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pub use directive::Directive;
pub use owner::Owner;
pub use per_file::PerFile;
pub use statement::Statement;
use error::ParseError;
use nom::types::CompleteStr;
pub mod error;
mod directive;
mod owner;
mod per_file;
mod statement;
pub fn parse<T: AsRef<str>>(input: T) -> Result<Vec<Statement>, ParseError> {
let filtered = input
.as_ref()
.split("\n")
.enumerate()
.map(|(line_num, content)| (line_num + 1, remove_inline_comments(content)))
.filter(|(_, content)| !content.is_empty() && !content.starts_with("#"));
let mut parsed = vec![];
for (line_num, content) in filtered {
statement::statement(CompleteStr(content))
.map(|(_, output)| parsed.push(output))
.map_err(|e| ParseError::from_nom(line_num, e))?;
}
Ok(parsed)
}
fn is_whitespace(c: char) -> bool {
c == ' ' || c == '\t' || c == '\n'
}
fn remove_inline_comments(line: &str) -> &str {
line.trim().split("#").nth(0).unwrap()
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn empty() {
assert!(parse("").unwrap().is_empty());
}
#[test]
fn empty_ws() {
assert!(parse(" ").unwrap().is_empty());
}
#[test]
fn comment() {
assert!(parse("# comment").unwrap().is_empty());
}
#[test]
fn comment_ws() {
assert!(parse("#comment").unwrap().is_empty());
}
#[test]
fn inline_comment() {
assert_eq!(
parse("set noparent # comment").unwrap(),
vec![Statement::Directive(Directive::NoParent)]
);
}
#[test]
fn inline_comment_ws() {
assert_eq!(
parse("set noparent# comment").unwrap(),
vec![Statement::Directive(Directive::NoParent)]
);
}
#[test]
fn multiline() {
assert_eq!(
parse("set noparent\n*").unwrap(),
vec![
Statement::Directive(Directive::NoParent),
Statement::Directive(Directive::StarGlob)
]
);
}
#[test]
fn multiline_trailing_newline() {
assert_eq!(
parse("set noparent\n*\n").unwrap(),
vec![
Statement::Directive(Directive::NoParent),
Statement::Directive(Directive::StarGlob)
]
);
}
#[test]
fn multiline_leading_newline() {
assert_eq!(
parse("\nset noparent\n*").unwrap(),
vec![
Statement::Directive(Directive::NoParent),
Statement::Directive(Directive::StarGlob)
]
);
}
#[test]
fn multiline_comments() {
assert_eq!(
parse("set noparent # comment\n* # comment").unwrap(),
vec![
Statement::Directive(Directive::NoParent),
Statement::Directive(Directive::StarGlob)
]
);
}
}