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Allow chained equals.

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This commit is contained in:
Adam Wick
2024-04-15 16:31:44 -07:00
parent 3d8e0804bc
commit 763a895285
13 changed files with 114 additions and 99 deletions
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37
src/syntax/validate.rs
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@@ -156,25 +156,6 @@ impl Statement {
let mut warnings = vec![];
match self {
Statement::Binding(loc, var, val) => {
// we're going to make the decision that a variable is not bound in the right
// hand side of its binding, which makes a lot of things easier. So we'll just
// immediately check the expression, and go from there.
let (mut exp_errors, mut exp_warnings) = val.validate(bound_variables);
errors.append(&mut exp_errors);
warnings.append(&mut exp_warnings);
if let Some(original_binding_site) = bound_variables.get(&var.name) {
warnings.push(Warning::ShadowedVariable(
original_binding_site.clone(),
loc.clone(),
var.to_string(),
));
} else {
bound_variables.insert(var.to_string(), loc.clone());
}
}
Statement::Print(_, var) if bound_variables.contains_key(&var.name) => {}
Statement::Print(loc, var) => {
errors.push(Error::UnboundVariable(loc.clone(), var.to_string()))
@@ -260,6 +241,24 @@ impl Expression {
warnings.append(&mut local_warnings);
}
(errors, warnings)
}
Expression::Binding(loc, var, val) => {
// we're going to make the decision that a variable is not bound in the right
// hand side of its binding, which makes a lot of things easier. So we'll just
// immediately check the expression, and go from there.
let (errors, mut warnings) = val.validate(variable_map);
if let Some(original_binding_site) = variable_map.get(&var.name) {
warnings.push(Warning::ShadowedVariable(
original_binding_site.clone(),
loc.clone(),
var.to_string(),
));
} else {
variable_map.insert(var.to_string(), loc.clone());
}
(errors, warnings)
}
}