bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/compilation/Elaboration.java

   1 package org.simantics.scl.compiler.compilation;
   2
   3 import java.util.ArrayList;
   4 import java.util.Iterator;
   5 import java.util.List;
   6
   7 import org.cojen.classfile.TypeDesc;
   8 import org.simantics.scl.compiler.common.datatypes.Constructor;
   9 import org.simantics.scl.compiler.common.names.Name;
  10 import org.simantics.scl.compiler.constants.JavaTypeInstanceConstructor;
  11 import org.simantics.scl.compiler.constants.SCLConstructor;
  12 import org.simantics.scl.compiler.constants.StringConstant;
  13 import org.simantics.scl.compiler.constants.generic.CallJava;
  14 import org.simantics.scl.compiler.constants.generic.ClassRef;
  15 import org.simantics.scl.compiler.constants.generic.ConvertToListFilter;
  16 import org.simantics.scl.compiler.constants.generic.MethodRef;
  17 import org.simantics.scl.compiler.constants.generic.OutputFilter;
  18 import org.simantics.scl.compiler.constants.generic.ParameterStackItem;
  19 import org.simantics.scl.compiler.constants.generic.Pop2OutputFilter;
  20 import org.simantics.scl.compiler.constants.generic.PopOutputFilter;
  21 import org.simantics.scl.compiler.constants.generic.StackItem;
  22 import org.simantics.scl.compiler.constants.generic.ThreadLocalStackItem;
  23 import org.simantics.scl.compiler.elaboration.contexts.TranslationContext;
  24 import org.simantics.scl.compiler.elaboration.contexts.TypeTranslationContext;
  25 import org.simantics.scl.compiler.elaboration.errors.NotPatternException;
  26 import org.simantics.scl.compiler.elaboration.expressions.EApply;
  27 import org.simantics.scl.compiler.elaboration.expressions.EGetConstraint;
  28 import org.simantics.scl.compiler.elaboration.expressions.EIntegerLiteral;
  29 import org.simantics.scl.compiler.elaboration.expressions.EListLiteral;
  30 import org.simantics.scl.compiler.elaboration.expressions.ELiteral;
  31 import org.simantics.scl.compiler.elaboration.expressions.EVar;
  32 import org.simantics.scl.compiler.elaboration.expressions.Expression;
  33 import org.simantics.scl.compiler.elaboration.expressions.Variable;
  34 import org.simantics.scl.compiler.elaboration.expressions.annotations.AnnotationUtils;
  35 import org.simantics.scl.compiler.elaboration.fundeps.Fundep;
  36 import org.simantics.scl.compiler.elaboration.java.JavaMethodDeclaration;
  37 import org.simantics.scl.compiler.elaboration.macros.StandardMacroRule;
  38 import org.simantics.scl.compiler.elaboration.modules.DeprecatedProperty;
  39 import org.simantics.scl.compiler.elaboration.modules.InlineProperty;
  40 import org.simantics.scl.compiler.elaboration.modules.MethodImplementation;
  41 import org.simantics.scl.compiler.elaboration.modules.PrivateProperty;
  42 import org.simantics.scl.compiler.elaboration.modules.SCLValue;
  43 import org.simantics.scl.compiler.elaboration.modules.TypeAlias;
  44 import org.simantics.scl.compiler.elaboration.modules.TypeClass;
  45 import org.simantics.scl.compiler.elaboration.modules.TypeClassInstance;
  46 import org.simantics.scl.compiler.elaboration.modules.TypeClassMethod;
  47 import org.simantics.scl.compiler.elaboration.query.Query;
  48 import org.simantics.scl.compiler.elaboration.query.pre.QPreGuard;
  49 import org.simantics.scl.compiler.elaboration.relations.ConcreteRelation;
  50 import org.simantics.scl.compiler.elaboration.rules.MappingRelation;
  51 import org.simantics.scl.compiler.elaboration.rules.SectionName;
  52 import org.simantics.scl.compiler.elaboration.rules.TransformationRule;
  53 import org.simantics.scl.compiler.environment.AmbiguousNameException;
  54 import org.simantics.scl.compiler.environment.Environment;
  55 import org.simantics.scl.compiler.environment.EnvironmentFactory;
  56 import org.simantics.scl.compiler.environment.Environments;
  57 import org.simantics.scl.compiler.errors.ErrorLog;
  58 import org.simantics.scl.compiler.errors.Locations;
  59 import org.simantics.scl.compiler.internal.codegen.effects.EffectConstructor;
  60 import org.simantics.scl.compiler.internal.codegen.effects.ThreadLocalVariable;
  61 import org.simantics.scl.compiler.internal.codegen.types.JavaReferenceValidator;
  62 import org.simantics.scl.compiler.internal.codegen.types.JavaReferenceValidatorFactory;
  63 import org.simantics.scl.compiler.internal.codegen.types.JavaTypeTranslator;
  64 import org.simantics.scl.compiler.internal.codegen.types.StandardTypeConstructor;
  65 import org.simantics.scl.compiler.internal.codegen.utils.Constants;
  66 import org.simantics.scl.compiler.internal.codegen.utils.JavaNamingPolicy;
  67 import org.simantics.scl.compiler.internal.codegen.utils.MethodBuilderBase;
  68 import org.simantics.scl.compiler.internal.deriving.InstanceDeriver;
  69 import org.simantics.scl.compiler.internal.deriving.InstanceDerivers;
  70 import org.simantics.scl.compiler.internal.elaboration.profiling.BranchPointInjector;
  71 import org.simantics.scl.compiler.internal.elaboration.utils.StronglyConnectedComponents;
  72 import org.simantics.scl.compiler.internal.header.ModuleHeader;
  73 import org.simantics.scl.compiler.internal.parsing.declarations.ConstructorAst;
  74 import org.simantics.scl.compiler.internal.parsing.declarations.DAnnotationAst;
  75 import org.simantics.scl.compiler.internal.parsing.declarations.DClassAst;
  76 import org.simantics.scl.compiler.internal.parsing.declarations.DDataAst;
  77 import org.simantics.scl.compiler.internal.parsing.declarations.DDerivingInstanceAst;
  78 import org.simantics.scl.compiler.internal.parsing.declarations.DEffectAst;
  79 import org.simantics.scl.compiler.internal.parsing.declarations.DFixityAst;
  80 import org.simantics.scl.compiler.internal.parsing.declarations.DInstanceAst;
  81 import org.simantics.scl.compiler.internal.parsing.declarations.DMappingRelationAst;
  82 import org.simantics.scl.compiler.internal.parsing.declarations.DRelationAst;
  83 import org.simantics.scl.compiler.internal.parsing.declarations.DRuleAst;
  84 import org.simantics.scl.compiler.internal.parsing.declarations.DTypeAst;
  85 import org.simantics.scl.compiler.internal.parsing.declarations.DValueAst;
  86 import org.simantics.scl.compiler.internal.parsing.declarations.DValueTypeAst;
  87 import org.simantics.scl.compiler.internal.parsing.exceptions.SCLSyntaxErrorException;
  88 import org.simantics.scl.compiler.internal.parsing.translation.ProcessedDClassAst;
  89 import org.simantics.scl.compiler.internal.parsing.translation.ProcessedDInstanceAst;
  90 import org.simantics.scl.compiler.internal.parsing.translation.RelationRepository;
  91 import org.simantics.scl.compiler.internal.parsing.translation.ValueRepository;
  92 import org.simantics.scl.compiler.internal.parsing.types.TypeAst;
  93 import org.simantics.scl.compiler.module.ConcreteModule;
  94 import org.simantics.scl.compiler.module.ImportDeclaration;
  95 import org.simantics.scl.compiler.module.InvalidModulePathException;
  96 import org.simantics.scl.compiler.module.ModuleUtils;
  97 import org.simantics.scl.compiler.module.repository.ImportFailure;
  98 import org.simantics.scl.compiler.module.repository.ImportFailureException;
  99 import org.simantics.scl.compiler.types.TCon;
 100 import org.simantics.scl.compiler.types.TForAll;
 101 import org.simantics.scl.compiler.types.TFun;
 102 import org.simantics.scl.compiler.types.TPred;
 103 import org.simantics.scl.compiler.types.TVar;
 104 import org.simantics.scl.compiler.types.Type;
 105 import org.simantics.scl.compiler.types.Types;
 106 import org.simantics.scl.compiler.types.kinds.Kind;
 107 import org.simantics.scl.compiler.types.kinds.Kinds;
 108 import org.simantics.scl.compiler.types.util.MultiFunction;
 109 import org.simantics.scl.runtime.profiling.BranchPoint;
 110
 111 import gnu.trove.list.array.TIntArrayList;
 112 import gnu.trove.map.hash.THashMap;
 113 import gnu.trove.map.hash.TObjectIntHashMap;
 114 import gnu.trove.procedure.TObjectObjectProcedure;
 115 import gnu.trove.set.hash.THashSet;
 116 import gnu.trove.set.hash.TIntHashSet;
 117
 118 public class Elaboration {
 119     // inputs
 120     private final CompilationContext compilationContext;
 121     private final ErrorLog errorLog;
 122     private final String moduleName;
 123     private final ModuleHeader moduleHeader;
 124     private final ArrayList<ImportDeclaration> importsAst;
 125     private final JavaReferenceValidatorFactory jrvFactory;
 126     final JavaReferenceValidator<Object, Object, Object, Object> javaReferenceValidator;
 127     private final ValueRepository valueDefinitionsAst;
 128     private final RelationRepository relationDefinitionsAst;
 129
 130     // creates
 131     ConcreteModule module;
 132     Environment importedEnvironment;
 133     ArrayList<SupplementedValueType> supplementedTypeAnnotations = new ArrayList<SupplementedValueType>();
 134
 135     JavaTypeTranslator javaTypeTranslator;
 136     ArrayList<StandardTypeConstructor> dataTypes = new ArrayList<StandardTypeConstructor>();
 137     THashMap<String, ClassRef> classRefs = new THashMap<String, ClassRef>();
 138     THashMap<String, BranchPoint[]> branchPoints;
 139
 140     public Elaboration(CompilationContext compilationContext, CompilationTimer timer, EnvironmentFactory localEnvironmentFactory,
 141             String moduleName, ModuleHeader moduleHeader, ArrayList<ImportDeclaration> importsAst,
 142             JavaReferenceValidatorFactory jrvFactory,
 143             ValueRepository valueDefinitionsAst,
 144             RelationRepository relationDefinitionsAst) {
 145         this.compilationContext = compilationContext;
 146         this.errorLog = compilationContext.errorLog;
 147         this.moduleName = moduleName;
 148         this.moduleHeader = moduleHeader;
 149         importsAst = processRelativeImports(importsAst);
 150         this.importsAst = importsAst;
 151         this.jrvFactory = jrvFactory;
 152         this.javaReferenceValidator = moduleHeader == null || moduleHeader.classLoader == null
 153                 ? jrvFactory.getDefaultJavaReferenceValidator()
 154                 : jrvFactory.getJavaReferenceValidator(moduleHeader.classLoader);
 155         if(javaReferenceValidator == null)
 156             errorLog.log(moduleHeader.classLoaderLocation, "Didn't find the specified class loader.");
 157         this.valueDefinitionsAst = valueDefinitionsAst;
 158         this.relationDefinitionsAst = relationDefinitionsAst;
 159
 160         module = new ConcreteModule(moduleName);
 161         compilationContext.module = module;
 162         try {
 163             if(timer != null)
 164                 timer.suspendTimer();
 165             importedEnvironment = localEnvironmentFactory.createEnvironment(
 166                     importsAst.toArray(new ImportDeclaration[importsAst.size()]));
 167             if(timer != null)
 168                 timer.continueTimer();
 169             compilationContext.environment = new EnvironmentOfModule(importedEnvironment, module);
 170         } catch (ImportFailureException e) {
 171             for(ImportFailure failure : e.failures)
 172                 errorLog.log(failure.location, failure.toString());
 173             return;
 174         }
 175         for(ImportDeclaration importAst : importsAst)
 176             this.module.addDependency(new ImportDeclaration(
 177                     importAst.moduleName,
 178                     importAst.reexport ? importAst.localName : null,
 179                     false,
 180                     importAst.spec));
 181         localEnvironmentFactory.addBuiltinDependencies(module);
 182         compilationContext.namingPolicy = new JavaNamingPolicy(moduleName);
 183     }
 184
 185     private ArrayList<ImportDeclaration> processRelativeImports(ArrayList<ImportDeclaration> relativeImports) {
 186         ArrayList<ImportDeclaration> absoluteImports = new ArrayList<ImportDeclaration>(relativeImports.size());
 187         for(ImportDeclaration relativeImport : relativeImports) {
 188             if(relativeImport.moduleName.startsWith(".")) {
 189                                 try {
 190                                         String absoluteModuleName = ModuleUtils.resolveAbsolutePath(moduleName, relativeImport.moduleName);
 191                     ImportDeclaration absoluteImport = new ImportDeclaration(
 192                             absoluteModuleName, relativeImport.localName,
 193                             relativeImport.reexport, relativeImport.spec);
 194                     absoluteImport.location = relativeImport.location;
 195                     absoluteImports.add(absoluteImport);
 196                                 } catch (InvalidModulePathException e) {
 197                                         errorLog.log(relativeImport.location, e.getMessage());
 198                                 }
 199             }
 200             else
 201                 absoluteImports.add(relativeImport);
 202         }
 203         return absoluteImports;
 204     }
 205
 206     public void addTypesToEnvironment(
 207             ArrayList<DDataAst> dataTypesAst,
 208             ArrayList<DTypeAst> typeAliasesAst,
 209             ArrayList<DEffectAst> effectsAst) {
 210         for(DDataAst dataType : dataTypesAst) {
 211             dataType.parameterKinds = new Kind[dataType.parameters.length];
 212             Kind constructorKind = Kinds.STAR;
 213             for(int i=dataType.parameters.length-1;i>=0;--i) {
 214                 Kind kind = Kinds.metaVar();
 215                 dataType.parameterKinds[i] = kind;
 216                 constructorKind = Kinds.arrow(kind, constructorKind);
 217             }
 218
 219             StandardTypeConstructor typeConstructor = new StandardTypeConstructor(
 220                     Types.con(moduleName, dataType.name), constructorKind);
 221
 222             NameExistenceChecks.checkIfTypeExists(errorLog,
 223                     dataType.location, importedEnvironment, dataType.name);
 224             if(module.addTypeDescriptor(dataType.name, typeConstructor))
 225                 errorLog.log(dataType.location, "Type "+dataType.name+" has already been defined in this module.");
 226             dataType.typeConstructor = typeConstructor;
 227         }
 228
 229         for(DTypeAst typeAlias : typeAliasesAst) {
 230             TypeAlias alias = new TypeAlias(Types.con(moduleName, typeAlias.name), typeAlias.parameters.length);
 231             NameExistenceChecks.checkIfTypeExists(errorLog,
 232                     typeAlias.location, importedEnvironment, typeAlias.name);
 233             if(module.addTypeDescriptor(typeAlias.name, alias)) {
 234                 errorLog.log(typeAlias.location, "Type alias "+typeAlias.name+" has already been defined in this module.");
 235             }
 236         }
 237
 238         for(DEffectAst effect : effectsAst) {
 239             EffectConstructor effectConstructor = new EffectConstructor(Types.con(moduleName, effect.name));
 240             effectConstructor.addThreadLocalVariable(
 241                     new ThreadLocalVariable(
 242                             effect.variableName,
 243                             TypeDesc.forClass(effect.threadLocalType)
 244                             ));
 245             if(module.addEffectConstructor(effect.name, effectConstructor))
 246                 errorLog.log(effect.location, "Type "+effect.name+" has already been defined in this module.");
 247         }
 248         javaTypeTranslator = new JavaTypeTranslator(compilationContext.environment);
 249         compilationContext.javaTypeTranslator = javaTypeTranslator;
 250     }
 251
 252     private static final int[] EMPTY_INT_ARRAY = new int[0];
 253
 254     public void processTypeAliases(ArrayList<DTypeAst> typeAliasesAst) {
 255         TObjectIntHashMap<String> typeAliasMap = new TObjectIntHashMap<String>();
 256         for(int i=0;i<typeAliasesAst.size();++i)
 257             typeAliasMap.put(typeAliasesAst.get(i).name, i);
 258         TIntHashSet tempIntSet = new TIntHashSet();
 259         ArrayList<DTypeAst> orderedTypeAliases = new ArrayList<DTypeAst>(typeAliasesAst.size());
 260         //for(int i=0;i<typeAliasesAst.size();++i)
 261         //    System.out.println(i + "# " + typeAliasesAst.get(i).name);
 262         new StronglyConnectedComponents(typeAliasesAst.size()) {
 263             @Override
 264             protected int[] findDependencies(int u) {
 265                 typeAliasesAst.get(u).type.collectReferences(typeAliasMap, tempIntSet);
 266                 if(tempIntSet.isEmpty())
 267                     return EMPTY_INT_ARRAY;
 268                 if(tempIntSet.contains(u)) {
 269                     errorLog.log(typeAliasesAst.get(u).location, "Type alias has a self reference.");
 270                     tempIntSet.remove(u);
 271                 }
 272                 int[] result = tempIntSet.toArray();
 273                 tempIntSet.clear();
 274                 //System.out.println(u + " -> " + Arrays.toString(result));
 275                 return result;
 276             }
 277             @Override
 278             protected void reportComponent(int[] component) {
 279                 //System.out.println("component: " + Arrays.toString(component));
 280                 if(component.length > 1) {
 281                     StringBuilder b = new StringBuilder();
 282                     b.append("Recursively defined type alias (");
 283                     long minLocation = typeAliasesAst.get(component[0]).location;
 284                     boolean first = true;
 285                     for(int u : component) {
 286                         DTypeAst typeAlias = typeAliasesAst.get(u);
 287                         if(first)
 288                             first = false;
 289                         else
 290                             b.append(", ");
 291                         b.append(typeAlias.name);
 292                         if(Locations.beginOf(typeAlias.location) < Locations.beginOf(minLocation))
 293                             minLocation = typeAlias.location;
 294                     }
 295                     b.append(").");
 296                     errorLog.log(minLocation, b.toString());
 297                 }
 298                 else
 299                     orderedTypeAliases.add(typeAliasesAst.get(component[0]));
 300             }
 301         }.findComponents();
 302
 303         if(errorLog.hasNoErrors()) {
 304             for(DTypeAst typeAlias : orderedTypeAliases) {
 305                 TypeAlias alias = (TypeAlias)module.getTypeDescriptor(typeAlias.name);
 306                 TypeTranslationContext context = createTypeTranslationContext();
 307                 for(int i=0;i<typeAlias.parameters.length;++i)
 308                     context.pushTypeVar(typeAlias.parameters[i]);
 309                 alias.body = typeAlias.type.toType(context, Kinds.metaVar());
 310                 for(int i=0;i<typeAlias.parameters.length;++i)
 311                     alias.parameters[i] = context.popTypeVar(typeAlias.parameters[i], null);
 312             }
 313         }
 314     }
 315
 316     public void processDataTypes(ArrayList<DDataAst> dataTypesAst) {
 317         for(DDataAst dataTypeAst : dataTypesAst) {
 318             TypeTranslationContext context = createTypeTranslationContext();
 319             TVar[] typeParameters = new TVar[dataTypeAst.parameters.length];
 320             for(int i=0;i<dataTypeAst.parameters.length;++i)
 321                 typeParameters[i] = context.addTypeVar(dataTypeAst.parameters[i]);
 322             Constructor[] constructors = new Constructor[dataTypeAst.constructors.length];
 323             String className = null;
 324             boolean external = false;
 325             for(DAnnotationAst annotation : dataTypeAst.getAnnotations()) {
 326                 if(annotation.id.text.equals("@JavaType")) {
 327                     if(annotation.parameters.length != 1 ||
 328                             !(annotation.parameters[0] instanceof ELiteral) ||
 329                             !(((ELiteral)annotation.parameters[0]).getValue() instanceof StringConstant))
 330                         errorLog.log(annotation.location, "Invalid parameters. Expected @JavaType \"className\".");
 331                     else {
 332                         className = ((StringConstant)((ELiteral)annotation.parameters[0]).getValue()).getValue().replace('.', '/');
 333                         external = true;
 334                         break;
 335                     }
 336                 }
 337             }
 338
 339             boolean trivialDataType = dataTypeAst.constructors.length == 1 &&
 340                     dataTypeAst.constructors[0].parameters.length == 1;
 341             if(className == null && !trivialDataType)
 342                 className = compilationContext.namingPolicy.getDataTypeClassName(dataTypeAst.name);
 343
 344             StandardTypeConstructor dataType = dataTypeAst.typeConstructor;
 345
 346             dataType.setType(Types.con(moduleName, dataTypeAst.name), typeParameters);
 347             dataType.setConstructors(constructors);
 348             if(!trivialDataType)
 349                 dataType.setTypeDesc(TypeDesc.forClass(className));
 350             if(!external || dataTypeAst.constructors.length > 0) {
 351                 dataType.isOpen = false;
 352             }
 353             dataType.external = external;
 354             dataTypes.add(dataType);
 355             for(int j=0;j<constructors.length;++j) {
 356                 ConstructorAst constructor = dataTypeAst.constructors[j];
 357                 String name = constructor.name;
 358                 Type[] parameterTypes = new Type[constructor.parameters.length];
 359                 for(int i=constructor.parameters.length-1;i>=0;--i)
 360                     parameterTypes[i] = context.toType(constructor.parameters[i]);
 361                 String javaName = constructors.length == 1 ? className
 362                         : compilationContext.namingPolicy.getConstructorClassName(name);
 363                 String[] fieldNames = null;
 364                 for(DAnnotationAst annotation : constructor.annotations)
 365                     if(annotation.id.text.equals("@JavaType")) {
 366                         try {
 367                             javaName = ((StringConstant)((ELiteral)annotation.parameters[0])
 368                                     .getValue()).getValue();
 369                         } catch(Exception e) {
 370                             errorLog.log(annotation.parameters[0].location, "Invalid annotation parameter.");
 371                         }
 372                     }
 373                     else if(annotation.id.text.equals("@FieldNames")) {
 374                         try {
 375                             EListLiteral literal = (EListLiteral)annotation.parameters[0];
 376                             fieldNames = new String[literal.getComponents().length];
 377                             for(int i=0;i<fieldNames.length;++i) {
 378                                 Expression component = literal.getComponents()[i];
 379                                 if(component instanceof EVar)
 380                                     fieldNames[i] = ((EVar)component).name;
 381                                 else if(component instanceof ELiteral)
 382                                     fieldNames[i] = ((StringConstant)((ELiteral)component).getValue()).getValue();
 383                             }
 384                         } catch(Exception e) {
 385                             errorLog.log(annotation.parameters[0].location, "Invalid annotation parameter.");
 386                             fieldNames = null;
 387                         }
 388                     }
 389
 390                 constructors[j] = new Constructor(constructor.location, dataType,
 391                         Name.create(moduleName, name),
 392                         parameterTypes, javaName);
 393                 constructors[j].fieldNames = fieldNames;
 394                 constructors[j].recordFieldNames = constructor.fieldNames;
 395             }
 396         }
 397     }
 398
 399     public void processTypeClasses(ArrayList<ProcessedDClassAst> typeClassesAst) {
 400         for(ProcessedDClassAst pClassAst : typeClassesAst) {
 401             DClassAst classAst = pClassAst.orig;
 402
 403             if(module.getTypeClass(classAst.name) != null) {
 404                 errorLog.log(classAst.location, "Class "+classAst.name+" has already been defined in this module.");
 405                 continue;
 406             }
 407
 408             TypeTranslationContext context = createTypeTranslationContext();
 409
 410             TPred[] classContext = new TPred[classAst.context.length];
 411             for(int i=0;i<classContext.length;++i)
 412                 classContext[i] = context.toTFuncApply(classAst.context[i]);
 413
 414             TVar[] parameters = new TVar[classAst.parameters.length];
 415
 416             if(classAst.name.equals("Functor") || classAst.name.equals("Monad")) {
 417                 // FIXME hack
 418                 parameters[0] = context.resolveTypeVariable(pClassAst.orig.location, classAst.parameters[0], Kinds.STAR_TO_STAR);
 419             }
 420             else {
 421                 for(int i=0;i<parameters.length;++i)
 422                     parameters[i] = context.resolveTypeVariable(pClassAst.orig.location, classAst.parameters[i], Kinds.metaVar());
 423             }
 424
 425             TCon con = Types.con(moduleName, classAst.name);
 426             TypeClass typeClass = new TypeClass(classAst.location,
 427                     classContext,
 428                     con,
 429                     compilationContext.namingPolicy.getTypeClassInterfaceName(con),
 430                     parameters,
 431                     Fundep.mapFundeps(classAst.parameters, classAst.fundeps));
 432
 433             THashMap<String, TypeClassMethod> methods = typeClass.methods;
 434             for(DValueTypeAst methodDecl : pClassAst.typeDeclarations) {
 435                 try {
 436                     Type type;
 437                     try {
 438                         type = context.toType(methodDecl.type);
 439                     } catch(SCLSyntaxErrorException e) {
 440                         errorLog.log(e.location, e.getMessage());
 441                         continue;
 442                     }
 443                     for(EVar name : methodDecl.names) {
 444                         typeClass.methodNames.add(name.name);
 445                         methods.put(name.name,
 446                                 new TypeClassMethod(typeClass, name.name,
 447                                         compilationContext.namingPolicy.getMethodName(name.name),
 448                                         type, Types.getArity(type),
 449                                         name.location)
 450                                 );
 451                     }
 452                 } catch(RuntimeException e) {
 453                     errorLog.setExceptionPosition(methodDecl.location);
 454                     throw e;
 455                 }
 456             }
 457
 458             for(String methodName : pClassAst.defaultImplementations.getValueNames()) {
 459                 String fullName = "_" + classAst.name + "_default_" + methodName;
 460                 ArrayList<DValueAst> defs = pClassAst.defaultImplementations.getDefinition(methodName);
 461
 462                 TypeClassMethod method = typeClass.methods.get(methodName);
 463                 if(method == null) {
 464                     errorLog.log(defs.get(0).location, "Method " + methodName + " is not defined in this class.");
 465                     continue;
 466                 }
 467                 method.setDefaultImplementation(Name.create(moduleName, fullName));
 468
 469                 valueDefinitionsAst.addDefinitions(fullName, defs);
 470                 /*valueDefinitionsAst.addAnnotation(fullName, new DAnnotationAst(new EVar("@private"),
 471                         Collections.<Expression>emptyList()));*/
 472                 supplementedTypeAnnotations.add(new SupplementedValueType(defs.get(0).location, fullName, method.getType()));
 473             }
 474
 475             module.addTypeClass(classAst.name, typeClass);
 476         }
 477     }
 478
 479     private TypeTranslationContext createTypeTranslationContext() {
 480         return new TypeTranslationContext(compilationContext);
 481     }
 482
 483     public void processDerivingInstances(ArrayList<DDerivingInstanceAst> derivingInstancesAst,
 484             ArrayList<ProcessedDInstanceAst> instancesAst) {
 485         for(DDerivingInstanceAst derivingInstance : derivingInstancesAst) {
 486             String name = derivingInstance.name.name;
 487             TCon con;
 488             try {
 489                 con = Environments.getTypeClassName(compilationContext.environment, name);
 490             } catch (AmbiguousNameException e) {
 491                 errorLog.log(derivingInstance.name.location, e.getMessage());
 492                 continue;
 493             }
 494             if(con == null) {
 495                 errorLog.log(derivingInstance.name.location, "Couldn't resolve class " + name + ".");
 496                 continue;
 497             }
 498             InstanceDeriver deriver = InstanceDerivers.get(con);
 499             if(deriver == null)
 500                 errorLog.log(derivingInstance.location, "Doesn't know how to derive " + name + ".");
 501             else
 502                 deriver.derive(errorLog, compilationContext.environment, instancesAst, derivingInstance);
 503         }
 504     }
 505
 506     public void processInstances(ArrayList<ProcessedDInstanceAst> instancesAst) {
 507         THashSet<TPred> instanceClashCheckSet = new THashSet<TPred>();
 508         for(ProcessedDInstanceAst pInstanceAst : instancesAst) {
 509             DInstanceAst instanceAst = pInstanceAst.orig;
 510             try {
 511                 TypeTranslationContext context = createTypeTranslationContext();
 512
 513                 String name = instanceAst.name.name;
 514                 TCon typeClassCon;
 515                 try {
 516                     typeClassCon = Environments.getTypeClassName(compilationContext.environment, name);
 517                 } catch (AmbiguousNameException e) {
 518                     errorLog.log(instanceAst.name.location, e.getMessage());
 519                     continue;
 520                 }
 521                 if(typeClassCon == null) {
 522                     errorLog.log(instanceAst.name.location, "Couldn't resolve class " + name + ".");
 523                     continue;
 524                 }
 525                 TypeClass typeClass = compilationContext.environment.getTypeClass(typeClassCon);
 526                 pInstanceAst.typeClass = typeClass;
 527
 528                 if(instanceAst.types.length != typeClass.parameters.length) {
 529                     errorLog.log(instanceAst.location, "Wrong number of parameters to type class " + typeClassCon.name + ".");
 530                     continue;
 531                 }
 532                 Type[] parameters = new Type[instanceAst.types.length];
 533                 for(int i=0;i<parameters.length;++i)
 534                     parameters[i] = context.toType(instanceAst.types[i], typeClass.parameters[i].getKind() /* FIXME */);
 535                 TPred instance = Types.pred(typeClassCon, parameters);
 536
 537                 if(!instanceClashCheckSet.add(instance)) {
 538                     errorLog.log(instanceAst.location, "Duplicate definition of the instance " + instance + ".");
 539                     continue;
 540                 }
 541
 542                 TPred[] instanceContext = new TPred[instanceAst.context.length];
 543                 for(int i=0;i<instanceContext.length;++i)
 544                     instanceContext[i] = context.toTFuncApply(instanceAst.context[i]);
 545
 546                 String javaName = compilationContext.namingPolicy.getInstanceClassName(instance);
 547                 String instancePrefix = instance.toName() + "$";
 548
 549                 ValueRepository valueDefs = pInstanceAst.valueDefs;
 550
 551                 THashMap<String, MethodImplementation> methodImplementations =
 552                         new THashMap<String, MethodImplementation>();
 553                 for(String valueName : valueDefs.getValueNames()) {
 554                     String fullName = instancePrefix + valueName;
 555                     long loc = valueDefs.getDefinition(valueName).get(0).location;
 556                     valueDefinitionsAst.addFrom(valueDefs, valueName, fullName);
 557                     /*valueDefinitionsAst.addAnnotation(fullName, new DAnnotationAst(new EVar("@private"),
 558                             Collections.<Expression>emptyList()));*/
 559                     TypeClassMethod method = typeClass.methods.get(valueName);
 560                     if(method == null) {
 561                         errorLog.log(loc, "Method " + valueName + " is not defined in the type class " + typeClass.name.name + ".");
 562                         continue;
 563                     }
 564                     Type type = method.getBaseType().replace(typeClass.parameters, parameters);
 565                     for(int i=instanceContext.length-1;i>=0;--i)
 566                         type = Types.constrained(instanceContext[i], type);
 567                     //System.out.println(valueName + " :: " + type);
 568                     supplementedTypeAnnotations.add(
 569                             new SupplementedValueType(loc, fullName, type));
 570                     methodImplementations.put(valueName,
 571                             new MethodImplementation(Name.create(moduleName, fullName), false));
 572                 }
 573
 574                 // Are all necessary methods defined
 575                 for(String methodName : typeClass.methods.keySet())
 576                     if(!methodImplementations.containsKey(methodName)) {
 577                         Name defaultImplementation = typeClass.methods.get(methodName).getDefaultImplementation();
 578                         if(defaultImplementation == null)
 579                             errorLog.log(instanceAst.location, "Method " + methodName + " is not defined.");
 580                         else
 581                             methodImplementations.put(methodName,
 582                                     new MethodImplementation(defaultImplementation, true));
 583                     }
 584
 585                 JavaTypeInstanceConstructor generator = new JavaTypeInstanceConstructor(javaName, instance, instanceContext);
 586                 if(instanceContext.length == 0)
 587                     generator.setHasStaticInstance(true);
 588
 589                 TypeClassInstance typeClassInstance =
 590                         new TypeClassInstance(instanceAst.location, typeClass, generator,
 591                                 generator.getTypeParameters(),
 592                                 instanceContext, instance, methodImplementations,
 593                                 javaName);
 594
 595                 generator.setInstance(typeClassInstance);
 596
 597                 module.addTypeClassInstance(typeClassCon, typeClassInstance);
 598             } catch(RuntimeException e) {
 599                 errorLog.setExceptionPosition(instanceAst.location);
 600                 throw e;
 601             }
 602         }
 603
 604         // Generate superclass functions
 605         for(ArrayList<TypeClassInstance> instanceArray : module.getTypeInstances().values())
 606             for(TypeClassInstance instance : instanceArray) {
 607                 try {
 608                     TypeClass typeClass = instance.typeClass;
 609                     int superCount = typeClass.context.length;
 610
 611                     instance.superExpressions = new SCLValue[superCount];
 612                     for(int i=0;i<superCount;++i) {
 613                         TPred type = (TPred)typeClass.context[i]
 614                                 .replace(typeClass.parameters, instance.instance.parameters);
 615                         SCLValue value = new SCLValue(Name.create(moduleName,
 616                                 instance.javaName.substring(instance.javaName.indexOf('$')+1) + "_super" + i));
 617                         //value.addProperty(PrivateProperty.INSTANCE);
 618                         module.addValue(value);
 619                         Expression expression = new EGetConstraint(instance.location, type);
 620                         value.setExpression(expression);
 621                         value.setType(Types.forAll(instance.generatorParameters, Types.constrained(instance.context, type)));
 622                         value.getProperties().add(new InlineProperty(instance.context.length, 0xffffffff));
 623                         //TypeUnparsingContext tuc = new TypeUnparsingContext();
 624                         // TODO error handling
 625                         instance.superExpressions[i] = value;
 626                     }
 627                 } catch(RuntimeException e) {
 628                     errorLog.setExceptionPosition(instance.getLocation());
 629                     throw e;
 630                 }
 631             }
 632     }
 633
 634     public void processJavaMethods(ArrayList<JavaMethodDeclaration> javaMethodDeclarations) {
 635         for(JavaMethodDeclaration javaMethod : javaMethodDeclarations) {
 636             String name = javaMethod.methodName.name;
 637             String javaName = name;
 638             ArrayList<DAnnotationAst> annotations =
 639                     valueDefinitionsAst.getAnnotations(name);
 640             boolean isPrivate = false;
 641             if(annotations != null) {
 642                 for(DAnnotationAst annotation : annotations)
 643                     if(annotation.id.text.equals("@JavaName")) {
 644                         String temp = AnnotationUtils.processStringAnnotation(errorLog, annotation);
 645                         if(temp != null)
 646                             javaName = temp;
 647                     }
 648                     else if(annotation.id.text.equals("@private")) {
 649                         AnnotationUtils.processTagAnnotation(errorLog, annotation);
 650                         isPrivate = true;
 651                     }
 652             }
 653
 654             Type type = createTypeTranslationContext().toType(javaMethod.type);
 655
 656             CallJava callJava = resolveMethod(
 657                     javaMethod.location,
 658                     javaMethod.className,
 659                     javaName,
 660                     type);
 661             if(callJava != null) {
 662                 NameExistenceChecks.checkIfValueExists(errorLog, javaMethod.location,
 663                         importedEnvironment, name);
 664                 SCLValue value = module.addValue(name, callJava);
 665                 value.definitionLocation = javaMethod.methodName.location;
 666                 if(isPrivate)
 667                     value.addProperty(PrivateProperty.INSTANCE);
 668             }
 669         }
 670     }
 671
 672     /**
 673      * Convert a java class method into a {@link CallJava} instance.
 674      * Compilation errors are logged for failures in finding the named class or in accessing the method.
 675      * The return value for errors is {@code null}.
 676      *
 677      * @param loc  SCL source location
 678      * @param className  Name of the class
 679      * @param methodName  Name of the method
 680      * @param type  The expected SCL type of the method
 681      * @return  A new JavaCall instance, or null if the given method can not be instantiated.
 682      */
 683     private CallJava resolveMethod(long loc,
 684             String className, String methodName, Type type) {
 685         // Resolve class
 686         ClassRef classRef = classRefs.get(className);
 687         if(classRef == null) {
 688             if(classRefs.containsKey(className))
 689                 return null;
 690             classRef = javaReferenceValidator.getClassRef(className);
 691             classRefs.put(className, classRef);
 692             if(classRef == null) {
 693                 errorLog.log(loc, "Didn't find class " + className + ".");
 694                 return null;
 695             }
 696             if(!javaReferenceValidator.isPublic(classRef.getClass())) {
 697                 errorLog.log(loc, "Class " + className + " is not public.");
 698                 return null;
 699             }
 700
 701         }
 702
 703         // Resolve method
 704         List<MethodRef> methodRefs = classRef.getMethodRefs(methodName);
 705         if(methodRefs.isEmpty()) {
 706             errorLog.log(loc, "Didn't find any public method or field with name '" + methodName + "' from class " + className + ".");
 707             return null;
 708         }
 709
 710         ArrayList<CallJava> candidates = new ArrayList<CallJava>(2);
 711         for(MethodRef methodRef : methodRefs) {
 712             CallJava candidate = matchType(methodRef, type);
 713             if(candidate != null)
 714                 candidates.add(candidate);
 715         }
 716
 717         if(candidates.isEmpty()) {
 718             StringBuilder b = new StringBuilder();
 719             b.append("Didn't find any public method or field matching the type " + type + ". The following methods and fields were tried:");
 720             for(MethodRef methodRef : methodRefs) {
 721                 b.append("\n    ");
 722                 b.append(methodRef);
 723             }
 724             b.append("\nbut expected something like:");
 725             {
 726                 MultiFunction mFun = Types.matchFunction(type);
 727                 b.append("\n    public static ");
 728                 b.append(javaTypeTranslator.toTypeDesc(mFun.returnType).getFullName()).append(' ').append(methodName).append('(');
 729                 boolean first = true;
 730                 for(Type parameter : mFun.parameterTypes) {
 731                     if(first)
 732                         first = false;
 733                     else
 734                         b.append(", ");
 735                     b.append(javaTypeTranslator.toTypeDesc(parameter).getFullName());
 736                 }
 737                 b.append(')');
 738             }
 739             errorLog.log(loc, b.toString());
 740             return null;
 741         }
 742         else if(candidates.size() == 1)
 743             return candidates.get(0);
 744         else {
 745             // Try to find the best match
 746             ArrayList<CallJava> bestCandidates = new ArrayList<CallJava>(candidates.size());
 747             loop: for(CallJava candidate : candidates) {
 748                 Iterator<CallJava> it = bestCandidates.iterator();
 749                 while(it.hasNext()) {
 750                     CallJava b = it.next();
 751                     switch(candidate.compareTo(javaReferenceValidator, b)) {
 752                     case CallJava.LESS:
 753                     case CallJava.EQUAL:
 754                         continue loop;
 755                     case CallJava.GREATER:
 756                         it.remove();
 757                         break;
 758                     case CallJava.INCOMPARABLE:
 759                         break;
 760                     }
 761                 }
 762                 bestCandidates.add(candidate);
 763             }
 764
 765             if(bestCandidates.size() == 1) {
 766                 // System.out.println("Choose: " + bestCandidates.get(0).getMethodRef());
 767                 return bestCandidates.get(0);
 768             }
 769             else {
 770                 StringBuilder b = new StringBuilder();
 771                 b.append("Found more than one incomparable public methods the type " + type + ":");
 772                 for(CallJava callJava : bestCandidates) {
 773                     b.append("\n    ");
 774                     b.append(callJava.getMethodRef());
 775                 }
 776                 errorLog.log(loc, b.toString());
 777                 return null;
 778             }
 779         }
 780     }
 781
 782     private CallJava matchType(MethodRef methodRef, Type type) {
 783         //System.out.println("-----------------------------------------------------");
 784         //System.out.println("method: " + methodRef);
 785         //System.out.println("type: " + type);
 786
 787         type = Types.canonical(type);
 788         while(type instanceof TForAll)
 789             type = Types.canonical(((TForAll)type).type);
 790
 791         TypeDesc[] expectedParameterTypes = methodRef.getParameterTypes();
 792
 793         ArrayList<Type> parameterTypes = new ArrayList<Type>();
 794         Type effect = Types.NO_EFFECTS;
 795         Type returnType = type;
 796
 797         StackItem[] stackItems = new StackItem[expectedParameterTypes.length];
 798         TIntArrayList unresolvedItems = new TIntArrayList();
 799
 800         loop:
 801         for(int i=0;i<expectedParameterTypes.length;++i) {
 802             Type parameterType;
 803             TypeDesc providedParameterType;
 804             do {
 805                 if(effect != Types.NO_EFFECTS || !(returnType instanceof TFun)) {
 806                     while(i < expectedParameterTypes.length)
 807                         unresolvedItems.add(i++);
 808                     break loop;
 809                 }
 810                 TFun fun = (TFun)returnType;
 811                 parameterType = Types.canonical(fun.domain);
 812                 parameterTypes.add(parameterType);
 813                 effect = Types.canonical(fun.effect);
 814                 returnType = Types.canonical(fun.range);
 815                 providedParameterType = javaTypeTranslator.toTypeDesc(parameterType);
 816             } while(providedParameterType.equals(TypeDesc.VOID));
 817
 818             while(true) {
 819                 TypeDesc expectedParameterType = expectedParameterTypes[i];
 820                 if(javaReferenceValidator.isAssignableFrom(expectedParameterType,
 821                         providedParameterType)) {
 822                     stackItems[i] = new ParameterStackItem(
 823                             parameterTypes.size()-1,
 824                             parameterType);
 825                     break;
 826                 }
 827                 else
 828                     unresolvedItems.add(i++);
 829                 if(i == expectedParameterTypes.length) {
 830                     parameterTypes.remove(parameterTypes.size()-1);
 831                     returnType = Types.functionE(parameterType, effect, returnType);
 832                     break;
 833                 }
 834             }
 835         }
 836         //System.out.println("returnType: " + returnType);
 837         if(!unresolvedItems.isEmpty()) {
 838             ArrayList<TCon> concreteEffects = new ArrayList<TCon>();
 839             effect.collectConcreteEffects(concreteEffects);
 840
 841             for(TCon eff : concreteEffects) {
 842                 EffectConstructor effC = compilationContext.environment.getEffectConstructor(eff);
 843                 for(ThreadLocalVariable var : effC.getThreadLocalVariables()) {
 844                     for(int i=0;i<unresolvedItems.size();++i) {
 845                         int id = unresolvedItems.get(i);
 846                         if(!expectedParameterTypes[id].equals(TypeDesc.OBJECT) &&
 847                                 javaReferenceValidator.isAssignableFrom(expectedParameterTypes[id], var.type)) {
 848                             stackItems[id] = new ThreadLocalStackItem(var.variableName, var.type);
 849                             unresolvedItems.removeAt(i);
 850                             --i;
 851                         }
 852                     }
 853                 }
 854             }
 855
 856             if(!unresolvedItems.isEmpty())
 857                 return null;
 858             /*System.out.print("Unresolved: ");
 859             boolean first = true;
 860             for(int i=0;i<unresolvedItems.size();++i) {
 861                 if(first)
 862                     first = false;
 863                 else
 864                     System.out.print(", ");
 865                 System.out.print(expectedParameterTypes[unresolvedItems.get(i)]);
 866             }
 867             System.out.println();*/
 868         }
 869         OutputFilter filter = null;
 870         {
 871             TypeDesc providedReturnType = methodRef.getReturnType();
 872             if(!providedReturnType.equals(Constants.FUNCTION)) {
 873                 while(returnType instanceof TFun && effect == Types.NO_EFFECTS) {
 874                     TFun fun = (TFun)returnType;
 875                     Type parameterType = Types.canonical(fun.domain);
 876                     if(!javaTypeTranslator.toTypeDesc(parameterType).equals(TypeDesc.VOID))
 877                         return null;
 878                     parameterTypes.add(parameterType);
 879                     effect = Types.canonical(fun.effect);
 880                     returnType = Types.canonical(fun.range);
 881                 }
 882             }
 883             TypeDesc expectedReturnType =
 884                     javaTypeTranslator.toTypeDesc(returnType);
 885             if(!javaReferenceValidator.isAssignableFrom(expectedReturnType,
 886                     providedReturnType)) {
 887                 if(expectedReturnType.equals(TypeDesc.VOID)) {
 888                     if(providedReturnType.equals(TypeDesc.DOUBLE) || providedReturnType.equals(TypeDesc.LONG))
 889                         filter = Pop2OutputFilter.INSTANCE;
 890                     else
 891                         filter = PopOutputFilter.INSTANCE;
 892                 }
 893                 else if(expectedReturnType.equals(Constants.LIST)
 894                         && providedReturnType.equals(Constants.COLLECTION))
 895                     filter = ConvertToListFilter.INSTANCE;
 896                 else
 897                     return null;
 898             }
 899         }
 900
 901         CallJava result = new CallJava(
 902                 Types.freeVarsArray(type),
 903                 effect,
 904                 returnType,
 905                 parameterTypes.toArray(new Type[parameterTypes.size()]),
 906                 stackItems,
 907                 methodRef,
 908                 filter);
 909         //System.out.println(result.getType());
 910         return result;
 911     }
 912
 913     public void processMappingRelations(ArrayList<DMappingRelationAst> mappingRelationsAst) {
 914         for(DMappingRelationAst mappingRelation : mappingRelationsAst) {
 915             TypeAst[] parameterTypesAst = mappingRelation.parameterTypes;
 916             Type[] parameterTypes = new Type[parameterTypesAst.length];
 917             TypeTranslationContext typeTranslationContext = createTypeTranslationContext();
 918             for(int i=0;i<parameterTypes.length;++i)
 919                 parameterTypes[i] = parameterTypesAst[i].toType(typeTranslationContext, Kinds.STAR);
 920             MappingRelation mRel =
 921                     new MappingRelation(Name.create(moduleName, mappingRelation.name), parameterTypes);
 922             mRel.location = mappingRelation.location;
 923             if(module.addMappingRelation(mRel))
 924                 errorLog.log(mappingRelation.location, "Mapping relation " + mappingRelation.name +
 925                         " has already been defined.");
 926         }
 927     }
 928
 929     THashMap<String, DRuleAst> ruleAstMap = new THashMap<String, DRuleAst>();
 930
 931     public void processRules(ArrayList<DRuleAst> rulesAst) {
 932         // Find implied mapping relations
 933         for(DRuleAst ruleA : rulesAst) {
 934             ArrayList<Query> whereSection = ruleA.getSections().get("where");
 935             if(whereSection != null)
 936                 for(Query query : whereSection) {
 937                     if(!(query instanceof QPreGuard))
 938                         continue;
 939                     QPreGuard guard = (QPreGuard)query;
 940                     if(!(guard.guard instanceof EApply))
 941                         continue;
 942                     EApply apply = (EApply)guard.guard;
 943                     if(!(apply.getFunction() instanceof EVar))
 944                         continue;
 945
 946                     String name = ((EVar)apply.getFunction()).name;
 947                     if(module.getMappingRelation(name) != null)
 948                         continue;
 949
 950                     int arity = apply.getParameters().length;
 951                     Type[] parameterTypes = new Type[arity];
 952                     for(int i=0;i<arity;++i)
 953                         parameterTypes[i] = Types.metaVar(Kinds.STAR);
 954                     MappingRelation mRel =
 955                             new MappingRelation(Name.create(moduleName, name), parameterTypes);
 956                     mRel.location = query.location;
 957                     module.addMappingRelation(mRel);
 958                 }
 959             if(ruleAstMap.put(ruleA.name, ruleA) != null)
 960                 errorLog.log(ruleA.location, "Rule " + ruleA.name +
 961                         " has already been defined.");
 962         }
 963
 964         //
 965         for(String ruleName : ruleAstMap.keySet())
 966             processRule(ruleName);
 967     }
 968
 969     private TransformationRule processRule(String ruleName) {
 970         TransformationRule rule = module.getRule(ruleName);
 971         if(rule != null)
 972             return rule;
 973
 974         DRuleAst ruleAst = ruleAstMap.get(ruleName);
 975         if(ruleAst.alreadyProcessing) {
 976             errorLog.log(ruleAst.location, "Cyclic chain of rule extensions.");
 977             return null;
 978         }
 979
 980         TransformationRule[] extendsRules;
 981         int length = ruleAst.extendsNames.length;
 982         if(length == 0)
 983             extendsRules = TransformationRule.EMPTY_ARRAY;
 984         else {
 985             extendsRules = new TransformationRule[length];
 986             for(int i=0;i<length;++i) {
 987                 try {
 988                     String extendsName = ruleAst.extendsNames[i];
 989                     TransformationRule extendsRule;
 990                     if(ruleAstMap.containsKey(extendsName))
 991                         extendsRule = processRule(extendsName);
 992                     else {
 993                         extendsRule = Environments.getRule(compilationContext.environment, extendsName);
 994                         if(extendsRule == null)
 995                             errorLog.log(ruleAst.location,
 996                                     "Couldn't resolve rule name " + extendsName + ".");
 997                     }
 998                     extendsRules[i] = extendsRule;
 999                 } catch(AmbiguousNameException e) {
1000                     errorLog.log(ruleAst.location, e.getMessage());
1001                 }
1002             }
1003         }
1004
1005         final THashMap<SectionName, Query[]> sections = new THashMap<SectionName, Query[]>();
1006
1007         final TranslationContext context = createTranslationContext();
1008         if(length > 0) {
1009             THashMap<String, Variable> variables = context.getVariables();
1010             for(TransformationRule extendsRule : extendsRules) {
1011                 if(extendsRule == null)
1012                     continue;
1013                 for(Variable var : extendsRule.variables)
1014                     if(variables.put(var.getName(), var) != null) {
1015                         errorLog.log(ruleAst.location,
1016                                 "Variable " + var.getName() + " is defined in more than one base rule, which is not currently allowed.");
1017                     }
1018             }
1019         }
1020         context.pushExistentialFrame();
1021         ruleAst.getSections().forEachEntry(new TObjectObjectProcedure<String, ArrayList<Query>>() {
1022             @Override
1023             public boolean execute(String sectionNameString, ArrayList<Query> queries) {
1024                 Query[] resolvedQueries = new Query[queries.size()];
1025                 for(int i=0;i<resolvedQueries.length;++i)
1026                     resolvedQueries[i] = queries.get(i).resolve(context);
1027
1028                 SectionName sectionName = SectionName.getSectionName(sectionNameString);
1029                 if(sectionName == null)
1030                     context.getErrorLog().log(queries.get(0).location,
1031                             "Invalid section name " + sectionNameString + ".");
1032                 else
1033                     sections.put(sectionName, resolvedQueries);
1034                 return true;
1035             }
1036         });
1037
1038         Variable[] variables = context.getVariables().values().toArray(new Variable[context.getVariables().size()]);
1039
1040         rule = new TransformationRule(ruleAst.isAbstract,
1041                 Name.create(moduleName, ruleAst.name),
1042                 extendsRules,
1043                 sections, variables);
1044         rule.location = ruleAst.location;
1045         module.addRule(rule);
1046         return rule;
1047     }
1048
1049     public void addDataTypesToEnvironment() {
1050         for(StandardTypeConstructor dataType : dataTypes) {
1051             int constructorTag = 0;
1052             for(Constructor constructor : dataType.constructors) {
1053                 SCLValue value = new SCLValue(constructor.name);
1054                 SCLConstructor sclConstructor =
1055                         new SCLConstructor(
1056                                 constructor.name.name,
1057                                 constructor.javaName,
1058                                 constructor.getTypeVariables(),
1059                                 constructorTag++,
1060                                 constructor.getReturnType(),
1061                                 constructor.fieldNames == null
1062                                         ? SCLConstructor.DEFAULT_FIELD_NAMES[constructor.getParameterTypes().length]
1063                                         : constructor.fieldNames,
1064                                 constructor.recordFieldNames,
1065                                 constructor.getParameterTypes());
1066                 if(dataType.constructors.length == 1 && (
1067                         dataType.getTypeDesc() == null ||
1068                         dataType.constructors[0].javaName.equals(MethodBuilderBase.getClassName(dataType.getTypeDesc()))))
1069                     sclConstructor.setOnlyConstructor(true);
1070                 value.setValue(sclConstructor);
1071                 value.setType(constructor.getType());
1072
1073                 NameExistenceChecks.checkIfValueExists(errorLog, constructor.loc,
1074                         importedEnvironment, constructor.name.name);
1075                 if(module.addValue(value)) {
1076                     errorLog.log(constructor.loc,
1077                             "Value " + constructor.name.name + " is already defined.");
1078                 }
1079             }
1080         }
1081     }
1082
1083     public void addTypeClassesToEnvironment() {
1084         for(TypeClass typeClass : module.getTypeClasses()) {
1085             for(TypeClassMethod method : typeClass.methods.values()) {
1086                 SCLValue value = method.createValue();
1087                 value.definitionLocation = method.location;
1088                 NameExistenceChecks.checkIfValueExists(errorLog, Locations.NO_LOCATION,
1089                         importedEnvironment, value.getName().name);
1090
1091                 if(module.addValue(value)) {
1092                     String name = method.getName();
1093                     long location = Locations.NO_LOCATION;
1094                     ArrayList<DValueAst> definitions = valueDefinitionsAst.getDefinition(name);
1095                     if(definitions != null && !definitions.isEmpty())
1096                         location = definitions.get(0).location;
1097                     errorLog.log(location, "Value " + name + " is already defined.");
1098                 }
1099             }
1100         }
1101     }
1102
1103     public void preprocessValueDefinitions(ArrayList<DValueTypeAst> typeAnnotationsAst) {
1104         for(String name : valueDefinitionsAst.getValueNames()) {
1105             SCLValue value = new SCLValue(Name.create(moduleName, name));
1106
1107             long location = valueDefinitionsAst.getLocation(name);
1108             NameExistenceChecks.checkIfValueExists(errorLog, location,
1109                     importedEnvironment, value.getName().name);
1110             value.definitionLocation = location;
1111             if(module.addValue(value))
1112                 errorLog.log(location, "Value " + name + " is already defined.");
1113         }
1114         for(DValueTypeAst valueTypeAst : typeAnnotationsAst)
1115             for(EVar name : valueTypeAst.names) {
1116                 SCLValue value = module.getValue(name.name);
1117                 if(value == null) {
1118                     errorLog.log(valueTypeAst.location, name.name + " is not defined.");
1119                     value = new SCLValue(Name.create(moduleName, name.name));
1120                     module.addValue(value);
1121                 }
1122                 value.definitionLocation = name.location;
1123             }
1124         for(String name : relationDefinitionsAst.getRelationNames()) {
1125             ConcreteRelation relation = new ConcreteRelation(name);
1126             module.addRelation(name, relation);
1127         }
1128     }
1129
1130     public void addValueDefinitionsToEnvironment(ArrayList<DValueTypeAst> typeAnnotationsAst) {
1131         THashMap<String, DValueTypeAst> typeMap = new THashMap<String, DValueTypeAst>();
1132         for(DValueTypeAst valueTypeAst : typeAnnotationsAst)
1133             for(EVar name : valueTypeAst.names) {
1134                 if(typeMap.containsKey(name.name))
1135                     errorLog.log(valueTypeAst.location, "Type of "+name.name+" has already been declared in this module.");
1136                 else
1137                     typeMap.put(name.name, valueTypeAst);
1138             }
1139
1140         for(String name : valueDefinitionsAst.getValueNames()) {
1141             ArrayList<DValueAst> defs = valueDefinitionsAst.getDefinition(name);
1142             try {
1143                 SCLValue value = module.getValue(name);
1144                 TranslationContext context = createTranslationContext();
1145                 Expression expression = context.translateCases2(defs);
1146                 value.setExpression(expression);
1147
1148                 DValueTypeAst valueTypeAst = typeMap.remove(name);
1149                 if(valueTypeAst != null)
1150                     value.setType(Types.closure(context.toType(valueTypeAst.type)));
1151
1152                 ArrayList<DAnnotationAst> annotations = valueDefinitionsAst.getAnnotations(name);
1153                 if(annotations != null)
1154                     for(DAnnotationAst annotation : annotations) {
1155                         handleAnnotation(value, defs, annotation);
1156                     }
1157             } catch(RuntimeException e) {
1158                 errorLog.setExceptionPosition(defs.get(0).location);
1159                 throw e;
1160             }
1161         }
1162         for(String name : relationDefinitionsAst.getRelationNames()) {
1163             ArrayList<DRelationAst> definitions = relationDefinitionsAst.getDefinition(name);
1164             if(definitions.size() > 1) {
1165                 errorLog.log(definitions.get(1).location,
1166                         "Does not yet support definition of relations by more than one rule.");
1167                 continue;
1168             }
1169
1170             DRelationAst definition = definitions.get(0);
1171             ConcreteRelation relation = (ConcreteRelation)module.getRelation(name);
1172             relation.location = definition.location;
1173             TranslationContext context = createTranslationContext();
1174             definition.translateTo(context, relation);
1175         }
1176     }
1177
1178     private TranslationContext createTranslationContext() {
1179         return new TranslationContext(compilationContext, null);
1180     }
1181
1182     private void handleAnnotation(SCLValue value, ArrayList<DValueAst> defs, DAnnotationAst annotation) {
1183         if(annotation.id.text.equals("@macro")) {
1184             value.setMacroRule(new StandardMacroRule());
1185         }
1186         else if(annotation.id.text.equals("@inline")) {
1187             try {
1188                 int arity = defs.get(0).lhs.getFunctionDefinitionPatternArity();
1189                 int phaseMask = 0xffffffff;
1190                 if(annotation.parameters.length > 0) {
1191                     phaseMask = Integer.parseInt(((EIntegerLiteral)annotation.parameters[0]).getValue());
1192                 }
1193                 value.addProperty(new InlineProperty(arity, phaseMask));
1194             } catch(NotPatternException e) {
1195                 errorLog.log(annotation.location, "Inline annotation is invalid: this is not a function.");
1196             }
1197         }
1198         else if(annotation.id.text.equals("@private")) {
1199             value.addProperty(PrivateProperty.INSTANCE);
1200         }
1201         else if(annotation.id.text.equals("@deprecated")) {
1202             String description = "";
1203             if(annotation.parameters.length > 0) {
1204                 if(annotation.parameters.length > 1)
1205                     errorLog.log(annotation.location, "Invalid number of parameters, expected one string.");
1206                 else {
1207                     String temp = AnnotationUtils.extractString(annotation.parameters[0]);
1208                     if(temp == null)
1209                         errorLog.log(annotation.location, "Invalid parameter, expected one string.");
1210                     else
1211                         description = temp;
1212                 }
1213             }
1214             value.addProperty(new DeprecatedProperty(description));
1215         }
1216         else
1217             errorLog.log(annotation.location, "Unknown annotation.");
1218     }
1219
1220     public void addSupplementedTypeAnnotationsToEnvironment() {
1221         for(SupplementedValueType valueType : supplementedTypeAnnotations) {
1222             Type type = Types.closure(valueType.type);
1223             String name = valueType.name;
1224             SCLValue value = module.getValue(name);
1225             if(value == null)
1226                 errorLog.log(valueType.position,
1227                         name + " is not defined.");
1228             else if(value.getType()==null)
1229                 value.setType(type);
1230             else
1231                 errorLog.log(valueType.position,
1232                         "Type of "+name+" has already been declared in this module.");
1233         }
1234     }
1235
1236     public void addFixityToEnvironment(ArrayList<DFixityAst> fixityAst) {
1237         for(DFixityAst fixity : fixityAst) {
1238             for(EVar symbol : fixity.symbols) {
1239                 String name = symbol.name;
1240                 SCLValue value = module.getValue(name);
1241                 if(value == null)
1242                     errorLog.log(symbol.location,
1243                             name + " is not defined.");
1244                 else
1245                     value.setPrecedence(fixity.precedence);
1246             }
1247         }
1248     }
1249
1250     public void addCoverageBranchPoints() {
1251         branchPoints = new THashMap<String, BranchPoint[]>();
1252         BranchPointInjector injector = new BranchPointInjector();
1253         for(String valueName : valueDefinitionsAst.getValueNames()) {
1254             for(DValueAst valueAst : valueDefinitionsAst.getDefinition(valueName))
1255                 valueAst.value = injector.injectBranchPoint(valueAst.value);
1256             branchPoints.put(valueName, injector.getAndClearBranchPoints());
1257         }
1258     }
1259 }