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use crate::span::{FileId, LocatedSpan, Pos, Span};
use anstyle::{AnsiColor, Color, Style};
use core::fmt;
use indexmap::IndexMap;
use nom::error::ErrorKind;
use std::path::PathBuf;
impl From<nom::Err<nom::error::Error<LocatedSpan<'_>>>> for ParseError {
#[inline]
fn from(e: nom::Err<nom::error::Error<LocatedSpan<'_>>>) -> Self {
match e {
nom::Err::Incomplete(_) => unreachable!(),
nom::Err::Failure(e) | nom::Err::Error(e) => {
ParseErrorInner::Nom(e.code).record(e.input)
}
}
}
}
#[derive(Debug, thiserror::Error)]
pub enum ParseErrorInner {
#[error("Incomplete")]
IO(#[from] std::io::Error),
#[error("Can NOT find section [{section}] in file {path}")]
NoLibSection { path: PathBuf, section: String },
/// Nom Error
#[error("Syntax error")]
Nom(ErrorKind),
/// something else
#[error("{0:?}")]
Unknown(Span),
#[error("Circular definition")]
CircularDefinition(IndexMap<FileId, Option<Pos>>, usize),
}
impl ParseErrorInner {
pub fn record(self, i: LocatedSpan) -> ParseError {
ParseError {
pos: Pos::new(i),
err: self,
}
}
pub fn with(self, pos: Option<Pos>) -> ParseError {
ParseError { pos, err: self }
}
}
#[derive(Debug, Clone, Copy)]
struct Styles {
msg: Style,
typ: Style,
err: Style,
}
#[derive(Debug)]
pub struct ParseError {
pub pos: Option<Pos>,
pub err: ParseErrorInner,
}
impl ParseError {
pub fn report(&self, has_err: &mut bool, file_id: &FileId, file: &str) {
*has_err = true;
struct ReportDisplay<'a> {
err: &'a ParseError,
file_id: &'a FileId,
file: &'a str,
}
impl fmt::Display for ReportDisplay<'_> {
#[inline]
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
use super::builder::Builder as _;
let styles = if colored::control::SHOULD_COLORIZE.should_colorize() {
Styles {
msg: Style::new().fg_color(Some(Color::Ansi(AnsiColor::BrightMagenta))),
typ: Style::new()
.fg_color(Some(Color::Ansi(AnsiColor::BrightMagenta)))
.bold(),
err: Style::new()
.fg_color(Some(AnsiColor::BrightRed.into()))
.bold(),
}
} else {
Styles {
msg: Style::new(),
typ: Style::new(),
err: Style::new(),
}
};
write!(
f,
"\nFile {}\"{}\"{}",
styles.msg.render(),
self.file_id.path().display(),
styles.msg.render_reset()
)?;
if let Some(pos) = self.err.pos {
write!(
f,
", line {}{}{}",
styles.msg.render(),
pos.line_num,
styles.msg.render_reset()
)?;
let span = unsafe {
LocatedSpan::new_from_raw_offset(
pos.start,
pos.line_num,
&self.file[pos.start..],
(),
)
};
if let Ok(s) = core::str::from_utf8(span.get_line_beginning()) {
write!(f, "\n{s}\n")?;
for _ in 0..span.get_column() - 1 {
write!(f, " ")?;
}
write!(f, "{}<-{}", styles.err.render(), styles.err.render_reset())?;
}
}
writeln!(f)?;
match &self.err.err {
ParseErrorInner::IO(error) => {
writeln!(
f,
"{}Error{}: {}{error}{}",
styles.typ.render(),
styles.typ.render_reset(),
styles.msg.render(),
styles.msg.render_reset()
)
}
ParseErrorInner::NoLibSection { path, section } => {
writeln!(
f,
"{}Error{}: {}Can NOT find section `{section}` in file \"{}\"{}",
styles.typ.render(),
styles.typ.render_reset(),
styles.msg.render(),
path.display(),
styles.msg.render_reset()
)
}
ParseErrorInner::Nom(e) => {
write!(
f,
"{}ParserError{}: {}{e:?}{}",
styles.typ.render(),
styles.typ.render_reset(),
styles.msg.render(),
styles.msg.render_reset()
)
}
ParseErrorInner::Unknown(span) => {
writeln!(
f,
"{}SyntaxError{}: {}Unknwon command `{}`{}",
styles.typ.render(),
styles.typ.render_reset(),
styles.msg.render(),
span.build(self.file),
styles.msg.render_reset()
)
}
ParseErrorInner::CircularDefinition(index_set, idx) => {
struct FileDisplay<'a>(&'a FileId, &'a Option<Pos>);
impl fmt::Display for FileDisplay<'_> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self.0 {
FileId::Include { path } => {
write!(f, "File \"{}\"", path.display())?;
if let Some(pos) = self.1 {
write!(f, ", line {}", pos.line_num)?;
}
Ok(())
}
FileId::Section { path, section } => {
write!(f, "File \"{}\"", path.display())?;
if let Some(pos) = self.1 {
write!(f, ", line {}", pos.line_num)?;
}
write!(f, ", section {section}")
}
}
}
}
impl<'s> FileDisplay<'s> {
fn new(f: (&'s FileId, &'s Option<Pos>)) -> Self {
Self(f.0, f.1)
}
}
let circular_file = index_set.get_index(*idx).unwrap();
writeln!(
f,
"{}CircularDefinition{}: {}Detect circular definition in {}{}",
styles.typ.render(),
styles.typ.render_reset(),
styles.msg.render(),
FileDisplay::new(circular_file),
styles.msg.render_reset()
)?;
for (i, file) in index_set.iter().enumerate() {
if *idx == i {
writeln!(
f,
"{} * {}{}\n ↓",
styles.err.render(),
FileDisplay::new(file),
styles.err.render_reset()
)?;
} else {
writeln!(f, " {}\n ↓", FileDisplay::new(file))?;
}
}
writeln!(
f,
"{} * {}{}",
styles.err.render(),
FileDisplay::new(circular_file),
styles.err.render_reset()
)
}
}
}
}
log::error!(
"{}",
ReportDisplay {
err: self,
file_id,
file
}
)
}
}