use crate::config::ConfigOption;
use crate::linter::{SyntaxRule, SyntaxRuleResult};
use sv_parser::{unwrap_node, NodeEvent, PortDirection, RefNode, SyntaxTree};
#[derive(Default)]
pub struct InputWithVar;
impl SyntaxRule for InputWithVar {
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::AnsiPortDeclaration(x) => {
let dir = unwrap_node!(*x, PortDirection);
let is_input = match dir {
Some(RefNode::PortDirection(PortDirection::Input(_))) => true,
_ => false,
};
let var = unwrap_node!(*x, VarDataTypeVar);
if is_input && var.is_none() {
SyntaxRuleResult::Fail
} else {
SyntaxRuleResult::Pass
}
}
_ => SyntaxRuleResult::Pass,
}
}
fn name(&self) -> String {
String::from("input_with_var")
}
fn hint(&self, _option: &ConfigOption) -> String {
String::from("Specify `var` datakind on `input` ports.")
}
fn reason(&self) -> String {
String::from("Default datakind of input port is a tri-state net.")
}
}