org.apache.sysml.parser.python.PydmlSyntacticValidatorHelper.java Source code

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Here is the source code for org.apache.sysml.parser.python.PydmlSyntacticValidatorHelper.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.sysml.parser.python;

import java.util.ArrayList;
import java.util.List;

import org.antlr.v4.runtime.Token;
import org.apache.sysml.parser.DMLProgram;
import org.apache.sysml.parser.python.PydmlParser.FunctionCallAssignmentStatementContext;
import org.apache.sysml.parser.python.PydmlParser.ParameterizedExpressionContext;
import org.apache.sysml.parser.python.PydmlSyntacticErrorListener.CustomDmlErrorListener;

public class PydmlSyntacticValidatorHelper {
    private CustomDmlErrorListener _errorListener = null;

    public PydmlSyntacticValidatorHelper(CustomDmlErrorListener errorListener) {
        this._errorListener = errorListener;
    }

    public void notifyErrorListeners(String message, int line, int charPositionInLine) {
        this._errorListener.validationError(line, charPositionInLine, message);
    }

    public void notifyErrorListeners(String message, Token op) {
        this._errorListener.validationError(op.getLine(), op.getCharPositionInLine(), message);
    }

    public void raiseWarning(String message, Token op) {
        this._errorListener.validationWarning(op.getLine(), op.getCharPositionInLine(), message);
    }

    public String getCurrentFileName() {
        return _errorListener.peekFileName();
    }

    // Returns list of two elements <namespace, function names>, else null
    public ArrayList<String> getQualifiedNames(String fullyQualifiedFunctionName) {
        String[] fnNames = fullyQualifiedFunctionName.split("\\."); // instead of ::
        String functionName = "";
        String namespace = "";
        if (fnNames.length == 1) {
            namespace = DMLProgram.DEFAULT_NAMESPACE;
            functionName = fnNames[0].trim();
        } else if (fnNames.length == 2) {
            namespace = fnNames[0].trim();
            functionName = fnNames[1].trim();
        } else
            return null;

        ArrayList<String> retVal = new ArrayList<String>();
        retVal.add(namespace);
        retVal.add(functionName);
        return retVal;
    }

    public boolean validateBuiltinFunctions(FunctionCallAssignmentStatementContext ctx) {
        String functionName = ctx.name.getText().replaceAll(" ", "").trim();
        if (functionName.compareTo("write") == 0
                || functionName.compareTo(DMLProgram.DEFAULT_NAMESPACE + ".write") == 0) {
            return validateBuiltinWriteFunction(ctx);
        }
        return true;
    }

    private boolean validateBuiltinWriteFunction(FunctionCallAssignmentStatementContext ctx) {

        return true;
    }

    public ArrayList<org.apache.sysml.parser.ParameterExpression> getParameterExpressionList(
            List<ParameterizedExpressionContext> paramExprs) {
        ArrayList<org.apache.sysml.parser.ParameterExpression> retVal = new ArrayList<org.apache.sysml.parser.ParameterExpression>();
        for (ParameterizedExpressionContext ctx : paramExprs) {
            String paramName = null;
            if (ctx.paramName != null && ctx.paramName.getText() != null && !ctx.paramName.getText().isEmpty()) {
                paramName = ctx.paramName.getText();
            }
            org.apache.sysml.parser.ParameterExpression myArg = new org.apache.sysml.parser.ParameterExpression(
                    paramName, ctx.paramVal.info.expr);
            retVal.add(myArg);
        }
        return retVal;
    }
}