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Refactoring

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This commit is contained in:
Andy Grove 2018-09-03 07:59:05 -06:00
parent fa2ef528b7
commit a1696ccdb8
2 changed files with 22 additions and 22 deletions
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27
src/parser.rs
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@ -1,5 +1,6 @@
use std::cmp::PartialEq;
use std::fmt::Debug;
use std::sync::{Arc, Mutex};
use super::tokenizer::*;
@ -113,11 +114,21 @@ pub trait SQLParser<TokenType, ExprType>
fn parse_infix(&mut self, chars: &mut CharSeq, left: &SQLExpr<ExprType>, precedence: usize) -> Result<Option<Box<SQLExpr<ExprType>>>, ParserError<TokenType>>;
}
//struct PrattParser<ExprType, TokenType> {
//
// ansi_parser:
//
//}
pub struct PrattParser<TokenType, ExprType> {
pub chars: CharSeq,
pub parser: Arc<Mutex<SQLParser<TokenType, ExprType>>>
}
impl<TokenType, ExprType> PrattParser<TokenType, ExprType> where TokenType: Debug + PartialEq, ExprType: Debug {
pub fn parse_expr(&mut self) -> Result<Option<Box<SQLExpr<ExprType>>>, ParserError<TokenType>> {
let mut p = self.parser.lock().unwrap();
p.parse_prefix(&mut self.chars)
}
}
//
//pub fn parse_expr<'a, TokenType, ExprType>(parser: Arc<Mutex<SQLParser<TokenType, ExprType>>>)
@ -130,12 +141,6 @@ pub trait SQLParser<TokenType, ExprType>
//}
//pub struct PrattParser<'a, TokenType, ExprType> {
// chars: Peekable<Chars<'a>>,
// tokenizer: Rc<SQLTokenizer<TokenType>>,
// parser: Rc<SQLParser<TokenType, ExprType>>
//}
//
//impl<'a, TokenType, ExprType> PrattParser<'a, TokenType, ExprType>
// where TokenType: Debug + PartialEq, ExprType: Debug {
//