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.Constant;
  11 import org.simantics.scl.compiler.constants.JavaTypeInstanceConstructor;
  12 import org.simantics.scl.compiler.constants.SCLConstructor;
  13 import org.simantics.scl.compiler.constants.StringConstant;
  14 import org.simantics.scl.compiler.constants.generic.CallJava;
  15 import org.simantics.scl.compiler.constants.generic.ClassRef;
  16 import org.simantics.scl.compiler.constants.generic.ConvertToListFilter;
  17 import org.simantics.scl.compiler.constants.generic.MethodRef;
  18 import org.simantics.scl.compiler.constants.generic.MethodRef.FieldRef;
  19 import org.simantics.scl.compiler.constants.generic.OutputFilter;
  20 import org.simantics.scl.compiler.constants.generic.ParameterStackItem;
  21 import org.simantics.scl.compiler.constants.generic.Pop2OutputFilter;
  22 import org.simantics.scl.compiler.constants.generic.PopOutputFilter;
  23 import org.simantics.scl.compiler.constants.generic.StackItem;
  24 import org.simantics.scl.compiler.constants.generic.ThreadLocalStackItem;
  25 import org.simantics.scl.compiler.constants.singletons.SafeCoerce;
  26 import org.simantics.scl.compiler.elaboration.contexts.TranslationContext;
  27 import org.simantics.scl.compiler.elaboration.contexts.TypeTranslationContext;
  28 import org.simantics.scl.compiler.elaboration.errors.NotPatternException;
  29 import org.simantics.scl.compiler.elaboration.expressions.EApply;
  30 import org.simantics.scl.compiler.elaboration.expressions.EGetConstraint;
  31 import org.simantics.scl.compiler.elaboration.expressions.EIntegerLiteral;
  32 import org.simantics.scl.compiler.elaboration.expressions.EListLiteral;
  33 import org.simantics.scl.compiler.elaboration.expressions.ELiteral;
  34 import org.simantics.scl.compiler.elaboration.expressions.EVar;
  35 import org.simantics.scl.compiler.elaboration.expressions.Expression;
  36 import org.simantics.scl.compiler.elaboration.expressions.Variable;
  37 import org.simantics.scl.compiler.elaboration.expressions.annotations.AnnotationUtils;
  38 import org.simantics.scl.compiler.elaboration.fundeps.Fundep;
  39 import org.simantics.scl.compiler.elaboration.java.JavaMethodDeclaration;
  40 import org.simantics.scl.compiler.elaboration.macros.StandardMacroRule;
  41 import org.simantics.scl.compiler.elaboration.modules.DeprecatedProperty;
  42 import org.simantics.scl.compiler.elaboration.modules.InlineProperty;
  43 import org.simantics.scl.compiler.elaboration.modules.MethodImplementation;
  44 import org.simantics.scl.compiler.elaboration.modules.PrivateProperty;
  45 import org.simantics.scl.compiler.elaboration.modules.SCLValue;
  46 import org.simantics.scl.compiler.elaboration.modules.TypeAlias;
  47 import org.simantics.scl.compiler.elaboration.modules.TypeClass;
  48 import org.simantics.scl.compiler.elaboration.modules.TypeClassInstance;
  49 import org.simantics.scl.compiler.elaboration.modules.TypeClassMethod;
  50 import org.simantics.scl.compiler.elaboration.query.Query;
  51 import org.simantics.scl.compiler.elaboration.query.pre.QPreGuard;
  52 import org.simantics.scl.compiler.elaboration.relations.ConcreteRelation;
  53 import org.simantics.scl.compiler.elaboration.rules.MappingRelation;
  54 import org.simantics.scl.compiler.elaboration.rules.SectionName;
  55 import org.simantics.scl.compiler.elaboration.rules.TransformationRule;
  56 import org.simantics.scl.compiler.environment.AmbiguousNameException;
  57 import org.simantics.scl.compiler.environment.Environment;
  58 import org.simantics.scl.compiler.environment.EnvironmentFactory;
  59 import org.simantics.scl.compiler.environment.Environments;
  60 import org.simantics.scl.compiler.errors.ErrorLog;
  61 import org.simantics.scl.compiler.errors.Locations;
  62 import org.simantics.scl.compiler.internal.codegen.effects.EffectConstructor;
  63 import org.simantics.scl.compiler.internal.codegen.effects.ThreadLocalVariable;
  64 import org.simantics.scl.compiler.internal.codegen.types.JavaReferenceValidator;
  65 import org.simantics.scl.compiler.internal.codegen.types.JavaReferenceValidatorFactory;
  66 import org.simantics.scl.compiler.internal.codegen.types.JavaTypeTranslator;
  67 import org.simantics.scl.compiler.internal.codegen.types.StandardTypeConstructor;
  68 import org.simantics.scl.compiler.internal.codegen.utils.Constants;
  69 import org.simantics.scl.compiler.internal.codegen.utils.JavaNamingPolicy;
  70 import org.simantics.scl.compiler.internal.codegen.utils.MethodBuilderBase;
  71 import org.simantics.scl.compiler.internal.deriving.InstanceDeriver;
  72 import org.simantics.scl.compiler.internal.deriving.InstanceDerivers;
  73 import org.simantics.scl.compiler.internal.elaboration.profiling.BranchPointInjector;
  74 import org.simantics.scl.compiler.internal.elaboration.utils.StronglyConnectedComponents;
  75 import org.simantics.scl.compiler.internal.header.ModuleHeader;
  76 import org.simantics.scl.compiler.internal.parsing.declarations.ConstructorAst;
  77 import org.simantics.scl.compiler.internal.parsing.declarations.DAnnotationAst;
  78 import org.simantics.scl.compiler.internal.parsing.declarations.DClassAst;
  79 import org.simantics.scl.compiler.internal.parsing.declarations.DDataAst;
  80 import org.simantics.scl.compiler.internal.parsing.declarations.DDerivingInstanceAst;
  81 import org.simantics.scl.compiler.internal.parsing.declarations.DEffectAst;
  82 import org.simantics.scl.compiler.internal.parsing.declarations.DFixityAst;
  83 import org.simantics.scl.compiler.internal.parsing.declarations.DInstanceAst;
  84 import org.simantics.scl.compiler.internal.parsing.declarations.DMappingRelationAst;
  85 import org.simantics.scl.compiler.internal.parsing.declarations.DRelationAst;
  86 import org.simantics.scl.compiler.internal.parsing.declarations.DRuleAst;
  87 import org.simantics.scl.compiler.internal.parsing.declarations.DTypeAst;
  88 import org.simantics.scl.compiler.internal.parsing.declarations.DValueAst;
  89 import org.simantics.scl.compiler.internal.parsing.declarations.DValueTypeAst;
  90 import org.simantics.scl.compiler.internal.parsing.exceptions.SCLSyntaxErrorException;
  91 import org.simantics.scl.compiler.internal.parsing.translation.ProcessedDClassAst;
  92 import org.simantics.scl.compiler.internal.parsing.translation.ProcessedDInstanceAst;
  93 import org.simantics.scl.compiler.internal.parsing.translation.RelationRepository;
  94 import org.simantics.scl.compiler.internal.parsing.translation.ValueRepository;
  95 import org.simantics.scl.compiler.internal.parsing.types.TypeAst;
  96 import org.simantics.scl.compiler.module.ConcreteModule;
  97 import org.simantics.scl.compiler.module.ImportDeclaration;
  98 import org.simantics.scl.compiler.module.InvalidModulePathException;
  99 import org.simantics.scl.compiler.module.ModuleUtils;
 100 import org.simantics.scl.compiler.module.repository.ImportFailure;
 101 import org.simantics.scl.compiler.module.repository.ImportFailureException;
 102 import org.simantics.scl.compiler.types.TCon;
 103 import org.simantics.scl.compiler.types.TForAll;
 104 import org.simantics.scl.compiler.types.TFun;
 105 import org.simantics.scl.compiler.types.TPred;
 106 import org.simantics.scl.compiler.types.TVar;
 107 import org.simantics.scl.compiler.types.Type;
 108 import org.simantics.scl.compiler.types.Types;
 109 import org.simantics.scl.compiler.types.kinds.Kind;
 110 import org.simantics.scl.compiler.types.kinds.Kinds;
 111 import org.simantics.scl.compiler.types.util.MultiFunction;
 112 import org.simantics.scl.runtime.profiling.BranchPoint;
 113
 114 import gnu.trove.list.array.TIntArrayList;
 115 import gnu.trove.map.hash.THashMap;
 116 import gnu.trove.map.hash.TObjectIntHashMap;
 117 import gnu.trove.procedure.TObjectObjectProcedure;
 118 import gnu.trove.set.hash.THashSet;
 119 import gnu.trove.set.hash.TIntHashSet;
 120
 121 public class Elaboration {
 122     // inputs
 123     private final CompilationContext compilationContext;
 124     private final ErrorLog errorLog;
 125     private final String moduleName;
 126     private final ModuleHeader moduleHeader;
 127     private final ArrayList<ImportDeclaration> importsAst;
 128     private final JavaReferenceValidatorFactory jrvFactory;
 129     final JavaReferenceValidator<Object, Object, Object, Object> javaReferenceValidator;
 130     private final ValueRepository valueDefinitionsAst;
 131     private final RelationRepository relationDefinitionsAst;
 132
 133     // creates
 134     ConcreteModule module;
 135     Environment importedEnvironment;
 136     ArrayList<SupplementedValueType> supplementedTypeAnnotations = new ArrayList<SupplementedValueType>();
 137
 138     JavaTypeTranslator javaTypeTranslator;
 139     ArrayList<StandardTypeConstructor> dataTypes = new ArrayList<StandardTypeConstructor>();
 140     THashMap<String, ClassRef> classRefs = new THashMap<String, ClassRef>();
 141     THashMap<String, BranchPoint[]> branchPoints;
 142
 143     public Elaboration(CompilationContext compilationContext, CompilationTimer timer, EnvironmentFactory localEnvironmentFactory,
 144             String moduleName, ModuleHeader moduleHeader, ArrayList<ImportDeclaration> importsAst,
 145             JavaReferenceValidatorFactory jrvFactory,
 146             ValueRepository valueDefinitionsAst,
 147             RelationRepository relationDefinitionsAst) {
 148         this.compilationContext = compilationContext;
 149         this.errorLog = compilationContext.errorLog;
 150         this.moduleName = moduleName;
 151         this.moduleHeader = moduleHeader;
 152         importsAst = processRelativeImports(importsAst);
 153         this.importsAst = importsAst;
 154         this.jrvFactory = jrvFactory;
 155         this.javaReferenceValidator = moduleHeader == null || moduleHeader.classLoader == null
 156                 ? jrvFactory.getDefaultJavaReferenceValidator()
 157                 : jrvFactory.getJavaReferenceValidator(moduleHeader.classLoader);
 158         if(javaReferenceValidator == null)
 159             errorLog.log(moduleHeader.classLoaderLocation, "Didn't find the specified class loader.");
 160         this.valueDefinitionsAst = valueDefinitionsAst;
 161         this.relationDefinitionsAst = relationDefinitionsAst;
 162
 163         module = new ConcreteModule(moduleName);
 164         compilationContext.module = module;
 165         if(moduleHeader != null && moduleHeader.defaultLocalName != null)
 166                 module.setDefaultLocalName(moduleHeader.defaultLocalName);
 167         try {
 168             if(timer != null)
 169                 timer.suspendTimer();
 170             importedEnvironment = localEnvironmentFactory.createEnvironment(
 171                     importsAst.toArray(new ImportDeclaration[importsAst.size()]));
 172             if(timer != null)
 173                 timer.continueTimer();
 174             compilationContext.environment = new EnvironmentOfModule(importedEnvironment, module);
 175         } catch (ImportFailureException e) {
 176             for(ImportFailure failure : e.failures)
 177                 errorLog.log(failure.location, failure.toString());
 178             return;
 179         }
 180         for(ImportDeclaration importAst : importsAst)
 181             this.module.addDependency(new ImportDeclaration(
 182                     importAst.moduleName,
 183                     importAst.reexport ? importAst.localName : null,
 184                     false,
 185                     importAst.spec));
 186         localEnvironmentFactory.addBuiltinDependencies(module);
 187         compilationContext.namingPolicy = new JavaNamingPolicy(moduleName);
 188     }
 189
 190     private ArrayList<ImportDeclaration> processRelativeImports(ArrayList<ImportDeclaration> relativeImports) {
 191         ArrayList<ImportDeclaration> absoluteImports = new ArrayList<ImportDeclaration>(relativeImports.size());
 192         for(ImportDeclaration relativeImport : relativeImports) {
 193             if(relativeImport.moduleName.startsWith(".")) {
 194                                 try {
 195                                         String absoluteModuleName = ModuleUtils.resolveAbsolutePath(moduleName, relativeImport.moduleName);
 196                     ImportDeclaration absoluteImport = new ImportDeclaration(
 197                             absoluteModuleName, relativeImport.localName,
 198                             relativeImport.reexport, relativeImport.spec);
 199                     absoluteImport.location = relativeImport.location;
 200                     absoluteImports.add(absoluteImport);
 201                                 } catch (InvalidModulePathException e) {
 202                                         errorLog.log(relativeImport.location, e.getMessage());
 203                                 }
 204             }
 205             else
 206                 absoluteImports.add(relativeImport);
 207         }
 208         return absoluteImports;
 209     }
 210
 211     public void addTypesToEnvironment(
 212             ArrayList<DDataAst> dataTypesAst,
 213             ArrayList<DTypeAst> typeAliasesAst,
 214             ArrayList<DEffectAst> effectsAst) {
 215         for(DDataAst dataType : dataTypesAst) {
 216             dataType.parameterKinds = new Kind[dataType.parameters.length];
 217             Kind constructorKind = Kinds.STAR;
 218             for(int i=dataType.parameters.length-1;i>=0;--i) {
 219                 Kind kind = Kinds.metaVar();
 220                 dataType.parameterKinds[i] = kind;
 221                 constructorKind = Kinds.arrow(kind, constructorKind);
 222             }
 223
 224             StandardTypeConstructor typeConstructor = new StandardTypeConstructor(
 225                     Types.con(moduleName, dataType.name), constructorKind);
 226
 227             NameExistenceChecks.checkIfTypeExists(errorLog,
 228                     dataType.location, importedEnvironment, dataType.name);
 229             if(module.addTypeDescriptor(dataType.name, typeConstructor))
 230                 errorLog.log(dataType.location, "Type "+dataType.name+" has already been defined in this module.");
 231             dataType.typeConstructor = typeConstructor;
 232         }
 233
 234         for(DTypeAst typeAlias : typeAliasesAst) {
 235             TypeAlias alias = new TypeAlias(Types.con(moduleName, typeAlias.name), typeAlias.parameters.length);
 236             NameExistenceChecks.checkIfTypeExists(errorLog,
 237                     typeAlias.location, importedEnvironment, typeAlias.name);
 238             if(module.addTypeDescriptor(typeAlias.name, alias)) {
 239                 errorLog.log(typeAlias.location, "Type alias "+typeAlias.name+" has already been defined in this module.");
 240             }
 241         }
 242
 243         for(DEffectAst effect : effectsAst) {
 244             EffectConstructor effectConstructor = new EffectConstructor(Types.con(moduleName, effect.name));
 245             effectConstructor.addThreadLocalVariable(
 246                     new ThreadLocalVariable(
 247                             effect.variableName,
 248                             TypeDesc.forClass(effect.threadLocalType)
 249                             ));
 250             if(module.addEffectConstructor(effect.name, effectConstructor))
 251                 errorLog.log(effect.location, "Type "+effect.name+" has already been defined in this module.");
 252         }
 253         javaTypeTranslator = new JavaTypeTranslator(compilationContext.environment);
 254         compilationContext.javaTypeTranslator = javaTypeTranslator;
 255     }
 256
 257     private static final int[] EMPTY_INT_ARRAY = new int[0];
 258
 259     public void processTypeAliases(ArrayList<DTypeAst> typeAliasesAst) {
 260         TObjectIntHashMap<String> typeAliasMap = new TObjectIntHashMap<String>();
 261         for(int i=0;i<typeAliasesAst.size();++i)
 262             typeAliasMap.put(typeAliasesAst.get(i).name, i);
 263         TIntHashSet tempIntSet = new TIntHashSet();
 264         ArrayList<DTypeAst> orderedTypeAliases = new ArrayList<DTypeAst>(typeAliasesAst.size());
 265         //for(int i=0;i<typeAliasesAst.size();++i)
 266         //    System.out.println(i + "# " + typeAliasesAst.get(i).name);
 267         new StronglyConnectedComponents(typeAliasesAst.size()) {
 268             @Override
 269             protected int[] findDependencies(int u) {
 270                 typeAliasesAst.get(u).type.collectReferences(typeAliasMap, tempIntSet);
 271                 if(tempIntSet.isEmpty())
 272                     return EMPTY_INT_ARRAY;
 273                 if(tempIntSet.contains(u)) {
 274                     errorLog.log(typeAliasesAst.get(u).location, "Type alias has a self reference.");
 275                     tempIntSet.remove(u);
 276                 }
 277                 int[] result = tempIntSet.toArray();
 278                 tempIntSet.clear();
 279                 //System.out.println(u + " -> " + Arrays.toString(result));
 280                 return result;
 281             }
 282             @Override
 283             protected void reportComponent(int[] component) {
 284                 //System.out.println("component: " + Arrays.toString(component));
 285                 if(component.length > 1) {
 286                     StringBuilder b = new StringBuilder();
 287                     b.append("Recursively defined type alias (");
 288                     long minLocation = typeAliasesAst.get(component[0]).location;
 289                     boolean first = true;
 290                     for(int u : component) {
 291                         DTypeAst typeAlias = typeAliasesAst.get(u);
 292                         if(first)
 293                             first = false;
 294                         else
 295                             b.append(", ");
 296                         b.append(typeAlias.name);
 297                         if(Locations.beginOf(typeAlias.location) < Locations.beginOf(minLocation))
 298                             minLocation = typeAlias.location;
 299                     }
 300                     b.append(").");
 301                     errorLog.log(minLocation, b.toString());
 302                 }
 303                 else
 304                     orderedTypeAliases.add(typeAliasesAst.get(component[0]));
 305             }
 306         }.findComponents();
 307
 308         if(errorLog.hasNoErrors()) {
 309             for(DTypeAst typeAlias : orderedTypeAliases) {
 310                 TypeAlias alias = (TypeAlias)module.getTypeDescriptor(typeAlias.name);
 311                 TypeTranslationContext context = createTypeTranslationContext();
 312                 for(int i=0;i<typeAlias.parameters.length;++i)
 313                     context.pushTypeVar(typeAlias.parameters[i]);
 314                 alias.body = typeAlias.type.toType(context, Kinds.metaVar());
 315                 for(int i=0;i<typeAlias.parameters.length;++i)
 316                     alias.parameters[i] = context.popTypeVar(typeAlias.parameters[i], null);
 317             }
 318         }
 319     }
 320
 321     public void processDataTypes(ArrayList<DDataAst> dataTypesAst) {
 322         ArrayList<Runnable> fieldAccessorGenerators = new ArrayList<Runnable>();
 323         for(DDataAst dataTypeAst : dataTypesAst) {
 324             TypeTranslationContext context = createTypeTranslationContext();
 325             TVar[] typeParameters = new TVar[dataTypeAst.parameters.length];
 326             for(int i=0;i<dataTypeAst.parameters.length;++i)
 327                 typeParameters[i] = context.addTypeVar(dataTypeAst.parameters[i]);
 328             Constructor[] constructors = new Constructor[dataTypeAst.constructors.length];
 329             String className = null;
 330             boolean external = false;
 331             for(DAnnotationAst annotation : dataTypeAst.getAnnotations()) {
 332                 if(annotation.id.text.equals("@JavaType")) {
 333                     if(annotation.parameters.length != 1 ||
 334                             !(annotation.parameters[0] instanceof ELiteral) ||
 335                             !(((ELiteral)annotation.parameters[0]).getValue() instanceof StringConstant))
 336                         errorLog.log(annotation.location, "Invalid parameters. Expected @JavaType \"className\".");
 337                     else {
 338                         className = ((StringConstant)((ELiteral)annotation.parameters[0]).getValue()).getValue().replace('.', '/');
 339                         external = true;
 340                         break;
 341                     }
 342                 }
 343             }
 344
 345             boolean trivialDataType = dataTypeAst.constructors.length == 1 &&
 346                     dataTypeAst.constructors[0].parameters.length == 1;
 347             if(className == null && !trivialDataType)
 348                 className = compilationContext.namingPolicy.getDataTypeClassName(dataTypeAst.name);
 349
 350             StandardTypeConstructor dataType = dataTypeAst.typeConstructor;
 351
 352             dataType.setType(Types.con(moduleName, dataTypeAst.name), typeParameters);
 353             dataType.setConstructors(constructors);
 354             if(!trivialDataType)
 355                 dataType.setTypeDesc(TypeDesc.forClass(className));
 356             if(!external || dataTypeAst.constructors.length > 0) {
 357                 dataType.isOpen = false;
 358             }
 359             dataType.external = external;
 360             dataTypes.add(dataType);
 361             for(int j=0;j<constructors.length;++j) {
 362                 ConstructorAst constructor = dataTypeAst.constructors[j];
 363                 String name = constructor.name;
 364                 Type[] parameterTypes = new Type[constructor.parameters.length];
 365                 for(int i=constructor.parameters.length-1;i>=0;--i)
 366                     parameterTypes[i] = context.toType(constructor.parameters[i]);
 367                 String javaName = constructors.length == 1 ? className
 368                         : compilationContext.namingPolicy.getConstructorClassName(name);
 369                 String[] fieldNames = null;
 370                 for(DAnnotationAst annotation : constructor.annotations)
 371                     if(annotation.id.text.equals("@JavaType")) {
 372                         try {
 373                             javaName = ((StringConstant)((ELiteral)annotation.parameters[0])
 374                                     .getValue()).getValue();
 375                         } catch(Exception e) {
 376                             errorLog.log(annotation.parameters[0].location, "Invalid annotation parameter.");
 377                         }
 378                     }
 379                     else if(annotation.id.text.equals("@FieldNames")) {
 380                         try {
 381                             EListLiteral literal = (EListLiteral)annotation.parameters[0];
 382                             fieldNames = new String[literal.getComponents().length];
 383                             for(int i=0;i<fieldNames.length;++i) {
 384                                 Expression component = literal.getComponents()[i];
 385                                 if(component instanceof EVar)
 386                                     fieldNames[i] = ((EVar)component).name;
 387                                 else if(component instanceof ELiteral)
 388                                     fieldNames[i] = ((StringConstant)((ELiteral)component).getValue()).getValue();
 389                             }
 390                         } catch(Exception e) {
 391                             errorLog.log(annotation.parameters[0].location, "Invalid annotation parameter.");
 392                             fieldNames = null;
 393                         }
 394                     }
 395
 396                 constructors[j] = new Constructor(constructor.location, dataType,
 397                         Name.create(moduleName, name),
 398                         parameterTypes, javaName);
 399                 constructors[j].fieldNames = fieldNames;
 400                 constructors[j].recordFieldNames = constructor.fieldNames;
 401             }
 402             if(constructors.length == 1) {
 403                 Constructor constructor = constructors[0];
 404                 if(constructor.recordFieldNames != null) {
 405                     fieldAccessorGenerators.add(new Runnable() {
 406                         @Override
 407                         public void run() {
 408                             Type in = Types.apply(dataType.name, dataType.parameters);
 409                             for(int i=0;i<constructor.recordFieldNames.length;++i) {
 410                                 Type out = constructor.parameterTypes[i];
 411                                 Constant accessor;
 412                                 if(trivialDataType)
 413                                     accessor = new SafeCoerce(dataType.parameters, in, out);
 414                                 else
 415                                     accessor = new CallJava(dataType.parameters, Types.NO_EFFECTS, out,
 416                                             new Type[] {in}, new StackItem[] {new ParameterStackItem(0, in)},
 417                                             new FieldRef(constructor.javaName, constructor.fieldNames != null ? constructor.fieldNames[i] : "c" + i,
 418                                                     javaTypeTranslator.toTypeDesc(out)),
 419                                             null);
 420                                 module.addFieldAccessor(constructor.recordFieldNames[i], accessor);
 421                             }
 422                         }
 423                     });
 424                 }
 425             }
 426         }
 427
 428         for(Runnable fieldAccessorGenerator : fieldAccessorGenerators)
 429             fieldAccessorGenerator.run();
 430     }
 431
 432     public void processTypeClasses(ArrayList<ProcessedDClassAst> typeClassesAst) {
 433         for(ProcessedDClassAst pClassAst : typeClassesAst) {
 434             DClassAst classAst = pClassAst.orig;
 435
 436             if(module.getTypeClass(classAst.name) != null) {
 437                 errorLog.log(classAst.location, "Class "+classAst.name+" has already been defined in this module.");
 438                 continue;
 439             }
 440
 441             TypeTranslationContext context = createTypeTranslationContext();
 442
 443             TPred[] classContext = new TPred[classAst.context.length];
 444             for(int i=0;i<classContext.length;++i)
 445                 classContext[i] = context.toTFuncApply(classAst.context[i]);
 446
 447             TVar[] parameters = new TVar[classAst.parameters.length];
 448
 449             if(classAst.name.equals("Functor") || classAst.name.equals("Monad")) {
 450                 // FIXME hack
 451                 parameters[0] = context.resolveTypeVariable(pClassAst.orig.location, classAst.parameters[0], Kinds.STAR_TO_STAR);
 452             }
 453             else {
 454                 for(int i=0;i<parameters.length;++i)
 455                     parameters[i] = context.resolveTypeVariable(pClassAst.orig.location, classAst.parameters[i], Kinds.metaVar());
 456             }
 457
 458             TCon con = Types.con(moduleName, classAst.name);
 459             TypeClass typeClass = new TypeClass(classAst.location,
 460                     classContext,
 461                     con,
 462                     compilationContext.namingPolicy.getTypeClassInterfaceName(con),
 463                     parameters,
 464                     Fundep.mapFundeps(classAst.parameters, classAst.fundeps));
 465
 466             THashMap<String, TypeClassMethod> methods = typeClass.methods;
 467             for(DValueTypeAst methodDecl : pClassAst.typeDeclarations) {
 468                 try {
 469                     Type type;
 470                     try {
 471                         type = context.toType(methodDecl.type);
 472                     } catch(SCLSyntaxErrorException e) {
 473                         errorLog.log(e.location, e.getMessage());
 474                         continue;
 475                     }
 476                     for(EVar name : methodDecl.names) {
 477                         typeClass.methodNames.add(name.name);
 478                         methods.put(name.name,
 479                                 new TypeClassMethod(typeClass, name.name,
 480                                         compilationContext.namingPolicy.getMethodName(name.name),
 481                                         type, Types.getArity(type),
 482                                         name.location)
 483                                 );
 484                     }
 485                 } catch(RuntimeException e) {
 486                     errorLog.setExceptionPosition(methodDecl.location);
 487                     throw e;
 488                 }
 489             }
 490
 491             for(String methodName : pClassAst.defaultImplementations.getValueNames()) {
 492                 String fullName = "_" + classAst.name + "_default_" + methodName;
 493                 ArrayList<DValueAst> defs = pClassAst.defaultImplementations.getDefinition(methodName);
 494
 495                 TypeClassMethod method = typeClass.methods.get(methodName);
 496                 if(method == null) {
 497                     errorLog.log(defs.get(0).location, "Method " + methodName + " is not defined in this class.");
 498                     continue;
 499                 }
 500                 method.setDefaultImplementation(Name.create(moduleName, fullName));
 501
 502                 valueDefinitionsAst.addDefinitions(fullName, defs);
 503                 /*valueDefinitionsAst.addAnnotation(fullName, new DAnnotationAst(new EVar("@private"),
 504                         Collections.<Expression>emptyList()));*/
 505                 supplementedTypeAnnotations.add(new SupplementedValueType(defs.get(0).location, fullName, method.getType()));
 506             }
 507
 508             module.addTypeClass(classAst.name, typeClass);
 509         }
 510     }
 511
 512     private TypeTranslationContext createTypeTranslationContext() {
 513         return new TypeTranslationContext(compilationContext);
 514     }
 515
 516     public void processDerivingInstances(ArrayList<DDerivingInstanceAst> derivingInstancesAst,
 517             ArrayList<ProcessedDInstanceAst> instancesAst) {
 518         for(DDerivingInstanceAst derivingInstance : derivingInstancesAst) {
 519             String name = derivingInstance.name.name;
 520             TCon con;
 521             try {
 522                 con = Environments.getTypeClassName(compilationContext.environment, name);
 523             } catch (AmbiguousNameException e) {
 524                 errorLog.log(derivingInstance.name.location, e.getMessage());
 525                 continue;
 526             }
 527             if(con == null) {
 528                 errorLog.log(derivingInstance.name.location, "Couldn't resolve class " + name + ".");
 529                 continue;
 530             }
 531             InstanceDeriver deriver = InstanceDerivers.get(con);
 532             if(deriver == null)
 533                 errorLog.log(derivingInstance.location, "Doesn't know how to derive " + name + ".");
 534             else
 535                 deriver.derive(errorLog, compilationContext.environment, instancesAst, derivingInstance);
 536         }
 537     }
 538
 539     public void processInstances(ArrayList<ProcessedDInstanceAst> instancesAst) {
 540         THashSet<TPred> instanceClashCheckSet = new THashSet<TPred>();
 541         for(ProcessedDInstanceAst pInstanceAst : instancesAst) {
 542             DInstanceAst instanceAst = pInstanceAst.orig;
 543             try {
 544                 TypeTranslationContext context = createTypeTranslationContext();
 545
 546                 String name = instanceAst.name.name;
 547                 TCon typeClassCon;
 548                 try {
 549                     typeClassCon = Environments.getTypeClassName(compilationContext.environment, name);
 550                 } catch (AmbiguousNameException e) {
 551                     errorLog.log(instanceAst.name.location, e.getMessage());
 552                     continue;
 553                 }
 554                 if(typeClassCon == null) {
 555                     errorLog.log(instanceAst.name.location, "Couldn't resolve class " + name + ".");
 556                     continue;
 557                 }
 558                 TypeClass typeClass = compilationContext.environment.getTypeClass(typeClassCon);
 559                 pInstanceAst.typeClass = typeClass;
 560
 561                 if(instanceAst.types.length != typeClass.parameters.length) {
 562                     errorLog.log(instanceAst.location, "Wrong number of parameters to type class " + typeClassCon.name + ".");
 563                     continue;
 564                 }
 565                 Type[] parameters = new Type[instanceAst.types.length];
 566                 for(int i=0;i<parameters.length;++i)
 567                     parameters[i] = context.toType(instanceAst.types[i], typeClass.parameters[i].getKind() /* FIXME */);
 568                 TPred instance = Types.pred(typeClassCon, parameters);
 569
 570                 if(!instanceClashCheckSet.add(instance)) {
 571                     errorLog.log(instanceAst.location, "Duplicate definition of the instance " + instance + ".");
 572                     continue;
 573                 }
 574
 575                 TPred[] instanceContext = new TPred[instanceAst.context.length];
 576                 for(int i=0;i<instanceContext.length;++i)
 577                     instanceContext[i] = context.toTFuncApply(instanceAst.context[i]);
 578
 579                 String javaName = compilationContext.namingPolicy.getInstanceClassName(instance);
 580                 String instancePrefix = instance.toName() + "$";
 581
 582                 ValueRepository valueDefs = pInstanceAst.valueDefs;
 583
 584                 THashMap<String, MethodImplementation> methodImplementations =
 585                         new THashMap<String, MethodImplementation>();
 586                 for(String valueName : valueDefs.getValueNames()) {
 587                     String fullName = instancePrefix + valueName;
 588                     long loc = valueDefs.getDefinition(valueName).get(0).location;
 589                     valueDefinitionsAst.addFrom(valueDefs, valueName, fullName);
 590                     /*valueDefinitionsAst.addAnnotation(fullName, new DAnnotationAst(new EVar("@private"),
 591                             Collections.<Expression>emptyList()));*/
 592                     TypeClassMethod method = typeClass.methods.get(valueName);
 593                     if(method == null) {
 594                         errorLog.log(loc, "Method " + valueName + " is not defined in the type class " + typeClass.name.name + ".");
 595                         continue;
 596                     }
 597                     Type type = method.getBaseType().replace(typeClass.parameters, parameters);
 598                     for(int i=instanceContext.length-1;i>=0;--i)
 599                         type = Types.constrained(instanceContext[i], type);
 600                     //System.out.println(valueName + " :: " + type);
 601                     supplementedTypeAnnotations.add(
 602                             new SupplementedValueType(loc, fullName, type));
 603                     methodImplementations.put(valueName,
 604                             new MethodImplementation(Name.create(moduleName, fullName), false));
 605                 }
 606
 607                 // Are all necessary methods defined
 608                 for(String methodName : typeClass.methods.keySet())
 609                     if(!methodImplementations.containsKey(methodName)) {
 610                         Name defaultImplementation = typeClass.methods.get(methodName).getDefaultImplementation();
 611                         if(defaultImplementation == null)
 612                             errorLog.log(instanceAst.location, "Method " + methodName + " is not defined.");
 613                         else
 614                             methodImplementations.put(methodName,
 615                                     new MethodImplementation(defaultImplementation, true));
 616                     }
 617
 618                 JavaTypeInstanceConstructor generator = new JavaTypeInstanceConstructor(javaName, instance, instanceContext);
 619                 if(instanceContext.length == 0)
 620                     generator.setHasStaticInstance(true);
 621
 622                 TypeClassInstance typeClassInstance =
 623                         new TypeClassInstance(instanceAst.location, typeClass, generator,
 624                                 generator.getTypeParameters(),
 625                                 instanceContext, instance, methodImplementations,
 626                                 javaName);
 627
 628                 generator.setInstance(typeClassInstance);
 629
 630                 module.addTypeClassInstance(typeClassCon, typeClassInstance);
 631             } catch(RuntimeException e) {
 632                 errorLog.setExceptionPosition(instanceAst.location);
 633                 throw e;
 634             }
 635         }
 636
 637         // Generate superclass functions
 638         for(ArrayList<TypeClassInstance> instanceArray : module.getTypeInstances().values())
 639             for(TypeClassInstance instance : instanceArray) {
 640                 try {
 641                     TypeClass typeClass = instance.typeClass;
 642                     int superCount = typeClass.context.length;
 643
 644                     instance.superExpressions = new SCLValue[superCount];
 645                     for(int i=0;i<superCount;++i) {
 646                         TPred type = (TPred)typeClass.context[i]
 647                                 .replace(typeClass.parameters, instance.instance.parameters);
 648                         SCLValue value = new SCLValue(Name.create(moduleName,
 649                                 instance.javaName.substring(instance.javaName.indexOf('$')+1) + "_super" + i));
 650                         //value.addProperty(PrivateProperty.INSTANCE);
 651                         module.addValue(value);
 652                         Expression expression = new EGetConstraint(instance.location, type);
 653                         value.setExpression(expression);
 654                         value.setType(Types.forAll(instance.generatorParameters, Types.constrained(instance.context, type)));
 655                         value.getProperties().add(new InlineProperty(instance.context.length, 0xffffffff));
 656                         //TypeUnparsingContext tuc = new TypeUnparsingContext();
 657                         // TODO error handling
 658                         instance.superExpressions[i] = value;
 659                     }
 660                 } catch(RuntimeException e) {
 661                     errorLog.setExceptionPosition(instance.getLocation());
 662                     throw e;
 663                 }
 664             }
 665     }
 666
 667     public void processJavaMethods(ArrayList<JavaMethodDeclaration> javaMethodDeclarations) {
 668         for(JavaMethodDeclaration javaMethod : javaMethodDeclarations) {
 669             String name = javaMethod.methodName.name;
 670             String javaName = name;
 671             ArrayList<DAnnotationAst> annotations =
 672                     valueDefinitionsAst.getAnnotations(name);
 673             boolean isPrivate = false;
 674             if(annotations != null) {
 675                 for(DAnnotationAst annotation : annotations)
 676                     if(annotation.id.text.equals("@JavaName")) {
 677                         String temp = AnnotationUtils.processStringAnnotation(errorLog, annotation);
 678                         if(temp != null)
 679                             javaName = temp;
 680                     }
 681                     else if(annotation.id.text.equals("@private")) {
 682                         AnnotationUtils.processTagAnnotation(errorLog, annotation);
 683                         isPrivate = true;
 684                     }
 685             }
 686
 687             Type type = createTypeTranslationContext().toType(javaMethod.type);
 688
 689             CallJava callJava = resolveMethod(
 690                     javaMethod.location,
 691                     javaMethod.className,
 692                     javaName,
 693                     type);
 694             if(callJava != null) {
 695                 NameExistenceChecks.checkIfValueExists(errorLog, javaMethod.location,
 696                         importedEnvironment, name);
 697                 SCLValue value = module.addValue(name, callJava);
 698                 value.definitionLocation = javaMethod.methodName.location;
 699                 if(isPrivate)
 700                     value.addProperty(PrivateProperty.INSTANCE);
 701             }
 702         }
 703     }
 704
 705     /**
 706      * Convert a java class method into a {@link CallJava} instance.
 707      * Compilation errors are logged for failures in finding the named class or in accessing the method.
 708      * The return value for errors is {@code null}.
 709      *
 710      * @param loc  SCL source location
 711      * @param className  Name of the class
 712      * @param methodName  Name of the method
 713      * @param type  The expected SCL type of the method
 714      * @return  A new JavaCall instance, or null if the given method can not be instantiated.
 715      */
 716     private CallJava resolveMethod(long loc,
 717             String className, String methodName, Type type) {
 718         // Resolve class
 719         ClassRef classRef = classRefs.get(className);
 720         if(classRef == null) {
 721             if(classRefs.containsKey(className))
 722                 return null;
 723             classRef = javaReferenceValidator.getClassRef(className);
 724             classRefs.put(className, classRef);
 725             if(classRef == null) {
 726                 errorLog.log(loc, "Didn't find class " + className + ".");
 727                 return null;
 728             }
 729             if(!javaReferenceValidator.isPublic(classRef.getClass())) {
 730                 errorLog.log(loc, "Class " + className + " is not public.");
 731                 return null;
 732             }
 733
 734         }
 735
 736         // Resolve method
 737         List<MethodRef> methodRefs = classRef.getMethodRefs(methodName);
 738         if(methodRefs.isEmpty()) {
 739             errorLog.log(loc, "Didn't find any public method or field with name '" + methodName + "' from class " + className + ".");
 740             return null;
 741         }
 742
 743         ArrayList<CallJava> candidates = new ArrayList<CallJava>(2);
 744         for(MethodRef methodRef : methodRefs) {
 745             CallJava candidate = matchType(methodRef, type);
 746             if(candidate != null)
 747                 candidates.add(candidate);
 748         }
 749
 750         if(candidates.isEmpty()) {
 751             StringBuilder b = new StringBuilder();
 752             b.append("Didn't find any public method or field matching the type " + type + ". The following methods and fields were tried:");
 753             for(MethodRef methodRef : methodRefs) {
 754                 b.append("\n    ");
 755                 b.append(methodRef);
 756             }
 757             b.append("\nbut expected something like:");
 758             {
 759                 MultiFunction mFun = Types.matchFunction(type);
 760                 b.append("\n    public static ");
 761                 b.append(javaTypeTranslator.toTypeDesc(mFun.returnType).getFullName()).append(' ').append(methodName).append('(');
 762                 boolean first = true;
 763                 for(Type parameter : mFun.parameterTypes) {
 764                     if(first)
 765                         first = false;
 766                     else
 767                         b.append(", ");
 768                     b.append(javaTypeTranslator.toTypeDesc(parameter).getFullName());
 769                 }
 770                 b.append(')');
 771             }
 772             errorLog.log(loc, b.toString());
 773             return null;
 774         }
 775         else if(candidates.size() == 1)
 776             return candidates.get(0);
 777         else {
 778             // Try to find the best match
 779             ArrayList<CallJava> bestCandidates = new ArrayList<CallJava>(candidates.size());
 780             loop: for(CallJava candidate : candidates) {
 781                 Iterator<CallJava> it = bestCandidates.iterator();
 782                 while(it.hasNext()) {
 783                     CallJava b = it.next();
 784                     switch(candidate.compareTo(javaReferenceValidator, b)) {
 785                     case CallJava.LESS:
 786                     case CallJava.EQUAL:
 787                         continue loop;
 788                     case CallJava.GREATER:
 789                         it.remove();
 790                         break;
 791                     case CallJava.INCOMPARABLE:
 792                         break;
 793                     }
 794                 }
 795                 bestCandidates.add(candidate);
 796             }
 797
 798             if(bestCandidates.size() == 1) {
 799                 // System.out.println("Choose: " + bestCandidates.get(0).getMethodRef());
 800                 return bestCandidates.get(0);
 801             }
 802             else {
 803                 StringBuilder b = new StringBuilder();
 804                 b.append("Found more than one incomparable public methods the type " + type + ":");
 805                 for(CallJava callJava : bestCandidates) {
 806                     b.append("\n    ");
 807                     b.append(callJava.getMethodRef());
 808                 }
 809                 errorLog.log(loc, b.toString());
 810                 return null;
 811             }
 812         }
 813     }
 814
 815     private CallJava matchType(MethodRef methodRef, Type type) {
 816         //System.out.println("-----------------------------------------------------");
 817         //System.out.println("method: " + methodRef);
 818         //System.out.println("type: " + type);
 819
 820         type = Types.canonical(type);
 821         while(type instanceof TForAll)
 822             type = Types.canonical(((TForAll)type).type);
 823
 824         TypeDesc[] expectedParameterTypes = methodRef.getParameterTypes();
 825
 826         ArrayList<Type> parameterTypes = new ArrayList<Type>();
 827         Type effect = Types.NO_EFFECTS;
 828         Type returnType = type;
 829
 830         StackItem[] stackItems = new StackItem[expectedParameterTypes.length];
 831         TIntArrayList unresolvedItems = new TIntArrayList();
 832
 833         loop:
 834         for(int i=0;i<expectedParameterTypes.length;++i) {
 835             Type parameterType;
 836             TypeDesc providedParameterType;
 837             do {
 838                 if(effect != Types.NO_EFFECTS || !(returnType instanceof TFun)) {
 839                     while(i < expectedParameterTypes.length)
 840                         unresolvedItems.add(i++);
 841                     break loop;
 842                 }
 843                 TFun fun = (TFun)returnType;
 844                 parameterType = Types.canonical(fun.domain);
 845                 parameterTypes.add(parameterType);
 846                 effect = Types.canonical(fun.effect);
 847                 returnType = Types.canonical(fun.range);
 848                 providedParameterType = javaTypeTranslator.toTypeDesc(parameterType);
 849             } while(providedParameterType.equals(TypeDesc.VOID));
 850
 851             while(true) {
 852                 TypeDesc expectedParameterType = expectedParameterTypes[i];
 853                 if(javaReferenceValidator.isAssignableFrom(expectedParameterType,
 854                         providedParameterType)) {
 855                     stackItems[i] = new ParameterStackItem(
 856                             parameterTypes.size()-1,
 857                             parameterType);
 858                     break;
 859                 }
 860                 else
 861                     unresolvedItems.add(i++);
 862                 if(i == expectedParameterTypes.length) {
 863                     parameterTypes.remove(parameterTypes.size()-1);
 864                     returnType = Types.functionE(parameterType, effect, returnType);
 865                     break;
 866                 }
 867             }
 868         }
 869         //System.out.println("returnType: " + returnType);
 870         if(!unresolvedItems.isEmpty()) {
 871             ArrayList<TCon> concreteEffects = new ArrayList<TCon>();
 872             effect.collectConcreteEffects(concreteEffects);
 873
 874             for(TCon eff : concreteEffects) {
 875                 EffectConstructor effC = compilationContext.environment.getEffectConstructor(eff);
 876                 for(ThreadLocalVariable var : effC.getThreadLocalVariables()) {
 877                     for(int i=0;i<unresolvedItems.size();++i) {
 878                         int id = unresolvedItems.get(i);
 879                         if(!expectedParameterTypes[id].equals(TypeDesc.OBJECT) &&
 880                                 javaReferenceValidator.isAssignableFrom(expectedParameterTypes[id], var.type)) {
 881                             stackItems[id] = new ThreadLocalStackItem(var.variableName, var.type);
 882                             unresolvedItems.removeAt(i);
 883                             --i;
 884                         }
 885                     }
 886                 }
 887             }
 888
 889             if(!unresolvedItems.isEmpty())
 890                 return null;
 891             /*System.out.print("Unresolved: ");
 892             boolean first = true;
 893             for(int i=0;i<unresolvedItems.size();++i) {
 894                 if(first)
 895                     first = false;
 896                 else
 897                     System.out.print(", ");
 898                 System.out.print(expectedParameterTypes[unresolvedItems.get(i)]);
 899             }
 900             System.out.println();*/
 901         }
 902         OutputFilter filter = null;
 903         {
 904             TypeDesc providedReturnType = methodRef.getReturnType();
 905             if(!providedReturnType.equals(Constants.FUNCTION)) {
 906                 while(returnType instanceof TFun && effect == Types.NO_EFFECTS) {
 907                     TFun fun = (TFun)returnType;
 908                     Type parameterType = Types.canonical(fun.domain);
 909                     if(!javaTypeTranslator.toTypeDesc(parameterType).equals(TypeDesc.VOID))
 910                         return null;
 911                     parameterTypes.add(parameterType);
 912                     effect = Types.canonical(fun.effect);
 913                     returnType = Types.canonical(fun.range);
 914                 }
 915             }
 916             TypeDesc expectedReturnType =
 917                     javaTypeTranslator.toTypeDesc(returnType);
 918             if(!javaReferenceValidator.isAssignableFrom(expectedReturnType,
 919                     providedReturnType)) {
 920                 if(expectedReturnType.equals(TypeDesc.VOID)) {
 921                     if(providedReturnType.equals(TypeDesc.DOUBLE) || providedReturnType.equals(TypeDesc.LONG))
 922                         filter = Pop2OutputFilter.INSTANCE;
 923                     else
 924                         filter = PopOutputFilter.INSTANCE;
 925                 }
 926                 else if(expectedReturnType.equals(Constants.LIST)
 927                         && providedReturnType.equals(Constants.COLLECTION))
 928                     filter = ConvertToListFilter.INSTANCE;
 929                 else
 930                     return null;
 931             }
 932         }
 933
 934         CallJava result = new CallJava(
 935                 Types.freeVarsArray(type),
 936                 effect,
 937                 returnType,
 938                 parameterTypes.toArray(new Type[parameterTypes.size()]),
 939                 stackItems,
 940                 methodRef,
 941                 filter);
 942         //System.out.println(result.getType());
 943         return result;
 944     }
 945
 946     public void processMappingRelations(ArrayList<DMappingRelationAst> mappingRelationsAst) {
 947         for(DMappingRelationAst mappingRelation : mappingRelationsAst) {
 948             TypeAst[] parameterTypesAst = mappingRelation.parameterTypes;
 949             Type[] parameterTypes = new Type[parameterTypesAst.length];
 950             TypeTranslationContext typeTranslationContext = createTypeTranslationContext();
 951             for(int i=0;i<parameterTypes.length;++i)
 952                 parameterTypes[i] = parameterTypesAst[i].toType(typeTranslationContext, Kinds.STAR);
 953             MappingRelation mRel =
 954                     new MappingRelation(Name.create(moduleName, mappingRelation.name), parameterTypes);
 955             mRel.location = mappingRelation.location;
 956             if(module.addMappingRelation(mRel))
 957                 errorLog.log(mappingRelation.location, "Mapping relation " + mappingRelation.name +
 958                         " has already been defined.");
 959         }
 960     }
 961
 962     THashMap<String, DRuleAst> ruleAstMap = new THashMap<String, DRuleAst>();
 963
 964     public void processRules(ArrayList<DRuleAst> rulesAst) {
 965         // Find implied mapping relations
 966         for(DRuleAst ruleA : rulesAst) {
 967             ArrayList<Query> whereSection = ruleA.getSections().get("where");
 968             if(whereSection != null)
 969                 for(Query query : whereSection) {
 970                     if(!(query instanceof QPreGuard))
 971                         continue;
 972                     QPreGuard guard = (QPreGuard)query;
 973                     if(!(guard.guard instanceof EApply))
 974                         continue;
 975                     EApply apply = (EApply)guard.guard;
 976                     if(!(apply.getFunction() instanceof EVar))
 977                         continue;
 978
 979                     String name = ((EVar)apply.getFunction()).name;
 980                     if(module.getMappingRelation(name) != null)
 981                         continue;
 982
 983                     int arity = apply.getParameters().length;
 984                     Type[] parameterTypes = new Type[arity];
 985                     for(int i=0;i<arity;++i)
 986                         parameterTypes[i] = Types.metaVar(Kinds.STAR);
 987                     MappingRelation mRel =
 988                             new MappingRelation(Name.create(moduleName, name), parameterTypes);
 989                     mRel.location = query.location;
 990                     module.addMappingRelation(mRel);
 991                 }
 992             if(ruleAstMap.put(ruleA.name, ruleA) != null)
 993                 errorLog.log(ruleA.location, "Rule " + ruleA.name +
 994                         " has already been defined.");
 995         }
 996
 997         //
 998         for(String ruleName : ruleAstMap.keySet())
 999             processRule(ruleName);
1000     }
1001
1002     private TransformationRule processRule(String ruleName) {
1003         TransformationRule rule = module.getRule(ruleName);
1004         if(rule != null)
1005             return rule;
1006
1007         DRuleAst ruleAst = ruleAstMap.get(ruleName);
1008         if(ruleAst.alreadyProcessing) {
1009             errorLog.log(ruleAst.location, "Cyclic chain of rule extensions.");
1010             return null;
1011         }
1012
1013         TransformationRule[] extendsRules;
1014         int length = ruleAst.extendsNames.length;
1015         if(length == 0)
1016             extendsRules = TransformationRule.EMPTY_ARRAY;
1017         else {
1018             extendsRules = new TransformationRule[length];
1019             for(int i=0;i<length;++i) {
1020                 try {
1021                     String extendsName = ruleAst.extendsNames[i];
1022                     TransformationRule extendsRule;
1023                     if(ruleAstMap.containsKey(extendsName))
1024                         extendsRule = processRule(extendsName);
1025                     else {
1026                         extendsRule = Environments.getRule(compilationContext.environment, extendsName);
1027                         if(extendsRule == null)
1028                             errorLog.log(ruleAst.location,
1029                                     "Couldn't resolve rule name " + extendsName + ".");
1030                     }
1031                     extendsRules[i] = extendsRule;
1032                 } catch(AmbiguousNameException e) {
1033                     errorLog.log(ruleAst.location, e.getMessage());
1034                 }
1035             }
1036         }
1037
1038         final THashMap<SectionName, Query[]> sections = new THashMap<SectionName, Query[]>();
1039
1040         final TranslationContext context = createTranslationContext();
1041         if(length > 0) {
1042             THashMap<String, Variable> variables = context.getVariables();
1043             for(TransformationRule extendsRule : extendsRules) {
1044                 if(extendsRule == null)
1045                     continue;
1046                 for(Variable var : extendsRule.variables)
1047                     if(variables.put(var.getName(), var) != null) {
1048                         errorLog.log(ruleAst.location,
1049                                 "Variable " + var.getName() + " is defined in more than one base rule, which is not currently allowed.");
1050                     }
1051             }
1052         }
1053         context.pushExistentialFrame();
1054         ruleAst.getSections().forEachEntry(new TObjectObjectProcedure<String, ArrayList<Query>>() {
1055             @Override
1056             public boolean execute(String sectionNameString, ArrayList<Query> queries) {
1057                 Query[] resolvedQueries = new Query[queries.size()];
1058                 for(int i=0;i<resolvedQueries.length;++i)
1059                     resolvedQueries[i] = queries.get(i).resolve(context);
1060
1061                 SectionName sectionName = SectionName.getSectionName(sectionNameString);
1062                 if(sectionName == null)
1063                     context.getErrorLog().log(queries.get(0).location,
1064                             "Invalid section name " + sectionNameString + ".");
1065                 else
1066                     sections.put(sectionName, resolvedQueries);
1067                 return true;
1068             }
1069         });
1070
1071         Variable[] variables = context.getVariables().values().toArray(new Variable[context.getVariables().size()]);
1072
1073         rule = new TransformationRule(ruleAst.isAbstract,
1074                 Name.create(moduleName, ruleAst.name),
1075                 extendsRules,
1076                 sections, variables);
1077         rule.location = ruleAst.location;
1078         module.addRule(rule);
1079         return rule;
1080     }
1081
1082     public void addDataTypesToEnvironment() {
1083         for(StandardTypeConstructor dataType : dataTypes) {
1084             int constructorTag = 0;
1085             for(Constructor constructor : dataType.constructors) {
1086                 SCLValue value = new SCLValue(constructor.name);
1087                 SCLConstructor sclConstructor =
1088                         new SCLConstructor(
1089                                 constructor.name.name,
1090                                 constructor.javaName,
1091                                 constructor.getTypeVariables(),
1092                                 constructorTag++,
1093                                 constructor.getReturnType(),
1094                                 constructor.fieldNames == null
1095                                         ? SCLConstructor.DEFAULT_FIELD_NAMES[constructor.getParameterTypes().length]
1096                                         : constructor.fieldNames,
1097                                 constructor.recordFieldNames,
1098                                 constructor.getParameterTypes());
1099                 if(dataType.constructors.length == 1 && (
1100                         dataType.getTypeDesc() == null ||
1101                         (dataType.constructors[0].javaName != null &&
1102                         dataType.constructors[0].javaName.equals(MethodBuilderBase.getClassName(dataType.getTypeDesc())))))
1103                     sclConstructor.setOnlyConstructor(true);
1104                 value.setValue(sclConstructor);
1105                 value.setType(constructor.getType());
1106
1107                 NameExistenceChecks.checkIfValueExists(errorLog, constructor.loc,
1108                         importedEnvironment, constructor.name.name);
1109                 if(module.addValue(value)) {
1110                     errorLog.log(constructor.loc,
1111                             "Value " + constructor.name.name + " is already defined.");
1112                 }
1113             }
1114         }
1115     }
1116
1117     public void addTypeClassesToEnvironment() {
1118         for(TypeClass typeClass : module.getTypeClasses()) {
1119             for(TypeClassMethod method : typeClass.methods.values()) {
1120                 SCLValue value = method.createValue();
1121                 value.definitionLocation = method.location;
1122                 NameExistenceChecks.checkIfValueExists(errorLog, Locations.NO_LOCATION,
1123                         importedEnvironment, value.getName().name);
1124
1125                 if(module.addValue(value)) {
1126                     String name = method.getName();
1127                     long location = Locations.NO_LOCATION;
1128                     ArrayList<DValueAst> definitions = valueDefinitionsAst.getDefinition(name);
1129                     if(definitions != null && !definitions.isEmpty())
1130                         location = definitions.get(0).location;
1131                     errorLog.log(location, "Value " + name + " is already defined.");
1132                 }
1133             }
1134         }
1135     }
1136
1137     public void preprocessValueDefinitions(ArrayList<DValueTypeAst> typeAnnotationsAst) {
1138         for(String name : valueDefinitionsAst.getValueNames()) {
1139             SCLValue value = new SCLValue(Name.create(moduleName, name));
1140
1141             long location = valueDefinitionsAst.getLocation(name);
1142             NameExistenceChecks.checkIfValueExists(errorLog, location,
1143                     importedEnvironment, value.getName().name);
1144             value.definitionLocation = location;
1145             if(module.addValue(value))
1146                 errorLog.log(location, "Value " + name + " is already defined.");
1147         }
1148         for(DValueTypeAst valueTypeAst : typeAnnotationsAst)
1149             for(EVar name : valueTypeAst.names) {
1150                 SCLValue value = module.getValue(name.name);
1151                 if(value == null) {
1152                     errorLog.log(valueTypeAst.location, name.name + " is not defined.");
1153                     value = new SCLValue(Name.create(moduleName, name.name));
1154                     module.addValue(value);
1155                 }
1156                 value.definitionLocation = name.location;
1157             }
1158         for(String name : relationDefinitionsAst.getRelationNames()) {
1159             ConcreteRelation relation = new ConcreteRelation(name);
1160             module.addRelation(name, relation);
1161         }
1162     }
1163
1164     public void addValueDefinitionsToEnvironment(ArrayList<DValueTypeAst> typeAnnotationsAst) {
1165         THashMap<String, DValueTypeAst> typeMap = new THashMap<String, DValueTypeAst>();
1166         for(DValueTypeAst valueTypeAst : typeAnnotationsAst)
1167             for(EVar name : valueTypeAst.names) {
1168                 if(typeMap.containsKey(name.name))
1169                     errorLog.log(valueTypeAst.location, "Type of "+name.name+" has already been declared in this module.");
1170                 else
1171                     typeMap.put(name.name, valueTypeAst);
1172             }
1173
1174         THashMap<String, EVar> exportMap = null;
1175         if(moduleHeader != null && moduleHeader.export != null) {
1176             exportMap = new THashMap<String, EVar>();
1177             for(EVar export : moduleHeader.export)
1178                 if(exportMap.put(export.name, export) != null)
1179                     errorLog.log(export.location, "The symbol " + export.name + " is exported multiple times.");
1180         }
1181
1182         for(String name : valueDefinitionsAst.getValueNames()) {
1183             ArrayList<DValueAst> defs = valueDefinitionsAst.getDefinition(name);
1184             try {
1185                 SCLValue value = module.getValue(name);
1186                 TranslationContext context = createTranslationContext();
1187                 Expression expression = context.translateCases2(defs);
1188                 value.setExpression(expression);
1189
1190                 DValueTypeAst valueTypeAst = typeMap.remove(name);
1191                 if(valueTypeAst != null)
1192                     value.setType(Types.closure(context.toType(valueTypeAst.type)));
1193
1194                 ArrayList<DAnnotationAst> annotations = valueDefinitionsAst.getAnnotations(name);
1195                 if(annotations != null)
1196                     for(DAnnotationAst annotation : annotations) {
1197                         handleAnnotation(value, defs, annotation);
1198                     }
1199                 if(exportMap != null && exportMap.remove(name) == null)
1200                     value.addProperty(PrivateProperty.INSTANCE);
1201             } catch(RuntimeException e) {
1202                 errorLog.setExceptionPosition(defs.get(0).location);
1203                 throw e;
1204             }
1205         }
1206         if(exportMap != null)
1207             for(EVar export : exportMap.values())
1208                 errorLog.log(export.location, "The symbol " + export.name + " is not defined in the module.");
1209         for(String name : relationDefinitionsAst.getRelationNames()) {
1210             ArrayList<DRelationAst> definitions = relationDefinitionsAst.getDefinition(name);
1211             if(definitions.size() > 1) {
1212                 errorLog.log(definitions.get(1).location,
1213                         "Does not yet support definition of relations by more than one rule.");
1214                 continue;
1215             }
1216
1217             DRelationAst definition = definitions.get(0);
1218             ConcreteRelation relation = (ConcreteRelation)module.getRelation(name);
1219             relation.location = definition.location;
1220             TranslationContext context = createTranslationContext();
1221             definition.translateTo(context, relation);
1222         }
1223     }
1224
1225     private TranslationContext createTranslationContext() {
1226         return new TranslationContext(compilationContext, null);
1227     }
1228
1229     private void handleAnnotation(SCLValue value, ArrayList<DValueAst> defs, DAnnotationAst annotation) {
1230         if(annotation.id.text.equals("@macro")) {
1231             value.setMacroRule(new StandardMacroRule());
1232         }
1233         else if(annotation.id.text.equals("@inline")) {
1234             try {
1235                 int arity = defs.get(0).lhs.getFunctionDefinitionPatternArity();
1236                 int phaseMask = 0xffffffff;
1237                 if(annotation.parameters.length > 0) {
1238                     phaseMask = Integer.parseInt(((EIntegerLiteral)annotation.parameters[0]).getValue());
1239                 }
1240                 value.addProperty(new InlineProperty(arity, phaseMask));
1241             } catch(NotPatternException e) {
1242                 errorLog.log(annotation.location, "Inline annotation is invalid: this is not a function.");
1243             }
1244         }
1245         else if(annotation.id.text.equals("@private")) {
1246             if(moduleHeader != null && moduleHeader.export != null)
1247                 errorLog.log(annotation.location, "Annotation @private is not used when module header contains export property.");
1248             value.addProperty(PrivateProperty.INSTANCE);
1249         }
1250         else if(annotation.id.text.equals("@deprecated")) {
1251             String description = "";
1252             if(annotation.parameters.length > 0) {
1253                 if(annotation.parameters.length > 1)
1254                     errorLog.log(annotation.location, "Invalid number of parameters, expected one string.");
1255                 else {
1256                     String temp = AnnotationUtils.extractString(annotation.parameters[0]);
1257                     if(temp == null)
1258                         errorLog.log(annotation.location, "Invalid parameter, expected one string.");
1259                     else
1260                         description = temp;
1261                 }
1262             }
1263             value.addProperty(new DeprecatedProperty(description));
1264         }
1265         else
1266             errorLog.log(annotation.location, "Unknown annotation.");
1267     }
1268
1269     public void addSupplementedTypeAnnotationsToEnvironment() {
1270         for(SupplementedValueType valueType : supplementedTypeAnnotations) {
1271             Type type = Types.closure(valueType.type);
1272             String name = valueType.name;
1273             SCLValue value = module.getValue(name);
1274             if(value == null)
1275                 errorLog.log(valueType.position,
1276                         name + " is not defined.");
1277             else if(value.getType()==null)
1278                 value.setType(type);
1279             else
1280                 errorLog.log(valueType.position,
1281                         "Type of "+name+" has already been declared in this module.");
1282         }
1283     }
1284
1285     public void addFixityToEnvironment(ArrayList<DFixityAst> fixityAst) {
1286         for(DFixityAst fixity : fixityAst) {
1287             for(EVar symbol : fixity.symbols) {
1288                 String name = symbol.name;
1289                 SCLValue value = module.getValue(name);
1290                 if(value == null)
1291                     errorLog.log(symbol.location,
1292                             name + " is not defined.");
1293                 else
1294                     value.setPrecedence(fixity.precedence);
1295             }
1296         }
1297     }
1298
1299     public void addCoverageBranchPoints() {
1300         branchPoints = new THashMap<String, BranchPoint[]>();
1301         BranchPointInjector injector = new BranchPointInjector();
1302         for(String valueName : valueDefinitionsAst.getValueNames()) {
1303             for(DValueAst valueAst : valueDefinitionsAst.getDefinition(valueName))
1304                 valueAst.value = injector.injectBranchPoint(valueAst.value);
1305             branchPoints.put(valueName, injector.getAndClearBranchPoints());
1306         }
1307     }
1308 }