Start refactoring dependency checker to make it partially incremental

teavm-core/src/main/java/org/teavm/dependency/DependencyGraphBuilder.java

@@ -259,9 +259,8 @@ class DependencyGraphBuilder {
         @Override
         public void stringConstant(VariableReader receiver, String cst) {
             useRunners.add(new TypePropagationRunner(nodes[receiver.getIndex()], "java.lang.String"));
-            MethodDependency method = dependencyChecker.linkMethod(new MethodReference("java.lang.String",
+            MethodDependency method = dependencyChecker.linkMethod(new MethodReference(String.class,
-                    new MethodDescriptor("<init>", ValueType.arrayOf(ValueType.CHARACTER), ValueType.VOID)),
+                    "<init>", char.class, void.class), callerStack);
-                    callerStack);
             method.use();
         }
 

teavm-core/src/main/java/org/teavm/dependency/DependencyGraphCreator.java

@@ -0,0 +1,24 @@
+/*
+ *  Copyright 2014 Alexey Andreev.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.teavm.dependency;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public interface DependencyGraphCreator {
+    DependencyGraphCreatorProduct createDependency(DependencyChecker checker, DependencyStack stack);
+}

teavm-core/src/main/java/org/teavm/dependency/DependencyGraphCreatorProduct.java

@@ -0,0 +1,27 @@
+/*
+ *  Copyright 2014 Alexey Andreev.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.teavm.dependency;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public class DependencyGraphCreatorProduct {
+    public DependencyNode[] variableNodes;
+    public DependencyNode resultNode;
+    public DependencyNode thrownNode;
+    public Runnable[] deferredActions;
+}

teavm-core/src/main/java/org/teavm/dependency/DependencyGraphCreatorProvider.java

@@ -0,0 +1,26 @@
+/*
+ *  Copyright 2014 Alexey Andreev.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.teavm.dependency;
+
+import org.teavm.model.MethodReference;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public interface DependencyGraphCreatorProvider {
+    DependencyGraphCreator get(MethodReference method);
+}

teavm-core/src/main/java/org/teavm/dependency/ProgrammableDependencyGraphCreator.java

@@ -0,0 +1,109 @@
+/*
+ *  Copyright 2014 Alexey Andreev.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.teavm.dependency;
+
+import org.teavm.model.ClassReader;
+import org.teavm.model.ClassReaderSource;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+class ProgrammableDependencyGraphCreator implements DependencyGraphCreator {
+    int nodeCount;
+    Connection[] connections;
+    TypeRestrictedConnection[] typeRestrictedConnections;
+    TypePropagation[] typePropagations;
+    String[] initializedClasses;
+    int[] variableMap;
+    int resultIndex;
+
+    ProgrammableDependencyGraphCreator() {
+    }
+
+    @Override
+    public DependencyGraphCreatorProduct createDependency(DependencyChecker checker, DependencyStack stack) {
+        DependencyNode[] nodes = new DependencyNode[nodeCount];
+        for (int i = 0; i < nodes.length; ++i) {
+            nodes[i] = checker.createNode();
+        }
+        for (Connection conn : connections) {
+            nodes[conn.from].connect(nodes[conn.to]);
+        }
+        for (TypeRestrictedConnection conn : typeRestrictedConnections) {
+            nodes[conn.from].connect(nodes[conn.to], new DependencySupertypeFilter(checker.getClassSource(),
+                    checker.getClassSource().get(conn.superclass)));
+        }
+        for (TypePropagation propagation : typePropagations) {
+            nodes[propagation.var].propagate(propagation.type);
+        }
+        for (String className : initializedClasses) {
+            checker.initClass(className, stack);
+        }
+        return null;
+    }
+
+    static class Connection {
+        int from;
+        int to;
+    }
+
+    static class TypeRestrictedConnection {
+        int from;
+        int to;
+        String superclass;
+    }
+
+    static class TypePropagation {
+        int var;
+        String type;
+    }
+
+    static class DependencySupertypeFilter implements DependencyTypeFilter {
+        private ClassReaderSource classSource;
+        private ClassReader superClass;
+        public DependencySupertypeFilter(ClassReaderSource classSource, ClassReader superClass) {
+            this.classSource = classSource;
+            this.superClass = superClass;
+        }
+        @Override public boolean match(String type) {
+            if (superClass.getName().equals("java.lang.Object")) {
+                return true;
+            }
+            return isAssignableFrom(classSource, superClass, type);
+        }
+    }
+
+    private static boolean isAssignableFrom(ClassReaderSource classSource, ClassReader supertype,
+            String subtypeName) {
+        if (supertype.getName().equals(subtypeName)) {
+            return true;
+        }
+        ClassReader subtype = classSource.get(subtypeName);
+        if (subtype == null) {
+            return false;
+        }
+        if (subtype.getParent() != null && isAssignableFrom(classSource, supertype, subtype.getParent())) {
+            return true;
+        }
+        for (String iface : subtype.getInterfaces()) {
+            if (isAssignableFrom(classSource, supertype, iface)) {
+                return true;
+            }
+        }
+        return false;
+    }
+}

teavm-core/src/main/java/org/teavm/dependency/ProgrammableDependencyGraphCreatorBuilder.java

@@ -0,0 +1,24 @@
+/*
+ *  Copyright 2014 Alexey Andreev.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.teavm.dependency;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public class ProgrammableDependencyGraphCreatorBuilder {
+
+}