Adds some JVM classes.

teavm-classlib/src/main/java/org/teavm/classlib/java/lang/StringNativeGenerator.java

@@ -0,0 +1,25 @@
+package org.teavm.classlib.java.lang;
+
+import org.teavm.codegen.SourceWriter;
+import org.teavm.javascript.ni.Generator;
+import org.teavm.javascript.ni.GeneratorContext;
+import org.teavm.model.MethodReference;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public class StringNativeGenerator implements Generator {
+    @Override
+    public void generate(GeneratorContext context, SourceWriter writer, MethodReference methodRef) {
+        switch (methodRef.getName()) {
+            case "wrap":
+                generateWrap(context, writer);
+                break;
+        }
+    }
+
+    private void generateWrap(GeneratorContext context, SourceWriter writer) {
+        writer.append("return ").append(context.getParameterName(1)).newLine();
+    }
+}

teavm-classlib/src/main/java/org/teavm/classlib/java/lang/SystemNativeGenerator.java

@@ -0,0 +1,52 @@
+package org.teavm.classlib.java.lang;
+
+import org.teavm.codegen.SourceWriter;
+import org.teavm.dependency.DependencyChecker;
+import org.teavm.dependency.DependencyNode;
+import org.teavm.dependency.DependencyPlugin;
+import org.teavm.dependency.MethodGraph;
+import org.teavm.javascript.ni.Generator;
+import org.teavm.javascript.ni.GeneratorContext;
+import org.teavm.model.MethodReference;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public class SystemNativeGenerator implements Generator, DependencyPlugin {
+    @Override
+    public void generate(GeneratorContext context, SourceWriter writer, MethodReference methodRef) {
+        switch (methodRef.getName()) {
+            case "doArrayCopy":
+                generateArrayCopy(context, writer);
+                break;
+        }
+    }
+
+    @Override
+    public void methodAchieved(DependencyChecker checker, MethodReference method) {
+        switch (method.getName()) {
+            case "doArrayCopy":
+                achieveArrayCopy(checker, method);
+                break;
+        }
+    }
+
+    private void generateArrayCopy(GeneratorContext context, SourceWriter writer) {
+        String src = context.getParameterName(1);
+        String srcPos = context.getParameterName(2);
+        String dest = context.getParameterName(3);
+        String destPos = context.getParameterName(4);
+        String length = context.getParameterName(5);
+        writer.append("for (var i = 0; i < " + length + "; i = (i + 1) | 0) {").indent().newLine();
+        writer.append(dest + "[" + srcPos + "++] = " + src + "[" + destPos + "++];").newLine();
+        writer.outdent().append("}").newLine();
+    }
+
+    private void achieveArrayCopy(DependencyChecker checker, MethodReference method) {
+        MethodGraph graph = checker.attachMethodGraph(method);
+        DependencyNode src = graph.getVariableNode(1);
+        DependencyNode dest = graph.getVariableNode(3);
+        src.getArrayItemNode().connect(dest.getArrayItemNode());
+    }
+}

teavm-classlib/src/main/java/org/teavm/classlib/java/lang/TException.java

@@ -0,0 +1,9 @@
+package org.teavm.classlib.java.lang;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public class TException extends TThrowable {
+    private static final long serialVersionUID = -2188339106250208952L;
+}

teavm-classlib/src/main/java/org/teavm/classlib/java/lang/TObject.java

@@ -31,6 +31,9 @@ public class TObject {
     @GeneratedBy(ObjectNativeGenerator.class)
     public native boolean equals(TObject other);
 
+    @Rename("toString")
+    public native TString toString0();
+
     @Override
     @GeneratedBy(ObjectNativeGenerator.class)
     @PluggableDependency(ObjectNativeGenerator.class)

teavm-classlib/src/main/java/org/teavm/classlib/java/lang/TObjectTests.java

@@ -45,4 +45,9 @@ class TObjectTests {
     public void properInstanceDetected() {
         assertTrue(Object.class.isInstance(new Object()));
     }
+
+    @Test
+    public void alwaysFails() {
+        fail();
+    }
 }

teavm-classlib/src/main/java/org/teavm/classlib/java/lang/TString.java

@@ -1,9 +1,36 @@
 package org.teavm.classlib.java.lang;
 
+import org.teavm.javascript.ni.GeneratedBy;
+
 /**
  *
  * @author Alexey Andreev <konsoletyper@gmail.com>
  */
-public class TString {
+public class TString extends TObject {
+    private char[] characters;
 
+    public TString() {
+        this.characters = new char[0];
+    }
+
+    public TString(TString other) {
+        characters = other.characters;
+    }
+
+    public TString(char[] characters) {
+        this.characters = new char[characters.length];
+        for (int i = 0; i < characters.length; ++i) {
+            this.characters[i] = characters[i];
+        }
+    }
+
+    public TString(char[] value, int offset, int count) {
+        this.characters = new char[count];
+        for (int i = 0; i < count; ++i) {
+            this.characters[i] = value[i + offset];
+        }
+    }
+
+    @GeneratedBy(StringNativeGenerator.class)
+    public static native TString wrap(String str);
 }

teavm-classlib/src/main/java/org/teavm/classlib/java/lang/TSystem.java

@@ -0,0 +1,19 @@
+package org.teavm.classlib.java.lang;
+
+import org.teavm.javascript.ni.GeneratedBy;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public final class TSystem extends TObject {
+    private TSystem() {
+    }
+
+    public static void arraycopy(Object src, int srcPos, Object dest, int destPos, int length) {
+        doArrayCopy(src, srcPos, dest, destPos, length);
+    }
+
+    @GeneratedBy(SystemNativeGenerator.class)
+    private static native void doArrayCopy(Object src, int srcPos, Object dest, int destPos, int length);
+}

teavm-classlib/src/main/java/org/teavm/classlib/java/lang/TSystemTests.java

@@ -0,0 +1,22 @@
+package org.teavm.classlib.java.lang;
+
+import static org.junit.Assert.*;
+import org.junit.Test;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+class TSystemTests {
+    @Test
+    public void copiesArray() {
+        TObject a = new TObject();
+        TObject b = new TObject();
+        TObject[] src = { a, b, a };
+        TObject[] dest = new TObject[3];
+        TSystem.arraycopy(src, 0, dest, 0, 3);
+        assertSame(a, dest[0]);
+        assertSame(b, dest[1]);
+        assertSame(a, dest[2]);
+    }
+}

teavm-classlib/src/main/java/org/teavm/classlib/java/lang/TThrowable.java

@@ -6,4 +6,6 @@ package org.teavm.classlib.java.lang;
  */
 public class TThrowable extends Throwable {
     private static final long serialVersionUID = 2026791432677149320L;
+    private TString message;
+    private TThrowable cause;
 }

teavm-classlib/src/main/java/org/teavm/classlibgen/ClasslibTestGenerator.java

@@ -1,7 +1,9 @@
 package org.teavm.classlibgen;
 
+import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
+import java.io.PrintStream;
 import java.util.*;
 import org.apache.commons.io.IOUtils;
 import org.teavm.codegen.DefaultAliasProvider;
@@ -19,6 +21,7 @@ import org.teavm.model.resource.ClasspathClassHolderSource;
  * @author Alexey Andreev <konsoletyper@gmail.com>
  */
 public class ClasslibTestGenerator {
+    private static PrintStream out;
     private static ClasspathClassHolderSource classSource;
     private static Decompiler decompiler;
     private static DefaultAliasProvider aliasProvider;
@@ -27,9 +30,13 @@ public class ClasslibTestGenerator {
     private static Renderer renderer;
     private static List<MethodReference> testMethods = new ArrayList<>();
     private static Map<String, List<MethodReference>> groupedMethods = new HashMap<>();
-    private static String[] testClasses = { "java.lang.ObjectTests" };
+    private static String[] testClasses = { "java.lang.ObjectTests", "java.lang.SystemTests" };
 
     public static void main(String[] args) throws IOException {
+        out = System.out;
+        if (args.length > 0) {
+            out = new PrintStream(new FileOutputStream(args[0]));
+        }
         classSource = new ClasspathClassHolderSource();
         decompiler = new Decompiler(classSource);
         aliasProvider = new DefaultAliasProvider();
@@ -52,15 +59,16 @@ public class ClasslibTestGenerator {
         renderHead();
         ClassLoader classLoader = ClasslibTestGenerator.class.getClassLoader();
         try (InputStream input = classLoader.getResourceAsStream("org/teavm/classlib/junit-support.js")) {
-            System.out.println(IOUtils.toString(input));
+            out.println(IOUtils.toString(input));
         }
         try (InputStream input = classLoader.getResourceAsStream("org/teavm/javascript/runtime.js")) {
-            System.out.println(IOUtils.toString(input));
+            out.println(IOUtils.toString(input));
         }
+        renderer.renderRuntime();
         for (String testClass : testClasses) {
             renderClassTest(classSource.getClassHolder(testClass));
         }
-        System.out.println(writer);
+        out.println(writer);
         renderFoot();
     }
 
@@ -72,21 +80,21 @@ public class ClasslibTestGenerator {
     }
 
     private static void renderHead() {
-        System.out.println("<!DOCTYPE html>");
+        out.println("<!DOCTYPE html>");
-        System.out.println("<html>");
+        out.println("<html>");
-        System.out.println("  <head>");
+        out.println("  <head>");
-        System.out.println("    <title>TeaVM JUnit tests</title>");
+        out.println("    <title>TeaVM JUnit tests</title>");
-        System.out.println("    <meta http-equiv=\"Content-Type\" content=\"text/html;charset=UTF-8\"/>");
+        out.println("    <meta http-equiv=\"Content-Type\" content=\"text/html;charset=UTF-8\"/>");
-        System.out.println("    <title>TeaVM JUnit tests</title>");
+        out.println("    <title>TeaVM JUnit tests</title>");
-        System.out.println("  </head>");
+        out.println("  </head>");
-        System.out.println("  <body>");
+        out.println("  <body>");
-        System.out.println("    <script type=\"text/javascript\">");
+        out.println("    <script type=\"text/javascript\">");
     }
 
     private static void renderFoot() {
-        System.out.println("    </script>");
+        out.println("    </script>");
-        System.out.println("  </body>");
+        out.println("  </body>");
-        System.out.println("</html>");
+        out.println("</html>");
     }
 
     private static void renderClassTest(ClassHolder cls) {

teavm-classlib/src/main/resources/org/teavm/classlib/junit-support.js

@@ -19,10 +19,14 @@ runTestCase = function(instance, methodName, realMethodName) {
     } catch (e) {
         if (e instanceof JUnitAssertionFailure) {
             statusCell.appendChild(document.createTextNode("assertion failed"));
-            exceptionCell.appendChild(document.createTextNode(e.stack));
+            var exceptionText = document.createElement("pre");
+            exceptionText.appendChild(document.createTextNode(e.stack));
+            exceptionCell.appendChild(exceptionText);
         } else {
             statusCell.appendChild(document.createTextNode("unexpected exception"));
-            exceptionCell.appendChild(document.createTextNode(e.stack));
+            var exceptionText = document.createElement("pre");
+            exceptionText.appendChild(document.createTextNode(e.stack));
+            exceptionCell.appendChild(exceptionText);
         }
     }
 }

teavm-core/src/main/java/org/teavm/codegen/ConcurrentCachedMapper.java

@@ -40,15 +40,17 @@ public class ConcurrentCachedMapper<T, R> implements Mapper<T, R> {
                     listener.keyAdded(preimage);
                 }
             } else {
-                CountDownLatch latch = oldWrapper.latch;
                 wrapper = oldWrapper;
+            }
+        }
+        CountDownLatch latch = wrapper.latch;
+        if (latch != null) {
             try {
                 latch.await();
             } catch (InterruptedException e) {
                 Thread.currentThread().interrupt();
             }
         }
-        }
         return wrapper.value;
     }
 

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

@@ -76,6 +76,9 @@ public class DependencyNode {
                 arrayItemNodeLatch.countDown();
                 arrayItemNodeLatch = null;
             } else {
+                result = arrayItemNode.get();
+            }
+        }
         CountDownLatch latch = arrayItemNodeLatch;
         if (latch != null) {
             try {
@@ -85,9 +88,6 @@ public class DependencyNode {
                 return result;
             }
         }
-                result = arrayItemNode.get();
-            }
-        }
         return result;
     }
 

teavm-core/src/main/java/org/teavm/javascript/Renderer.java

@@ -45,6 +45,26 @@ public class Renderer implements ExprVisitor, StatementVisitor {
         return naming;
     }
 
+    public void renderRuntime() {
+        renderRuntimeCls();
+    }
+
+    private void renderRuntimeCls() {
+        writer.append("$rt_cls = function(cls) {").indent().newLine();
+        String classClass = "java.lang.Class";
+        writer.append("var cls = cls.classObject;").newLine();
+        writer.append("if (cls === undefined) {").newLine().indent();
+        MethodReference createMethodRef = new MethodReference(classClass, new MethodDescriptor("createNew",
+                ValueType.object(classClass)));
+        writer.append("cls = ").appendClass(classClass).append('.').appendMethod(createMethodRef)
+                .append("();").newLine();
+        writer.append("cls.$data = cls;").newLine();
+        writer.append("cls.classObject = cls;").newLine();
+        writer.outdent().append("}").newLine();
+        writer.append("return cls;").newLine();
+        writer.outdent().append("}").newLine();
+    }
+
     public void render(ClassNode cls) {
         writer.appendClass(cls.getName()).append(" = function() {").indent().newLine();
         for (FieldNode field : cls.getFields()) {

teavm-core/src/main/resources/org/teavm/javascript/runtime.js

@@ -20,6 +20,26 @@ $rt_isAssignable = function(from, to) {
     }
     return false;
 }
+$rt_createArray = function(cls, sz) {
+    var arr = new Array(sz);
+    arr.$class = $rt_arraycls(cls);
+    arr.$id = $rt_lastObjectId++;
+    for (var i = 0; i < sz; i = (i + 1) | 0) {
+        arr[i] = null;
+    }
+    return arr;
+}
+$rt_arraycls = function(cls) {
+    if (cls.$array == undefined) {
+        cls.$array = {
+            $meta : { item : cls },
+        };
+        if ($rt.objcls) {
+            cls.$array.$meta.supertypes = [$rt.objcls()];
+        }
+    }
+    return cls.$array;
+}
 
 $rt = {
     createBooleanArray : function(cls, sz) {
@@ -43,15 +63,6 @@ $rt = {
         }
         return arr;
     },
-    createArray : function(cls, sz) {
-        var arr = new Array(sz);
-        arr.$class = $rt.arraycls(cls);
-        arr.$id = $rt.lastObjectId++;
-        for (var i = 0; i < sz; i = (i + 1) | 0) {
-            arr[i] = null;
-        }
-        return arr;
-    },
     createMultiArray : function(cls, dimensions) {
         for (var i = 1; i < dimensions.length; i = (i + 1) | 0) {
             cls = $rt.arraycls(cls);
@@ -75,17 +86,6 @@ $rt = {
         $rt.setId(arr, $rt.lastObjectId++);
         return arr;
     },
-    arraycls : function(cls) {
-        if (cls.$array == undefined) {
-            cls.$array = {
-                $meta : { item : cls },
-            };
-            if ($rt.objcls) {
-                cls.$array.$meta.supertypes = [$rt.objcls()];
-            }
-        }
-        return cls.$array;
-    },
     createcls : function() {
         return {
             $meta : {