public int getIndex()

in src/main/java/org/apache/commons/beanutils2/expression/DefaultResolver.java [63:91]

• 29 lines of code
• 10 McCabe index (conditional complexity)

    public int getIndex(final String expression) {
        if (expression == null || expression.isEmpty()) {
            return -1;
        }
        for (int i = 0; i < expression.length(); i++) {
            final char c = expression.charAt(i);
            if (c == NESTED || c == MAPPED_START) {
                return -1;
            }
            if (c == INDEXED_START) {
                final int end = expression.indexOf(INDEXED_END, i);
                if (end < 0) {
                    throw new IllegalArgumentException("Missing End Delimiter");
                }
                final String value = expression.substring(i + 1, end);
                if (value.isEmpty()) {
                    throw new IllegalArgumentException("No Index Value");
                }
                int index = 0;
                try {
                    index = Integer.parseInt(value, 10);
                } catch (final Exception e) {
                    throw new IllegalArgumentException("Invalid index value '" + value + "'");
                }
                return index;
            }
        }
        return -1;
    }