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-rw-r--r--askama_parser/src/expr.rs74
-rw-r--r--askama_parser/src/lib.rs128
-rw-r--r--askama_parser/src/node.rs76
3 files changed, 183 insertions, 95 deletions
diff --git a/askama_parser/src/expr.rs b/askama_parser/src/expr.rs
index 3b6bced..803681e 100644
--- a/askama_parser/src/expr.rs
+++ b/askama_parser/src/expr.rs
@@ -12,11 +12,12 @@ use nom::{error_position, IResult};
use super::{
char_lit, identifier, not_ws, num_lit, path_or_identifier, str_lit, ws, Level, PathOrIdentifier,
};
+use crate::ErrorContext;
macro_rules! expr_prec_layer {
( $name:ident, $inner:ident, $op:expr ) => {
- fn $name(i: &'a str, level: Level) -> IResult<&'a str, Self> {
- let level = level.nest(i)?;
+ fn $name(i: &'a str, level: Level) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
+ let (_, level) = level.nest(i)?;
let (i, left) = Self::$inner(i, level)?;
let (i, right) = many0(pair(
ws(tag($op)),
@@ -31,8 +32,8 @@ macro_rules! expr_prec_layer {
}
};
( $name:ident, $inner:ident, $( $op:expr ),+ ) => {
- fn $name(i: &'a str, level: Level) -> IResult<&'a str, Self> {
- let level = level.nest(i)?;
+ fn $name(i: &'a str, level: Level) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
+ let (_, level) = level.nest(i)?;
let (i, left) = Self::$inner(i, level)?;
let (i, right) = many0(pair(
ws(alt(($( tag($op) ),+,))),
@@ -71,8 +72,11 @@ pub enum Expr<'a> {
}
impl<'a> Expr<'a> {
- pub(super) fn arguments(i: &'a str, level: Level) -> IResult<&'a str, Vec<Self>> {
- let level = level.nest(i)?;
+ pub(super) fn arguments(
+ i: &'a str,
+ level: Level,
+ ) -> IResult<&'a str, Vec<Self>, ErrorContext<&'a str>> {
+ let (_, level) = level.nest(i)?;
preceded(
ws(char('(')),
cut(terminated(
@@ -82,8 +86,8 @@ impl<'a> Expr<'a> {
)(i)
}
- pub(super) fn parse(i: &'a str, level: Level) -> IResult<&'a str, Self> {
- let level = level.nest(i)?;
+ pub(super) fn parse(i: &'a str, level: Level) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
+ let (_, level) = level.nest(i)?;
let range_right = move |i| {
pair(
ws(alt((tag("..="), tag("..")))),
@@ -114,9 +118,13 @@ impl<'a> Expr<'a> {
expr_prec_layer!(addsub, muldivmod, "+", "-");
expr_prec_layer!(muldivmod, filtered, "*", "/", "%");
- fn filtered(i: &'a str, level: Level) -> IResult<&'a str, Self> {
- let level = level.nest(i)?;
- fn filter(i: &str, level: Level) -> IResult<&str, (&str, Option<Vec<Expr<'_>>>)> {
+ fn filtered(i: &'a str, level: Level) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
+ let (_, level) = level.nest(i)?;
+ #[allow(clippy::type_complexity)]
+ fn filter(
+ i: &str,
+ level: Level,
+ ) -> IResult<&str, (&str, Option<Vec<Expr<'_>>>), ErrorContext<&str>> {
let (i, (_, fname, args)) = tuple((
char('|'),
ws(identifier),
@@ -143,8 +151,8 @@ impl<'a> Expr<'a> {
Ok((i, res))
}
- fn prefix(i: &'a str, level: Level) -> IResult<&'a str, Self> {
- let level = level.nest(i)?;
+ fn prefix(i: &'a str, level: Level) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
+ let (_, level) = level.nest(i)?;
let (i, (ops, mut expr)) = pair(many0(ws(alt((tag("!"), tag("-"))))), |i| {
Suffix::parse(i, level)
})(i)?;
@@ -154,8 +162,8 @@ impl<'a> Expr<'a> {
Ok((i, expr))
}
- fn single(i: &'a str, level: Level) -> IResult<&'a str, Self> {
- let level = level.nest(i)?;
+ fn single(i: &'a str, level: Level) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
+ let (_, level) = level.nest(i)?;
alt((
Self::num,
Self::str,
@@ -166,8 +174,8 @@ impl<'a> Expr<'a> {
))(i)
}
- fn group(i: &'a str, level: Level) -> IResult<&'a str, Self> {
- let level = level.nest(i)?;
+ fn group(i: &'a str, level: Level) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
+ let (_, level) = level.nest(i)?;
let (i, expr) = preceded(ws(char('(')), opt(|i| Self::parse(i, level)))(i)?;
let expr = match expr {
Some(expr) => expr,
@@ -195,8 +203,8 @@ impl<'a> Expr<'a> {
Ok((i, Self::Tuple(exprs)))
}
- fn array(i: &'a str, level: Level) -> IResult<&'a str, Self> {
- let level = level.nest(i)?;
+ fn array(i: &'a str, level: Level) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
+ let (_, level) = level.nest(i)?;
preceded(
ws(char('[')),
cut(terminated(
@@ -209,7 +217,7 @@ impl<'a> Expr<'a> {
)(i)
}
- fn path_var_bool(i: &'a str) -> IResult<&'a str, Self> {
+ fn path_var_bool(i: &'a str) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
map(path_or_identifier, |v| match v {
PathOrIdentifier::Path(v) => Self::Path(v),
PathOrIdentifier::Identifier(v @ "true") => Self::BoolLit(v),
@@ -218,15 +226,15 @@ impl<'a> Expr<'a> {
})(i)
}
- fn str(i: &'a str) -> IResult<&'a str, Self> {
+ fn str(i: &'a str) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
map(str_lit, Self::StrLit)(i)
}
- fn num(i: &'a str) -> IResult<&'a str, Self> {
+ fn num(i: &'a str) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
map(num_lit, Self::NumLit)(i)
}
- fn char(i: &'a str) -> IResult<&'a str, Self> {
+ fn char(i: &'a str) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
map(char_lit, Self::CharLit)(i)
}
}
@@ -241,8 +249,8 @@ enum Suffix<'a> {
}
impl<'a> Suffix<'a> {
- fn parse(i: &'a str, level: Level) -> IResult<&'a str, Expr<'a>> {
- let level = level.nest(i)?;
+ fn parse(i: &'a str, level: Level) -> IResult<&'a str, Expr<'a>, ErrorContext<&'a str>> {
+ let (_, level) = level.nest(i)?;
let (mut i, mut expr) = Expr::single(i, level)?;
loop {
let (j, suffix) = opt(alt((
@@ -271,8 +279,8 @@ impl<'a> Suffix<'a> {
Ok((i, expr))
}
- fn r#macro(i: &'a str) -> IResult<&'a str, Self> {
- fn nested_parenthesis(input: &str) -> IResult<&str, ()> {
+ fn r#macro(i: &'a str) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
+ fn nested_parenthesis(input: &str) -> IResult<&str, (), ErrorContext<&str>> {
let mut nested = 0;
let mut last = 0;
let mut in_str = false;
@@ -329,7 +337,7 @@ impl<'a> Suffix<'a> {
)(i)
}
- fn attr(i: &'a str) -> IResult<&'a str, Self> {
+ fn attr(i: &'a str) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
map(
preceded(
ws(pair(char('.'), not(char('.')))),
@@ -339,8 +347,8 @@ impl<'a> Suffix<'a> {
)(i)
}
- fn index(i: &'a str, level: Level) -> IResult<&'a str, Self> {
- let level = level.nest(i)?;
+ fn index(i: &'a str, level: Level) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
+ let (_, level) = level.nest(i)?;
map(
preceded(
ws(char('[')),
@@ -350,12 +358,12 @@ impl<'a> Suffix<'a> {
)(i)
}
- fn call(i: &'a str, level: Level) -> IResult<&'a str, Self> {
- let level = level.nest(i)?;
+ fn call(i: &'a str, level: Level) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
+ let (_, level) = level.nest(i)?;
map(move |i| Expr::arguments(i, level), Self::Call)(i)
}
- fn r#try(i: &'a str) -> IResult<&'a str, Self> {
+ fn r#try(i: &'a str) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
map(preceded(take_till(not_ws), char('?')), |_| Self::Try)(i)
}
}
diff --git a/askama_parser/src/lib.rs b/askama_parser/src/lib.rs
index 78b0807..ba5f6a4 100644
--- a/askama_parser/src/lib.rs
+++ b/askama_parser/src/lib.rs
@@ -1,6 +1,7 @@
#![deny(unreachable_pub)]
#![deny(elided_lifetimes_in_paths)]
+use std::borrow::Cow;
use std::cell::Cell;
use std::{fmt, str};
@@ -9,7 +10,7 @@ use nom::bytes::complete::{escaped, is_not, tag, take_till};
use nom::character::complete::char;
use nom::character::complete::{anychar, digit1};
use nom::combinator::{cut, eof, map, opt, recognize};
-use nom::error::ErrorKind;
+use nom::error::{Error, ErrorKind, FromExternalError};
use nom::multi::many1;
use nom::sequence::{delimited, pair, preceded, terminated, tuple};
use nom::{error_position, AsChar, IResult, InputTakeAtPosition};
@@ -76,14 +77,16 @@ pub struct Ast<'a> {
impl<'a> Ast<'a> {
pub fn from_str(src: &'a str, syntax: &Syntax<'_>) -> Result<Self, ParseError> {
let parse = |i: &'a str| Node::many(i, &State::new(syntax));
- let err = match terminated(parse, cut(eof))(src) {
+ let (input, message) = match terminated(parse, cut(eof))(src) {
Ok(("", nodes)) => return Ok(Self { nodes }),
Ok(_) => unreachable!("eof() is not eof?"),
- Err(nom::Err::Error(err)) | Err(nom::Err::Failure(err)) => err,
+ Err(
+ nom::Err::Error(ErrorContext { input, message, .. })
+ | nom::Err::Failure(ErrorContext { input, message, .. }),
+ ) => (input, message),
Err(nom::Err::Incomplete(_)) => return Err(ParseError("parsing incomplete".into())),
};
- let nom::error::Error { input, .. } = err;
let offset = src.len() - input.len();
let (source_before, source_after) = src.split_at(offset);
@@ -96,7 +99,12 @@ impl<'a> Ast<'a> {
let column = last_line.chars().count();
let msg = format!(
- "problems parsing template source at row {}, column {} near:\n{}",
+ "{}problems parsing template source at row {}, column {} near:\n{}",
+ if let Some(message) = message {
+ format!("error: {message}\n")
+ } else {
+ String::new()
+ },
row + 1,
column,
source_after,
@@ -121,6 +129,55 @@ impl fmt::Display for ParseError {
}
}
+/// This type is used to handle `nom` errors and in particular to add custom error messages.
+/// It used to generate `ParserError`.
+///
+/// It cannot be used to replace `ParseError` because it expects a generic, which would make
+/// `askama`'s users experience less good (since this generic is only needed for `nom`).
+#[derive(Debug)]
+pub(crate) struct ErrorContext<I> {
+ pub(crate) input: I,
+ pub(crate) message: Option<Cow<'static, str>>,
+}
+
+impl<I> nom::error::ParseError<I> for ErrorContext<I> {
+ fn from_error_kind(input: I, _code: ErrorKind) -> Self {
+ Self {
+ input,
+ message: None,
+ }
+ }
+
+ fn append(_: I, _: ErrorKind, other: Self) -> Self {
+ other
+ }
+}
+
+impl<I, E: std::fmt::Display> FromExternalError<I, E> for ErrorContext<I> {
+ fn from_external_error(input: I, _kind: ErrorKind, e: E) -> Self {
+ Self {
+ input,
+ message: Some(Cow::Owned(e.to_string())),
+ }
+ }
+}
+
+impl<I> ErrorContext<I> {
+ pub(crate) fn from_err(error: nom::Err<Error<I>>) -> nom::Err<Self> {
+ match error {
+ nom::Err::Incomplete(i) => nom::Err::Incomplete(i),
+ nom::Err::Failure(Error { input, .. }) => nom::Err::Failure(Self {
+ input,
+ message: None,
+ }),
+ nom::Err::Error(Error { input, .. }) => nom::Err::Error(Self {
+ input,
+ message: None,
+ }),
+ }
+ }
+}
+
fn is_ws(c: char) -> bool {
matches!(c, ' ' | '\t' | '\r' | '\n')
}
@@ -130,16 +187,16 @@ fn not_ws(c: char) -> bool {
}
fn ws<'a, O>(
- inner: impl FnMut(&'a str) -> IResult<&'a str, O>,
-) -> impl FnMut(&'a str) -> IResult<&'a str, O> {
+ inner: impl FnMut(&'a str) -> IResult<&'a str, O, ErrorContext<&'a str>>,
+) -> impl FnMut(&'a str) -> IResult<&'a str, O, ErrorContext<&'a str>> {
delimited(take_till(not_ws), inner, take_till(not_ws))
}
/// Skips input until `end` was found, but does not consume it.
/// Returns tuple that would be returned when parsing `end`.
fn skip_till<'a, O>(
- end: impl FnMut(&'a str) -> IResult<&'a str, O>,
-) -> impl FnMut(&'a str) -> IResult<&'a str, (&'a str, O)> {
+ end: impl FnMut(&'a str) -> IResult<&'a str, O, ErrorContext<&'a str>>,
+) -> impl FnMut(&'a str) -> IResult<&'a str, (&'a str, O), ErrorContext<&'a str>> {
enum Next<O> {
IsEnd(O),
NotEnd(char),
@@ -157,8 +214,10 @@ fn skip_till<'a, O>(
}
}
-fn keyword<'a>(k: &'a str) -> impl FnMut(&'a str) -> IResult<&'a str, &'a str> {
- move |i: &'a str| -> IResult<&'a str, &'a str> {
+fn keyword<'a>(
+ k: &'a str,
+) -> impl FnMut(&'a str) -> IResult<&'a str, &'a str, ErrorContext<&'a str>> {
+ move |i: &'a str| -> IResult<&'a str, &'a str, ErrorContext<&'a str>> {
let (j, v) = identifier(i)?;
if k == v {
Ok((j, v))
@@ -168,15 +227,15 @@ fn keyword<'a>(k: &'a str) -> impl FnMut(&'a str) -> IResult<&'a str, &'a str> {
}
}
-fn identifier(input: &str) -> IResult<&str, &str> {
- fn start(s: &str) -> IResult<&str, &str> {
+fn identifier(input: &str) -> IResult<&str, &str, ErrorContext<&str>> {
+ fn start(s: &str) -> IResult<&str, &str, ErrorContext<&str>> {
s.split_at_position1_complete(
|c| !(c.is_alpha() || c == '_' || c >= '\u{0080}'),
nom::error::ErrorKind::Alpha,
)
}
- fn tail(s: &str) -> IResult<&str, &str> {
+ fn tail(s: &str) -> IResult<&str, &str, ErrorContext<&str>> {
s.split_at_position1_complete(
|c| !(c.is_alphanum() || c == '_' || c >= '\u{0080}'),
nom::error::ErrorKind::Alpha,
@@ -186,11 +245,11 @@ fn identifier(input: &str) -> IResult<&str, &str> {
recognize(pair(start, opt(tail)))(input)
}
-fn bool_lit(i: &str) -> IResult<&str, &str> {
+fn bool_lit(i: &str) -> IResult<&str, &str, ErrorContext<&str>> {
alt((keyword("false"), keyword("true")))(i)
}
-fn num_lit(i: &str) -> IResult<&str, &str> {
+fn num_lit(i: &str) -> IResult<&str, &str, ErrorContext<&str>> {
recognize(tuple((
opt(char('-')),
digit1,
@@ -198,7 +257,7 @@ fn num_lit(i: &str) -> IResult<&str, &str> {
)))(i)
}
-fn str_lit(i: &str) -> IResult<&str, &str> {
+fn str_lit(i: &str) -> IResult<&str, &str, ErrorContext<&str>> {
let (i, s) = delimited(
char('"'),
opt(escaped(is_not("\\\""), '\\', anychar)),
@@ -207,7 +266,7 @@ fn str_lit(i: &str) -> IResult<&str, &str> {
Ok((i, s.unwrap_or_default()))
}
-fn char_lit(i: &str) -> IResult<&str, &str> {
+fn char_lit(i: &str) -> IResult<&str, &str, ErrorContext<&str>> {
let (i, s) = delimited(
char('\''),
opt(escaped(is_not("\\\'"), '\\', anychar)),
@@ -221,7 +280,7 @@ enum PathOrIdentifier<'a> {
Identifier(&'a str),
}
-fn path_or_identifier(i: &str) -> IResult<&str, PathOrIdentifier<'_>> {
+fn path_or_identifier(i: &str) -> IResult<&str, PathOrIdentifier<'_>, ErrorContext<&str>> {
let root = ws(opt(tag("::")));
let tail = opt(many1(preceded(ws(tag("::")), identifier)));
@@ -267,36 +326,40 @@ impl<'a> State<'a> {
}
}
- fn nest<'b>(&self, i: &'b str) -> Result<(), nom::Err<nom::error::Error<&'b str>>> {
- self.level.set(self.level.get().nest(i)?);
- Ok(())
+ fn nest<'b>(&self, i: &'b str) -> IResult<&'b str, (), ErrorContext<&'b str>> {
+ let (_, level) = self.level.get().nest(i)?;
+ self.level.set(level);
+ Ok((i, ()))
}
fn leave(&self) {
self.level.set(self.level.get().leave());
}
- fn tag_block_start<'i>(&self, i: &'i str) -> IResult<&'i str, &'i str> {
+ fn tag_block_start<'i>(&self, i: &'i str) -> IResult<&'i str, &'i str, ErrorContext<&'i str>> {
tag(self.syntax.block_start)(i)
}
- fn tag_block_end<'i>(&self, i: &'i str) -> IResult<&'i str, &'i str> {
+ fn tag_block_end<'i>(&self, i: &'i str) -> IResult<&'i str, &'i str, ErrorContext<&'i str>> {
tag(self.syntax.block_end)(i)
}
- fn tag_comment_start<'i>(&self, i: &'i str) -> IResult<&'i str, &'i str> {
+ fn tag_comment_start<'i>(
+ &self,
+ i: &'i str,
+ ) -> IResult<&'i str, &'i str, ErrorContext<&'i str>> {
tag(self.syntax.comment_start)(i)
}
- fn tag_comment_end<'i>(&self, i: &'i str) -> IResult<&'i str, &'i str> {
+ fn tag_comment_end<'i>(&self, i: &'i str) -> IResult<&'i str, &'i str, ErrorContext<&'i str>> {
tag(self.syntax.comment_end)(i)
}
- fn tag_expr_start<'i>(&self, i: &'i str) -> IResult<&'i str, &'i str> {
+ fn tag_expr_start<'i>(&self, i: &'i str) -> IResult<&'i str, &'i str, ErrorContext<&'i str>> {
tag(self.syntax.expr_start)(i)
}
- fn tag_expr_end<'i>(&self, i: &'i str) -> IResult<&'i str, &'i str> {
+ fn tag_expr_end<'i>(&self, i: &'i str) -> IResult<&'i str, &'i str, ErrorContext<&'i str>> {
tag(self.syntax.expr_end)(i)
}
@@ -340,12 +403,15 @@ impl Default for Syntax<'static> {
pub(crate) struct Level(u8);
impl Level {
- fn nest(self, i: &str) -> Result<Level, nom::Err<nom::error::Error<&str>>> {
+ fn nest(self, i: &str) -> IResult<&str, Level, ErrorContext<&str>> {
if self.0 >= Self::MAX_DEPTH {
- return Err(nom::Err::Failure(error_position!(i, ErrorKind::TooLarge)));
+ return Err(ErrorContext::from_err(nom::Err::Failure(error_position!(
+ i,
+ ErrorKind::TooLarge
+ ))));
}
- Ok(Level(self.0 + 1))
+ Ok((i, Level(self.0 + 1)))
}
fn leave(&self) -> Self {
diff --git a/askama_parser/src/node.rs b/askama_parser/src/node.rs
index ba4d09e..596b99a 100644
--- a/askama_parser/src/node.rs
+++ b/askama_parser/src/node.rs
@@ -11,6 +11,8 @@ use nom::multi::{fold_many0, many0, many1, separated_list0, separated_list1};
use nom::sequence::{delimited, pair, preceded, terminated, tuple};
use nom::{error_position, IResult};
+use crate::ErrorContext;
+
use super::{
bool_lit, char_lit, identifier, is_ws, keyword, num_lit, path_or_identifier, skip_till,
str_lit, ws, Expr, PathOrIdentifier, State,
@@ -37,7 +39,10 @@ pub enum Node<'a> {
}
impl<'a> Node<'a> {
- pub(super) fn many(i: &'a str, s: &State<'_>) -> IResult<&'a str, Vec<Self>> {
+ pub(super) fn many(
+ i: &'a str,
+ s: &State<'_>,
+ ) -> IResult<&'a str, Vec<Self>, ErrorContext<&'a str>> {
complete(many0(alt((
map(|i| Lit::parse(i, s), Self::Lit),
map(|i| Comment::parse(i, s), Self::Comment),
@@ -46,7 +51,7 @@ impl<'a> Node<'a> {
))))(i)
}
- fn parse(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self> {
+ fn parse(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
let mut p = delimited(
|i| s.tag_block_start(i),
alt((
@@ -74,7 +79,7 @@ impl<'a> Node<'a> {
result
}
- fn r#break(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self> {
+ fn r#break(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
let mut p = tuple((
opt(Whitespace::parse),
ws(keyword("break")),
@@ -87,7 +92,7 @@ impl<'a> Node<'a> {
Ok((j, Self::Break(Ws(pws, nws))))
}
- fn r#continue(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self> {
+ fn r#continue(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
let mut p = tuple((
opt(Whitespace::parse),
ws(keyword("continue")),
@@ -100,7 +105,7 @@ impl<'a> Node<'a> {
Ok((j, Self::Continue(Ws(pws, nws))))
}
- fn expr(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self> {
+ fn expr(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
let mut p = tuple((
|i| s.tag_expr_start(i),
cut(tuple((
@@ -128,7 +133,7 @@ pub enum Target<'a> {
}
impl<'a> Target<'a> {
- pub(super) fn parse(i: &'a str) -> IResult<&'a str, Self> {
+ pub(super) fn parse(i: &'a str) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
let mut opt_opening_paren = map(opt(ws(char('('))), |o| o.is_some());
let mut opt_closing_paren = map(opt(ws(char(')'))), |o| o.is_some());
let mut opt_opening_brace = map(opt(ws(char('{'))), |o| o.is_some());
@@ -211,7 +216,7 @@ impl<'a> Target<'a> {
map(identifier, Self::Name)(i)
}
- fn lit(i: &'a str) -> IResult<&'a str, Self> {
+ fn lit(i: &'a str) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
alt((
map(str_lit, Self::StrLit),
map(char_lit, Self::CharLit),
@@ -220,7 +225,7 @@ impl<'a> Target<'a> {
))(i)
}
- fn named(i: &'a str) -> IResult<&str, (&str, Self)> {
+ fn named(i: &'a str) -> IResult<&str, (&str, Self), ErrorContext<&'a str>> {
let (i, (src, target)) = pair(identifier, opt(preceded(ws(char(':')), Self::parse)))(i)?;
Ok((i, (src, target.unwrap_or(Self::Name(src)))))
}
@@ -234,7 +239,7 @@ pub struct When<'a> {
}
impl<'a> When<'a> {
- fn r#match(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self> {
+ fn r#match(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
let mut p = tuple((
|i| s.tag_block_start(i),
opt(Whitespace::parse),
@@ -257,7 +262,7 @@ impl<'a> When<'a> {
}
#[allow(clippy::self_named_constructors)]
- fn when(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self> {
+ fn when(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
let mut p = tuple((
|i| s.tag_block_start(i),
opt(Whitespace::parse),
@@ -289,7 +294,7 @@ pub struct Cond<'a> {
}
impl<'a> Cond<'a> {
- fn parse(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self> {
+ fn parse(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
let mut p = tuple((
|i| s.tag_block_start(i),
opt(Whitespace::parse),
@@ -320,7 +325,7 @@ pub struct CondTest<'a> {
}
impl<'a> CondTest<'a> {
- fn parse(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self> {
+ fn parse(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
let mut p = preceded(
ws(keyword("if")),
cut(tuple((
@@ -345,7 +350,7 @@ pub enum Whitespace {
}
impl Whitespace {
- fn parse(i: &str) -> IResult<&str, Self> {
+ fn parse(i: &str) -> IResult<&str, Self, ErrorContext<&str>> {
alt((
value(Self::Preserve, char('+')),
value(Self::Suppress, char('-')),
@@ -367,8 +372,11 @@ pub struct Loop<'a> {
}
impl<'a> Loop<'a> {
- fn parse(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self> {
- fn content<'a>(i: &'a str, s: &State<'_>) -> IResult<&'a str, Vec<Node<'a>>> {
+ fn parse(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
+ fn content<'a>(
+ i: &'a str,
+ s: &State<'_>,
+ ) -> IResult<&'a str, Vec<Node<'a>>, ErrorContext<&'a str>> {
s.enter_loop();
let result = Node::many(i, s);
s.leave_loop();
@@ -448,8 +456,8 @@ pub struct Macro<'a> {
}
impl<'a> Macro<'a> {
- fn parse(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self> {
- fn parameters(i: &str) -> IResult<&str, Vec<&str>> {
+ fn parse(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
+ fn parameters(i: &str) -> IResult<&str, Vec<&str>, ErrorContext<&str>> {
delimited(
ws(char('(')),
separated_list0(char(','), ws(identifier)),
@@ -482,7 +490,10 @@ impl<'a> Macro<'a> {
if name == "super" {
// TODO: yield a a better error message here
- return Err(nom::Err::Failure(Error::new(i, ErrorKind::Fail)));
+ return Err(ErrorContext::from_err(nom::Err::Failure(Error::new(
+ i,
+ ErrorKind::Fail,
+ ))));
}
Ok((
@@ -506,7 +517,7 @@ pub struct Import<'a> {
}
impl<'a> Import<'a> {
- fn parse(i: &'a str) -> IResult<&'a str, Self> {
+ fn parse(i: &'a str) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
let mut p = tuple((
opt(Whitespace::parse),
ws(keyword("import")),
@@ -537,7 +548,7 @@ pub struct Call<'a> {
}
impl<'a> Call<'a> {
- fn parse(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self> {
+ fn parse(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
let mut p = tuple((
opt(Whitespace::parse),
ws(keyword("call")),
@@ -572,7 +583,7 @@ pub struct Match<'a> {
}
impl<'a> Match<'a> {
- fn parse(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self> {
+ fn parse(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
let mut p = tuple((
opt(Whitespace::parse),
ws(keyword("match")),
@@ -623,7 +634,7 @@ pub struct BlockDef<'a> {
}
impl<'a> BlockDef<'a> {
- fn parse(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self> {
+ fn parse(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
let mut start = tuple((
opt(Whitespace::parse),
ws(keyword("block")),
@@ -664,7 +675,7 @@ pub struct Lit<'a> {
}
impl<'a> Lit<'a> {
- fn parse(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self> {
+ fn parse(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
let p_start = alt((
tag(s.syntax.block_start),
tag(s.syntax.comment_start),
@@ -704,7 +715,7 @@ pub struct Raw<'a> {
}
impl<'a> Raw<'a> {
- fn parse(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self> {
+ fn parse(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
let endraw = tuple((
|i| s.tag_block_start(i),
opt(Whitespace::parse),
@@ -739,7 +750,7 @@ pub struct Let<'a> {
}
impl<'a> Let<'a> {
- fn parse(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self> {
+ fn parse(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
let mut p = tuple((
opt(Whitespace::parse),
ws(alt((keyword("let"), keyword("set")))),
@@ -772,7 +783,7 @@ pub struct If<'a> {
}
impl<'a> If<'a> {
- fn parse(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self> {
+ fn parse(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
let mut p = tuple((
opt(Whitespace::parse),
|i| CondTest::parse(i, s),
@@ -817,7 +828,7 @@ pub struct Include<'a> {
}
impl<'a> Include<'a> {
- fn parse(i: &'a str) -> IResult<&'a str, Self> {
+ fn parse(i: &'a str) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
let mut p = tuple((
opt(Whitespace::parse),
ws(keyword("include")),
@@ -840,7 +851,7 @@ pub struct Extends<'a> {
}
impl<'a> Extends<'a> {
- fn parse(i: &'a str) -> IResult<&'a str, Self> {
+ fn parse(i: &'a str) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
let (i, path) = preceded(ws(keyword("extends")), cut(ws(str_lit)))(i)?;
Ok((i, Self { path }))
}
@@ -853,12 +864,15 @@ pub struct Comment<'a> {
}
impl<'a> Comment<'a> {
- fn parse(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self> {
- fn body<'a>(mut i: &'a str, s: &State<'_>) -> IResult<&'a str, &'a str> {
+ fn parse(i: &'a str, s: &State<'_>) -> IResult<&'a str, Self, ErrorContext<&'a str>> {
+ fn body<'a>(
+ mut i: &'a str,
+ s: &State<'_>,
+ ) -> IResult<&'a str, &'a str, ErrorContext<&'a str>> {
let mut level = 0;
loop {
let (end, tail) = take_until(s.syntax.comment_end)(i)?;
- match take_until::<_, _, Error<_>>(s.syntax.comment_start)(i) {
+ match take_until::<_, _, ErrorContext<_>>(s.syntax.comment_start)(i) {
Ok((start, _)) if start.as_ptr() < end.as_ptr() => {
level += 1;
i = &start[2..];
generated by cgit (git 2.34.1) at 2024-11-25 19:15:43 +0000