use crate::config::ConfigOption;
use crate::linter::{SyntaxRule, SyntaxRuleResult};
use sv_parser::{NodeEvent, RefNode, SyntaxTree, WhiteSpace};
#[derive(Default)]
pub struct TabCharacter;
impl SyntaxRule for TabCharacter {
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::WhiteSpace(WhiteSpace::Space(x)) => {
let text = syntax_tree.get_str(x).unwrap();
match text.find('\t') {
Some(x) => SyntaxRuleResult::FailAt(x, 1),
None => SyntaxRuleResult::Pass,
}
}
RefNode::WhiteSpace(WhiteSpace::Newline(x)) => {
let text = syntax_tree.get_str(x).unwrap();
match text.find('\t') {
Some(x) => SyntaxRuleResult::FailAt(x, 1),
None => SyntaxRuleResult::Pass,
}
}
_ => SyntaxRuleResult::Pass,
}
}
fn name(&self) -> String {
String::from("tab_character")
}
fn hint(&self, _option: &ConfigOption) -> String {
String::from("Replace tab characters with spaces.")
}
fn reason(&self) -> String {
String::from("Tabs may cause misalignment depending on editor setup.")
}
}