*
   * <p>Unlike {@link Float#parseFloat(String)}, this method returns {@code null} instead of
   * throwing an exception if parsing fails. Valid inputs are exactly those accepted by {@link
   * Float#valueOf(String)}, except that leading and trailing whitespace is not permitted.
   *
   * <p>This implementation is likely to be faster than {@code Float.parseFloat} if many failures
   * are expected.
   *

     * @return The setting value as a float.
     */
    public float getAsFloat(final String key, final float defaultValue) {
        return getAs(key, defaultValue, Float::parseFloat);
    }

    /**
     * Retrieves a setting value as a boolean.
     * @param key The key of the setting.
     * @param defaultValue The default value if the setting is not found.

        }
        if (value instanceof Double) {
            return ((Double) value).floatValue();
        }
        if (value != null) {
            try {
                return Float.parseFloat(value.toString());
            } catch (final NumberFormatException e) {
                logger.warn("Failed to parse boost value: expression={}, value={}", boostExpression, value, e);
                return 0.0f;

            return boost.toString();
        }
        return null;
    }

    public void setBoostValue(final String value) {
        if (value != null) {
            try {
                boost = Float.parseFloat(value);
            } catch (final Exception e) {
                if (logger.isDebugEnabled()) {
                    logger.debug("Invalid boost value, keeping current: value={}, error={}", value, e.getMessage());

        final long docFreq = Long.parseLong(source.get(FieldNames.DOC_FREQ).toString());
        final long queryFreq = Long.parseLong(source.get(FieldNames.QUERY_FREQ).toString());
        final float userBoost = Float.parseFloat(source.get(FieldNames.USER_BOOST).toString());
        final List<String> tags = SuggestUtil.getAsList(source.get(FieldNames.TAGS));
        final List<String> roles = SuggestUtil.getAsList(source.get(FieldNames.ROLES));

            return boost.toString();
        }
        return null;
    }

    public void setBoostValue(final String value) {
        if (value != null) {
            try {
                boost = Float.parseFloat(value);
            } catch (final Exception e) {
                if (logger.isDebugEnabled()) {
                    logger.debug("Invalid boost value, keeping current: value={}, error={}", value, e.getMessage());

        if (value == null) {
            return defaultValue;
        }
        if (value instanceof Number numValue) {
            return numValue.floatValue();
        }
        return Float.parseFloat(value.toString());
    }

    /**
     * Gets a Double value from the map.
     *
     * @param map The source map
     * @param key The key to look up

        assertEquals(Long.parseLong(expected), DocumentUtil.getValue(doc, "key1", Long.class).longValue());
        assertEquals(Float.parseFloat(expected), DocumentUtil.getValue(doc, "key1", Float.class).floatValue());
        assertEquals(Double.parseDouble(expected), DocumentUtil.getValue(doc, "key1", Double.class).doubleValue());

     */
    protected float toFloat(final Object value) {
        if (value instanceof final Float f) {
            return f;
        }
        if (value instanceof final String s) {
            return Float.parseFloat(s);
        }
        return 0.0f;
    }

    /**
     * Wrapper class for SearchRequestParams that allows overriding specific parameters.

	value, err := strconv.ParseUint(str, 0, 64)
	if err != nil {
		p.errorf("%s", err)
	}
	return value
}

func (p *Parser) atof(str string) float64 {
	value, err := strconv.ParseFloat(str, 64)
	if err != nil {
		p.errorf("%s", err)
	}
	return value
}

// EOF represents the end of input.
var EOF = lex.Make(scanner.EOF, "EOF")

func (p *Parser) next() lex.Token {