use crate::config::ConfigOption;
use crate::linter::{SyntaxRule, SyntaxRuleResult};
use sv_parser::{
unwrap_node, DataType, IntegerAtomType, IntegerVectorType, NodeEvent, RefNode, SyntaxTree,
};
#[derive(Default)]
pub struct ParameterTypeTwostate;
impl SyntaxRule for ParameterTypeTwostate {
fn check(
&mut self,
_syntax_tree: &SyntaxTree,
event: &NodeEvent,
_option: &ConfigOption,
) -> SyntaxRuleResult {
let node = match event {
NodeEvent::Enter(x) => x,
NodeEvent::Leave(_) => {
return SyntaxRuleResult::Pass;
}
};
match node {
RefNode::ParameterDeclarationParam(x) => {
let t = unwrap_node!(*x, DataType);
match t {
Some(RefNode::DataType(DataType::Atom(x))) => {
let (t, _) = &x.nodes;
match t {
IntegerAtomType::Integer(_) => SyntaxRuleResult::Fail,
_ => SyntaxRuleResult::Pass,
}
}
Some(RefNode::DataType(DataType::Vector(x))) => {
let (t, _, _) = &x.nodes;
match t {
IntegerVectorType::Logic(_) | IntegerVectorType::Reg(_) => {
SyntaxRuleResult::Fail
}
_ => SyntaxRuleResult::Pass,
}
}
_ => SyntaxRuleResult::Pass,
}
}
_ => SyntaxRuleResult::Pass,
}
}
fn name(&self) -> String {
String::from("parameter_type_twostate")
}
fn hint(&self, _option: &ConfigOption) -> String {
String::from("Declare `parameter` with an explicit 2-state type.")
}
fn reason(&self) -> String {
String::from("Design constants with Xs or Zs may cause simulation/synthesis mismatch.")
}
}