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Rework all errors to provide better help text.

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This commit is contained in:
KtorZ
2022-12-23 15:53:33 +01:00
parent c47c50ffb8
commit 69f060e675
11 changed files with 1154 additions and 405 deletions
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55
crates/aiken-lang/src/parser/error.rs
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@@ -80,21 +80,12 @@ impl<T: Into<Pattern>> chumsky::Error<T> for ParseError {
#[derive(Debug, PartialEq, Eq, Diagnostic, thiserror::Error)]
pub enum ErrorKind {
#[error("Unexpected end")]
#[error("I arrived at the end of the file unexpectedly.")]
UnexpectedEnd,
#[error("{0}")]
#[diagnostic(help("{}", .0.help().unwrap_or_else(|| Box::new(""))))]
Unexpected(Pattern),
#[error("Unclosed {start}")]
Unclosed {
start: Pattern,
#[label]
before_span: Span,
before: Option<Pattern>,
},
#[error("No end branch")]
NoEndBranch,
#[error("Invalid tuple index")]
#[error("I discovered an invalid tuple index.")]
#[diagnostic()]
InvalidTupleIndex {
#[help]
@@ -104,39 +95,39 @@ pub enum ErrorKind {
#[derive(Debug, PartialEq, Eq, Hash, Diagnostic, thiserror::Error)]
pub enum Pattern {
#[error("Unexpected {0:?}")]
#[diagnostic(help("Try removing it"))]
#[error("I found an unexpected char '{0:?}'.")]
#[diagnostic(help("Try removing it!"))]
Char(char),
#[error("Unexpected {0}")]
#[diagnostic(help("Try removing it"))]
#[error("I found an unexpected token '{0}'.")]
#[diagnostic(help("Try removing it!"))]
Token(Token),
#[error("Unexpected literal")]
#[diagnostic(help("Try removing it"))]
#[error("I found an unexpected literal value.")]
#[diagnostic(help("Try removing it!"))]
Literal,
#[error("Unexpected type name")]
#[diagnostic(help("Try removing it"))]
#[error("I found an unexpected type name.")]
#[diagnostic(help("Try removing it!"))]
TypeIdent,
#[error("Unexpected indentifier")]
#[diagnostic(help("Try removing it"))]
#[error("I found an unexpected indentifier.")]
#[diagnostic(help("Try removing it!"))]
TermIdent,
#[error("Unexpected end of input")]
#[error("I found an unexpected end of input.")]
End,
#[error("Malformed list spread pattern")]
#[diagnostic(help("List spread in matches can\nuse have a discard or var"))]
#[error("I found a malformed list spread pattern.")]
#[diagnostic(help("List spread in matches can use a discard '_' or var."))]
Match,
#[error("Malformed byte literal")]
#[diagnostic(help("Bytes must be between 0-255"))]
#[error("I found an out-of-bound byte literal.")]
#[diagnostic(help("Bytes must be between 0-255."))]
Byte,
#[error("Unexpected pattern")]
#[error("I found an unexpected pattern.")]
#[diagnostic(help(
"If no label is provided then only variables\nmatching a field name are allowed"
"If no label is provided then only variables\nmatching a field name are allowed."
))]
RecordPunning,
#[error("Unexpected label")]
#[diagnostic(help("You can only use labels with curly braces"))]
#[error("I found an unexpected label.")]
#[diagnostic(help("You can only use labels surrounded by curly braces"))]
Label,
#[error("Unexpected hole")]
#[diagnostic(help("You can only use capture syntax with functions not constructors"))]
#[error("I found an unexpected discard '_'.")]
#[diagnostic(help("You can only use capture syntax with functions not constructors."))]
Discard,
}