Add ability to fine tune transpiler class substitutions.

classlib/src/main/resources/META-INF/teavm.properties

@@ -11,5 +11,5 @@
 # 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.
-packagePrefix.java=org.teavm.classlib
+stripPrefixFromPackageHierarchyClasses|org.teavm.classlib.java=T
-classPrefix.java=T
+mapPackageHierarchy|org.teavm.classlib.java=java

core/src/main/java/org/teavm/parsing/ClasspathResourceMapper.java

@@ -20,53 +20,69 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.net.URISyntaxException;
 import java.net.URL;
-import java.util.*;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.Enumeration;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Properties;
+import java.util.ServiceLoader;
 import java.util.function.Function;
 import org.teavm.common.CachedFunction;
 import org.teavm.model.ClassHolder;
 import org.teavm.model.FieldHolder;
 import org.teavm.model.MethodHolder;
 import org.teavm.model.ReferenceCache;
+import org.teavm.parsing.substitution.ClassExclusions;
+import org.teavm.parsing.substitution.ClassMappings;
+import org.teavm.parsing.substitution.OrderedProperties;
+import org.teavm.parsing.substitution.PrefixMapping;
 import org.teavm.vm.spi.ElementFilter;
 
 public class ClasspathResourceMapper implements Function<String, ClassHolder>, ClassDateProvider {
-    private static final String PACKAGE_PREFIX = "packagePrefix.";
+    private static final String STRIP_PREFIX_FROM_PREFIX = "stripPrefixFrom";
-    private static final String CLASS_PREFIX = "classPrefix.";
+    private static final String STRIP_PREFIX_FROM_PACKAGE_HIERARCHY_PREFIX =
+            STRIP_PREFIX_FROM_PREFIX + "PackageHierarchyClasses";
+    private static final String STRIP_PREFIX_FROM_PACKAGE_PREFIX = STRIP_PREFIX_FROM_PREFIX + "PackageClasses";
+    private static final String MAP_PREFIX = "map";
+    private static final String MAP_PACKAGE_HIERARCHY_PREFIX = MAP_PREFIX + "PackageHierarchy";
+    private static final String MAP_PACKAGE_PREFIX = MAP_PREFIX + "Package";
+    private static final String MAP_CLASS_PREFIX = MAP_PREFIX + "Class";
+    private static final String INCLUDE_PREFIX = "include";
+    private static final String INCLUDE_PACKAGE_HIERARCHY_PREFIX = INCLUDE_PREFIX + "PackageHierarchy";
+    private static final String INCLUDE_PACKAGE_PREFIX = INCLUDE_PREFIX + "Package";
+    private static final String INCLUDE_CLASS_PREFIX = INCLUDE_PREFIX + "Class";
+    private static final Date VOID_DATE = new Date(0);
     private Function<String, ClassHolder> innerMapper;
-    private List<Transformation> transformations = new ArrayList<>();
     private ClassRefsRenamer renamer;
     private ClassLoader classLoader;
-    private Map<String, ModificationDate> modificationDates = new HashMap<>();
+    private Map<String, Date> modificationDates = new HashMap<>();
-    private ReferenceCache referenceCache;
     private List<ElementFilter> elementFilters = new ArrayList<>();
-
+    private ClassMappings classMappings = new ClassMappings();
-    private static class Transformation {
+    private PrefixMapping prefixMapping = new PrefixMapping();
-        String packageName;
+    private ClassMappings packageMappings = new ClassMappings();
-        String packagePrefix = "";
+    private ClassExclusions classExclusions = new ClassExclusions();
-        String fullPrefix = "";
+    private ClassMappings reverseClassMappings = new ClassMappings();
-        String classPrefix = "";
+    private ClassMappings reversePackageMappings = new ClassMappings();
-    }
 
     public ClasspathResourceMapper(ClassLoader classLoader, ReferenceCache referenceCache,
             Function<String, ClassHolder> provider) {
         this.innerMapper = provider;
-        this.referenceCache = referenceCache;
         try {
             Enumeration<URL> resources = classLoader.getResources("META-INF/teavm.properties");
-            Map<String, Transformation> transformationMap = new HashMap<>();
             while (resources.hasMoreElements()) {
                 URL resource = resources.nextElement();
-                Properties properties = new Properties();
+                Properties properties = new OrderedProperties();
                 try (InputStream input = resource.openStream()) {
                     properties.load(input);
                 }
-                loadProperties(properties, transformationMap);
+                loadProperties(properties);
             }
-            transformations.addAll(transformationMap.values());
         } catch (IOException e) {
             throw new RuntimeException("Error reading resources", e);
         }
-        renamer = new ClassRefsRenamer(referenceCache, new CachedFunction<>(classNameMapper));
+        renamer = new ClassRefsRenamer(referenceCache, new CachedFunction<>(this::toUnmappedClassName));
 
         for (ElementFilter elementFilter : ServiceLoader.load(ElementFilter.class)) {
             elementFilters.add(elementFilter);
@@ -78,61 +94,57 @@ public class ClasspathResourceMapper implements Function<String, ClassHolder>, C
     public ClasspathResourceMapper(Properties properties, ReferenceCache referenceCache,
             Function<String, ClassHolder> innerMapper) {
         this.innerMapper = innerMapper;
-        this.referenceCache = referenceCache;
+        loadProperties(properties);
-        Map<String, Transformation> transformationMap = new HashMap<>();
+        renamer = new ClassRefsRenamer(referenceCache, new CachedFunction<>(this::toUnmappedClassName));
-        loadProperties(properties, transformationMap);
-        transformations.addAll(transformationMap.values());
-        renamer = new ClassRefsRenamer(referenceCache, new CachedFunction<>(classNameMapper));
-    }
-
-    private void loadProperties(Properties properties, Map<String, Transformation> cache) {
-        for (String propertyName : properties.stringPropertyNames()) {
-            if (propertyName.startsWith(PACKAGE_PREFIX)) {
-                String packageName = propertyName.substring(PACKAGE_PREFIX.length());
-                Transformation transformation = getTransformation(cache, packageName);
-                transformation.packagePrefix = properties.getProperty(propertyName) + ".";
-                transformation.fullPrefix = transformation.packagePrefix + transformation.packageName;
-            } else if (propertyName.startsWith(CLASS_PREFIX)) {
-                String packageName = propertyName.substring(CLASS_PREFIX.length());
-                Transformation transformation = getTransformation(cache, packageName);
-                transformation.classPrefix = properties.getProperty(propertyName);
-            }
-        }
-    }
-
-    private Transformation getTransformation(Map<String, Transformation> cache, String packageName) {
-        Transformation transformation = cache.get(packageName);
-        if (transformation == null) {
-            transformation = new Transformation();
-            transformation.packageName = packageName + ".";
-            transformation.fullPrefix = packageName + ".";
-            cache.put(packageName, transformation);
-        }
-        return transformation;
     }
 
     @Override
     public ClassHolder apply(String name) {
-        for (ElementFilter filter : elementFilters) {
+        ClassHolder cls = null;
-            if (!filter.acceptClass(name)) {
+        for (String mappedClassName : classMappings.apply(name)) {
-                return null;
+            if (classExclusions.apply(mappedClassName)) {
+                continue;
+            }
+            ClassHolder classHolder = innerMapper.apply(mappedClassName);
+            if (classHolder == null) {
+                continue;
+            }
+            cls = renamer.rename(classHolder);
+            break;
+        }
+        if (cls == null) {
+            for (String mappedClassName : packageMappings.apply(name)) {
+                mappedClassName = prefixMapping.apply(mappedClassName);
+                if (classExclusions.apply(mappedClassName)) {
+                    continue;
+                }
+                ClassHolder classHolder = innerMapper.apply(mappedClassName);
+                if (classHolder == null) {
+                    continue;
+                }
+                cls = renamer.rename(classHolder);
+                break;
             }
         }
-
+        if (cls == null) {
-        ClassHolder cls = find(name);
+            cls = innerMapper.apply(name);
-
+        }
-        if (cls != null) {
+        if (cls != null && !elementFilters.isEmpty()) {
-            for (MethodHolder method : cls.getMethods().toArray(new MethodHolder[0])) {
+            for (ElementFilter filter : elementFilters) {
-                for (ElementFilter filter : elementFilters) {
+                if (!filter.acceptClass(name)) {
+                    return null;
+                }
+            }
+            MethodHolder[] methodHolders = cls.getMethods().toArray(new MethodHolder[0]);
+            FieldHolder[] fieldHolders = cls.getFields().toArray(new FieldHolder[0]);
+            for (ElementFilter filter : elementFilters) {
+                for (MethodHolder method : methodHolders) {
                     if (!filter.acceptMethod(method.getReference())) {
                         cls.removeMethod(method);
                         break;
                     }
                 }
-            }
+                for (FieldHolder field : fieldHolders) {
-
-            for (FieldHolder field : cls.getFields().toArray(new FieldHolder[0])) {
-                for (ElementFilter filter : elementFilters) {
                     if (!filter.acceptField(field.getReference())) {
                         cls.removeField(field);
                         break;
@@ -140,77 +152,31 @@ public class ClasspathResourceMapper implements Function<String, ClassHolder>, C
                 }
             }
         }
-
         return cls;
     }
 
-    private ClassHolder find(String name) {
-        for (Transformation transformation : transformations) {
-            if (name.startsWith(transformation.packageName)) {
-                int index = name.lastIndexOf('.');
-                String className = name.substring(index + 1);
-                String packageName = index > 0 ? name.substring(0, index) : "";
-                ClassHolder classHolder = innerMapper.apply(transformation.packagePrefix + packageName
-                        + "." + transformation.classPrefix + className);
-                if (classHolder != null) {
-                    classHolder = renamer.rename(classHolder);
-                }
-                return classHolder;
-            }
-        }
-        return innerMapper.apply(name);
-    }
-
-    private String renameClass(String name) {
-        for (Transformation transformation : transformations) {
-            if (name.startsWith(transformation.fullPrefix)) {
-                int index = name.lastIndexOf('.');
-                String className = name.substring(index + 1);
-                String packageName = name.substring(0, index);
-                if (className.startsWith(transformation.classPrefix)) {
-                    String newName = packageName.substring(transformation.packagePrefix.length()) + "."
-                            + className.substring(transformation.classPrefix.length());
-                    return referenceCache.getCached(newName);
-                }
-            }
-        }
-        return name;
-    }
-
-    private Function<String, String> classNameMapper = this::renameClass;
-
     @Override
     public Date getModificationDate(String className) {
-        ModificationDate mdate = modificationDates.get(className);
+        Date mdate = modificationDates.get(className);
         if (mdate == null) {
-            mdate = new ModificationDate();
+            mdate = getOriginalModificationDate(toUnmappedClassName(className));
             modificationDates.put(className, mdate);
-            mdate.date = calculateModificationDate(className);
         }
-        return mdate.date;
+        return mdate == VOID_DATE ? null : mdate;
     }
 
-    private Date calculateModificationDate(String className) {
+    private String toUnmappedClassName(String name) {
-        int dotIndex = className.lastIndexOf('.');
+        if (classExclusions.apply(name)) {
-        String packageName;
+            return name;
-        String simpleName;
-        if (dotIndex > 0) {
-            packageName = className.substring(0, dotIndex + 1);
-            simpleName = className.substring(dotIndex + 1);
-        } else {
-            packageName = "";
-            simpleName = className;
         }
-        for (Transformation transformation : transformations) {
+        name = prefixMapping.revert(name);
-            if (packageName.startsWith(transformation.packageName)) {
+        for (String originalClassName : reverseClassMappings.apply(name)) {
-                String fullName = transformation.packagePrefix + packageName + transformation.classPrefix + simpleName;
+            return originalClassName;
-                Date date = getOriginalModificationDate(fullName);
-                if (date != null) {
-                    return date;
-                }
-            }
         }
-        return getOriginalModificationDate(className);
+        for (String originalClassName : reversePackageMappings.apply(name)) {
+            return originalClassName;
+        }
+        return name;
     }
 
     private Date getOriginalModificationDate(String className) {
@@ -239,7 +205,48 @@ public class ClasspathResourceMapper implements Function<String, ClassHolder>, C
         }
     }
 
-    static class ModificationDate {
+    private void loadProperties(Properties properties) {
-        Date date;
+        for (String propertyName : properties.stringPropertyNames()) {
+            final String[] instruction = propertyName.split("\\|", 2);
+            switch (instruction[0]) {
+                case STRIP_PREFIX_FROM_PACKAGE_HIERARCHY_PREFIX:
+                    prefixMapping.setPackageHierarchyClassPrefixRule(instruction[1].split("\\."),
+                            properties.getProperty(propertyName));
+                    continue;
+                case STRIP_PREFIX_FROM_PACKAGE_PREFIX:
+                    prefixMapping.setPackageClassPrefixRule(instruction[1].split("\\."),
+                            properties.getProperty(propertyName));
+                    continue;
+                case MAP_PACKAGE_HIERARCHY_PREFIX:
+                    packageMappings.addPackageHierarchyMappingRule(properties.getProperty(propertyName).split("\\."),
+                            instruction[1]);
+                    reversePackageMappings.addPackageHierarchyMappingRule(instruction[1].split("\\."),
+                            properties.getProperty(propertyName));
+                    continue;
+                case MAP_PACKAGE_PREFIX:
+                    packageMappings
+                            .addPackageMappingRule(properties.getProperty(propertyName).split("\\."), instruction[1]);
+                    reversePackageMappings
+                            .addPackageMappingRule(instruction[1].split("\\."), properties.getProperty(propertyName));
+                    continue;
+                case MAP_CLASS_PREFIX:
+                    classMappings
+                            .addClassMappingRule(properties.getProperty(propertyName).split("\\."), instruction[1]);
+                    reverseClassMappings
+                            .addClassMappingRule(instruction[1].split("\\."), properties.getProperty(propertyName));
+                    continue;
+                case INCLUDE_PACKAGE_HIERARCHY_PREFIX:
+                    classExclusions.setPackageHierarchyExclusion(instruction[1].split("\\."),
+                            !Boolean.parseBoolean(properties.getProperty(propertyName)));
+                    continue;
+                case INCLUDE_PACKAGE_PREFIX:
+                    classExclusions.setPackageExclusion(instruction[1].split("\\."),
+                            !Boolean.parseBoolean(properties.getProperty(propertyName)));
+                    continue;
+                case INCLUDE_CLASS_PREFIX:
+                    classExclusions.setClassExclusion(instruction[1].split("\\."),
+                            !Boolean.parseBoolean(properties.getProperty(propertyName)));
+            }
+        }
     }
-}
+}

core/src/main/java/org/teavm/parsing/substitution/ClassExclusions.java

@@ -0,0 +1,83 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution;
+
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.function.Function;
+
+public class ClassExclusions implements Function<String, Boolean> {
+    private final Map<String, Boolean> classExclusions = new HashMap<>();
+    private Boolean isExcluded;
+    private Boolean isSubpackagesExcluded;
+    private final Map<String, ClassExclusions> subExclusions = new HashMap<>();
+
+    @Override
+    public Boolean apply(String className) {
+        return isExcluded(className.split("\\.")) == Boolean.TRUE;
+    }
+
+    public void setPackageHierarchyExclusion(String[] packageNameSegments, boolean isExcluded) {
+        if (packageNameSegments == null || packageNameSegments.length < 1) {
+            isSubpackagesExcluded = isExcluded;
+            return;
+        }
+        subExclusions.computeIfAbsent(packageNameSegments[0], packageName -> new ClassExclusions())
+                .setPackageHierarchyExclusion(
+                        Arrays.copyOfRange(packageNameSegments, 1, packageNameSegments.length), isExcluded);
+    }
+
+    public void setPackageExclusion(String[] packageNameSegments, boolean isExcluded) {
+        if (packageNameSegments == null || packageNameSegments.length < 1) {
+            this.isExcluded = isExcluded;
+            return;
+        }
+        subExclusions.computeIfAbsent(packageNameSegments[0], packageName -> new ClassExclusions())
+                .setPackageExclusion(Arrays.copyOfRange(packageNameSegments, 1, packageNameSegments.length),
+                        isExcluded);
+    }
+
+    public void setClassExclusion(String[] classNameSegments, boolean isExcluded) {
+        if (classNameSegments == null || classNameSegments.length < 1) {
+            return;
+        }
+        if (classNameSegments.length == 1) {
+            classExclusions.put(classNameSegments[0], isExcluded);
+        } else {
+            subExclusions.computeIfAbsent(classNameSegments[0], packageName -> new ClassExclusions())
+                    .setClassExclusion(Arrays.copyOfRange(classNameSegments, 1, classNameSegments.length),
+                            isExcluded);
+        }
+    }
+
+    private Boolean isExcluded(String[] classNameSegments) {
+        if (classNameSegments == null || classNameSegments.length < 1) {
+            return isExcluded;
+        }
+        if (classNameSegments.length == 1) {
+            final Boolean isClassExcluded = classExclusions.get(classNameSegments[0]);
+            return isClassExcluded != null ? isClassExcluded : isExcluded != null ? isExcluded : isSubpackagesExcluded;
+        }
+        ClassExclusions subPackageExclusions = subExclusions.get(classNameSegments[0]);
+        if (subPackageExclusions != null) {
+            Boolean isExcluded = subPackageExclusions
+                    .isExcluded(Arrays.copyOfRange(classNameSegments, 1, classNameSegments.length));
+            return isExcluded != null ? isExcluded : isSubpackagesExcluded;
+        }
+        return isSubpackagesExcluded;
+    }
+}

core/src/main/java/org/teavm/parsing/substitution/ClassMappings.java

@@ -0,0 +1,103 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution;
+
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+import java.util.function.Function;
+
+public class ClassMappings implements Function<String, List<String>> {
+    private final Map<String, List<String>> mappedClassNames = new LinkedHashMap<>();
+    private final List<String> mappedPackageNames = new LinkedList<>();
+    private final List<String> mappedPackageHierarchyNames = new LinkedList<>();
+    private final Map<String, ClassMappings> subMappings = new HashMap<>();
+
+    @Override
+    public List<String> apply(String className) {
+        List<String> mappings = new LinkedList<>();
+        getMappingsInto(className.split("\\."), mappings);
+        return mappings;
+    }
+
+    public void addPackageHierarchyMappingRule(String[] packageNameSegments, String mappedPackageName) {
+        if (packageNameSegments == null || packageNameSegments.length < 1) {
+            mappedPackageHierarchyNames.add(mappedPackageName);
+        } else {
+            subMappings.computeIfAbsent(packageNameSegments[0], packageName -> new ClassMappings())
+                    .addPackageHierarchyMappingRule(
+                            Arrays.copyOfRange(packageNameSegments, 1, packageNameSegments.length),
+                            mappedPackageName);
+        }
+    }
+
+    public void addPackageMappingRule(String[] packageNameSegments, String mappedPackageName) {
+        if (packageNameSegments == null || packageNameSegments.length < 1) {
+            mappedPackageNames.add(mappedPackageName);
+        } else {
+            subMappings.computeIfAbsent(packageNameSegments[0], packageName -> new ClassMappings())
+                    .addPackageMappingRule(Arrays.copyOfRange(packageNameSegments, 1, packageNameSegments.length),
+                            mappedPackageName);
+        }
+    }
+
+    public void addClassMappingRule(String[] classNameSegments, String mappedClassName) {
+        if (classNameSegments == null || classNameSegments.length < 1) {
+            return;
+        }
+        if (classNameSegments.length == 1) {
+            mappedClassNames.computeIfAbsent(classNameSegments[0], simpleClassName -> new LinkedList<>())
+                    .add(mappedClassName);
+            return;
+        }
+        subMappings.computeIfAbsent(classNameSegments[0], packageName -> new ClassMappings())
+                .addClassMappingRule(Arrays.copyOfRange(classNameSegments, 1, classNameSegments.length),
+                        mappedClassName);
+    }
+
+    private void getMappingsInto(String[] classNameSegments, List<String> mappings) {
+        if (classNameSegments == null || classNameSegments.length < 1) {
+            return;
+        }
+        if (classNameSegments.length == 1) {
+            final List<String> classNameMappings = mappedClassNames.get(classNameSegments[0]);
+            if (classNameMappings != null) {
+                mappings.addAll(classNameMappings);
+            }
+            if (!mappedPackageNames.isEmpty()) {
+                String mappingSuffix = "." + classNameSegments[0];
+                for (String packageName : mappedPackageNames) {
+                    mappings.add(packageName + mappingSuffix);
+                }
+            }
+        } else {
+            ClassMappings classMappings = subMappings.get(classNameSegments[0]);
+            if (classMappings != null) {
+                classMappings
+                        .getMappingsInto(Arrays.copyOfRange(classNameSegments, 1, classNameSegments.length), mappings);
+            }
+        }
+        if (!mappedPackageHierarchyNames.isEmpty()) {
+            String mappingSuffix = "." + String.join(".", classNameSegments);
+            for (String packageName : mappedPackageHierarchyNames) {
+                mappings.add(packageName + mappingSuffix);
+            }
+        }
+    }
+}

core/src/main/java/org/teavm/parsing/substitution/OrderedProperties.java

@@ -0,0 +1,59 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution;
+
+import java.util.Enumeration;
+import java.util.LinkedHashSet;
+import java.util.Properties;
+import java.util.Set;
+import java.util.Vector;
+
+public class OrderedProperties extends Properties {
+    private Vector<Object> keys;
+
+    public OrderedProperties() {
+        keys = new Vector<>();
+    }
+
+    @Override
+    public Object put(Object key, Object value) {
+        keys.remove(key);
+        keys.add(key);
+        return super.put(key, value);
+    }
+
+    @Override
+    public Enumeration<?> propertyNames() {
+        return keys.elements();
+    }
+
+    @Override
+    public Set<String> stringPropertyNames() {
+        Set<String> stringPropertyNames = new LinkedHashSet<>(keys.size());
+        for (Object key : keys) {
+            if (key instanceof String) {
+                stringPropertyNames.add((String) key);
+            }
+        }
+        return stringPropertyNames;
+    }
+
+    @Override
+    public Object remove(Object key) {
+        keys.remove(key);
+        return super.remove(key);
+    }
+}

core/src/main/java/org/teavm/parsing/substitution/PrefixMapping.java

@@ -0,0 +1,74 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution;
+
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.function.Function;
+
+public class PrefixMapping implements Function<String, String> {
+    private String packageClassPrefix;
+    private String packageHierarchyClassPrefix;
+    private final Map<String, PrefixMapping> subMappings = new HashMap<>();
+
+    @Override
+    public String apply(String className) {
+        final String prefix = getPrefix(className.split("\\."));
+        return prefix != null ? new StringBuilder(className).insert(className.lastIndexOf(".") + 1, prefix)
+                .toString() : className;
+    }
+
+    public String revert(String className) {
+        final String prefix = getPrefix(className.split("\\."));
+        return prefix != null ? new StringBuilder(className)
+                .delete(className.lastIndexOf(".") + 1, className.lastIndexOf(".") + 1 + prefix.length()).toString()
+                : className;
+    }
+
+    public void setPackageHierarchyClassPrefixRule(String[] packageNameSegments, String classPrefix) {
+        if (packageNameSegments == null || packageNameSegments.length < 1) {
+            packageHierarchyClassPrefix = classPrefix;
+        } else {
+            subMappings.computeIfAbsent(packageNameSegments[0], s -> new PrefixMapping())
+                    .setPackageHierarchyClassPrefixRule(
+                            Arrays.copyOfRange(packageNameSegments, 1, packageNameSegments.length), classPrefix);
+        }
+    }
+
+    public void setPackageClassPrefixRule(String[] packageNameSegments, String classPrefix) {
+        if (packageNameSegments == null || packageNameSegments.length < 1) {
+            packageClassPrefix = classPrefix;
+        } else {
+            subMappings.computeIfAbsent(packageNameSegments[0], s -> new PrefixMapping())
+                    .setPackageClassPrefixRule(
+                            Arrays.copyOfRange(packageNameSegments, 1, packageNameSegments.length), classPrefix);
+        }
+    }
+
+    private String getPrefix(String[] classNameSegments) {
+        if (classNameSegments == null || classNameSegments.length <= 1) {
+            return packageClassPrefix != null ? packageClassPrefix : packageHierarchyClassPrefix;
+        }
+        final PrefixMapping prefixMapping = subMappings.get(classNameSegments[0]);
+        if (prefixMapping != null) {
+            final String prefix =
+                    prefixMapping.getPrefix(Arrays.copyOfRange(classNameSegments, 1, classNameSegments.length));
+            return prefix != null ? prefix : packageHierarchyClassPrefix;
+        }
+        return packageHierarchyClassPrefix;
+    }
+}

tests/src/test/java/org/teavm/parsing/substitution/ClasspathResourceMapperTest.java

@@ -0,0 +1,106 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution;
+
+import static org.junit.Assert.assertEquals;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.teavm.junit.SkipJVM;
+import org.teavm.junit.TeaVMTestRunner;
+import org.teavm.junit.WholeClassCompilation;
+import org.teavm.parsing.substitution.java.RootPackageClass1;
+import org.teavm.parsing.substitution.java.RootPackageClass2;
+import org.teavm.parsing.substitution.java.RootPackageClass3;
+import org.teavm.parsing.substitution.java.RootPackageClass4;
+import org.teavm.parsing.substitution.java.excludedhierarchy.ExcludedPackageClass1;
+import org.teavm.parsing.substitution.java.excludedhierarchy.excludedsubpackage.ExcludedSubPackageClass;
+import org.teavm.parsing.substitution.java.excludedhierarchy.excludedsubpackage.IncludedSubPackageClass;
+import org.teavm.parsing.substitution.java.excludedpackage.ExcludedPackageClass2;
+import org.teavm.parsing.substitution.java.excludedpackage.excludedsubpackage.NotExcludedSubPackageClass;
+import org.teavm.parsing.substitution.java.subpackage.ExcludedClass;
+import org.teavm.parsing.substitution.java.subpackage.SubPackageClass1;
+import org.teavm.parsing.substitution.java.subpackage.SubPackageClass2;
+import org.teavm.parsing.substitution.java.subpackage.SubPackageClass3;
+import org.teavm.parsing.substitution.java.subpackage.SubPackageClass4;
+import org.teavm.parsing.substitution.java.subpackage.subsubpackage.SubSubPackageClass1;
+
+@RunWith(TeaVMTestRunner.class)
+@WholeClassCompilation
+@SkipJVM
+public class ClasspathResourceMapperTest {
+    @Test
+    public void classesInPackageHierarchyMappingAreSubstituted() {
+        assertEquals("RootPackageClass1Substitute", new RootPackageClass1().getIdentifier());
+        assertEquals("SubPackageClass1Substitute", new SubPackageClass1().getIdentifier());
+    }
+
+    @Test
+    public void classesInPackageMappingAreSubstituted() {
+        assertEquals("RootPackageClass2Substitute", new RootPackageClass2().getIdentifier());
+    }
+
+    @Test
+    public void classesOutsidePackageMappingAreNotSubstituted() {
+        assertEquals("SubPackageClass2", new SubPackageClass2().getIdentifier());
+    }
+
+    @Test
+    public void specificClassMappingsAreSubstituted() {
+        assertEquals("SubSubPackageClassSubstitute", new SubSubPackageClass1().getIdentifier());
+    }
+
+    @Test
+    public void prefixedClassesInPackageHierarchyMappingAreSubstituted() {
+        assertEquals("RootPackageClass3Substitute", new RootPackageClass3().getIdentifier());
+        assertEquals("SubPackageClass3Substitute", new SubPackageClass3().getIdentifier());
+    }
+
+    @Test
+    public void prefixedClassesInPackageMappingAreSubstituted() {
+        assertEquals("RootPackageClass4Substitute", new RootPackageClass4().getIdentifier());
+    }
+
+    @Test
+    public void prefixedClassesOutsidePackageMappingAreNotSubstituted() {
+        assertEquals("SubPackageClass4", new SubPackageClass4().getIdentifier());
+    }
+
+    @Test
+    public void excludedClassesInPackageHierarchyMappingAreNotSubstituted() {
+        assertEquals("ExcludedPackageClass1", new ExcludedPackageClass1().getIdentifier());
+        assertEquals("ExcludedSubPackageClass", new ExcludedSubPackageClass().getIdentifier());
+    }
+
+    @Test
+    public void excludedClassesInPackageMappingAreNotSubstituted() {
+        assertEquals("ExcludedPackageClass2", new ExcludedPackageClass2().getIdentifier());
+    }
+
+    @Test
+    public void classesOutsidePackageMappingExclusionAreSubstituted() {
+        assertEquals("NotExcludedSubPackageClassSubstitute", new NotExcludedSubPackageClass().getIdentifier());
+    }
+
+    @Test
+    public void individualIncludedClassesInPackageHierarchyMappingExclusionAreSubstituted() {
+        assertEquals("IncludedSubPackageClassSubstitute", new IncludedSubPackageClass().getIdentifier());
+    }
+
+    @Test
+    public void individualExcludedClassesInPackageHierarchyMappingAreNotSubstituted() {
+        assertEquals("ExcludedClass", new ExcludedClass().getIdentifier());
+    }
+}

tests/src/test/java/org/teavm/parsing/substitution/classlib/SubSubPackageClassSubstitute.java

@@ -0,0 +1,22 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution.classlib;
+
+public class SubSubPackageClassSubstitute {
+    public String getIdentifier() {
+        return "SubSubPackageClassSubstitute";
+    }
+}

tests/src/test/java/org/teavm/parsing/substitution/classlib/packagehierarchysubstitution/RootPackageClass1.java

@@ -0,0 +1,22 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution.classlib.packagehierarchysubstitution;
+
+public class RootPackageClass1 {
+    public String getIdentifier() {
+        return "RootPackageClass1Substitute";
+    }
+}

tests/src/test/java/org/teavm/parsing/substitution/classlib/packagehierarchysubstitution/excludedhierarchy/ExcludedPackageClass1.java

@@ -0,0 +1,22 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution.classlib.packagehierarchysubstitution.excludedhierarchy;
+
+public class ExcludedPackageClass1 {
+    public String getIdentifier() {
+        return "ExcludedPackageClass1Substitute";
+    }
+}

tests/src/test/java/org/teavm/parsing/substitution/classlib/packagehierarchysubstitution/excludedhierarchy/excludedsubpackage/ExcludedSubPackageClass.java

@@ -0,0 +1,22 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution.classlib.packagehierarchysubstitution.excludedhierarchy.excludedsubpackage;
+
+public class ExcludedSubPackageClass {
+    public String getIdentifier() {
+        return "ExcludedSubPackageClassSubstitute";
+    }
+}

tests/src/test/java/org/teavm/parsing/substitution/classlib/packagehierarchysubstitution/excludedhierarchy/excludedsubpackage/IncludedSubPackageClass.java

@@ -0,0 +1,22 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution.classlib.packagehierarchysubstitution.excludedhierarchy.excludedsubpackage;
+
+public class IncludedSubPackageClass {
+    public String getIdentifier() {
+        return "IncludedSubPackageClassSubstitute";
+    }
+}

tests/src/test/java/org/teavm/parsing/substitution/classlib/packagehierarchysubstitution/excludedpackage/ExcludedPackageClass2.java

@@ -0,0 +1,22 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution.classlib.packagehierarchysubstitution.excludedpackage;
+
+public class ExcludedPackageClass2 {
+    public String getIdentifier() {
+        return "ExcludedPackageClass2Substitute";
+    }
+}

tests/src/test/java/org/teavm/parsing/substitution/classlib/packagehierarchysubstitution/excludedpackage/excludedsubpackage/NotExcludedSubPackageClass.java

@@ -0,0 +1,22 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution.classlib.packagehierarchysubstitution.excludedpackage.excludedsubpackage;
+
+public class NotExcludedSubPackageClass {
+    public String getIdentifier() {
+        return "NotExcludedSubPackageClassSubstitute";
+    }
+}

tests/src/test/java/org/teavm/parsing/substitution/classlib/packagehierarchysubstitution/subpackage/ExcludedClass.java

@@ -0,0 +1,22 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution.classlib.packagehierarchysubstitution.subpackage;
+
+public class ExcludedClass {
+    public String getIdentifier() {
+        return "ExcludedClassSubstitute";
+    }
+}

tests/src/test/java/org/teavm/parsing/substitution/classlib/packagehierarchysubstitution/subpackage/SubPackageClass1.java

@@ -0,0 +1,22 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution.classlib.packagehierarchysubstitution.subpackage;
+
+public class SubPackageClass1 {
+    public String getIdentifier() {
+        return "SubPackageClass1Substitute";
+    }
+}

tests/src/test/java/org/teavm/parsing/substitution/classlib/packagesubstitution/RootPackageClass2.java

@@ -0,0 +1,22 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution.classlib.packagesubstitution;
+
+public class RootPackageClass2 {
+    public String getIdentifier() {
+        return "RootPackageClass2Substitute";
+    }
+}

tests/src/test/java/org/teavm/parsing/substitution/classlib/packagesubstitution/subpackage/SubPackageClass2.java

@@ -0,0 +1,22 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution.classlib.packagesubstitution.subpackage;
+
+public class SubPackageClass2 {
+    public String getIdentifier() {
+        return "SubPackageClass2Substitute";
+    }
+}

tests/src/test/java/org/teavm/parsing/substitution/classlib/prefixed/packagehierarchysubstitution/PrefixedRootPackageClass3.java

@@ -0,0 +1,22 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution.classlib.prefixed.packagehierarchysubstitution;
+
+public class PrefixedRootPackageClass3 {
+    public String getIdentifier() {
+        return "RootPackageClass3Substitute";
+    }
+}

tests/src/test/java/org/teavm/parsing/substitution/classlib/prefixed/packagehierarchysubstitution/subpackage/PrefixedSubPackageClass3.java

@@ -0,0 +1,22 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution.classlib.prefixed.packagehierarchysubstitution.subpackage;
+
+public class PrefixedSubPackageClass3 {
+    public String getIdentifier() {
+        return "SubPackageClass3Substitute";
+    }
+}

tests/src/test/java/org/teavm/parsing/substitution/classlib/prefixed/packagesubstitution/PrefixedRootPackageClass4.java

@@ -0,0 +1,22 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution.classlib.prefixed.packagesubstitution;
+
+public class PrefixedRootPackageClass4 {
+    public String getIdentifier() {
+        return "RootPackageClass4Substitute";
+    }
+}

tests/src/test/java/org/teavm/parsing/substitution/classlib/prefixed/packagesubstitution/subpackage/PrefixedSubPackageClass4.java

@@ -0,0 +1,22 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution.classlib.prefixed.packagesubstitution.subpackage;
+
+public class PrefixedSubPackageClass4 {
+    public String getIdentifier() {
+        return "SubPackageClass4Substitute";
+    }
+}

tests/src/test/java/org/teavm/parsing/substitution/java/RootPackageClass1.java

@@ -0,0 +1,22 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution.java;
+
+public class RootPackageClass1 {
+    public String getIdentifier() {
+        return "RootPackageClass1";
+    }
+}

tests/src/test/java/org/teavm/parsing/substitution/java/RootPackageClass2.java

@@ -0,0 +1,22 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution.java;
+
+public class RootPackageClass2 {
+    public String getIdentifier() {
+        return "RootPackageClass2";
+    }
+}

tests/src/test/java/org/teavm/parsing/substitution/java/RootPackageClass3.java

@@ -0,0 +1,22 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution.java;
+
+public class RootPackageClass3 {
+    public String getIdentifier() {
+        return "RootPackageClass3";
+    }
+}

tests/src/test/java/org/teavm/parsing/substitution/java/RootPackageClass4.java

@@ -0,0 +1,22 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution.java;
+
+public class RootPackageClass4 {
+    public String getIdentifier() {
+        return "RootPackageClass4";
+    }
+}

tests/src/test/java/org/teavm/parsing/substitution/java/excludedhierarchy/ExcludedPackageClass1.java

@@ -0,0 +1,22 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution.java.excludedhierarchy;
+
+public class ExcludedPackageClass1 {
+    public String getIdentifier() {
+        return "ExcludedPackageClass1";
+    }
+}

tests/src/test/java/org/teavm/parsing/substitution/java/excludedhierarchy/excludedsubpackage/ExcludedSubPackageClass.java

@@ -0,0 +1,22 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution.java.excludedhierarchy.excludedsubpackage;
+
+public class ExcludedSubPackageClass {
+    public String getIdentifier() {
+        return "ExcludedSubPackageClass";
+    }
+}

tests/src/test/java/org/teavm/parsing/substitution/java/excludedhierarchy/excludedsubpackage/IncludedSubPackageClass.java

@@ -0,0 +1,22 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution.java.excludedhierarchy.excludedsubpackage;
+
+public class IncludedSubPackageClass {
+    public String getIdentifier() {
+        return "IncludedSubPackageClass";
+    }
+}

tests/src/test/java/org/teavm/parsing/substitution/java/excludedpackage/ExcludedPackageClass2.java

@@ -0,0 +1,22 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution.java.excludedpackage;
+
+public class ExcludedPackageClass2 {
+    public String getIdentifier() {
+        return "ExcludedPackageClass2";
+    }
+}

tests/src/test/java/org/teavm/parsing/substitution/java/excludedpackage/excludedsubpackage/NotExcludedSubPackageClass.java

@@ -0,0 +1,22 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution.java.excludedpackage.excludedsubpackage;
+
+public class NotExcludedSubPackageClass {
+    public String getIdentifier() {
+        return "NotExcludedSubPackageClass";
+    }
+}

tests/src/test/java/org/teavm/parsing/substitution/java/subpackage/ExcludedClass.java

@@ -0,0 +1,22 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution.java.subpackage;
+
+public class ExcludedClass {
+    public String getIdentifier() {
+        return "ExcludedClass";
+    }
+}

tests/src/test/java/org/teavm/parsing/substitution/java/subpackage/SubPackageClass1.java

@@ -0,0 +1,22 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution.java.subpackage;
+
+public class SubPackageClass1 {
+    public String getIdentifier() {
+        return "SubPackageClass1";
+    }
+}

tests/src/test/java/org/teavm/parsing/substitution/java/subpackage/SubPackageClass2.java

@@ -0,0 +1,22 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution.java.subpackage;
+
+public class SubPackageClass2 {
+    public String getIdentifier() {
+        return "SubPackageClass2";
+    }
+}

tests/src/test/java/org/teavm/parsing/substitution/java/subpackage/SubPackageClass3.java

@@ -0,0 +1,22 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution.java.subpackage;
+
+public class SubPackageClass3 {
+    public String getIdentifier() {
+        return "SubPackageClass3";
+    }
+}

tests/src/test/java/org/teavm/parsing/substitution/java/subpackage/SubPackageClass4.java

@@ -0,0 +1,22 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution.java.subpackage;
+
+public class SubPackageClass4 {
+    public String getIdentifier() {
+        return "SubPackageClass4";
+    }
+}

tests/src/test/java/org/teavm/parsing/substitution/java/subpackage/subsubpackage/SubSubPackageClass1.java

@@ -0,0 +1,22 @@
+/*
+ *  Copyright 2020 adam.
+ *
+ *  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.parsing.substitution.java.subpackage.subsubpackage;
+
+public class SubSubPackageClass1 {
+    public String getIdentifier() {
+        return "SubSubPackageClass";
+    }
+}

tests/src/test/js/.gitignore

@@ -1,3 +1,4 @@
 /node_modules/
 /bin/
-/tmp/
+/tmp/
+package-lock.json

tests/src/test/resources/META-INF/teavm.properties

@@ -0,0 +1,26 @@
+#
+#  Copyright 2020 adam.
+#
+#  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.
+#
+mapPackageHierarchy|org.teavm.parsing.substitution.classlib.packagehierarchysubstitution=org.teavm.parsing.substitution.java
+mapPackage|org.teavm.parsing.substitution.classlib.packagesubstitution=org.teavm.parsing.substitution.java
+mapClass|org.teavm.parsing.substitution.classlib.SubSubPackageClassSubstitute=org.teavm.parsing.substitution.java.subpackage.subsubpackage.SubSubPackageClass1
+mapPackageHierarchy|org.teavm.parsing.substitution.classlib.prefixed.packagehierarchysubstitution=org.teavm.parsing.substitution.java
+stripPrefixFromPackageHierarchyClasses|org.teavm.parsing.substitution.classlib.prefixed.packagehierarchysubstitution=Prefixed
+mapPackage|org.teavm.parsing.substitution.classlib.prefixed.packagesubstitution=org.teavm.parsing.substitution.java
+stripPrefixFromPackageClasses|org.teavm.parsing.substitution.classlib.prefixed.packagesubstitution=Prefixed
+includePackageHierarchy|org.teavm.parsing.substitution.classlib.packagehierarchysubstitution.excludedhierarchy=false
+includePackage|org.teavm.parsing.substitution.classlib.packagehierarchysubstitution.excludedpackage=false
+includeClass|org.teavm.parsing.substitution.classlib.packagehierarchysubstitution.excludedhierarchy.excludedsubpackage.IncludedSubPackageClass=true
+includeClass|org.teavm.parsing.substitution.classlib.packagehierarchysubstitution.subpackage.ExcludedClass=false