Return errors, not panic, when integers fail to parse in AUTO_INCREMENT and TOP (#1305)

Author: Emil Ejbyfeldt

src/parser/mod.rs

@@ -20,7 +20,10 @@ use alloc::{
     vec,
     vec::Vec,
 };
-use core::fmt;
+use core::{
+    fmt::{self, Display},
+    str::FromStr,
+};
 
 use log::debug;
 
@@ -3260,6 +3263,18 @@ impl<'a> Parser<'a> {
         }
     }
 
+    fn parse<T: FromStr>(s: String, loc: Location) -> Result<T, ParserError>
+    where
+        <T as FromStr>::Err: Display,
+    {
+        s.parse::<T>().map_err(|e| {
+            ParserError::ParserError(format!(
+                "Could not parse '{s}' as {}: {e}{loc}",
+                core::any::type_name::<T>()
+            ))
+        })
+    }
+
     /// Parse a comma-separated list of 1+ SelectItem
     pub fn parse_projection(&mut self) -> Result<Vec<SelectItem>, ParserError> {
         // BigQuery and Snowflake allow trailing commas, but only in project lists
@@ -5281,7 +5296,7 @@ impl<'a> Parser<'a> {
             let _ = self.consume_token(&Token::Eq);
             let next_token = self.next_token();
             match next_token.token {
-                Token::Number(s, _) => Some(s.parse::<u32>().expect("literal int")),
+                Token::Number(s, _) => Some(Self::parse::<u32>(s, next_token.location)?),
                 _ => self.expected("literal int", next_token)?,
             }
         } else {
@@ -6725,10 +6740,7 @@ impl<'a> Parser<'a> {
             // The call to n.parse() returns a bigdecimal when the
             // bigdecimal feature is enabled, and is otherwise a no-op
             // (i.e., it returns the input string).
-            Token::Number(ref n, l) => match n.parse() {
-                Ok(n) => Ok(Value::Number(n, l)),
-                Err(e) => parser_err!(format!("Could not parse '{n}' as number: {e}"), location),
-            },
+            Token::Number(n, l) => Ok(Value::Number(Self::parse(n, location)?, l)),
             Token::SingleQuotedString(ref s) => Ok(Value::SingleQuotedString(s.to_string())),
             Token::DoubleQuotedString(ref s) => Ok(Value::DoubleQuotedString(s.to_string())),
             Token::TripleSingleQuotedString(ref s) => {
@@ -6820,9 +6832,7 @@ impl<'a> Parser<'a> {
     pub fn parse_literal_uint(&mut self) -> Result<u64, ParserError> {
         let next_token = self.next_token();
         match next_token.token {
-            Token::Number(s, _) => s.parse::<u64>().map_err(|e| {
-                ParserError::ParserError(format!("Could not parse '{s}' as u64: {e}"))
-            }),
+            Token::Number(s, _) => Self::parse::<u64>(s, next_token.location),
             _ => self.expected("literal int", next_token),
         }
     }
@@ -9273,20 +9283,20 @@ impl<'a> Parser<'a> {
                                 return self.expected("literal number", next_token);
                             };
                             self.expect_token(&Token::RBrace)?;
-                            RepetitionQuantifier::AtMost(n.parse().expect("literal int"))
+                            RepetitionQuantifier::AtMost(Self::parse(n, token.location)?)
                         }
                         Token::Number(n, _) if self.consume_token(&Token::Comma) => {
                             let next_token = self.next_token();
                             match next_token.token {
                                 Token::Number(m, _) => {
                                     self.expect_token(&Token::RBrace)?;
                                     RepetitionQuantifier::Range(
-                                        n.parse().expect("literal int"),
-                                        m.parse().expect("literal int"),
+                                        Self::parse(n, token.location)?,
+                                        Self::parse(m, token.location)?,
                                     )
                                 }
                                 Token::RBrace => {
-                                    RepetitionQuantifier::AtLeast(n.parse().expect("literal int"))
+                                    RepetitionQuantifier::AtLeast(Self::parse(n, token.location)?)
                                 }
                                 _ => {
                                     return self.expected("} or upper bound", next_token);
@@ -9295,7 +9305,7 @@ impl<'a> Parser<'a> {
                         }
                         Token::Number(n, _) => {
                             self.expect_token(&Token::RBrace)?;
-                            RepetitionQuantifier::Exactly(n.parse().expect("literal int"))
+                            RepetitionQuantifier::Exactly(Self::parse(n, token.location)?)
                         }
                         _ => return self.expected("quantifier range", token),
                     }
@@ -10329,7 +10339,7 @@ impl<'a> Parser<'a> {
         } else {
             let next_token = self.next_token();
             let quantity = match next_token.token {
-                Token::Number(s, _) => s.parse::<u64>().expect("literal int"),
+                Token::Number(s, _) => Self::parse::<u64>(s, next_token.location)?,
                 _ => self.expected("literal int", next_token)?,
             };
             Some(TopQuantity::Constant(quantity))

tests/sqlparser_common.rs

@@ -10006,3 +10006,18 @@ fn parse_select_wildcard_with_except() {
         "sql parser error: Expected identifier, found: )"
     );
 }
+
+#[test]
+fn parse_auto_increment_too_large() {
+    let dialect = GenericDialect {};
+    let u64_max = u64::MAX;
+    let sql =
+        format!("CREATE TABLE foo (bar INT NOT NULL AUTO_INCREMENT) AUTO_INCREMENT=1{u64_max}");
+
+    let res = Parser::new(&dialect)
+        .try_with_sql(&sql)
+        .expect("tokenize to work")
+        .parse_statements();
+
+    assert!(res.is_err(), "{res:?}");
+}