tiny/spring-state-machine-renderer
0
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

updated

Browse Source
This commit is contained in:
Kamil Patryk Kozakowski
2026-06-06 20:58:34 +02:00
parent 38f960dc55
commit 3c70d75d92
8 changed files with 568 additions and 161 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
state_machine_exporter/src/main/java/click/kamil/springstatemachineexporter/Main.java
View File

@@ -92,7 +92,7 @@ public class Main {
if (!methodsWithReturnType.isEmpty()) {
for (MethodDeclaration m : methodsWithReturnType) {
System.out.println("Found method returning StateMachine in: " + javaFile.toAbsolutePath());
List<Transition> transitions = AstTransitionParser.parseTransitions2(m);
List<Transition> transitions = AstTransitionParser.parseTransitions(m);
Set<String> startStatesTransitions = TransitionStateUtils.findStartStates(transitions);
Set<String> endStatesTransitions = TransitionStateUtils.findEndStates(transitions);

120
state_machine_exporter/src/main/java/click/kamil/springstatemachineexporter/ast/app/AstTransitionParser.java
View File

@@ -3,55 +3,36 @@ package click.kamil.springstatemachineexporter.ast.app;
import click.kamil.springstatemachineexporter.ast.app.domain.Transition;
import org.eclipse.jdt.core.dom.*;
import java.util.ArrayList;
import java.util.List;
import java.util.Optional;
import java.util.Set;
import java.util.*;
public class AstTransitionParser {
private static final Set<String> SUPPORTED_TRANSITION_TYPES = Set.of(
"withExternal", "withInternal", "withLocal", "withFork", "withJoin", "withChoice", "withJunction"
);
public static List<Transition> parseTransitions(MethodDeclaration method) {
List<Transition> transitions = new ArrayList<>();
Optional.ofNullable(method)
.map(MethodDeclaration::getBody)
.ifPresent(body -> {
for (Object stmt : body.statements()) {
if (stmt instanceof ExpressionStatement es
&& es.getExpression() instanceof MethodInvocation mi) {
transitions.addAll(parseTransitionsFromExpression(mi));
}
}
});
return transitions;
}
public static List<Transition> parseTransitions2(MethodDeclaration method) {
if (method == null) return Collections.emptyList();
List<Transition> transitions = new ArrayList<>();
Optional.ofNullable(method)
.map(MethodDeclaration::getBody)
.ifPresent(body -> {
for (Object stmtObj : body.statements()) {
if (stmtObj instanceof ExpressionStatement es
&& es.getExpression() instanceof MethodInvocation mi) {
method.accept(new ASTVisitor() {
@Override
public boolean visit(MethodInvocation node) {
if (isEntryPoint(node)) {
transitions.addAll(parseTransitionsFromExpression(node, new HashMap<>()));
}
return super.visit(node);
}
// recursively collect all method invocations in this chain
List<MethodInvocation> chain = collectMethodInvocationChain(mi);
// Find the index of `configureTransitions` in the chain
for (int i = 0; i < chain.size(); i++) {
MethodInvocation current = chain.get(i);
if (current.getName().getIdentifier().equals("configureTransitions")) {
List<MethodInvocation> afterConfigure = chain.subList(i + 1, chain.size());
transitions.addAll(parseTransitionsFromExpression(afterConfigure.getLast()));
break;
}
}
}
}
});
private boolean isEntryPoint(MethodInvocation node) {
// Check if this call is part of a larger chain already handled
if (node.getParent() instanceof MethodInvocation) {
return false;
}
List<MethodInvocation> chain = collectMethodInvocationChain(node);
return chain.stream().anyMatch(mi -> SUPPORTED_TRANSITION_TYPES.contains(mi.getName().getIdentifier()));
}
});
return transitions;
}
@@ -74,7 +55,7 @@ public class AstTransitionParser {
return chain;
}
public static List<Transition> parseTransitionsFromExpression(MethodInvocation rootCall) {
public static List<Transition> parseTransitionsFromExpression(MethodInvocation rootCall, Map<String, Expression> argsMap) {
List<Transition> transitions = new ArrayList<>();
// Step 1: Unroll method chain
@@ -106,16 +87,16 @@ public class AstTransitionParser {
boolean isJunction = segment.stream().anyMatch(mi -> "withJunction".equals(mi.getName().getIdentifier()));
if (isChoice || isJunction) {
transitions.addAll(parseChoiceOrJunctionTransitions(segment, isChoice ? "withChoice" : "withJunction"));
transitions.addAll(parseChoiceOrJunctionTransitions(segment, isChoice ? "withChoice" : "withJunction", argsMap));
} else {
transitions.add(parseStandardTransition(segment));
transitions.add(parseStandardTransition(segment, argsMap));
}
}
return transitions;
}
private static List<Transition> parseChoiceOrJunctionTransitions(List<MethodInvocation> segment, String type) {
private static List<Transition> parseChoiceOrJunctionTransitions(List<MethodInvocation> segment, String type, Map<String, Expression> argsMap) {
List<Transition> transitions = new ArrayList<>();
String sourceState = null;
int orderCounter = 0;
@@ -123,7 +104,8 @@ public class AstTransitionParser {
// Extract source state once
for (MethodInvocation call : segment) {
if ("source".equals(call.getName().getIdentifier()) && !call.arguments().isEmpty()) {
sourceState = QuotedExpression.of(call.arguments().getFirst()).toStringWithoutQuotes();
Expression arg = resolveArg((Expression) call.arguments().get(0), argsMap);
sourceState = QuotedExpression.of(arg).toStringWithoutQuotes();
break; // only take the first occurrence
}
}
@@ -139,18 +121,23 @@ public class AstTransitionParser {
if (sourceState != null) {
t.getSourceStates().add(sourceState);
}
t.getTargetStates().add(QuotedExpression.of(args.get(0)).toStringWithoutQuotes());
Expression targetArg = resolveArg((Expression) args.get(0), argsMap);
t.getTargetStates().add(QuotedExpression.of(targetArg).toStringWithoutQuotes());
if (args.size() > 1) {
Expression secondArg = resolveArg((Expression) args.get(1), argsMap);
if ("last".equals(methodName)) {
// For 'last', the second argument is an action, not a guard
parseAction(args.get(1), t);
parseAction(secondArg, t);
} else {
// For 'first' and 'then', the second argument is a guard
parseGuard(args.get(1), t);
parseGuard(secondArg, t);
}
}
if (args.size() > 2) {
parseAction(args.get(2), t);
Expression thirdArg = resolveArg((Expression) args.get(2), argsMap);
parseAction(thirdArg, t);
}
t.setOrder(orderCounter++);
transitions.add(t);
@@ -159,7 +146,7 @@ public class AstTransitionParser {
}
private static Transition parseStandardTransition(List<MethodInvocation> segment) {
private static Transition parseStandardTransition(List<MethodInvocation> segment, Map<String, Expression> argsMap) {
Transition t = new Transition();
for (MethodInvocation call : segment) {
String methodName = call.getName().getIdentifier();
@@ -174,11 +161,26 @@ public class AstTransitionParser {
}
switch (methodName) {
case "source" -> args.forEach(arg -> t.getSourceStates().add(QuotedExpression.of(arg).toStringWithoutQuotes()));
case "target" -> args.forEach(arg -> t.getTargetStates().add(QuotedExpression.of(arg).toStringWithoutQuotes()));
case "event" -> t.setEvent(QuotedExpression.of(args.getFirst()).toStringWithoutQuotes());
case "guard" -> parseGuard(args.getFirst(), t);
case "action" -> parseAction(args.getFirst(), t);
case "source" -> args.forEach(arg -> {
Expression resolved = resolveArg((Expression) arg, argsMap);
t.getSourceStates().add(QuotedExpression.of(resolved).toStringWithoutQuotes());
});
case "target" -> args.forEach(arg -> {
Expression resolved = resolveArg((Expression) arg, argsMap);
t.getTargetStates().add(QuotedExpression.of(resolved).toStringWithoutQuotes());
});
case "event" -> {
Expression resolved = resolveArg((Expression) args.get(0), argsMap);
t.setEvent(QuotedExpression.of(resolved).toStringWithoutQuotes());
}
case "guard" -> {
Expression resolved = resolveArg((Expression) args.get(0), argsMap);
parseGuard(resolved, t);
}
case "action" -> {
Expression resolved = resolveArg((Expression) args.get(0), argsMap);
parseAction(resolved, t);
}
}
}
return t;
@@ -200,6 +202,14 @@ public class AstTransitionParser {
}
}
private static Expression resolveArg(Expression expr, Map<String, Expression> argsMap) {
if (expr instanceof SimpleName sn) {
Expression resolved = argsMap.get(sn.getIdentifier());
if (resolved != null) return resolved;
}
return expr;
}
public static boolean isLambdaOrAnonymous(Expression expr) {
return switch (expr) {
case null -> false;
@@ -208,4 +218,4 @@ public class AstTransitionParser {
default -> false;
};
}
}
}

294
state_machine_exporter/src/main/java/click/kamil/springstatemachineexporter/ast/app/StateMachineAggregator.java
View File

@@ -15,33 +15,30 @@ public class StateMachineAggregator {
public List<Transition> aggregateTransitions(TypeDeclaration startClass) {
List<Transition> allTransitions = new ArrayList<>();
Set<String> visitedClasses = new HashSet<>();
aggregateTransitionsRecursive(startClass, startClass, allTransitions, visitedClasses, new HashSet<>());
aggregateTransitionsRecursive(startClass, startClass, allTransitions, new HashSet<>(), new HashSet<>(), new HashMap<>());
return allTransitions;
}
private void aggregateTransitionsRecursive(TypeDeclaration currentTd, TypeDeclaration searchStartClass, List<Transition> allTransitions, Set<String> visitedClasses, Set<MethodDeclaration> visitedMethods) {
private void aggregateTransitionsRecursive(TypeDeclaration currentTd, TypeDeclaration searchStartClass, List<Transition> allTransitions, Set<String> visitedClasses, Set<MethodDeclaration> visitedMethods, Map<String, Object> argsMap) {
if (currentTd == null || visitedClasses.contains(currentTd.getName().getFullyQualifiedName())) return;
visitedClasses.add(currentTd.getName().getFullyQualifiedName());
// Process this class
MethodDeclaration configureMethod = findConfigureTransitionsMethod(currentTd);
if (configureMethod != null) {
allTransitions.addAll(parseTransitionsWithMethodCalls(configureMethod, searchStartClass, visitedMethods));
allTransitions.addAll(parseTransitionsWithMethodCalls(configureMethod, searchStartClass, visitedMethods, argsMap));
}
// Process superclass
Type superclassType = currentTd.getSuperclassType();
if (superclassType != null) {
String superclassName = getSimpleName(superclassType);
TypeDeclaration superclassTd = context.getTypeDeclaration(superclassName);
if (superclassTd != null) {
aggregateTransitionsRecursive(superclassTd, searchStartClass, allTransitions, visitedClasses, visitedMethods);
aggregateTransitionsRecursive(superclassTd, searchStartClass, allTransitions, visitedClasses, visitedMethods, argsMap);
}
}
}
private List<Transition> parseTransitionsWithMethodCalls(MethodDeclaration method, TypeDeclaration searchStartClass, Set<MethodDeclaration> visitedMethods) {
private List<Transition> parseTransitionsWithMethodCalls(MethodDeclaration method, TypeDeclaration searchStartClass, Set<MethodDeclaration> visitedMethods, Map<String, Object> argsMap) {
List<Transition> transitions = new ArrayList<>();
if (visitedMethods.contains(method)) return transitions;
visitedMethods.add(method);
@@ -50,51 +47,190 @@ public class StateMachineAggregator {
if (body == null) return transitions;
for (Object stmt : body.statements()) {
Expression expr = null;
if (stmt instanceof ExpressionStatement es) {
expr = es.getExpression();
transitions.addAll(parseTransitionsInExpression(es.getExpression(), searchStartClass, visitedMethods, argsMap));
} else if (stmt instanceof VariableDeclarationStatement vds) {
for (Object fragmentObj : vds.fragments()) {
if (fragmentObj instanceof VariableDeclarationFragment fragment) {
expr = fragment.getInitializer();
transitions.addAll(parseTransitionsInExpression(fragment.getInitializer(), searchStartClass, visitedMethods, argsMap));
}
}
} else if (stmt instanceof EnhancedForStatement efs) {
transitions.addAll(parseEnhancedForLoop(efs, searchStartClass, visitedMethods, argsMap, true, null, null));
}
}
return transitions;
}
if (expr instanceof MethodInvocation mi) {
if (isTransitionChain(mi)) {
transitions.addAll(AstTransitionParser.parseTransitionsFromExpression(mi));
} else {
// Possible method call to follow
MethodDeclaration calledMethod = findMethodInHierarchy(mi.getName().getIdentifier(), searchStartClass);
if (calledMethod != null && isRelevantMethod(calledMethod)) {
transitions.addAll(parseTransitionsWithMethodCalls(calledMethod, searchStartClass, visitedMethods));
}
private List<Transition> parseTransitionsInExpression(Expression expr, TypeDeclaration searchStartClass, Set<MethodDeclaration> visitedMethods, Map<String, Object> argsMap) {
List<Transition> transitions = new ArrayList<>();
if (expr instanceof MethodInvocation mi) {
if (isTransitionChain(mi)) {
transitions.addAll(AstTransitionParser.parseTransitionsFromExpression(mi, convertToExpressionMap(argsMap)));
} else if (isForEach(mi)) {
transitions.addAll(parseForEach(mi, searchStartClass, visitedMethods, argsMap, true, null, null));
} else {
MethodDeclaration calledMethod = findMethodInHierarchy(mi.getName().getIdentifier(), searchStartClass);
if (calledMethod != null) {
Map<String, Object> nextArgsMap = buildArgsMap(calledMethod, mi, argsMap);
transitions.addAll(parseTransitionsWithMethodCalls(calledMethod, searchStartClass, visitedMethods, nextArgsMap));
}
}
}
return transitions;
}
private boolean isForEach(MethodInvocation mi) {
return mi.getName().getIdentifier().equals("forEach");
}
private List<Transition> parseForEach(MethodInvocation forEachMi, TypeDeclaration searchStartClass, Set<MethodDeclaration> visitedMethods, Map<String, Object> argsMap, boolean isTransitions, Set<String> initialStates, Set<String> endStates) {
List<Transition> transitions = new ArrayList<>();
Expression receiver = forEachMi.getExpression();
List<Expression> elements = unrollCollection(receiver, argsMap);
if (elements.isEmpty() || forEachMi.arguments().isEmpty()) return transitions;
Object lambdaObj = forEachMi.arguments().get(0);
if (lambdaObj instanceof LambdaExpression lambda) {
String paramName = getLambdaParamName(lambda);
for (Expression element : elements) {
Map<String, Object> lambdaArgsMap = new HashMap<>(argsMap);
if (!paramName.isEmpty()) lambdaArgsMap.put(paramName, element);
if (isTransitions) {
if (lambda.getBody() instanceof Block block) transitions.addAll(parseTransitionsInBlock(block, searchStartClass, visitedMethods, lambdaArgsMap));
else if (lambda.getBody() instanceof Expression lambdaExpr) transitions.addAll(parseTransitionsInExpression(lambdaExpr, searchStartClass, visitedMethods, lambdaArgsMap));
} else {
if (lambda.getBody() instanceof Block block) parseStatesInBlock(block, searchStartClass, initialStates, endStates, visitedMethods, lambdaArgsMap);
else if (lambda.getBody() instanceof Expression lambdaExpr) parseStatesInExpression(lambdaExpr, searchStartClass, initialStates, endStates, visitedMethods, lambdaArgsMap);
}
}
}
return transitions;
}
private List<Transition> parseEnhancedForLoop(EnhancedForStatement efs, TypeDeclaration searchStartClass, Set<MethodDeclaration> visitedMethods, Map<String, Object> argsMap, boolean isTransitions, Set<String> initialStates, Set<String> endStates) {
List<Transition> transitions = new ArrayList<>();
List<Expression> elements = unrollCollection(efs.getExpression(), argsMap);
String paramName = efs.getParameter().getName().getIdentifier();
for (Expression element : elements) {
Map<String, Object> loopArgsMap = new HashMap<>(argsMap);
loopArgsMap.put(paramName, element);
if (isTransitions) {
if (efs.getBody() instanceof Block block) transitions.addAll(parseTransitionsInBlock(block, searchStartClass, visitedMethods, loopArgsMap));
else if (efs.getBody() instanceof ExpressionStatement es) transitions.addAll(parseTransitionsInExpression(es.getExpression(), searchStartClass, visitedMethods, loopArgsMap));
} else {
if (efs.getBody() instanceof Block block) parseStatesInBlock(block, searchStartClass, initialStates, endStates, visitedMethods, loopArgsMap);
else if (efs.getBody() instanceof ExpressionStatement es) parseStatesInExpression(es.getExpression(), searchStartClass, initialStates, endStates, visitedMethods, loopArgsMap);
}
}
return transitions;
}
private List<Expression> unrollCollection(Expression expr, Map<String, Object> argsMap) {
if (expr instanceof MethodInvocation mi) {
String name = mi.getName().getIdentifier();
Expression receiver = mi.getExpression();
if ((name.equals("of") && receiver != null && (receiver.toString().equals("Stream") || receiver.toString().equals("List")))
|| (name.equals("asList") && receiver != null && receiver.toString().equals("Arrays"))) {
return (List<Expression>) mi.arguments();
}
}
if (expr instanceof SimpleName sn) {
Object resolved = argsMap.get(sn.getIdentifier());
if (resolved instanceof List list) return (List<Expression>) list;
if (resolved instanceof Expression e) return unrollCollection(e, argsMap);
}
if (expr instanceof ArrayInitializer ai) return (List<Expression>) ai.expressions();
return Collections.emptyList();
}
private String getLambdaParamName(LambdaExpression lambda) {
if (lambda.parameters().size() == 1) {
Object p = lambda.parameters().get(0);
if (p instanceof VariableDeclaration vp) return vp.getName().getIdentifier();
}
return "";
}
private List<Transition> parseTransitionsInBlock(Block block, TypeDeclaration searchStartClass, Set<MethodDeclaration> visitedMethods, Map<String, Object> argsMap) {
List<Transition> transitions = new ArrayList<>();
for (Object stmt : block.statements()) {
if (stmt instanceof ExpressionStatement es) transitions.addAll(parseTransitionsInExpression(es.getExpression(), searchStartClass, visitedMethods, argsMap));
else if (stmt instanceof EnhancedForStatement efs) transitions.addAll(parseEnhancedForLoop(efs, searchStartClass, visitedMethods, argsMap, true, null, null));
}
return transitions;
}
private void parseStatesInBlock(Block block, TypeDeclaration searchStartClass, Set<String> initialStates, Set<String> endStates, Set<MethodDeclaration> visitedMethods, Map<String, Object> argsMap) {
for (Object stmt : block.statements()) {
if (stmt instanceof ExpressionStatement es) parseStatesInExpression(es.getExpression(), searchStartClass, initialStates, endStates, visitedMethods, argsMap);
else if (stmt instanceof EnhancedForStatement efs) parseEnhancedForLoop(efs, searchStartClass, visitedMethods, argsMap, false, initialStates, endStates);
}
}
private void parseStatesInExpression(Expression expr, TypeDeclaration searchStartClass, Set<String> initialStates, Set<String> endStates, Set<MethodDeclaration> visitedMethods, Map<String, Object> argsMap) {
if (expr instanceof MethodInvocation mi) {
if (isWithStatesChain(mi)) parseStateChain(mi, initialStates, endStates, argsMap);
else if (isForEach(mi)) parseForEach(mi, searchStartClass, visitedMethods, argsMap, false, initialStates, endStates);
else {
MethodDeclaration calledMethod = findMethodInHierarchy(mi.getName().getIdentifier(), searchStartClass);
if (calledMethod != null) {
Map<String, Object> nextArgsMap = buildArgsMap(calledMethod, mi, argsMap);
parseStatesWithMethodCalls(calledMethod, searchStartClass, initialStates, endStates, visitedMethods, nextArgsMap);
}
}
}
}
private Map<String, Object> buildArgsMap(MethodDeclaration method, MethodInvocation call, Map<String, Object> currentArgsMap) {
Map<String, Object> map = new HashMap<>();
List<?> params = method.parameters();
List<?> args = call.arguments();
for (int i = 0; i < params.size(); i++) {
SingleVariableDeclaration param = (SingleVariableDeclaration) params.get(i);
String paramName = param.getName().getIdentifier();
if (param.isVarargs() && i < params.size()) {
List<Expression> varargList = new ArrayList<>();
for (int j = i; j < args.size(); j++) {
varargList.add(resolveExpression((Expression) args.get(j), currentArgsMap));
}
map.put(paramName, varargList);
} else if (i < args.size()) {
map.put(paramName, resolveExpression((Expression) args.get(i), currentArgsMap));
}
}
return map;
}
private Expression resolveExpression(Expression expr, Map<String, Object> argsMap) {
if (expr instanceof SimpleName sn) {
Object resolved = argsMap.get(sn.getIdentifier());
if (resolved instanceof Expression e) return e;
}
return expr;
}
private Map<String, Expression> convertToExpressionMap(Map<String, Object> argsMap) {
Map<String, Expression> map = new HashMap<>();
for (Map.Entry<String, Object> entry : argsMap.entrySet()) {
if (entry.getValue() instanceof Expression e) map.put(entry.getKey(), e);
}
return map;
}
private boolean isTransitionChain(MethodInvocation mi) {
String name = mi.getName().getIdentifier();
if (Set.of("withExternal", "withInternal", "withLocal", "withFork", "withJoin", "withChoice", "withJunction").contains(name)) {
return true;
}
Expression expr = mi.getExpression();
if (expr instanceof MethodInvocation next) {
return isTransitionChain(next);
}
return false;
if (Set.of("withExternal", "withInternal", "withLocal", "withFork", "withJoin", "withChoice", "withJunction").contains(name)) return true;
return mi.getExpression() instanceof MethodInvocation next && isTransitionChain(next);
}
private MethodDeclaration findMethodInHierarchy(String methodName, TypeDeclaration td) {
if (td == null) return null;
for (MethodDeclaration method : td.getMethods()) {
if (method.getName().getIdentifier().equals(methodName)) {
return method;
}
}
for (MethodDeclaration method : td.getMethods()) if (method.getName().getIdentifier().equals(methodName)) return method;
Type superclassType = td.getSuperclassType();
if (superclassType != null) {
TypeDeclaration superclassTd = context.getTypeDeclaration(getSimpleName(superclassType));
@@ -103,89 +239,58 @@ public class StateMachineAggregator {
return null;
}
private boolean isRelevantMethod(MethodDeclaration method) {
return true;
}
private boolean isRelevantMethod(MethodDeclaration method) { return true; }
private MethodDeclaration findConfigureTransitionsMethod(TypeDeclaration td) {
for (MethodDeclaration method : td.getMethods()) {
if (isConfigureTransitionsMethod(method)) return method;
}
for (MethodDeclaration method : td.getMethods()) if (isConfigureTransitionsMethod(method)) return method;
return null;
}
private boolean isConfigureTransitionsMethod(MethodDeclaration method) {
if (!method.getName().getIdentifier().equals("configure")) return false;
List<?> params = method.parameters();
if (params.size() != 1) return false;
SingleVariableDeclaration param = (SingleVariableDeclaration) params.get(0);
String typeName = param.getType().toString();
return typeName.startsWith("StateMachineTransitionConfigurer");
if (!method.getName().getIdentifier().equals("configure") || method.parameters().size() != 1) return false;
return ((SingleVariableDeclaration) method.parameters().get(0)).getType().toString().startsWith("StateMachineTransitionConfigurer");
}
public void aggregateStates(TypeDeclaration startClass, Set<String> initialStates, Set<String> endStates) {
Set<String> visitedClasses = new HashSet<>();
aggregateStatesRecursive(startClass, startClass, initialStates, endStates, visitedClasses, new HashSet<>());
aggregateStatesRecursive(startClass, startClass, initialStates, endStates, new HashSet<>(), new HashSet<>(), new HashMap<>());
}
private void aggregateStatesRecursive(TypeDeclaration currentTd, TypeDeclaration searchStartClass, Set<String> initialStates, Set<String> endStates, Set<String> visitedClasses, Set<MethodDeclaration> visitedMethods) {
private void aggregateStatesRecursive(TypeDeclaration currentTd, TypeDeclaration searchStartClass, Set<String> initialStates, Set<String> endStates, Set<String> visitedClasses, Set<MethodDeclaration> visitedMethods, Map<String, Object> argsMap) {
if (currentTd == null || visitedClasses.contains(currentTd.getName().getFullyQualifiedName())) return;
visitedClasses.add(currentTd.getName().getFullyQualifiedName());
MethodDeclaration configureMethod = findConfigureStatesMethod(currentTd);
if (configureMethod != null) {
parseStatesWithMethodCalls(configureMethod, searchStartClass, initialStates, endStates, visitedMethods);
}
if (configureMethod != null) parseStatesWithMethodCalls(configureMethod, searchStartClass, initialStates, endStates, visitedMethods, argsMap);
Type superclassType = currentTd.getSuperclassType();
if (superclassType != null) {
TypeDeclaration superclassTd = context.getTypeDeclaration(getSimpleName(superclassType));
if (superclassTd != null) {
aggregateStatesRecursive(superclassTd, searchStartClass, initialStates, endStates, visitedClasses, visitedMethods);
}
if (superclassTd != null) aggregateStatesRecursive(superclassTd, searchStartClass, initialStates, endStates, visitedClasses, visitedMethods, argsMap);
}
}
private void parseStatesWithMethodCalls(MethodDeclaration method, TypeDeclaration searchStartClass, Set<String> initialStates, Set<String> endStates, Set<MethodDeclaration> visitedMethods) {
private void parseStatesWithMethodCalls(MethodDeclaration method, TypeDeclaration searchStartClass, Set<String> initialStates, Set<String> endStates, Set<MethodDeclaration> visitedMethods, Map<String, Object> argsMap) {
if (visitedMethods.contains(method)) return;
visitedMethods.add(method);
Block body = method.getBody();
if (body == null) return;
for (Object stmt : body.statements()) {
Expression expr = null;
if (stmt instanceof ExpressionStatement es) {
expr = es.getExpression();
} else if (stmt instanceof VariableDeclarationStatement vds) {
if (stmt instanceof ExpressionStatement es) parseStatesInExpression(es.getExpression(), searchStartClass, initialStates, endStates, visitedMethods, argsMap);
else if (stmt instanceof VariableDeclarationStatement vds) {
for (Object fragmentObj : vds.fragments()) {
if (fragmentObj instanceof VariableDeclarationFragment fragment) {
expr = fragment.getInitializer();
}
if (fragmentObj instanceof VariableDeclarationFragment fragment) parseStatesInExpression(fragment.getInitializer(), searchStartClass, initialStates, endStates, visitedMethods, argsMap);
}
}
if (expr instanceof MethodInvocation mi) {
if (isWithStatesChain(mi)) {
parseStateChain(mi, initialStates, endStates);
} else {
MethodDeclaration calledMethod = findMethodInHierarchy(mi.getName().getIdentifier(), searchStartClass);
if (calledMethod != null) {
parseStatesWithMethodCalls(calledMethod, searchStartClass, initialStates, endStates, visitedMethods);
}
}
}
} else if (stmt instanceof EnhancedForStatement efs) parseEnhancedForLoop(efs, searchStartClass, visitedMethods, argsMap, false, initialStates, endStates);
}
}
private boolean isWithStatesChain(MethodInvocation mi) {
if (mi.getName().getIdentifier().equals("withStates")) return true;
Expression expr = mi.getExpression();
if (expr instanceof MethodInvocation next) return isWithStatesChain(next);
return false;
return mi.getExpression() instanceof MethodInvocation next && isWithStatesChain(next);
}
private void parseStateChain(MethodInvocation mi, Set<String> initialStates, Set<String> endStates) {
private void parseStateChain(MethodInvocation mi, Set<String> initialStates, Set<String> endStates, Map<String, Object> argsMap) {
List<MethodInvocation> chain = new ArrayList<>();
Expression current = mi;
while (current instanceof MethodInvocation m) {
@@ -194,45 +299,30 @@ public class StateMachineAggregator {
}
for (MethodInvocation call : chain) {
String methodName = call.getName().getIdentifier();
List<?> args = call.arguments();
if (args.isEmpty()) continue;
Expression arg = (Expression) args.get(0);
if ("initial".equals(methodName)) {
if (!isInsideRegionOrFork(call)) {
initialStates.add(QuotedExpression.of(arg).toStringWithoutQuotes());
}
} else if ("end".equals(methodName)) {
endStates.add(QuotedExpression.of(arg).toStringWithoutQuotes());
}
if (call.arguments().isEmpty()) continue;
Expression arg = resolveExpression((Expression) call.arguments().get(0), argsMap);
if ("initial".equals(methodName)) { if (!isInsideRegionOrFork(call)) initialStates.add(QuotedExpression.of(arg).toStringWithoutQuotes()); }
else if ("end".equals(methodName)) endStates.add(QuotedExpression.of(arg).toStringWithoutQuotes());
}
}
private boolean isInsideRegionOrFork(MethodInvocation mi) {
Expression expr = mi.getExpression();
while (expr instanceof MethodInvocation parent) {
String methodName = parent.getName().getIdentifier();
if (List.of("fork", "region").contains(methodName)) {
return true;
}
if (List.of("fork", "region").contains(parent.getName().getIdentifier())) return true;
expr = parent.getExpression();
}
return false;
}
private MethodDeclaration findConfigureStatesMethod(TypeDeclaration td) {
for (MethodDeclaration method : td.getMethods()) {
if (isConfigureStatesMethod(method)) return method;
}
for (MethodDeclaration method : td.getMethods()) if (isConfigureStatesMethod(method)) return method;
return null;
}
private boolean isConfigureStatesMethod(MethodDeclaration method) {
if (!method.getName().getIdentifier().equals("configure")) return false;
List<?> params = method.parameters();
if (params.size() != 1) return false;
SingleVariableDeclaration param = (SingleVariableDeclaration) params.get(0);
String typeName = param.getType().toString();
return typeName.startsWith("StateMachineStateConfigurer");
if (!method.getName().getIdentifier().equals("configure") || method.parameters().size() != 1) return false;
return ((SingleVariableDeclaration) method.parameters().get(0)).getType().toString().startsWith("StateMachineStateConfigurer");
}
private String getSimpleName(Type type) {