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Refactor add statement analysis to allow strings

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This commit is contained in:
Jeff 2024-08-08 13:21:27 -04:00
parent a639641ed2
commit 8dd62e623e
1 changed files with 63 additions and 41 deletions
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104
dust-lang/src/analyzer.rs
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@ -71,22 +71,23 @@ impl<'a> Analyzer<'a> {
fn analyze_node(&self, node: &Node) -> Result<(), AnalyzerError> {
match &node.statement {
Statement::Add(left, right) => {
if let Some(Type::Integer) | Some(Type::Float) =
left.statement.expected_type(self.variables)
{
} else {
return Err(AnalyzerError::ExpectedIntegerOrFloat {
actual: left.as_ref().clone(),
});
}
let left_type = left.statement.expected_type(self.variables);
let right_type = right.statement.expected_type(self.variables);
if let Some(Type::Integer) | Some(Type::Float) =
right.statement.expected_type(self.variables)
{
} else {
return Err(AnalyzerError::ExpectedIntegerOrFloat {
actual: right.as_ref().clone(),
});
match (left_type, right_type) {
(Some(Type::Integer), Some(Type::Integer)) => {}
(Some(Type::Float), Some(Type::Float)) => {}
(Some(Type::String), Some(Type::String)) => {}
(Some(Type::Integer), _) | (Some(Type::Float), _) | (Some(Type::String), _) => {
return Err(AnalyzerError::ExpectedIntegerFloatOrString {
actual: right.as_ref().clone(),
});
}
_ => {
return Err(AnalyzerError::ExpectedIntegerFloatOrString {
actual: left.as_ref().clone(),
});
}
}
self.analyze_node(left)?;
@ -183,6 +184,7 @@ pub enum AnalyzerError {
ExpectedIdentifier { actual: Node },
ExpectedIdentifierOrValue { actual: Node },
ExpectedIntegerOrFloat { actual: Node },
ExpectedIntegerFloatOrString { actual: Node },
UnexpectedIdentifier { identifier: Node },
}
@ -192,6 +194,52 @@ mod tests {
use super::*;
#[test]
fn add_expects_same_types() {
let abstract_tree = AbstractSyntaxTree {
nodes: [Node::new(
Statement::Add(
Box::new(Node::new(Statement::Constant(Value::integer(1)), (0, 1))),
Box::new(Node::new(Statement::Constant(Value::float(1.0)), (1, 2))),
),
(0, 2),
)]
.into(),
};
let variables = HashMap::new();
let analyzer = Analyzer::new(&abstract_tree, &variables);
assert_eq!(
analyzer.analyze(),
Err(AnalyzerError::ExpectedIntegerFloatOrString {
actual: Node::new(Statement::Constant(Value::float(1.0)), (1, 2))
})
)
}
#[test]
fn add_expects_integer_float_or_string() {
let abstract_tree = AbstractSyntaxTree {
nodes: [Node::new(
Statement::Add(
Box::new(Node::new(Statement::Constant(Value::boolean(true)), (0, 1))),
Box::new(Node::new(Statement::Constant(Value::integer(1)), (1, 2))),
),
(0, 2),
)]
.into(),
};
let variables = HashMap::new();
let analyzer = Analyzer::new(&abstract_tree, &variables);
assert_eq!(
analyzer.analyze(),
Err(AnalyzerError::ExpectedIntegerFloatOrString {
actual: Node::new(Statement::Constant(Value::boolean(true)), (0, 1))
})
)
}
#[test]
fn is_even_expects_number() {
let abstract_tree = AbstractSyntaxTree {
@ -277,32 +325,6 @@ mod tests {
)
}
#[test]
fn add_expect_integer_or_float() {
let abstract_tree = AbstractSyntaxTree {
nodes: [Node::new(
Statement::Add(
Box::new(Node::new(Statement::Constant(Value::integer(1)), (0, 1))),
Box::new(Node::new(
Statement::Constant(Value::boolean(false)),
(1, 2),
)),
),
(0, 2),
)]
.into(),
};
let variables = HashMap::new();
let analyzer = Analyzer::new(&abstract_tree, &variables);
assert_eq!(
analyzer.analyze(),
Err(AnalyzerError::ExpectedIntegerOrFloat {
actual: Node::new(Statement::Constant(Value::boolean(false)), (1, 2))
})
)
}
#[test]
fn assignment_expect_identifier() {
let abstract_tree = AbstractSyntaxTree {