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allow dynamic calls

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This commit is contained in:
Antoni Piasecki
2025-12-21 15:42:00 +01:00
parent 0863094635
commit a259d204be
3 changed files with 50 additions and 44 deletions
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37
src/analyzer.rs
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@@ -120,20 +120,31 @@ impl Analyzer {
paren,
args,
} => {
let callee = match callee.as_ref() {
Expr::Variable(name) => name.lexeme.clone(),
_ => return error!(&paren.loc, "tried to call a non-constant expression"),
};
if let Some(arity) = self.functions.get(&callee) {
if *arity >= 0 && *arity != args.len() as i32 {
return error!(
&paren.loc,
format!("expected {} arguments, got {}", arity, args.len())
);
if let Expr::Variable(callee_name) = *callee.clone() {
if callee_name.lexeme.starts_with("_builtin_")
|| self.functions.contains_key(&callee_name.lexeme)
{
// its a function (defined/builtin/extern)
if let Some(arity) = self.functions.get(&callee_name.lexeme) {
if *arity >= 0 && *arity != args.len() as i32 {
return error!(
&paren.loc,
format!("expected {} arguments, got {}", arity, args.len())
);
}
} else if !callee_name.lexeme.starts_with("_builtin_") {
return error!(
&paren.loc,
format!("undefined function: {}", callee_name.lexeme)
);
}
} else {
// its a variable containing function address
self.analyze_expr(callee)?;
}
} else if !callee.starts_with("_builtin_") {
return error!(&paren.loc, format!("undefined function: {}", callee));
} else {
// its an expression that evalutes to function address
self.analyze_expr(callee)?;
}
for arg in args {