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use std::io::Error as IOError;

use render::RenderError;

quick_error! {
/// Template parsing error
    #[derive(Debug, Clone)]
    pub enum TemplateError {
        UnclosedBraces(line_no: usize, col_no: usize) {
            display("closing braces `}}` expected but EOF reached at line {:?}, column {:?}",
                    line_no, col_no)
            description("closing braces `}}` expected but EOF reached")
        }
        UnexpectedClosingBraces(line_no: usize, col_no: usize) {
            display("can't close braces `}}` at line {:?}, column {:?}",
                    line_no, col_no)
            description("can't close braces `}}` at this location")
        }
        MismatchingClosedHelper(line_no: usize, col_no: usize, open: String, closed: String) {
            display("helper {:?} was opened, but {:?} is closing at line {:?}, column {:?}",
                open, closed, line_no, col_no)
            description("wrong name of closing helper")
        }
        UnclosedHelper(line_no: usize, col_no: usize, name: String) {
            display("helper {:?} was not closed on the end of file at line {:?}, column {:?}",
                    name, line_no, col_no)
            description("some helper was not closed on the end of file")
        }
        UnclosedExpression(line_no: usize, col_no: usize) {
            display("expression or comment was not closed on the end of file at line {:?}, column {:?}", line_no, col_no)
            description("some expression or comment was not closed on the end of file")
        }
    }
}

quick_error! {
    #[derive(Debug)]
    pub enum TemplateFileError {
        TemplateError(err: TemplateError) {
            from()
            cause(err)
        }
        IOError(err: IOError) {
            from()
            cause(err)
        }
    }
}

quick_error! {
    #[derive(Debug)]
    pub enum TemplateRenderError {
        TemplateError(err: TemplateError) {
            from()
            cause(err)
        }
        RenderError(err: RenderError) {
            from()
            cause(err)
        }
        IOError(err: IOError) {
            from()
            cause(err)
        }
    }
}