Expand double-brace and linked-local route map putAll bindings.

Support putAll from compile-time maps inside anonymous HashMap initializers and add regression coverage for linked locals, mixed put/putAll, and empty inline HashMap fields populated in static blocks.

Co-authored-by: Cursor <cursoragent@cursor.com>

state_machine_exporter/src/main/java/click/kamil/springstatemachineexporter/analysis/service/EntryPointBindingExpander.java

@@ -893,22 +893,39 @@ public final class EntryPointBindingExpander {
             block.accept(new ASTVisitor() {
                 @Override
                 public boolean visit(MethodInvocation node) {
-                    if (invalid[0] || !"put".equals(node.getName().getIdentifier())
-                            || node.arguments().size() != 2) {
+                    if (invalid[0]) {
                         return super.visit(node);
                     }
                     Expression receiver = node.getExpression();
                     if (receiver != null && !(receiver instanceof ThisExpression)) {
                         return super.visit(node);
                     }
-                    String key = resolveCompileTimeStringKey(
-                            (Expression) node.arguments().get(0), declaringType, context);
-                    if (key == null) {
-                        invalid[0] = true;
+                    String methodName = node.getName().getIdentifier();
+                    if ("put".equals(methodName) && node.arguments().size() == 2) {
+                        String key = resolveCompileTimeStringKey(
+                                (Expression) node.arguments().get(0), declaringType, context);
+                        if (key == null) {
+                            invalid[0] = true;
+                            return super.visit(node);
+                        }
+                        entries.put(key, "*");
+                        foundPut[0] = true;
+                        return super.visit(node);
+                    }
+                    if ("putAll".equals(methodName) && node.arguments().size() == 1) {
+                        CompilationUnit compilationUnit = block.getRoot() instanceof CompilationUnit cu
+                                ? cu
+                                : null;
+                        Map<String, String> merged = resolveCompileTimeMapEntries(
+                                (Expression) node.arguments().get(0), declaringType, compilationUnit, context);
+                        if (merged == null || merged.isEmpty()) {
+                            invalid[0] = true;
+                            return super.visit(node);
+                        }
+                        entries.putAll(merged);
+                        foundPut[0] = true;
                         return super.visit(node);
                     }
-                    entries.put(key, "*");
-                    foundPut[0] = true;
                     return super.visit(node);
                 }
             });

state_machine_exporter/src/test/java/click/kamil/springstatemachineexporter/analysis/service/EntryPointBindingExpanderTest.java

@@ -3657,4 +3657,225 @@ class EntryPointBindingExpanderTest {
 
         assertThat(variants).isEmpty();
     }
+
+    @Test
+    void shouldExpandCommandKeyFromStaticBlockLocalPutAllWithMapOf(@TempDir Path tempDir) throws Exception {
+        String source = """
+            package com.example;
+            import java.util.HashMap;
+            import java.util.Map;
+            public class GenericCommandController {
+                OrderGateway gateway;
+                public void execute(String commandKey) {
+                    gateway.trigger(commandKey);
+                }
+            }
+            class OrderGateway {
+                private static final Map<String, OrderEvent> ROUTES;
+                static {
+                    Map<String, OrderEvent> routes = new HashMap<>();
+                    routes.putAll(Map.of(
+                        "order.pay", OrderEvent.PAY,
+                        "order.ship", OrderEvent.SHIP
+                    ));
+                    ROUTES = routes;
+                }
+                void trigger(String commandKey) {
+                    StateMachine sm = new StateMachine();
+                    sm.sendEvent(ROUTES.get(commandKey));
+                }
+            }
+            class StateMachine { void sendEvent(OrderEvent event) {} }
+            enum OrderEvent { PAY, SHIP }
+            """;
+        Files.writeString(tempDir.resolve("App.java"), source);
+
+        CodebaseContext context = new CodebaseContext();
+        context.setResolveBindings(true);
+        context.scan(tempDir);
+
+        HeuristicCallGraphEngine engine = new HeuristicCallGraphEngine(context);
+        Map<String, List<click.kamil.springstatemachineexporter.analysis.model.CallEdge>> graph = engine.buildCallGraph();
+
+        EntryPoint entryPoint = EntryPoint.builder()
+                .className("com.example.GenericCommandController")
+                .methodName("execute")
+                .name("POST /api/commands/{commandKey}")
+                .parameters(List.of(EntryPoint.Parameter.builder()
+                        .name("commandKey")
+                        .type("String")
+                        .annotations(List.of("PathVariable"))
+                        .build()))
+                .build();
+
+        List<Map<String, String>> variants =
+                EntryPointBindingExpander.expandPathVariableBindings(entryPoint, context, graph);
+
+        assertThat(variants).extracting(map -> map.get("commandKey"))
+                .containsExactlyInAnyOrder("order.pay", "order.ship");
+    }
+
+    @Test
+    void shouldExpandCommandKeyFromStaticBlockMixedPutAllAndPutOnLinkedLocal(@TempDir Path tempDir) throws Exception {
+        String source = """
+            package com.example;
+            import java.util.HashMap;
+            import java.util.Map;
+            public class GenericCommandController {
+                OrderGateway gateway;
+                public void execute(String commandKey) {
+                    gateway.trigger(commandKey);
+                }
+            }
+            class OrderGateway {
+                private static final Map<String, OrderEvent> ROUTES;
+                static {
+                    Map<String, OrderEvent> routes = new HashMap<>();
+                    routes.putAll(Map.of("order.pay", OrderEvent.PAY));
+                    routes.put("order.ship", OrderEvent.SHIP);
+                    ROUTES = routes;
+                }
+                void trigger(String commandKey) {
+                    StateMachine sm = new StateMachine();
+                    sm.sendEvent(ROUTES.get(commandKey));
+                }
+            }
+            class StateMachine { void sendEvent(OrderEvent event) {} }
+            enum OrderEvent { PAY, SHIP }
+            """;
+        Files.writeString(tempDir.resolve("App.java"), source);
+
+        CodebaseContext context = new CodebaseContext();
+        context.setResolveBindings(true);
+        context.scan(tempDir);
+
+        HeuristicCallGraphEngine engine = new HeuristicCallGraphEngine(context);
+        Map<String, List<click.kamil.springstatemachineexporter.analysis.model.CallEdge>> graph = engine.buildCallGraph();
+
+        EntryPoint entryPoint = EntryPoint.builder()
+                .className("com.example.GenericCommandController")
+                .methodName("execute")
+                .name("POST /api/commands/{commandKey}")
+                .parameters(List.of(EntryPoint.Parameter.builder()
+                        .name("commandKey")
+                        .type("String")
+                        .annotations(List.of("PathVariable"))
+                        .build()))
+                .build();
+
+        List<Map<String, String>> variants =
+                EntryPointBindingExpander.expandPathVariableBindings(entryPoint, context, graph);
+
+        assertThat(variants).extracting(map -> map.get("commandKey"))
+                .containsExactlyInAnyOrder("order.pay", "order.ship");
+    }
+
+    @Test
+    void shouldExpandCommandKeyFromDoubleBraceInitializerPutAllWithMapOf(@TempDir Path tempDir) throws Exception {
+        String source = """
+            package com.example;
+            import java.util.HashMap;
+            import java.util.Map;
+            public class GenericCommandController {
+                OrderGateway gateway;
+                public void execute(String commandKey) {
+                    gateway.trigger(commandKey);
+                }
+            }
+            class OrderGateway {
+                private static final Map<String, OrderEvent> ROUTES = new HashMap<>() {{
+                    putAll(Map.of(
+                        "order.pay", OrderEvent.PAY,
+                        "order.ship", OrderEvent.SHIP
+                    ));
+                }};
+                void trigger(String commandKey) {
+                    StateMachine sm = new StateMachine();
+                    sm.sendEvent(ROUTES.get(commandKey));
+                }
+            }
+            class StateMachine { void sendEvent(OrderEvent event) {} }
+            enum OrderEvent { PAY, SHIP }
+            """;
+        Files.writeString(tempDir.resolve("App.java"), source);
+
+        CodebaseContext context = new CodebaseContext();
+        context.setResolveBindings(true);
+        context.scan(tempDir);
+
+        HeuristicCallGraphEngine engine = new HeuristicCallGraphEngine(context);
+        Map<String, List<click.kamil.springstatemachineexporter.analysis.model.CallEdge>> graph = engine.buildCallGraph();
+
+        EntryPoint entryPoint = EntryPoint.builder()
+                .className("com.example.GenericCommandController")
+                .methodName("execute")
+                .name("POST /api/commands/{commandKey}")
+                .parameters(List.of(EntryPoint.Parameter.builder()
+                        .name("commandKey")
+                        .type("String")
+                        .annotations(List.of("PathVariable"))
+                        .build()))
+                .build();
+
+        List<Map<String, String>> variants =
+                EntryPointBindingExpander.expandPathVariableBindings(entryPoint, context, graph);
+
+        assertThat(variants).extracting(map -> map.get("commandKey"))
+                .containsExactlyInAnyOrder("order.pay", "order.ship");
+    }
+
+    @Test
+    void shouldExpandCommandKeyFromInlineEmptyHashMapWithStaticBlockPutAll(@TempDir Path tempDir) throws Exception {
+        String source = """
+            package com.example;
+            import java.util.HashMap;
+            import java.util.Map;
+            public class GenericCommandController {
+                OrderGateway gateway;
+                public void execute(String commandKey) {
+                    gateway.trigger(commandKey);
+                }
+            }
+            class OrderGateway {
+                private static final Map<String, OrderEvent> ROUTES = new HashMap<>();
+                static {
+                    ROUTES.putAll(Map.of(
+                        "order.pay", OrderEvent.PAY,
+                        "order.ship", OrderEvent.SHIP
+                    ));
+                }
+                void trigger(String commandKey) {
+                    StateMachine sm = new StateMachine();
+                    sm.sendEvent(ROUTES.get(commandKey));
+                }
+            }
+            class StateMachine { void sendEvent(OrderEvent event) {} }
+            enum OrderEvent { PAY, SHIP }
+            """;
+        Files.writeString(tempDir.resolve("App.java"), source);
+
+        CodebaseContext context = new CodebaseContext();
+        context.setResolveBindings(true);
+        context.scan(tempDir);
+
+        HeuristicCallGraphEngine engine = new HeuristicCallGraphEngine(context);
+        Map<String, List<click.kamil.springstatemachineexporter.analysis.model.CallEdge>> graph = engine.buildCallGraph();
+
+        EntryPoint entryPoint = EntryPoint.builder()
+                .className("com.example.GenericCommandController")
+                .methodName("execute")
+                .name("POST /api/commands/{commandKey}")
+                .parameters(List.of(EntryPoint.Parameter.builder()
+                        .name("commandKey")
+                        .type("String")
+                        .annotations(List.of("PathVariable"))
+                        .build()))
+                .build();
+
+        List<Map<String, String>> variants =
+                EntryPointBindingExpander.expandPathVariableBindings(entryPoint, context, graph);
+
+        assertThat(variants).extracting(map -> map.get("commandKey"))
+                .containsExactlyInAnyOrder("order.pay", "order.ship");
+    }
 }