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better match pattern for catching more error situations

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This commit is contained in:
gluax 2022-04-12 11:52:12 -07:00
parent 9f79ca7169
commit 168080942b
3 changed files with 17 additions and 10 deletions
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25
compiler/parser/src/parser/file.rs
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@ -70,19 +70,26 @@ impl ParserContext<'_> {
let const_ = self.eat(Token::Const);
if const_.is_some() {
dbg!(&const_.as_ref().unwrap().span);
self.emit_err(ParserError::const_parameter_or_input(&const_.as_ref().unwrap().span));
}
match (public, constant) {
(None, Some(_)) => Ok(ParamMode::Constant),
(None, None) if const_.is_some() => Ok(ParamMode::Constant),
(None, None) => Ok(ParamMode::Private),
(Some(p), None) if const_.is_some() => {
Err(ParserError::inputs_multiple_variable_types_specified(&(p.span + const_.unwrap().span)).into())
match (public, constant, const_) {
(None, Some(_), None) => Ok(ParamMode::Constant),
(None, None, Some(_)) => Ok(ParamMode::Constant),
(None, None, None) => Ok(ParamMode::Private),
(Some(_), None, None) => Ok(ParamMode::Public),
(Some(p), None, Some(c)) => {
Err(ParserError::inputs_multiple_variable_types_specified(&(p.span + c.span)).into())
}
(None, Some(c), Some(co)) => {
Err(ParserError::inputs_multiple_variable_types_specified(&(c.span + co.span)).into())
}
(Some(p), Some(c), None) => {
Err(ParserError::inputs_multiple_variable_types_specified(&(p.span + c.span)).into())
}
(Some(p), Some(c), Some(co)) => {
Err(ParserError::inputs_multiple_variable_types_specified(&(p.span + c.span + co.span)).into())
}
(Some(_), None) => Ok(ParamMode::Public),
(Some(p), Some(c)) => Err(ParserError::inputs_multiple_variable_types_specified(&(p.span + c.span)).into()),
}
}

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docs/grammar/README.md
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2
docs/grammar/abnf-grammar.txt
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@ -318,7 +318,7 @@ function-declaration = %s"function" identifier
function-parameters = function-parameter *( "," function-parameter ) [ "," ]
function-parameter = [ %s"public" / %s"constant" ] identifier ":" type
function-parameter = [ %s"public" / %s"constant" / %s"const" ] identifier ":" type
declaration = function-declaration