Fully-qualified names of Java elements supported

idea/src/org/jetbrains/jet/codegen/NamespaceCodegen.java

@@ -2,19 +2,16 @@ package org.jetbrains.jet.codegen;
 
 import com.intellij.openapi.project.Project;
 import org.jetbrains.jet.lang.ErrorHandler;
-import org.jetbrains.jet.lang.JetSemanticServices;
 import org.jetbrains.jet.lang.psi.JetDeclaration;
 import org.jetbrains.jet.lang.psi.JetFunction;
 import org.jetbrains.jet.lang.psi.JetNamespace;
 import org.jetbrains.jet.lang.psi.JetProperty;
-import org.jetbrains.jet.lang.resolve.*;
-import org.jetbrains.jet.lang.resolve.java.JavaLangScope;
-import org.jetbrains.jet.lang.resolve.java.JavaSemanticServices;
+import org.jetbrains.jet.lang.resolve.AnalyzingUtils;
+import org.jetbrains.jet.lang.resolve.BindingContext;
+import org.jetbrains.jet.lang.types.JetStandardLibrary;
 import org.objectweb.asm.ClassVisitor;
 import org.objectweb.asm.Opcodes;
 
-import java.util.List;
-
 /**
  * @author max
  */
@@ -23,17 +20,10 @@ public class NamespaceCodegen {
     }
 
     public void generate(JetNamespace namespace, ClassVisitor v, Project project) {
-        List<JetDeclaration> declarations = namespace.getDeclarations();
-
-        JetSemanticServices semanticServices = JetSemanticServices.createSemanticServices(project, ErrorHandler.THROW_EXCEPTION);
-        BindingTraceContext bindingTraceContext = new BindingTraceContext();
-        ScopeWithImports scope = new ScopeWithImports(semanticServices.getStandardLibrary().getLibraryScope());
-        scope.addImport(new JavaLangScope(new JavaSemanticServices(project, semanticServices, bindingTraceContext)));
-        new TopDownAnalyzer(semanticServices, bindingTraceContext).process(scope, declarations);
-        BindingContext bindingContext = bindingTraceContext;
+        BindingContext bindingContext = AnalyzingUtils.analyzeNamespace(namespace, ErrorHandler.THROW_EXCEPTION);
 
         final PropertyCodegen propertyCodegen = new PropertyCodegen(v);
-        final FunctionCodegen functionCodegen = new FunctionCodegen(v, semanticServices.getStandardLibrary(), bindingContext);
+        final FunctionCodegen functionCodegen = new FunctionCodegen(v, JetStandardLibrary.getJetStandardLibrary(project), bindingContext);
         v.visit(Opcodes.V1_6,
                 Opcodes.ACC_PUBLIC,
                 getJVMClassName(namespace),

idea/src/org/jetbrains/jet/lang/ErrorHandler.java

@@ -1,5 +1,6 @@
 package org.jetbrains.jet.lang;
 
+import com.intellij.lang.ASTNode;
 import org.jetbrains.jet.lang.psi.JetReferenceExpression;
 
 /**
@@ -12,8 +13,16 @@ public class ErrorHandler {
         public void unresolvedReference(JetReferenceExpression referenceExpression) {
             throw new IllegalStateException("Unresolved reference: " + referenceExpression.getReferencedName());
         }
+
+        @Override
+        public void structuralError(ASTNode node, String errorMessage) {
+            throw new IllegalStateException(errorMessage);
+        }
     };
 
     public void unresolvedReference(JetReferenceExpression referenceExpression) {
     }
+
+    public void structuralError(ASTNode node, String errorMessage) {
+    }
 }

idea/src/org/jetbrains/jet/lang/JetSemanticServices.java

@@ -15,7 +15,7 @@ public class JetSemanticServices {
     }
 
     public static JetSemanticServices createSemanticServices(Project project, ErrorHandler errorHandler) {
-        return new JetSemanticServices(new JetStandardLibrary(project), errorHandler);
+        return new JetSemanticServices(JetStandardLibrary.getJetStandardLibrary(project), errorHandler);
     }
 
     private final JetTypeInferrer typeInferrer;

idea/src/org/jetbrains/jet/lang/annotations/JetPsiChecker.java

@@ -7,14 +7,9 @@ import com.intellij.openapi.util.TextRange;
 import com.intellij.psi.PsiElement;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.jet.lang.ErrorHandler;
-import org.jetbrains.jet.lang.JetSemanticServices;
 import org.jetbrains.jet.lang.psi.*;
+import org.jetbrains.jet.lang.resolve.AnalyzingUtils;
 import org.jetbrains.jet.lang.resolve.BindingContext;
-import org.jetbrains.jet.lang.resolve.BindingTraceContext;
-import org.jetbrains.jet.lang.resolve.ScopeWithImports;
-import org.jetbrains.jet.lang.resolve.TopDownAnalyzer;
-import org.jetbrains.jet.lang.resolve.java.JavaLangScope;
-import org.jetbrains.jet.lang.resolve.java.JavaSemanticServices;
 import org.jetbrains.jet.lang.types.Type;
 
 /**
@@ -28,20 +23,13 @@ public class JetPsiChecker implements Annotator {
             Project project = element.getProject();
 
             JetFile file = (JetFile) element;
-            JetSemanticServices semanticServices = JetSemanticServices.createSemanticServices(element.getProject(), new ErrorHandler() {
-                @Override
-                public void unresolvedReference(JetReferenceExpression referenceExpression) {
-                    holder.createErrorAnnotation(referenceExpression, "Unresolved");
-                }
-            });
             try {
-                ScopeWithImports scope = new ScopeWithImports(semanticServices.getStandardLibrary().getLibraryScope());
-                BindingTraceContext bindingTraceContext = new BindingTraceContext();
-                scope.addImport(new JavaLangScope(new JavaSemanticServices(project, semanticServices, bindingTraceContext)));
-                new TopDownAnalyzer(semanticServices, bindingTraceContext).process(
-                        scope,
-                        file.getRootNamespace().getDeclarations());
-                final BindingContext bindingContext = bindingTraceContext;
+                final BindingContext bindingContext = AnalyzingUtils.analyzeFile(file, new ErrorHandler() {
+                    @Override
+                    public void unresolvedReference(JetReferenceExpression referenceExpression) {
+                        holder.createErrorAnnotation(referenceExpression, "Unresolved");
+                    }
+                });
                 file.getRootNamespace().accept(new JetVisitor() {
                     @Override
                     public void visitClass(JetClass klass) {

idea/src/org/jetbrains/jet/lang/psi/JetImportDirective.java

@@ -35,22 +35,30 @@ public class JetImportDirective extends JetElement {
     }
 
     @Nullable
-    public String getAliasName() {
+    private ASTNode getAliasNameNode() {
         boolean asPassed = false;
         ASTNode childNode = getNode().getFirstChildNode();
         while (childNode != null) {
             IElementType tt = childNode.getElementType();
             if (tt == JetTokens.AS_KEYWORD) asPassed = true;
             if (asPassed && tt == JetTokens.IDENTIFIER) {
-                return childNode.getText();
+                return childNode;
             }
 
             childNode = childNode.getTreeNext();
         }
-
         return null;
     }
 
+    @Nullable
+    public String getAliasName() {
+        ASTNode aliasNameNode = getAliasNameNode();
+        if (aliasNameNode == null) {
+            return null;
+        }
+        return aliasNameNode.getText();
+    }
+
     public boolean isAllUnder() {
         return getNode().findChildByType(JetTokens.MAP) != null;
     }

idea/src/org/jetbrains/jet/lang/psi/JetReferenceExpression.java

@@ -9,13 +9,7 @@ import com.intellij.util.IncorrectOperationException;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.jetbrains.jet.lang.ErrorHandler;
-import org.jetbrains.jet.lang.JetSemanticServices;
-import org.jetbrains.jet.lang.resolve.BindingContext;
-import org.jetbrains.jet.lang.resolve.BindingTraceContext;
-import org.jetbrains.jet.lang.resolve.ScopeWithImports;
-import org.jetbrains.jet.lang.resolve.TopDownAnalyzer;
-import org.jetbrains.jet.lang.resolve.java.JavaLangScope;
-import org.jetbrains.jet.lang.resolve.java.JavaSemanticServices;
+import org.jetbrains.jet.lang.resolve.*;
 import org.jetbrains.jet.lexer.JetTokens;
 
 /**
@@ -71,15 +65,7 @@ public class JetReferenceExpression extends JetExpression {
                     element = element.getParent();
                 }
                 JetFile file = (JetFile) element;
-                JetSemanticServices semanticServices = JetSemanticServices.createSemanticServices(element.getProject(), ErrorHandler.DO_NOTHING);
-
-                ScopeWithImports scope = new ScopeWithImports(semanticServices.getStandardLibrary().getLibraryScope());
-
-                BindingTraceContext bindingTraceContext = new BindingTraceContext();
-                scope.addImport(new JavaLangScope(new JavaSemanticServices(element.getProject(), semanticServices, bindingTraceContext)));
-
-                new TopDownAnalyzer(semanticServices, bindingTraceContext).process(scope, file.getRootNamespace().getDeclarations());
-                BindingContext bindingContext = bindingTraceContext;
+                BindingContext bindingContext = AnalyzingUtils.analyzeFile(file, ErrorHandler.DO_NOTHING);
                 return bindingContext.resolveToDeclarationPsiElement(JetReferenceExpression.this);
             }
 
@@ -116,4 +102,5 @@ public class JetReferenceExpression extends JetExpression {
             }
         };
     }
+
 }

idea/src/org/jetbrains/jet/lang/resolve/AnalyzingUtils.java

@@ -0,0 +1,35 @@
+package org.jetbrains.jet.lang.resolve;
+
+import com.intellij.openapi.project.Project;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.jet.lang.ErrorHandler;
+import org.jetbrains.jet.lang.JetSemanticServices;
+import org.jetbrains.jet.lang.psi.JetFile;
+import org.jetbrains.jet.lang.psi.JetNamespace;
+import org.jetbrains.jet.lang.resolve.java.JavaPackageScope;
+import org.jetbrains.jet.lang.resolve.java.JavaSemanticServices;
+
+/**
+ * @author abreslav
+ */
+public class AnalyzingUtils {
+    public static BindingContext analyzeFile(@NotNull JetFile file, @NotNull ErrorHandler errorHandler) {
+        JetNamespace rootNamespace = file.getRootNamespace();
+        return analyzeNamespace(rootNamespace, errorHandler);
+    }
+
+    public static BindingContext analyzeNamespace(@NotNull JetNamespace namespace, @NotNull ErrorHandler errorHandler) {
+        Project project = namespace.getProject();
+        JetSemanticServices semanticServices = JetSemanticServices.createSemanticServices(project, errorHandler);
+
+        BindingTraceContext bindingTraceContext = new BindingTraceContext();
+        JavaSemanticServices javaSemanticServices = new JavaSemanticServices(project, semanticServices, bindingTraceContext);
+
+        ScopeWithImports scope = new ScopeWithImports(semanticServices.getStandardLibrary().getLibraryScope());
+        scope.importScope(new JavaPackageScope("", javaSemanticServices));
+        scope.importScope(new JavaPackageScope("java.lang", javaSemanticServices));
+
+        new TopDownAnalyzer(semanticServices, bindingTraceContext).process(scope, namespace);
+        return bindingTraceContext;
+    }
+}

idea/src/org/jetbrains/jet/lang/resolve/ScopeWithImports.java

@@ -18,7 +18,7 @@ public class ScopeWithImports implements JetScope {
         this.scope = scope;
     }
 
-    public void addImport(JetScope imported) {
+    public void importScope(JetScope imported) {
         imports.add(0, imported);
     }
 
@@ -68,18 +68,18 @@ public class ScopeWithImports implements JetScope {
 
     @Override
     public TypeParameterDescriptor getTypeParameter(@NotNull String name) {
-        throw new UnsupportedOperationException(); // TODO
+        return scope.getTypeParameter(name);
     }
 
     @NotNull
     @Override
     public Type getThisType() {
-        throw new UnsupportedOperationException(); // TODO
+        return scope.getThisType();
     }
 
     @NotNull
     @Override
     public FunctionGroup getFunctionGroup(@NotNull String name) {
-        throw new UnsupportedOperationException(); // TODO
+        return scope.getFunctionGroup(name); // TODO
     }
 }

idea/src/org/jetbrains/jet/lang/resolve/ScopeWithReceiver.java

@@ -34,7 +34,7 @@ public class ScopeWithReceiver extends JetScopeImpl {
 
     @Override
     public NamespaceDescriptor getNamespace(@NotNull String name) {
-        return outerScope.getNamespace(name);
+        return receiverTypeScope.getNamespace(name);
     }
 
     @Override

idea/src/org/jetbrains/jet/lang/resolve/TopDownAnalyzer.java

@@ -5,10 +5,7 @@ import org.jetbrains.jet.lang.JetSemanticServices;
 import org.jetbrains.jet.lang.psi.*;
 import org.jetbrains.jet.lang.types.*;
 
-import java.util.HashMap;
-import java.util.LinkedHashMap;
-import java.util.List;
-import java.util.Map;
+import java.util.*;
 
 /**
  * @author abreslav
@@ -29,6 +26,10 @@ public class TopDownAnalyzer {
         this.trace = bindingTrace;
     }
 
+    public void process(@NotNull JetScope outerScope, @NotNull JetDeclaration declaration) {
+        process(outerScope, Collections.singletonList(declaration));
+    }
+
     public void process(@NotNull JetScope outerScope, @NotNull List<JetDeclaration> declarations) {
         final WritableScope toplevelScope = new WritableScope(outerScope);
         trace.setToplevelScope(toplevelScope); // TODO : this is a hack
@@ -51,6 +52,27 @@ public class TopDownAnalyzer {
                     collectTypeDeclarators(classScope, klass.getDeclarations());
                 }
 
+                @Override
+                public void visitNamespace(JetNamespace namespace) {
+                    List<JetImportDirective> importDirectives = namespace.getImportDirectives();
+
+                    ScopeWithImports scopeWithImports = new ScopeWithImports(declaringScope);
+
+                    for (JetImportDirective importDirective : importDirectives) {
+//                        if (importDirective.isAllUnder()) {
+//                            // TODO: this works only for Java,
+//                            //       but should thoroughly resolve qualified names item-by-item
+//                            //       taking previous imports into account
+//                            String importedName = importDirective.getImportedName();
+//                            scopeWithImports.importScope(new JavaPackageScope(importedName, ));
+//                        } else {
+//                            throw new UnsupportedOperationException();
+//                        }
+                    }
+                    WritableScope namespaceScope = new WritableScope(scopeWithImports);
+                    collectTypeDeclarators(namespaceScope, namespace.getDeclarations());
+                }
+
                 @Override
                 public void visitTypedef(JetTypedef typedef) {
                     processTypeDef(typedef);
@@ -67,10 +89,13 @@ public class TopDownAnalyzer {
     private WritableScope processClass(@NotNull WritableScope declaringScope, JetClass klass) {
         MutableClassDescriptor mutableClassDescriptor = new MutableClassDescriptor(declaringScope);
         mutableClassDescriptor.setName(klass.getName());
+
         declaringScope.addClassDescriptor(mutableClassDescriptor);
+
         classes.put(klass, mutableClassDescriptor);
         trace.recordDeclarationResolution(klass, mutableClassDescriptor);
         declaringScopes.put(klass, declaringScope);
+
         return mutableClassDescriptor.getUnsubstitutedMemberScope();
     }
 

idea/src/org/jetbrains/jet/lang/resolve/java/JavaDescriptorResolver.java

@@ -73,14 +73,29 @@ public class JavaDescriptorResolver {
 
             PsiClass psiClass = javaFacade.findClass(qualifiedName, javaSearchScope);
             if (psiClass == null) {
-                return null;
+                PsiPackage psiPackage = javaFacade.findPackage(qualifiedName);
+                if (psiPackage == null) {
+                    return null;
+                }
+                namespaceDescriptor = createJavaNamespaceDescriptor(psiPackage);
+            } else {
+                namespaceDescriptor = createJavaNamespaceDescriptor(psiClass);
             }
-            namespaceDescriptor = createJavaNamespaceDescriptor(psiClass);
             namespaceDescriptorCache.put(qualifiedName, namespaceDescriptor);
         }
         return namespaceDescriptor;
     }
 
+    private NamespaceDescriptor createJavaNamespaceDescriptor(PsiPackage psiPackage) {
+        NamespaceDescriptor namespaceDescriptor = new NamespaceDescriptor(
+                Collections.<Attribute>emptyList(), // TODO
+                psiPackage.getName(),
+                new JavaPackageScope(psiPackage.getQualifiedName(), semanticServices)
+        );
+        semanticServices.getTrace().recordDeclarationResolution(psiPackage, namespaceDescriptor);
+        return namespaceDescriptor;
+    }
+
     private NamespaceDescriptor createJavaNamespaceDescriptor(@NotNull PsiClass psiClass) {
         NamespaceDescriptor namespaceDescriptor = new NamespaceDescriptor(
                 Collections.<Attribute>emptyList(), // TODO

idea/src/org/jetbrains/jet/lang/resolve/java/JavaPackageScope.java

@@ -8,12 +8,14 @@ import org.jetbrains.jet.lang.types.NamespaceDescriptor;
 /**
  * @author abreslav
  */
-public class JavaLangScope extends JetScopeImpl {
+public class JavaPackageScope extends JetScopeImpl {
 
     private final JavaSemanticServices semanticServices;
+    private String packagePrefix;
 
-    public JavaLangScope(JavaSemanticServices semanticServices) {
+    public JavaPackageScope(@NotNull String packageFQN, JavaSemanticServices semanticServices) {
         this.semanticServices = semanticServices;
+        this.packagePrefix = packageFQN.isEmpty() ? "" : packageFQN + ".";
     }
 
     @Override
@@ -27,6 +29,6 @@ public class JavaLangScope extends JetScopeImpl {
     }
 
     private String getQualifiedName(String name) {
-        return "java.lang." + name;
+        return packagePrefix + name;
     }
 }

idea/src/org/jetbrains/jet/lang/types/JetStandardLibrary.java

@@ -16,14 +16,27 @@ import org.jetbrains.jet.lang.resolve.TopDownAnalyzer;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
+import java.util.HashMap;
+import java.util.Map;
 
 /**
  * @author abreslav
  */
 public class JetStandardLibrary {
 
-    private final JetScope libraryScope;
+    // TODO : consider releasing this memory
+    private static final Map<Project, JetStandardLibrary> standardLibraryCache = new HashMap<Project, JetStandardLibrary>();
 
+    public static JetStandardLibrary getJetStandardLibrary(@NotNull Project project) {
+        JetStandardLibrary standardLibrary = standardLibraryCache.get(project);
+        if (standardLibrary == null) {
+            standardLibrary = new JetStandardLibrary(project);
+            standardLibraryCache.put(project, standardLibrary);
+        }
+        return standardLibrary;
+    }
+
+    private final JetScope libraryScope;
     private final ClassDescriptor byteClass;
     private final ClassDescriptor charClass;
     private final ClassDescriptor shortClass;
@@ -44,7 +57,7 @@ public class JetStandardLibrary {
     private final Type booleanType;
     private final Type stringType;
 
-    public JetStandardLibrary(@NotNull Project project) {
+    private JetStandardLibrary(@NotNull Project project) {
         // TODO : review
         InputStream stream = JetStandardClasses.class.getClassLoader().getResourceAsStream("jet/lang/Library.jet");
         try {

idea/src/org/jetbrains/jet/lang/types/JetTypeInferrer.java

@@ -381,8 +381,10 @@ public class JetTypeInferrer {
                     JetReferenceExpression referenceExpression = (JetReferenceExpression) selectorExpression;
 
                     Type receiverType = getType(scope, expression.getReceiverExpression(), false);
-                    result[0] = OverloadResolver.INSTANCE.getOverloadDomain(receiverType, scope, referenceExpression.getReferencedName());
-                    reference[0] = referenceExpression;
+                    if (receiverType != null) {
+                        result[0] = OverloadResolver.INSTANCE.getOverloadDomain(receiverType, scope, referenceExpression.getReferencedName());
+                        reference[0] = referenceExpression;
+                    }
                 } else {
                     throw new UnsupportedOperationException(); // TODO
                 }
@@ -406,6 +408,7 @@ public class JetTypeInferrer {
                 throw new IllegalArgumentException("Unsupported element: " + elem);
             }
         });
+        if (result[0] == null) return OverloadDomain.EMPTY;
         return new OverloadDomain() {
             @Override
             public FunctionDescriptor getFunctionDescriptorForNamedArguments(@NotNull List<Type> typeArguments, @NotNull Map<String, Type> valueArgumentTypes, @Nullable Type functionLiteralArgumentType) {

idea/tests/org/jetbrains/jet/resolve/ExpectedResolveData.java

@@ -6,9 +6,8 @@ import com.intellij.psi.PsiElement;
 import org.jetbrains.jet.lang.ErrorHandler;
 import org.jetbrains.jet.lang.JetSemanticServices;
 import org.jetbrains.jet.lang.psi.*;
+import org.jetbrains.jet.lang.resolve.AnalyzingUtils;
 import org.jetbrains.jet.lang.resolve.BindingContext;
-import org.jetbrains.jet.lang.resolve.BindingTraceContext;
-import org.jetbrains.jet.lang.resolve.TopDownAnalyzer;
 import org.jetbrains.jet.lang.types.*;
 
 import java.util.Collection;
@@ -77,10 +76,7 @@ public class ExpectedResolveData {
         Map<String, DeclarationDescriptor> nameToDescriptor = new HashMap<String, DeclarationDescriptor>();
         nameToDescriptor.put("std::Int.plus(Int)", standardFunction(lib.getInt(), "plus", lib.getIntType()));
 
-        BindingTraceContext bindingTraceContext = new BindingTraceContext();
-        TopDownAnalyzer topDownAnalyzer = new TopDownAnalyzer(semanticServices, bindingTraceContext);
-        topDownAnalyzer.process(lib.getLibraryScope(), file.getRootNamespace().getDeclarations());
-        BindingContext bindingContext = bindingTraceContext;
+        BindingContext bindingContext = AnalyzingUtils.analyzeFile(file, ErrorHandler.THROW_EXCEPTION);
 
         Map<String, JetDeclaration> nameToDeclaration = new HashMap<String, JetDeclaration>();
 

idea/tests/org/jetbrains/jet/types/JetTypeCheckerTest.java

@@ -32,7 +32,7 @@ public class JetTypeCheckerTest extends LightDaemonAnalyzerTestCase {
     @Override
     public void setUp() throws Exception {
         super.setUp();
-        library          = new JetStandardLibrary(getProject());
+        library          = JetStandardLibrary.getJetStandardLibrary(getProject());
         semanticServices = JetSemanticServices.createSemanticServices(library, ErrorHandler.DO_NOTHING);
         classDefinitions = new ClassDefinitions();
         classDescriptorResolver = semanticServices.getClassDescriptorResolver(BindingTrace.DUMMY);