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Improve error messages to lists.

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This commit is contained in:
Stephen Chung
2020-03-16 23:51:32 +08:00
parent d4311bddb0
commit abe5365bfd
5 changed files with 433 additions and 453 deletions
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5
src/error.rs
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@@ -58,6 +58,8 @@ pub enum ParseErrorType {
/// An open `[` is missing the corresponding closing `]`.
#[cfg(not(feature = "no_index"))]
MissingRightBracket(String),
/// A list of expressions is missing the separating ','.
MissingComma(String),
/// An expression in function call arguments `()` has syntax error.
MalformedCallExpr(String),
/// An expression in indexing brackets `[]` has syntax error.
@@ -116,6 +118,7 @@ impl ParseError {
ParseErrorType::MissingRightBrace(_) => "Expecting '}'",
#[cfg(not(feature = "no_index"))]
ParseErrorType::MissingRightBracket(_) => "Expecting ']'",
ParseErrorType::MissingComma(_) => "Expecting ','",
ParseErrorType::MalformedCallExpr(_) => "Invalid expression in function call arguments",
#[cfg(not(feature = "no_index"))]
ParseErrorType::MalformedIndexExpr(_) => "Invalid index in indexing expression",
@@ -165,6 +168,8 @@ impl fmt::Display for ParseError {
#[cfg(not(feature = "no_index"))]
ParseErrorType::MissingRightBracket(ref s) => write!(f, "{} for {}", self.desc(), s)?,
ParseErrorType::MissingComma(ref s) => write!(f, "{} for {}", self.desc(), s)?,
ParseErrorType::AssignmentToConstant(ref s) if s.is_empty() => {
write!(f, "{}", self.desc())?
}