private void readPackages()

in src/main/java/org/apache/commons/jexl3/internal/introspection/PermissionsParser.java [293:351]

• 52 lines of code
• 12 McCabe index (conditional complexity)

    private void readPackages() {
        final StringBuilder temp = new StringBuilder();
        Permissions.NoJexlPackage njpackage = null;
        int i = 0;
        int j = -1;
        String pname = null;
        while (i < size) {
            final char c = src.charAt(i);
            // if no parsing progress can be made, we are in error
            if (j >= i) {
                throw new IllegalStateException(unexpected(c, i));
            }
            j = i;
            // get rid of space
            if (Character.isWhitespace(c)) {
                i = readSpaces(i + 1);
                continue;
            }
            // eol comment
            if (c == '#') {
                i = readEol(i + 1);
                continue;
            }
            // read the package qualified name
            if (pname == null) {
                final int next = readIdentifier(temp, i, true, true);
                if (i != next) {
                    pname = temp.toString();
                    temp.setLength(0);
                    i = next;
                    // consume it if it is a wildcard declaration
                    if (pname.endsWith(".*")) {
                        wildcards.add(pname);
                        pname = null;
                    }
                    continue;
                }
            }
            // package mode
            if (njpackage == null) {
                if (c == '{') {
                    njpackage = packages.compute(pname,
                        (n, p) -> new Permissions.NoJexlPackage(p == null? null : p.nojexl)
                    );
                    i += 1;
                }
            } else if (c == '}') {
                // empty means whole package
                if (njpackage.isEmpty()) {
                    packages.put(pname, Permissions.NOJEXL_PACKAGE);
                }
                njpackage = null; // can restart anew
                pname = null;
                i += 1;
            } else {
                i = readClass(njpackage, true,null, null, i);
            }
        }
    }