/*
 * Copyright 2005 Sascha Weinreuter
 *
 * Licensed 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.intellij.lang.xpath.psi.impl;

import com.intellij.lang.ASTNode;
import org.intellij.lang.xpath.context.XPathVersion;
import org.intellij.lang.xpath.psi.XPath2Type;
import org.intellij.lang.xpath.psi.XPathElementVisitor;
import org.intellij.lang.xpath.psi.XPathNumber;
import org.intellij.lang.xpath.psi.XPathType;
import org.jetbrains.annotations.NotNull;

public class XPathNumberImpl extends XPathElementImpl implements XPathNumber {
  public XPathNumberImpl(ASTNode node) {
    super(node);
  }

  @Override
  public @NotNull XPathType getType() {
    if (getXPathVersion() == XPathVersion.V1) {
      return XPathType.NUMBER;
    } else {
      if (isScientificNotation()) {
        return XPath2Type.DOUBLE;
      } else if (textContains('.')) {
        return XPath2Type.DECIMAL;
      }
      return XPath2Type.INTEGER;
    }
  }

  public boolean isScientificNotation() {
    return textContains('e') || textContains('E');
  }

  @Override
  public double getValue() {
    return Double.parseDouble(getText());
  }

  @Override
  public void accept(XPathElementVisitor visitor) {
    visitor.visitXPathNumber(this);
  }
}