Examples with ClassType org.yinwang.pysonar.types.ClassType used on opensource projects

Example 1 with ClassType

use of org.yinwang.pysonar.types.ClassType in project pysonar2 by yinwang0.

the class TypeInferencer method apply.

@NotNull
public Type apply(@NotNull FunType func, @Nullable Type selfType, @Nullable List<Type> positional, @Nullable Map<String, Type> kwTypes, @Nullable Type kwArg, @Nullable Type starArg, @Nullable Node call) {
    if (call instanceof Call && ((Call) call).func instanceof Attribute && ((Attribute) ((Call) call).func).attr.id.equals("append")) {
        if (selfType instanceof ListType) {
            ListType listType = (ListType) selfType;
            if (positional != null && positional.size() == 1) {
                listType.add(positional.get(0));
            } else {
                Analyzer.self.putProblem(call, "Calling append with wrong argument types");
            }
        }
    }
    if (call instanceof Call && ((Call) call).func instanceof Attribute && ((Attribute) ((Call) call).func).attr.id.equals("update")) {
        if (selfType instanceof DictType) {
            DictType dict = (DictType) selfType;
            if (positional != null && positional.size() == 1) {
                Type argType = positional.get(0);
                if (argType instanceof DictType) {
                    dict.keyType = UnionType.union(dict.keyType, ((DictType) argType).keyType);
                    dict.valueType = UnionType.union(dict.valueType, ((DictType) argType).valueType);
                }
            } else {
                Analyzer.self.putProblem(call, "Calling update with wrong argument types");
            }
        }
    }
    Analyzer.self.removeUncalled(func);
    if (func.func != null && !func.func.called) {
        Analyzer.self.nCalled++;
        func.func.called = true;
    }
    if (func.func == null) {
        // func without definition (possibly builtins)
        return func.getReturnType();
    }
    List<Type> argTypes = new ArrayList<>();
    // Add class or object as first argument if it is not static method
    if (!func.func.isStaticMethod()) {
        if (func.func.isClassMethod()) {
            if (func.cls != null) {
                argTypes.add(func.cls);
            } else if (selfType != null && selfType instanceof InstanceType) {
                argTypes.add(((InstanceType) selfType).classType);
            }
        } else {
            // usual method
            if (selfType != null) {
                argTypes.add(selfType);
            } else {
                if (func.cls != null) {
                    if (!func.func.name.id.equals("__init__")) {
                        argTypes.add(func.cls.getInstance(null, this, call));
                    } else {
                        argTypes.add(func.cls.getInstance());
                    }
                }
            }
        }
    }
    // Put in positional arguments
    if (positional != null) {
        argTypes.addAll(positional);
    }
    bindMethodAttrs(func);
    State callState = new State(func.env, State.StateType.FUNCTION);
    if (func.table.parent != null) {
        callState.setPath(func.table.parent.extendPath(func.func.name.id));
    } else {
        callState.setPath(func.func.name.id);
    }
    Type fromType = bindParams(callState, func.func, argTypes, func.defaultTypes, kwTypes, kwArg, starArg);
    Type cachedTo = func.getMapping(fromType);
    if (cachedTo != null) {
        return cachedTo;
    } else if (func.oversized()) {
        return Types.UNKNOWN;
    } else {
        func.addMapping(fromType, Types.UNKNOWN);
        Analyzer.self.callStack.push(new CallStackEntry(func, fromType));
        Type toType = visit(func.func.body, callState);
        Analyzer.self.callStack.pop();
        if (missingReturn(toType)) {
            addWarningToNode(func.func.name, "Function not always return a value");
            if (call != null) {
                addWarningToNode(call, "Call not always return a value");
            }
        }
        toType = UnionType.remove(toType, Types.CONT);
        if (!func.func.name.id.equals("__init__")) {
            func.addMapping(fromType, toType);
        } else {
            func.removeMapping(fromType);
        }
        return toType;
    }
}

Example 2 with ClassType

use of org.yinwang.pysonar.types.ClassType in project pysonar2 by yinwang0.

the class TypeInferencer method visit.

@NotNull
@Override
public Type visit(ClassDef node, State s) {
    ClassType classType = new ClassType(node.name.id, s);
    List<Type> baseTypes = new ArrayList<>();
    for (Node base : node.bases) {
        Type baseType = visit(base, s);
        if (baseType instanceof ClassType) {
            classType.addSuper(baseType);
        } else if (baseType instanceof UnionType) {
            for (Type parent : ((UnionType) baseType).types) {
                classType.addSuper(parent);
            }
        } else {
            addWarningToNode(base, base + " is not a class");
        }
        baseTypes.add(baseType);
    }
    // XXX: Not sure if we should add "bases", "name" and "dict" here. They
    // must be added _somewhere_ but I'm just not sure if it should be HERE.
    node.addSpecialAttribute(classType.table, "__bases__", new TupleType(baseTypes));
    node.addSpecialAttribute(classType.table, "__name__", Types.StrInstance);
    node.addSpecialAttribute(classType.table, "__dict__", new DictType(Types.StrInstance, Types.UNKNOWN));
    node.addSpecialAttribute(classType.table, "__module__", Types.StrInstance);
    node.addSpecialAttribute(classType.table, "__doc__", Types.StrInstance);
    // Bind ClassType to name here before resolving the body because the
    // methods need node type as self.
    bind(s, node.name, classType, CLASS);
    if (node.body != null) {
        visit(node.body, classType.table);
    }
    return Types.CONT;
}

Example 3 with ClassType

use of org.yinwang.pysonar.types.ClassType in project pysonar2 by yinwang0.

the class TypeInferencer method inferInstance.

/**
     * Helper for branch inference for 'isinstance'
     */
private void inferInstance(Node test, State s, State s1) {
    if (test instanceof Call) {
        Call testCall = (Call) test;
        if (testCall.func instanceof Name) {
            Name testFunc = (Name) testCall.func;
            if (testFunc.id.equals("isinstance")) {
                if (testCall.args.size() >= 2) {
                    Node id = testCall.args.get(0);
                    if (id instanceof Name) {
                        Node typeExp = testCall.args.get(1);
                        Type type = visit(typeExp, s);
                        if (type instanceof ClassType) {
                            type = ((ClassType) type).getInstance(null, this, test);
                        }
                        s1.insert(((Name) id).id, id, type, VARIABLE);
                    }
                }
                if (testCall.args.size() != 2) {
                    addWarningToNode(test, "Incorrect number of arguments for isinstance");
                }
            }
        }
    }
}

Example 4 with ClassType

use of org.yinwang.pysonar.types.ClassType in project pysonar2 by yinwang0.

the class Outliner method generate.

/**
     * Create an outline for a symbol table.
     *
     * @param state the file state
     * @param path  the file for which we're building the outline
     * @return a list of entries constituting the outline
     */
@NotNull
public List<Entry> generate(@NotNull State state, @NotNull String path) {
    List<Entry> result = new ArrayList<>();
    Set<Binding> entries = new TreeSet<>();
    for (Binding b : state.values()) {
        if (!b.isSynthetic() && !b.isBuiltin() && path.equals(b.getFile())) {
            entries.add(b);
        }
    }
    for (Binding nb : entries) {
        List<Entry> kids = null;
        if (nb.kind == Binding.Kind.CLASS) {
            Type realType = nb.type;
            if (realType instanceof UnionType) {
                for (Type t : ((UnionType) realType).types) {
                    if (t instanceof ClassType) {
                        realType = t;
                        break;
                    }
                }
            }
            kids = generate(realType.table, path);
        }
        Entry kid = kids != null ? new Branch() : new Leaf();
        kid.setOffset(nb.start);
        kid.setQname(nb.qname);
        kid.setKind(nb.kind);
        if (kids != null) {
            kid.setChildren(kids);
        }
        result.add(kid);
    }
    return result;
}

Example 5 with ClassType

use of org.yinwang.pysonar.types.ClassType in project pysonar2 by yinwang0.

the class TypeInferencer method visit.

@NotNull
@Override
public Type visit(FunctionDef node, State s) {
    State env = s.getForwarding();
    FunType fun = new FunType(node, env);
    fun.table.setParent(s);
    fun.table.setPath(s.extendPath(node.name.id));
    fun.setDefaultTypes(visit(node.defaults, s));
    Analyzer.self.addUncalled(fun);
    Binding.Kind funkind;
    if (node.isLamba) {
        return fun;
    } else {
        if (s.stateType == State.StateType.CLASS) {
            if ("__init__".equals(node.name.id)) {
                funkind = CONSTRUCTOR;
            } else {
                funkind = METHOD;
            }
        } else {
            funkind = FUNCTION;
        }
        Type outType = s.type;
        if (outType instanceof ClassType) {
            fun.setCls((ClassType) outType);
        }
        bind(s, node.name, fun, funkind);
        return Types.CONT;
    }
}