.class);
storeObjectFromDeclaration(declarations[i], expectedDeclarations[i]);
}
// @{ruleClassName}.@{methodName}(@foreach{declarations}, @foreach{globals})
StringBuilder evalMethodDescr = new StringBuilder("(");
for (int i = 0; i < declarations.length; i++) {
// declarations[i]
load(declarationsParamsPos[i]);
evalMethodDescr.append(typeDescr(expectedDeclarations[i]));
}
// @foreach{type : globalTypes, identifier : globals} @{type} @{identifier} = ( @{type} ) workingMemory.getGlobal( "@{identifier}" );
parseGlobals(globals, globalTypes, 3, evalMethodDescr);
evalMethodDescr.append(")Z");
mv.visitMethodInsn(INVOKESTATIC, stub.getInternalRuleClassName(), stub.getMethodName(), evalMethodDescr.toString());
mv.visitInsn(IRETURN);
}
});
stub.setEval(generator.<EvalExpression>newInstance());
}
use of org.drools.core.rule.builder.dialect.asm.GeneratorHelper.DeclarationMatcher in project drools by kiegroup.
the class PredicateGenerator method generate.
public static void generate(final PredicateStub stub, final Tuple tuple, final Declaration[] previousDeclarations, final Declaration[] localDeclarations, final WorkingMemory workingMemory) {
final String[] globals = stub.getGlobals();
final String[] globalTypes = stub.getGlobalTypes();
// Sort declarations based on their offset, so it can ascend the tuple's parents stack only once
final List<DeclarationMatcher> declarationMatchers = matchDeclarationsToTuple(previousDeclarations);
final ClassGenerator generator = createInvokerClassGenerator(stub, workingMemory).setInterfaces(PredicateExpression.class, CompiledInvoker.class);
generator.addMethod(ACC_PUBLIC, "createContext", generator.methodDescr(Object.class), new ClassGenerator.MethodBody() {
public void body(MethodVisitor mv) {
mv.visitInsn(ACONST_NULL);
mv.visitInsn(ARETURN);
}
}).addMethod(ACC_PUBLIC, "evaluate", generator.methodDescr(Boolean.TYPE, InternalFactHandle.class, Tuple.class, Declaration[].class, Declaration[].class, WorkingMemory.class, Object.class), new String[] { "java/lang/Exception" }, new GeneratorHelper.EvaluateMethod() {
public void body(MethodVisitor mv) {
objAstorePos = 9;
int[] previousDeclarationsParamsPos = new int[previousDeclarations.length];
mv.visitVarInsn(ALOAD, 1);
invokeInterface(InternalFactHandle.class, "getObject", Object.class);
mv.visitVarInsn(ASTORE, 1);
mv.visitVarInsn(ALOAD, 2);
cast(LeftTuple.class);
// LeftTuple
mv.visitVarInsn(ASTORE, 7);
Tuple currentTuple = tuple;
for (DeclarationMatcher matcher : declarationMatchers) {
int i = matcher.getOriginalIndex();
previousDeclarationsParamsPos[i] = objAstorePos;
currentTuple = traverseTuplesUntilDeclaration(currentTuple, matcher.getRootDistance(), 7);
mv.visitVarInsn(ALOAD, 3);
push(i);
// declarations[i]
mv.visitInsn(AALOAD);
// workingMemory
mv.visitVarInsn(ALOAD, 5);
mv.visitVarInsn(ALOAD, 7);
invokeInterface(LeftTuple.class, "getFactHandle", InternalFactHandle.class);
// tuple.getFactHandle().getObject()
invokeInterface(InternalFactHandle.class, "getObject", Object.class);
storeObjectFromDeclaration(previousDeclarations[i], previousDeclarations[i].getTypeName());
}
int[] localDeclarationsParamsPos = parseDeclarations(localDeclarations, 4, 2, 5, false);
// @{ruleClassName}.@{methodName}(@foreach{previousDeclarations}, @foreach{localDeclarations}, @foreach{globals})
StringBuilder predicateMethodDescr = new StringBuilder("(");
for (int i = 0; i < previousDeclarations.length; i++) {
// previousDeclarations[i]
load(previousDeclarationsParamsPos[i]);
predicateMethodDescr.append(typeDescr(previousDeclarations[i].getTypeName()));
}
for (int i = 0; i < localDeclarations.length; i++) {
// localDeclarations[i]
load(localDeclarationsParamsPos[i]);
predicateMethodDescr.append(typeDescr(localDeclarations[i].getTypeName()));
}
// @foreach{type : globalTypes, identifier : globals} @{type} @{identifier} = ( @{type} ) workingMemory.getGlobal( "@{identifier}" );
parseGlobals(globals, globalTypes, 5, predicateMethodDescr);
predicateMethodDescr.append(")Z");
mv.visitMethodInsn(INVOKESTATIC, stub.getInternalRuleClassName(), stub.getMethodName(), predicateMethodDescr.toString());
mv.visitInsn(IRETURN);
}
});
stub.setPredicate(generator.<PredicateExpression>newInstance());
}
use of org.drools.core.rule.builder.dialect.asm.GeneratorHelper.DeclarationMatcher in project drools by kiegroup.
the class ReturnValueGenerator method generate.
public static void generate(final ReturnValueStub stub, final Tuple tuple, final Declaration[] previousDeclarations, final Declaration[] localDeclarations, final WorkingMemory workingMemory) {
final String[] globals = stub.getGlobals();
final String[] globalTypes = stub.getGlobalTypes();
// Sort declarations based on their offset, so it can ascend the tuple's parents stack only once
final List<DeclarationMatcher> declarationMatchers = matchDeclarationsToTuple(previousDeclarations);
final ClassGenerator generator = createInvokerClassGenerator(stub, workingMemory).setInterfaces(ReturnValueExpression.class, CompiledInvoker.class);
generator.addMethod(ACC_PUBLIC, "createContext", generator.methodDescr(Object.class), new ClassGenerator.MethodBody() {
public void body(MethodVisitor mv) {
mv.visitInsn(ACONST_NULL);
mv.visitInsn(ARETURN);
}
}).addMethod(ACC_PUBLIC, "replaceDeclaration", generator.methodDescr(null, Declaration.class, Declaration.class)).addMethod(ACC_PUBLIC, "evaluate", generator.methodDescr(FieldValue.class, Object.class, Tuple.class, Declaration[].class, Declaration[].class, WorkingMemory.class, Object.class), new String[] { "java/lang/Exception" }, new GeneratorHelper.EvaluateMethod() {
public void body(MethodVisitor mv) {
objAstorePos = 9;
int[] previousDeclarationsParamsPos = new int[previousDeclarations.length];
mv.visitVarInsn(ALOAD, 2);
cast(LeftTuple.class);
// LeftTuple
mv.visitVarInsn(ASTORE, 7);
Tuple currentTuple = tuple;
for (DeclarationMatcher matcher : declarationMatchers) {
int i = matcher.getOriginalIndex();
previousDeclarationsParamsPos[i] = objAstorePos;
currentTuple = traverseTuplesUntilDeclaration(currentTuple, matcher.getRootDistance(), 7);
mv.visitVarInsn(ALOAD, 3);
push(i);
// declarations[i]
mv.visitInsn(AALOAD);
// workingMemory
mv.visitVarInsn(ALOAD, 5);
mv.visitVarInsn(ALOAD, 7);
invokeInterface(LeftTuple.class, "getFactHandle", InternalFactHandle.class);
// tuple.getFactHandle().getObject()
invokeInterface(InternalFactHandle.class, "getObject", Object.class);
storeObjectFromDeclaration(previousDeclarations[i], previousDeclarations[i].getTypeName());
}
int[] localDeclarationsParamsPos = parseDeclarations(localDeclarations, 4, 2, 5, false);
// @{ruleClassName}.@{methodName}(@foreach{previousDeclarations}, @foreach{localDeclarations}, @foreach{globals})
StringBuilder returnValueMethodDescr = new StringBuilder("(");
for (int i = 0; i < previousDeclarations.length; i++) {
// previousDeclarations[i]
load(previousDeclarationsParamsPos[i]);
returnValueMethodDescr.append(typeDescr(previousDeclarations[i].getTypeName()));
}
for (int i = 0; i < localDeclarations.length; i++) {
// localDeclarations[i]
load(localDeclarationsParamsPos[i]);
returnValueMethodDescr.append(typeDescr(localDeclarations[i].getTypeName()));
}
// @foreach{type : globalTypes, identifier : globals} @{type} @{identifier} = ( @{type} ) workingMemory.getGlobal( "@{identifier}" );
parseGlobals(globals, globalTypes, 5, returnValueMethodDescr);
returnValueMethodDescr.append(")Lorg/drools/core/spi/FieldValue;");
mv.visitMethodInsn(INVOKESTATIC, stub.getInternalRuleClassName(), stub.getMethodName(), returnValueMethodDescr.toString());
mv.visitInsn(ARETURN);
}
});
stub.setReturnValue(generator.<ReturnValueExpression>newInstance());
}
use of org.drools.core.rule.builder.dialect.asm.GeneratorHelper.DeclarationMatcher in project drools by kiegroup.
the class ConsequenceGenerator method generate.
public static void generate(final ConsequenceStub stub, KnowledgeHelper knowledgeHelper, WorkingMemory workingMemory) {
RuleTerminalNode rtn = (RuleTerminalNode) knowledgeHelper.getMatch().getTuple().getTupleSink();
final Declaration[] declarations = rtn.getRequiredDeclarations();
final Tuple tuple = knowledgeHelper.getTuple();
// Sort declarations based on their offset, so it can ascend the tuple's parents stack only once
final List<DeclarationMatcher> declarationMatchers = matchDeclarationsToTuple(declarations);
final ClassGenerator generator = createInvokerClassGenerator(stub, workingMemory).setInterfaces(Consequence.class, CompiledInvoker.class);
generator.addMethod(ACC_PUBLIC, "getName", generator.methodDescr(String.class), new ClassGenerator.MethodBody() {
public void body(MethodVisitor mv) {
push(stub.getGeneratedInvokerClassName());
mv.visitInsn(ARETURN);
}
}).addMethod(ACC_PUBLIC, "evaluate", generator.methodDescr(null, KnowledgeHelper.class, WorkingMemory.class), new String[] { "java/lang/Exception" }, new GeneratorHelper.EvaluateMethod() {
public void body(MethodVisitor mv) {
// Tuple tuple = knowledgeHelper.getTuple();
mv.visitVarInsn(ALOAD, 1);
invokeInterface(KnowledgeHelper.class, "getTuple", Tuple.class);
cast(LeftTuple.class);
// LeftTuple
mv.visitVarInsn(ASTORE, 3);
// Declaration[] declarations = ((RuleTerminalNode)knowledgeHelper.getMatch().getTuple().getTupleSink()).getDeclarations();
mv.visitVarInsn(ALOAD, 1);
invokeInterface(KnowledgeHelper.class, "getMatch", Activation.class);
invokeInterface(Activation.class, "getTuple", Tuple.class);
invokeInterface(Tuple.class, "getTupleSink", Sink.class);
cast(RuleTerminalNode.class);
invokeVirtual(RuleTerminalNode.class, "getRequiredDeclarations", Declaration[].class);
mv.visitVarInsn(ASTORE, 4);
Tuple currentTuple = tuple;
// astore start position for objects to store in loop
objAstorePos = 6;
int[] paramsPos = new int[declarations.length];
// declarationMatchers is already sorted by offset with tip declarations now first
for (DeclarationMatcher matcher : declarationMatchers) {
// original index refers to the array position with RuleTerminalNode.getDeclarations()
int i = matcher.getOriginalIndex();
int handlePos = objAstorePos;
int objPos = ++objAstorePos;
paramsPos[i] = handlePos;
currentTuple = traverseTuplesUntilDeclaration(currentTuple, matcher.getRootDistance(), 3);
// handle = tuple.getFactHandle()
mv.visitVarInsn(ALOAD, 3);
invokeInterface(Tuple.class, "getOriginalFactHandle", InternalFactHandle.class);
mv.visitVarInsn(ASTORE, handlePos);
String declarationType = declarations[i].getTypeName();
if (stub.getNotPatterns()[i]) {
// notPattern indexes field declarations
// declarations[i].getValue((InternalWorkingMemory)workingMemory, fact[i].getObject());
// org.kie.rule.Declaration[]
mv.visitVarInsn(ALOAD, 4);
// i
push(i);
// declarations[i]
mv.visitInsn(AALOAD);
// WorkingMemory
mv.visitVarInsn(ALOAD, 2);
cast(InternalWorkingMemory.class);
// handle[i]
mv.visitVarInsn(ALOAD, handlePos);
invokeInterface(InternalFactHandle.class, "getObject", Object.class);
storeObjectFromDeclaration(declarations[i], declarationType);
// The facthandle should be set to that of the field, if it's an object, otherwise this will return null
// fact[i] = (InternalFactHandle)workingMemory.getFactHandle(obj);
mv.visitVarInsn(ALOAD, 2);
loadAsObject(objPos);
invokeInterface(WorkingMemory.class, "getFactHandle", FactHandle.class, Object.class);
cast(InternalFactHandle.class);
mv.visitVarInsn(ASTORE, handlePos);
} else {
// handle[i]
mv.visitVarInsn(ALOAD, handlePos);
invokeInterface(InternalFactHandle.class, "getObject", Object.class);
mv.visitTypeInsn(CHECKCAST, internalName(declarationType));
// obj[i]
objAstorePos += store(objPos, declarationType);
}
}
// @{ruleClassName}.@{methodName}(KnowledgeHelper, @foreach{declr : declarations} Object, FactHandle @end)
StringBuilder consequenceMethodDescr = new StringBuilder("(L" + KnowledgeHelper.class.getName().replace('.', '/') + ";");
// KnowledgeHelper
mv.visitVarInsn(ALOAD, 1);
for (int i = 0; i < declarations.length; i++) {
// obj[i]
load(paramsPos[i] + 1);
// handle[i]
mv.visitVarInsn(ALOAD, paramsPos[i]);
consequenceMethodDescr.append(typeDescr(declarations[i].getTypeName())).append("L" + FactHandle.class.getName().replace('.', '/') + ";");
}
// @foreach{type : globalTypes, identifier : globals} @{type} @{identifier} = ( @{type} ) workingMemory.getGlobal( "@{identifier}" );
parseGlobals(stub.getGlobals(), stub.getGlobalTypes(), 2, consequenceMethodDescr);
consequenceMethodDescr.append(")V");
mv.visitMethodInsn(INVOKESTATIC, stub.getInternalRuleClassName(), stub.getMethodName(), consequenceMethodDescr.toString());
mv.visitInsn(RETURN);
}
});
stub.setConsequence(generator.<Consequence>newInstance());
}
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