public final void parseVersion()

in compat/maven-artifact/src/main/java/org/apache/maven/artifact/versioning/DefaultArtifactVersion.java [88:165]
67 lines of code
20 McCabe index (conditional complexity)

    public final void parseVersion(String version) {
        comparable = new ComparableVersion(version);

        int index = version.indexOf('-');

        String part1;
        String part2 = null;

        if (index < 0) {
            part1 = version;
        } else {
            part1 = version.substring(0, index);
            part2 = version.substring(index + 1);
        }

        if (part2 != null) {
            if (part2.length() == 1 || !part2.startsWith("0")) {
                buildNumber = tryParseInt(part2);
                if (buildNumber == null) {
                    qualifier = part2;
                }
            } else {
                qualifier = part2;
            }
        }

        if ((!part1.contains(".")) && !part1.startsWith("0")) {
            majorVersion = tryParseInt(part1);
            if (majorVersion == null) {
                // qualifier is the whole version, including "-"
                qualifier = version;
                buildNumber = null;
            }
        } else {
            boolean fallback = false;

            String[] tok = part1.split("\\.");
            int idx = 0;
            if (idx < tok.length) {
                majorVersion = getNextIntegerToken(tok[idx++]);
                if (majorVersion == null) {
                    fallback = true;
                }
            } else {
                fallback = true;
            }
            if (idx < tok.length) {
                minorVersion = getNextIntegerToken(tok[idx++]);
                if (minorVersion == null) {
                    fallback = true;
                }
            }
            if (idx < tok.length) {
                incrementalVersion = getNextIntegerToken(tok[idx++]);
                if (incrementalVersion == null) {
                    fallback = true;
                }
            }
            if (idx < tok.length) {
                qualifier = tok[idx];
                fallback = isDigits(qualifier);
            }

            // string tokenizer won't detect these and ignores them
            if (part1.contains("..") || part1.startsWith(".") || part1.endsWith(".")) {
                fallback = true;
            }

            if (fallback) {
                // qualifier is the whole version, including "-"
                qualifier = version;
                majorVersion = null;
                minorVersion = null;
                incrementalVersion = null;
                buildNumber = null;
            }
        }
    }