mod common;
mod create;
mod insert;
mod select;
use self::select::parse_select;
use super::objects::ParseTree;
use create::parse_create_table;
use insert::parse_insert;
use nom::branch::alt;
use nom::bytes::complete::tag;
use nom::combinator::{complete, opt};
use nom::error::{convert_error, ContextError, ParseError, VerboseError};
use nom::sequence::tuple;
use nom::Finish;
use nom::IResult;
use thiserror::Error;
pub struct SqlParser {}
impl SqlParser {
pub fn parse(input: &str) -> Result<ParseTree, SqlParserError> {
match SqlParser::nom_parse::<VerboseError<&str>>(input).finish() {
Ok((_, cmd)) => Ok(cmd),
Err(e) => Err(SqlParserError::ParseError(convert_error(input, e))),
}
}
fn nom_parse<'a, E: ParseError<&'a str> + ContextError<&'a str>>(
input: &'a str,
) -> IResult<&'a str, ParseTree, E> {
let (input, (result, _)) = complete(tuple((
alt((parse_create_table, parse_insert, parse_select)),
opt(tag(";")),
)))(input)?;
Ok((input, result))
}
}
#[derive(Debug, Error)]
pub enum SqlParserError {
#[error("SQL Parse Error {0}")]
ParseError(String),
#[error("Got an incomplete on {0} which shouldn't be possible")]
Incomplete(String),
}