Examples with Type kalang.core.Type used on opensource projects

Example 31 with Type

use of kalang.core.Type in project kalang by kasonyang.

the class AstBuilder method getVarObjectType.

private Type getVarObjectType(VarObject p) {
    Type type = this.overrideTypes.get(p);
    if (type == null)
        type = p.getType();
    // TODO handle other object type
    if (type instanceof ClassType) {
        Integer ns = nullState.get(p);
        NullableKind nullable;
        if (ns == null) {
            nullable = ((ObjectType) type).getNullable();
        } else if (ns == NULLSTATE_MUST_NONNULL) {
            nullable = NullableKind.NONNULL;
        } else if (ns == NULLSTATE_UNKNOWN) {
            nullable = NullableKind.UNKNOWN;
        } else if (ns == NULLSTATE_MUST_NULL || ns == NULLSTATE_NULLABLE) {
            nullable = NullableKind.NULLABLE;
        } else {
            throw Exceptions.unexceptedValue(ns);
        }
        return Types.getClassType((ClassType) type, nullable);
    } else {
        return type;
    }
}

Example 32 with Type

use of kalang.core.Type in project kalang by kasonyang.

the class AstBuilder method getObjectFieldLikeExpr.

protected ExprNode getObjectFieldLikeExpr(ExprNode expr, String fieldName, @Nullable ParserRuleContext rule) {
    ExprNode ret;
    Type type = expr.getType();
    if (!(type instanceof ObjectType)) {
        AstBuilder.this.handleSyntaxError("unsupported type", rule == null ? ParserRuleContext.EMPTY : rule);
        return null;
    }
    ObjectType exprType = (ObjectType) type;
    if ((exprType instanceof ArrayType) && fieldName.equals("length")) {
        ret = new ArrayLengthExpr(expr);
    } else {
        try {
            ret = ObjectFieldExpr.create(expr, fieldName, thisClazz);
        } catch (FieldNotFoundException ex) {
            this.diagnosisReporter.report(Diagnosis.Kind.ERROR, "field not found:" + fieldName, rule);
            ret = new UnknownFieldExpr(expr, exprType.getClassNode(), fieldName);
        }
    }
    if (rule != null)
        mapAst(ret, rule);
    return ret;
}

Example 33 with Type

use of kalang.core.Type in project kalang by kasonyang.

the class AstBuilder method parseClassType.

@Nullable
protected ObjectType parseClassType(KalangParser.ClassTypeContext ctx) {
    NullableKind nullable = ctx.nullable == null ? NullableKind.NONNULL : NullableKind.NULLABLE;
    Token rawTypeToken = ctx.rawClass;
    List<String> classNameParts = new LinkedList();
    for (Token p : ctx.paths) {
        classNameParts.add(p.getText());
    }
    if (ctx.innerClass != null) {
        classNameParts.add(rawTypeToken.getText() + "$" + ctx.innerClass.getText());
    } else {
        classNameParts.add(rawTypeToken.getText());
    }
    String rawType = String.join(".", classNameParts);
    for (GenericType gt : thisClazz.getGenericTypes()) {
        if (rawType.equals(gt.getName()))
            return gt;
    }
    ObjectType clazzType = requireClassType(rawType, rawTypeToken);
    if (clazzType == null)
        return null;
    ClassNode clazzNode = clazzType.getClassNode();
    GenericType[] clzDeclaredGenericTypes = clazzNode.getGenericTypes();
    List<KalangParser.ParameterizedElementTypeContext> parameterTypes = ctx.parameterTypes;
    if (parameterTypes != null && !parameterTypes.isEmpty()) {
        Type[] typeArguments = new Type[parameterTypes.size()];
        if (parameterTypes != null && parameterTypes.size() > 0) {
            if (clzDeclaredGenericTypes.length != parameterTypes.size()) {
                diagnosisReporter.report(Diagnosis.Kind.ERROR, "wrong number of type arguments", ctx);
                return null;
            }
            for (int i = 0; i < typeArguments.length; i++) {
                typeArguments[i] = parseParameterizedElementType(parameterTypes.get(i));
                // TODO should return null?
                if (typeArguments[i] == null)
                    return null;
            }
        }
        return Types.getClassType(clazzType.getClassNode(), typeArguments, nullable);
    } else {
        return Types.getClassType(clazzType.getClassNode(), nullable);
    }
}

Example 34 with Type

use of kalang.core.Type in project kalang by kasonyang.

the class AstBuilder method visitQuestionExpr.

@Override
public AstNode visitQuestionExpr(KalangParser.QuestionExprContext ctx) {
    List<Statement> stmts = new LinkedList<>();
    ExprNode conditionExpr = (ExprNode) visit(ctx.expression(0));
    ExprNode trueExpr = (ExprNode) visit(ctx.expression(1));
    ExprNode falseExpr = (ExprNode) visit(ctx.expression(2));
    Type trueType = trueExpr.getType();
    Type falseType = falseExpr.getType();
    Type type;
    if (trueType.equals(falseType)) {
        type = trueType;
    } else {
        type = TypeUtil.getCommonType(trueType, falseType);
    }
    LocalVarNode vo = this.declareTempLocalVar(type);
    VarDeclStmt vds = new VarDeclStmt(vo);
    stmts.add(vds);
    VarExpr ve = new VarExpr(vo);
    IfStmt is = new IfStmt(conditionExpr);
    is.getTrueBody().statements.add(new ExprStmt(new AssignExpr(ve, trueExpr)));
    is.getFalseBody().statements.add(new ExprStmt(new AssignExpr(ve, falseExpr)));
    stmts.add(is);
    MultiStmtExpr mse = new MultiStmtExpr(stmts, ve);
    mapAst(ve, ctx);
    return mse;
}

Example 35 with Type

use of kalang.core.Type in project kalang by kasonyang.

the class AstBuilder method visitForEachStat.

@Override
public Object visitForEachStat(KalangParser.ForEachStatContext ctx) {
    BlockStmt block = newBlock();
    ExprNode expr = this.visitExpression(ctx.expression());
    Type exprType = expr.getType();
    List<TerminalNode> idsCtx = ctx.Identifier();
    VarExpr indexVarExpr = null;
    TerminalNode varId;
    if (idsCtx.size() == 1) {
        varId = idsCtx.get(0);
    } else {
        TerminalNode indexId = idsCtx.get(0);
        LocalVarNode indexVar = this.declareLocalVar(indexId.getText(), Types.INT_TYPE, Modifier.FINAL, ctx);
        if (indexVar == null)
            return null;
        block.statements.add(new VarDeclStmt(indexVar));
        indexVarExpr = new VarExpr(indexVar);
        varId = idsCtx.get(1);
    }
    LoopStmt loopStmt;
    if (exprType instanceof ArrayType) {
        LocalVarNode localVarNode = this.declareLocalVar(varId.getText(), ((ArrayType) exprType).getComponentType(), Modifier.FINAL, ctx);
        if (localVarNode == null)
            return null;
        VarExpr localVariable = new VarExpr(localVarNode);
        block.statements.add(new VarDeclStmt(localVarNode));
        LocalVarNode lenVar = this.declareTempLocalVar(Types.INT_TYPE);
        LocalVarNode counterVar = this.declareTempLocalVar(Types.INT_TYPE);
        // var len
        block.statements.add(new VarDeclStmt(lenVar));
        // var i
        block.statements.add(new VarDeclStmt(counterVar));
        VarExpr counterVarExpr = new VarExpr(counterVar);
        VarExpr lenVarExpr = new VarExpr(lenVar);
        block.statements.add(new ExprStmt(new AssignExpr(lenVarExpr, new ArrayLengthExpr(expr))));
        // l = array.length
        block.statements.add(new ExprStmt(new AssignExpr(counterVarExpr, new ConstExpr(0))));
        // i=0
        ExprNode cnd = new CompareExpr(counterVarExpr, lenVarExpr, CompareExpr.OP_LT);
        BlockStmt loopBody = this.newBlock();
        loopBody.statements.add(new ExprStmt(new AssignExpr(localVariable, new ElementExpr(expr, counterVarExpr))));
        if (indexVarExpr != null) {
            loopBody.statements.add(new ExprStmt(new AssignExpr(indexVarExpr, counterVarExpr)));
        }
        loopBody.statements.add(visitStat(ctx.stat()));
        popBlock();
        BlockStmt updateBs = newBlock();
        // increment counter
        updateBs.statements.add(new ExprStmt(new AssignExpr(counterVarExpr, new MathExpr(counterVarExpr, new ConstExpr(1), MathExpr.OP_ADD))));
        popBlock();
        loopStmt = new LoopStmt(cnd, null, loopBody, updateBs);
    } else {
        ObjectType iterType = Types.getIterableClassType();
        if (iterType.isAssignableFrom(exprType)) {
            ObjectInvokeExpr getIterableExpr;
            try {
                getIterableExpr = ObjectInvokeExpr.create(expr, "iterator", null);
            } catch (MethodNotFoundException | AmbiguousMethodException ex) {
                throw Exceptions.unexceptedException(ex);
            }
            LocalVarNode iterableVarNode = this.declareTempLocalVar(getIterableExpr.getType());
            block.statements.add(new VarDeclStmt(iterableVarNode));
            VarExpr iterableVarExpr = new VarExpr(iterableVarNode);
            block.statements.add(new ExprStmt(new AssignExpr(iterableVarExpr, getIterableExpr)));
            // set index = 0
            if (indexVarExpr != null) {
                block.statements.add(new ExprStmt(new AssignExpr(indexVarExpr, new ConstExpr(0))));
            }
            ObjectInvokeExpr cnd;
            try {
                cnd = ObjectInvokeExpr.create(iterableVarExpr, "hasNext", null);
            } catch (MethodNotFoundException | AmbiguousMethodException ex) {
                throw Exceptions.unexceptedException(ex);
            }
            BlockStmt loopBody = this.newBlock();
            ObjectInvokeExpr nextInvokeExpr;
            try {
                nextInvokeExpr = ObjectInvokeExpr.create(iterableVarExpr, "next", null);
            } catch (MethodNotFoundException | AmbiguousMethodException ex) {
                throw Exceptions.unexceptedException(ex);
            }
            LocalVarNode localVarNode = this.declareLocalVar(varId.getText(), nextInvokeExpr.getType(), Modifier.FINAL, ctx);
            if (localVarNode == null)
                return null;
            VarExpr localVariable = new VarExpr(localVarNode);
            loopBody.statements.add(new VarDeclStmt(localVarNode));
            loopBody.statements.add(new ExprStmt(new AssignExpr(localVariable, new CastExpr(localVariable.getType(), nextInvokeExpr))));
            loopBody.statements.add(visitStat(ctx.stat()));
            popBlock();
            BlockStmt updateBs = newBlock();
            if (indexVarExpr != null) {
                // do index++
                updateBs.statements.add(new ExprStmt(new AssignExpr(indexVarExpr, new MathExpr(indexVarExpr, new ConstExpr(1), BinaryExpr.OP_ADD))));
            }
            popBlock();
            loopStmt = new LoopStmt(cnd, null, loopBody, updateBs);
        } else {
            this.handleSyntaxError("require array type or iterable type", ctx.expression());
            loopStmt = null;
        }
    }
    popBlock();
    if (loopStmt != null)
        block.statements.add(loopStmt);
    return block;
}