VersionUtil.java

package jetbrains.mps.smodel.persistence.def.v4;

/*Generated by MPS */

import jetbrains.mps.smodel.SNodeId;
import org.jetbrains.mps.openapi.model.SNode;
import jetbrains.mps.smodel.SModelVersionsInfo;

public class VersionUtil {
  private static final char VERSION_SEPARATOR_CHAR = ':';
  private static final String VERSION_SEPARATOR = "" + VERSION_SEPARATOR_CHAR;
  private static final int NO_VERSION = -100;
  private static int parseVersionedString(String rawString) {
    if (rawString.startsWith(SNodeId.Foreign.ID_PREFIX)) {
      return NO_VERSION;
    }
    int result = 0;
    int mul = 1;
    char[] chars = rawString.toCharArray();
    int lastCharNum = rawString.length() - 1;
    for (int i = lastCharNum; i >= 0; i--) {
      int digit = Character.digit(chars[i], 10);
      if (digit != -1) {
        result += digit * mul;
        mul *= 10;
      } else {
        if (chars[i] == VERSION_SEPARATOR_CHAR) {
          return result;
        }
        return NO_VERSION;
      }
    }
    return NO_VERSION;
  }
  private static String getBeforeSeparator(String s) {
    if (parseVersionedString(s) == NO_VERSION) {
      return s;
    }
    int index = s.lastIndexOf(VERSION_SEPARATOR_CHAR);
    if (index == -1) {
      return s;
    }
    return s.substring(0, index);
  }
  public static String formVersionedString(String parameter, int version) {
    if (version == -1) {
      return parameter;
    }
    return parameter + VERSION_SEPARATOR + version;
  }
  public static void fetchConceptVersion(String rawFqName, SNode node, SModelVersionsInfo versionsInfo) {
    int version = parseVersionedString(rawFqName);
    if (version != NO_VERSION) {
      versionsInfo.addConceptNameVersion(node, version);
    }
  }
  public static String getConceptFQName(String rawFqName) {
    return getBeforeSeparator(rawFqName);
  }
  public static void fetchChildNodeRoleVersion(String rawRole, SNode childNode, SModelVersionsInfo versionsInfo) {
    int version = parseVersionedString(rawRole);
    if (version != NO_VERSION) {
      versionsInfo.addRoleVersion(childNode, version);
    }
  }
  public static String getRole(String rawRole) {
    return getBeforeSeparator(rawRole);
  }
  public static String getPropertyName(String raw, SNode node, SModelVersionsInfo versionsInfo) {
    String propertyName = getBeforeSeparator(raw);
    int version = parseVersionedString(raw);
    if (version != NO_VERSION) {
      versionsInfo.addPropertyVersion(node, propertyName, version);
    }
    return propertyName;
  }
  public static String getLinkRole(String rawRole, SNode node, SModelVersionsInfo versionsInfo) {
    int version = parseVersionedString(rawRole);
    String linkRole = getBeforeSeparator(rawRole);
    if (version != NO_VERSION) {
      versionsInfo.addLinkRoleVersion(node, linkRole, version);
    }
    return linkRole;
  }
  public static String getTargetNodeId(String targetId, String role, SNode node, SModelVersionsInfo versionsInfo) {
    final String linkRole = getBeforeSeparator(targetId);
    int version = parseVersionedString(targetId);
    if (version != NO_VERSION) {
      versionsInfo.addLinkTargetIdVersion(node, role, version);
    }
    return linkRole;
  }
}