vendor sqlite3-parser (lemon-rs)

vendored/sqlite3-parser/src/lexer/sql/error.rs

@@ -0,0 +1,95 @@
+use std::error;
+use std::fmt;
+use std::io;
+
+use crate::lexer::scan::ScanError;
+use crate::parser::ParserError;
+
+/// SQL lexer and parser errors
+#[non_exhaustive]
+#[derive(Debug)]
+pub enum Error {
+    /// I/O Error
+    Io(io::Error),
+    /// Lexer error
+    UnrecognizedToken(Option<(u64, usize)>),
+    /// Missing quote or double-quote or backtick
+    UnterminatedLiteral(Option<(u64, usize)>),
+    /// Missing `]`
+    UnterminatedBracket(Option<(u64, usize)>),
+    /// Missing `*/`
+    UnterminatedBlockComment(Option<(u64, usize)>),
+    /// Invalid parameter name
+    BadVariableName(Option<(u64, usize)>),
+    /// Invalid number format
+    BadNumber(Option<(u64, usize)>),
+    /// Invalid or missing sign after `!`
+    ExpectedEqualsSign(Option<(u64, usize)>),
+    /// BLOB literals are string literals containing hexadecimal data and preceded by a single "x" or "X" character.
+    MalformedBlobLiteral(Option<(u64, usize)>),
+    /// Hexadecimal integer literals follow the C-language notation of "0x" or "0X" followed by hexadecimal digits.
+    MalformedHexInteger(Option<(u64, usize)>),
+    /// Grammar error
+    ParserError(ParserError, Option<(u64, usize)>),
+}
+
+impl fmt::Display for Error {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match *self {
+            Self::Io(ref err) => err.fmt(f),
+            Self::UnrecognizedToken(pos) => write!(f, "unrecognized token at {:?}", pos.unwrap()),
+            Self::UnterminatedLiteral(pos) => {
+                write!(f, "non-terminated literal at {:?}", pos.unwrap())
+            }
+            Self::UnterminatedBracket(pos) => {
+                write!(f, "non-terminated bracket at {:?}", pos.unwrap())
+            }
+            Self::UnterminatedBlockComment(pos) => {
+                write!(f, "non-terminated block comment at {:?}", pos.unwrap())
+            }
+            Self::BadVariableName(pos) => write!(f, "bad variable name at {:?}", pos.unwrap()),
+            Self::BadNumber(pos) => write!(f, "bad number at {:?}", pos.unwrap()),
+            Self::ExpectedEqualsSign(pos) => write!(f, "expected = sign at {:?}", pos.unwrap()),
+            Self::MalformedBlobLiteral(pos) => {
+                write!(f, "malformed blob literal at {:?}", pos.unwrap())
+            }
+            Self::MalformedHexInteger(pos) => {
+                write!(f, "malformed hex integer at {:?}", pos.unwrap())
+            }
+            Self::ParserError(ref msg, Some(pos)) => write!(f, "{msg} at {pos:?}"),
+            Self::ParserError(ref msg, _) => write!(f, "{msg}"),
+        }
+    }
+}
+
+impl error::Error for Error {}
+
+impl From<io::Error> for Error {
+    fn from(err: io::Error) -> Self {
+        Self::Io(err)
+    }
+}
+
+impl From<ParserError> for Error {
+    fn from(err: ParserError) -> Self {
+        Self::ParserError(err, None)
+    }
+}
+
+impl ScanError for Error {
+    fn position(&mut self, line: u64, column: usize) {
+        match *self {
+            Self::Io(_) => {}
+            Self::UnrecognizedToken(ref mut pos) => *pos = Some((line, column)),
+            Self::UnterminatedLiteral(ref mut pos) => *pos = Some((line, column)),
+            Self::UnterminatedBracket(ref mut pos) => *pos = Some((line, column)),
+            Self::UnterminatedBlockComment(ref mut pos) => *pos = Some((line, column)),
+            Self::BadVariableName(ref mut pos) => *pos = Some((line, column)),
+            Self::BadNumber(ref mut pos) => *pos = Some((line, column)),
+            Self::ExpectedEqualsSign(ref mut pos) => *pos = Some((line, column)),
+            Self::MalformedBlobLiteral(ref mut pos) => *pos = Some((line, column)),
+            Self::MalformedHexInteger(ref mut pos) => *pos = Some((line, column)),
+            Self::ParserError(_, ref mut pos) => *pos = Some((line, column)),
+        }
+    }
+}