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use crate::types;
use crate::NODE_HANDLERS;
use crate::TOKENS_HANLDERS;
use std::collections::HashSet;
use std::fs;
use std::str;
use std::sync::Mutex;
pub struct File<'a> {
filepath: String,
offenses: types::OffenseList,
active_cops: &'a HashSet<&'a str>,
pub parser_result: types::ParserResult,
}
impl<'a> File<'a> {
pub fn inline(source: String, active_cops: &'a HashSet<&str>) -> File<'a> {
let options = types::ParserOptions {
..Default::default()
};
let parser = types::Parser::new(source, options);
let parser_result = parser.do_parse();
File {
filepath: "".to_string(),
parser_result: parser_result,
active_cops: active_cops,
offenses: Mutex::new(vec![]),
}
}
pub fn new(filepath: String, active_cops: &'a HashSet<&str>) -> File<'a> {
let options = types::ParserOptions {
..Default::default()
};
let source = fs::read_to_string(&filepath).unwrap();
let parser = types::Parser::new(source, options);
let parser_result = parser.do_parse();
File {
filepath: filepath,
parser_result: parser_result,
active_cops: active_cops,
offenses: Mutex::new(vec![]),
}
}
pub fn is_enabled(&self, cop_name: &'static str) -> bool {
self.active_cops.contains(cop_name)
}
pub fn process(&self) {
let ast = self.parser_result.ast.as_ref();
if let Some(ast) = ast {
self.iterate_nodes(&*ast);
for (cop_name, handler) in TOKENS_HANLDERS.lock().unwrap().iter() {
if self.is_enabled(cop_name) {
handler(&self.parser_result.tokens, self);
}
}
}
}
fn iterate_nodes(&self, node: &types::Node) {
let call_handlers = |node_type| {
if let Some(handlers) = NODE_HANDLERS.lock().unwrap().get(node_type) {
for (cop_name, handler) in handlers {
if self.is_enabled(cop_name) {
handler(node, self);
}
}
}
};
call_handlers(node.str_type());
match node {
types::Node::Begin(n) => {
for statement in &n.statements {
self.iterate_nodes(&statement);
}
}
types::Node::Module(n) => {
if let Some(body) = &n.body {
self.iterate_nodes(&body);
}
}
types::Node::Class(n) => {
if let Some(body) = &n.body {
self.iterate_nodes(&body);
}
}
types::Node::Block(n) => {
if let Some(body) = &n.body {
self.iterate_nodes(&body);
}
}
types::Node::Lvasgn(n) => {
if let Some(body) = &n.value {
self.iterate_nodes(&body);
}
}
types::Node::Send(n) => {
call_handlers(&("send_".to_owned() + &n.method_name));
}
_ => (),
}
}
pub fn add_offense<T: AsRef<str> + std::fmt::Display>(
&self,
cop_name: &'static str,
range: types::Loc,
message: T,
) {
let (line, col) = self
.parser_result
.input
.line_col_for_pos(range.begin)
.unwrap();
let source_line = &self.parser_result.input.lines[line];
let line_string = &self.parser_result.input.bytes[source_line.start..source_line.end];
let (_, col_end) = self
.parser_result
.input
.line_col_for_pos(range.end)
.unwrap();
let annotation = format!("{}{}", " ".repeat(col), "^".repeat(col_end - col));
let msg = format!(
"{}:{}:{}: {} {}\n{}{}",
self.filepath,
line + 1,
col + 1,
cop_name,
message,
str::from_utf8(line_string).unwrap(),
annotation
);
self.offenses.lock().unwrap().push(msg);
}
pub fn print_report(&self) {
self.offenses
.lock()
.unwrap()
.iter()
.for_each(|x| println!("{x}"));
}
pub fn report(&self) -> String {
let mut output = String::new();
self.offenses
.lock()
.unwrap()
.iter()
.for_each(|x| output.push_str(x));
output
}
pub fn total_offenses(&self) -> usize {
self.offenses.lock().unwrap().len()
}
}