Examples with Resource org.beetl.core.Resource used on opensource projects

Example 6 with Resource

use of org.beetl.core.Resource in project beetl2.0 by javamonkey.

the class FunctionExpression method evaluate.

public Object evaluate(Context ctx) {
    Function fn = ctx.gt.getFunction(name);
    if (fn == null) {
        // 检查html实现
        Resource resource = getResource(ctx.gt, name);
        if (resource.getResourceLoader().exist(resource.getId())) {
            fn = new FileFunctionWrapper(resource.getId());
        } else {
            BeetlException ex = new BeetlException(BeetlException.FUNCTION_NOT_FOUND);
            ex.pushToken(token);
            throw ex;
        }
    }
    Object[] paras = new Object[exps.length];
    for (int i = 0; i < paras.length; i++) {
        paras[i] = exps[i].evaluate(ctx);
    }
    Object value = null;
    try {
        value = fn.call(paras, ctx);
    } catch (BeetlException ex) {
        ex.pushToken(token);
        throw ex;
    } catch (RuntimeException ex) {
        BeetlException be = new BeetlException(BeetlException.NATIVE_CALL_EXCEPTION, "调用方法出错 " + name, ex);
        be.pushToken(this.token);
        throw be;
    }
    Object ret = null;
    if (vas == null) {
        ret = value;
    } else {
        for (VarAttribute attr : vas) {
            try {
                value = attr.evaluate(ctx, value);
            } catch (BeetlException ex) {
                ex.pushToken(attr.token);
                throw ex;
            } catch (RuntimeException ex) {
                BeetlException be = new BeetlException(BeetlException.ATTRIBUTE_INVALID, "属性访问出错", ex);
                be.pushToken(attr.token);
                throw be;
            }
            if (value == null) {
                if (hasSafe) {
                    return safeExp == null ? null : safeExp.evaluate(ctx);
                } else {
                    BeetlException be = new BeetlException(BeetlException.ERROR, "空指针 ");
                    be.pushToken(attr.token);
                    throw be;
                }
            }
        }
        ret = value;
    }
    if (ret == null && hasSafe) {
        return safeExp == null ? null : safeExp.evaluate(ctx);
    } else {
        return ret;
    }
}