Method skipELExpression

java/org/apache/jasper/compiler/JspReader.java:491–528

Parse ELExpressionBody that is a body of ${} or #{} expression. Initial reader position is expected to be just after '${' or '#{' characters. In case of success, this method returns Mark for the last character before the terminating '}' and reader is positioned just after the '}' ch

()

     * @return Mark for the last character of EL expression or <code>null</code>
     */
    Mark skipELExpression() {
        // ELExpressionBody.
        // Starts with "#{" or "${". Ends with "}".
        // May contain quoted "{", "}", '{', or '}' and nested "{...}"
        Mark last = mark();
        boolean singleQuoted = false;
        boolean doubleQuoted = false;
        int nesting = 0;
        int currentChar;
        do {
            currentChar = nextChar(last);
            while (currentChar == '\\' && (singleQuoted || doubleQuoted)) {
                // skip character following '\' within quotes
                // No need to update 'last', as neither of these characters
                // can be the closing '}'.
                nextChar();
                currentChar = nextChar();
            }
            if (currentChar == -1) {
                return null;
            }
            if (currentChar == '"' && !singleQuoted) {
                doubleQuoted = !doubleQuoted;
            } else if (currentChar == '\'' && !doubleQuoted) {
                singleQuoted = !singleQuoted;
            } else if (currentChar == '{' && !doubleQuoted && !singleQuoted) {
                nesting++;
            } else if (currentChar == '}' && !doubleQuoted && !singleQuoted) {
                // Note: This also matches the terminating '}' at which point
                // nesting will be set to -1 - hence the test for
                // while (currentChar != '}' || nesting > -1 ||...) below
                // to continue the loop until the final '}' is detected
                nesting--;
            }
        } while (currentChar != '}' || singleQuoted || doubleQuoted || nesting > -1);

        return last;
    }

    final boolean isSpace() {
        // Note: If this logic changes, also update Node.TemplateText.rtrim()