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Author SHA1 Message Date
caedb752b7
Add diagnostics and testing 2024-12-04 14:57:33 +03:00
0fce67c7d7
errors are now pretty 2024-12-03 23:14:54 +03:00
15 changed files with 1432 additions and 84 deletions

942
Cargo.lock generated
View file

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source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "784e0ac535deb450455cbfa28a6f0df145ea1bb7ae51b821cf5e7927fdcfbdd0"
dependencies = [
"pin-project-lite",
"tracing-attributes",
"tracing-core",
]
[[package]]
name = "tracing-attributes"
version = "0.1.28"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "395ae124c09f9e6918a2310af6038fba074bcf474ac352496d5910dd59a2226d"
dependencies = [
"proc-macro2",
"quote",
"syn",
]
[[package]]
name = "tracing-core"
version = "0.1.33"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e672c95779cf947c5311f83787af4fa8fffd12fb27e4993211a84bdfd9610f9c"
dependencies = [
"once_cell",
"valuable",
]
[[package]]
name = "tracing-error"
version = "0.2.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8b1581020d7a273442f5b45074a6a57d5757ad0a47dac0e9f0bd57b81936f3db"
dependencies = [
"tracing",
"tracing-subscriber",
]
[[package]]
name = "tracing-log"
version = "0.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ee855f1f400bd0e5c02d150ae5de3840039a3f54b025156404e34c23c03f47c3"
dependencies = [
"log",
"once_cell",
"tracing-core",
]
[[package]]
name = "tracing-subscriber"
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source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e8189decb5ac0fa7bc8b96b7cb9b2701d60d48805aca84a238004d665fcc4008"
dependencies = [
"matchers",
"nu-ansi-term",
"once_cell",
"regex",
"sharded-slab",
"smallvec",
"thread_local",
"tracing",
"tracing-core",
"tracing-log",
]
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"tracing-core",
"tracing-subscriber",
"tracy-client",
]
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dependencies = [
"loom",
"once_cell",
"tracy-client-sys",
]
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"cc",
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]
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"windows-implement",
"windows-interface",
"windows-result",
"windows-strings",
"windows-targets",
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"windows_i686_gnu",
"windows_i686_gnullvm",
"windows_i686_msvc",
"windows_x86_64_gnu",
"windows_x86_64_gnullvm",
"windows_x86_64_msvc",
]
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[[package]]
name = "zerocopy"
version = "0.7.35"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1b9b4fd18abc82b8136838da5d50bae7bdea537c574d8dc1a34ed098d6c166f0"
dependencies = [
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"zerocopy-derive",
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[[package]]
name = "zerocopy-derive"
version = "0.7.35"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "fa4f8080344d4671fb4e831a13ad1e68092748387dfc4f55e356242fae12ce3e"
dependencies = [
"proc-macro2",
"quote",
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]

View file

@ -6,3 +6,43 @@ members = [
"integrations/axum" "integrations/axum"
] ]
resolver = "2" resolver = "2"
[workspace.dependencies]
eyre = "0.6"
tracing = "0.1"
# crates/
cogs_ast = { path = "crates/ast" }
cogs_codegen = { path = "crates/codegen" }
cogs_parser = { path = "crates/parser" }
[package]
name = "cogs"
version = "0.1.0"
edition = "2021"
description = "Rust code blocks in HTML"
[dependencies]
# errors yay
color-eyre = "0.6"
eyre.workspace = true
tracing.workspace = true
tracing-subscriber = { version = "0.3", features = ["env-filter"] }
tracing-error = "0.2"
tracing-tracy = "0.11"
cogs_ast.workspace = true
cogs_codegen.workspace = true
cogs_parser.workspace = true
proptest = "1.5.0"
insta = "1.41.1"
ariadne = "0.5.0"
# Test optimization
[profile.dev.package]
insta.opt-level = 3
similar.opt-level = 3
[features]
default = []
tracy = ["tracing-tracy/enable"]

View file

@ -4,3 +4,5 @@ version = "0.1.0"
edition = "2021" edition = "2021"
[dependencies] [dependencies]
cogs_ast = { path = "../ast" }
eyre.workspace = true

View file

@ -1,14 +1,5 @@
pub fn add(left: u64, right: u64) -> u64 { extern crate cogs_ast as ast;
left + right
}
#[cfg(test)] pub fn generate(ast: &ast::Component) -> eyre::Result<String> {
mod tests { Ok(format!("not yet implemented"))
use super::*;
#[test]
fn it_works() {
let result = add(2, 2);
assert_eq!(result, 4);
}
} }

View file

@ -6,3 +6,4 @@ edition = "2021"
[dependencies] [dependencies]
nom = "7.1.3" nom = "7.1.3"
cogs_ast.path = "../ast" cogs_ast.path = "../ast"
tracing.workspace = true

179
crates/parser/src/error.rs Normal file
View file

@ -0,0 +1,179 @@
use std::{borrow::Cow, fmt, ops::Range};
use nom::{
error::{ContextError, FromExternalError, ParseError},
Err,
};
#[derive(Debug)]
pub struct Error<I> {
pub errors: Vec<(I, ErrorKind)>,
pub message: Option<String>,
pub notes: Vec<String>,
pub help: Option<String>,
}
impl<I> Default for Error<I> {
fn default() -> Self {
Self {
errors: Vec::new(),
message: None,
notes: Vec::new(),
help: None,
}
}
}
impl<I> Error<I> {
pub fn single(input: I, error: ErrorKind) -> Self {
Self {
errors: vec![(input, error)],
..Default::default()
}
}
pub fn eof(input: I) -> Err<Self> {
Err::Error(Self::single(
input,
ErrorKind::Nom(nom::error::ErrorKind::Eof),
))
}
pub fn make_custom(input: I, message: impl Into<Cow<'static, str>>) -> Self {
let cow: Cow<'static, str> = message.into();
Self::single(input, ErrorKind::Custom(cow.clone())).with_message(cow.to_string())
}
pub fn with_message(mut self, message: impl ToString) -> Self {
self.message = Some(message.to_string());
self
}
pub fn with_note(mut self, note: impl ToString) -> Self {
self.notes.push(note.to_string());
self
}
pub fn with_help(mut self, help: impl ToString) -> Self {
self.help = Some(help.to_string());
self
}
pub fn clear_message(mut self) -> Self {
self.message = None;
self
}
pub fn custom(input: I, message: impl Into<Cow<'static, str>>) -> Err<Self> {
Err::Error(Self::make_custom(input, message))
}
pub fn custom_failure(input: I, message: impl Into<Cow<'static, str>>) -> Err<Self> {
Err::Failure(Self::make_custom(input, message))
}
}
#[derive(Debug)]
pub struct ReportInfo {
pub message: Option<String>,
pub notes: Vec<String>,
pub help: Option<String>,
}
impl<'a> Error<&'a str> {
pub fn resolve_spans(
self,
main: &'a str,
) -> (
impl Iterator<Item = (Range<usize>, ErrorKind)> + use<'a>,
ReportInfo,
) {
// what in the hellspawn is use<'a>
(
self.errors.into_iter().map(|(input, kind)| {
let main_ptr = main.as_ptr() as usize;
let input_ptr = input.as_ptr() as usize;
let start = input_ptr.abs_diff(main_ptr);
let end = start + input.len();
(start..end, kind)
}),
ReportInfo {
message: self.message,
notes: self.notes,
help: self.help,
},
)
}
}
impl<I: fmt::Display> fmt::Display for Error<I> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
for (input, error) in &self.errors {
match error {
ErrorKind::Nom(e) => writeln!(f, "{e:?} at:\n{input}")?,
ErrorKind::Char(c) => writeln!(f, "expected '{c}' at:\n{input}")?,
ErrorKind::Context(s) => writeln!(f, "in {s}, at:\n{input}")?,
ErrorKind::Custom(s) => writeln!(f, "{s} at:\n{input}")?,
}
}
Ok(())
}
}
impl<I: fmt::Debug + fmt::Display> std::error::Error for Error<I> {}
impl<I> ContextError<I> for Error<I> {
fn add_context(input: I, ctx: &'static str, mut other: Self) -> Self {
other.errors.push((input, ErrorKind::Context(ctx)));
other
}
}
impl<I, E: fmt::Display> FromExternalError<I, E> for Error<I> {
fn from_external_error(input: I, _kind: nom::error::ErrorKind, e: E) -> Self {
Self::single(input, ErrorKind::Custom(Cow::Owned(e.to_string())))
}
}
impl<I> ParseError<I> for Error<I> {
fn from_error_kind(input: I, kind: nom::error::ErrorKind) -> Self {
Self::single(input, ErrorKind::Nom(kind))
}
fn or(mut self, other: Self) -> Self {
self.errors.extend(other.errors);
self.notes.extend(other.notes);
if let Some(message) = other.message {
if self.message.is_none() {
self.message = Some(message);
}
}
if let Some(help) = other.help {
if self.help.is_none() {
self.help = Some(help);
}
}
self
}
fn append(input: I, kind: nom::error::ErrorKind, mut other: Self) -> Self {
other.errors.push((input, ErrorKind::Nom(kind)));
other
}
}
#[derive(Debug)]
pub enum ErrorKind {
Nom(nom::error::ErrorKind),
Char(char),
Context(&'static str),
Custom(Cow<'static, str>),
}
impl ErrorKind {
pub fn custom(message: impl Into<Cow<'static, str>>) -> Self {
Self::Custom(message.into())
}
}

View file

@ -1,8 +1,24 @@
use nom::{ use nom::{
branch::alt, bytes::complete::{is_not, tag, take_while1}, character::complete::{char, multispace0, one_of, space0, space1}, combinator::{opt, peek}, error::{Error, ErrorKind}, multi::{many0, many1, separated_list0}, sequence::{delimited, pair, preceded, terminated, tuple}, Err, IResult, InputLength branch::alt,
bytes::complete::{is_not, tag, take_while1},
character::complete::{char, multispace0, one_of, space0, space1},
combinator::{opt, peek},
error::context,
multi::{many0, many1, separated_list0},
sequence::{delimited, pair, preceded, terminated, tuple},
InputLength,
}; };
use tracing::debug;
type IResult<I, O> = nom::IResult<I, O, error::Error<I>>;
use error::Error;
use cogs_ast::{Attribute, CodeBlock, Component, Element, HtmlTag}; use cogs_ast::{Attribute, CodeBlock, Component, Element, HtmlTag};
// reexport for cogs crate
#[doc(hidden)]
pub use nom;
pub mod error;
pub fn parse_cog(input: &str) -> IResult<&str, Component> { pub fn parse_cog(input: &str) -> IResult<&str, Component> {
let (input, elements) = parse_consecutive_proper_elements(input)?; let (input, elements) = parse_consecutive_proper_elements(input)?;
@ -18,7 +34,7 @@ pub fn parse_consecutive_proper_elements(input: &str) -> IResult<&str, Vec<Eleme
fn parse_element(input: &str) -> IResult<&str, Element> { fn parse_element(input: &str) -> IResult<&str, Element> {
let (input, _) = multispace0(input)?; let (input, _) = multispace0(input)?;
alt((parse_html, parse_code_block))(input) alt((parse_html, context("code block", parse_code_block)))(input)
} }
fn parse_proper_element(input: &str) -> IResult<&str, Element> { fn parse_proper_element(input: &str) -> IResult<&str, Element> {
@ -28,7 +44,6 @@ fn parse_proper_element(input: &str) -> IResult<&str, Element> {
res res
} }
fn is_valid_tag_name_char(c: char) -> bool { fn is_valid_tag_name_char(c: char) -> bool {
c.is_alphanumeric() || c == '-' c.is_alphanumeric() || c == '-'
} }
@ -53,7 +68,7 @@ fn parse_attribute(input: &str) -> IResult<&str, Attribute> {
let (input, key) = take_while1(is_valid_attr_char)(input)?; let (input, key) = take_while1(is_valid_attr_char)(input)?;
let (input, value) = opt(preceded( let (input, value) = opt(preceded(
tuple((tag("="), space0)), tuple((tag("="), space0)),
delimited(tag("\""), is_not("\""), tag("\"")) delimited(tag("\""), is_not("\""), tag("\"")),
))(input)?; ))(input)?;
let mut resulting_value = None; let mut resulting_value = None;
@ -71,37 +86,31 @@ fn parse_attribute(input: &str) -> IResult<&str, Attribute> {
)) ))
} }
fn parse_attributes(input: &str) -> IResult<&str, Vec<Attribute>> { fn parse_attributes(input: &str) -> IResult<&str, Vec<Attribute>> {
let (input, attrs) = separated_list0( let (input, attrs) =
pair(alt((char(','), char(' '))), space0), separated_list0(pair(alt((char(','), char(' '))), space0), parse_attribute)(input)?;
parse_attribute,
)(input)?;
let (input, _) = space0(input)?; // dump any trailing spaces let (input, _) = space0(input)?; // dump any trailing spaces
// dbg!(&attrs); // dbg!(&attrs);
Ok(( Ok((input, attrs))
input,
attrs
))
} }
fn parse_inside_html_opening_tag(input: &str) -> IResult<&str, HtmlTag> { fn parse_inside_html_opening_tag(input: &str) -> IResult<&str, HtmlTag> {
let (input, tag) = parse_tag_name(input)?; let (input, tag) = parse_tag_name(input)?;
// dbg!(&tag); // dbg!(&tag);
let (input, _) = space0(input)?; let (input, _) = space0(input)?;
let (input, attributes) = parse_attributes(input)?; let (input, attributes) = context("html attributes", parse_attributes)(input)?;
// dbg!(&attributes); // dbg!(&attributes);
Ok(( Ok((
input, input,
HtmlTag{ HtmlTag {
tag: tag.to_string(), tag: tag.to_string(),
attributes, attributes,
content: Vec::new() content: Vec::new(),
} },
)) ))
} }
@ -110,37 +119,34 @@ fn parse_html_opening_tag(input: &str) -> IResult<&str, HtmlTag> {
// dbg!(&tag); // dbg!(&tag);
Ok(( Ok((input, tag))
input,
tag
))
} }
fn parse_html_closing_tag(input: &str) -> IResult<&str, &str> { fn parse_html_closing_tag(input: &str) -> IResult<&str, &str> {
let (input, tag) = delimited(tag("</"), parse_tag_name, char('>'))(input)?; let (input, tag) = delimited(
tag("</"),
context("html tag name", parse_tag_name),
char('>'),
)(input)?;
Ok(( Ok((input, tag))
input,
tag
))
} }
fn parse_text(input: &str) -> IResult<&str, Element> { fn parse_text(input: &str) -> IResult<&str, Element> {
// dbg!(&input); // dbg!(&input);
let mut index = 0; let mut index = 0;
while index < input.len() { while index < input.len() {
let current_slice = &input[index..]; let current_slice = &input[index..];
if peek(parse_element)(current_slice).is_ok() { if peek(parse_element)(current_slice).is_ok() {
// dbg!(&current_slice); // dbg!(&current_slice);
break; break;
} }
if peek(parse_html_opening_tag)(current_slice).is_ok() || if peek(parse_html_opening_tag)(current_slice).is_ok()
peek(parse_html_closing_tag)(current_slice).is_ok() || || peek(parse_html_closing_tag)(current_slice).is_ok()
peek::<_, _, Error<&str>, _>(char('}'))(current_slice).is_ok(){ || peek::<_, _, Error<&str>, _>(char('}'))(current_slice).is_ok()
{
// dbg!(&current_slice); // dbg!(&current_slice);
break; // Stop if any of these parsers match break; // Stop if any of these parsers match
} }
@ -150,7 +156,7 @@ fn parse_text(input: &str) -> IResult<&str, Element> {
if input[0..index].is_empty() { if input[0..index].is_empty() {
// dbg!(&input[0..index]); // dbg!(&input[0..index]);
return Err(Err::Error(Error::new(input, ErrorKind::Eof))); return Err(Error::eof(input));
} }
// dbg!(&input[0..index]); // dbg!(&input[0..index]);
@ -163,10 +169,7 @@ fn parse_html_contents(input: &str) -> IResult<&str, Vec<Element>> {
// dbg!(&out); // dbg!(&out);
Ok(( Ok((input, out))
input,
out
))
} }
fn parse_html(input: &str) -> IResult<&str, Element> { fn parse_html(input: &str) -> IResult<&str, Element> {
@ -177,14 +180,13 @@ fn parse_html(input: &str) -> IResult<&str, Element> {
let (input, close_name) = parse_html_closing_tag(input)?; let (input, close_name) = parse_html_closing_tag(input)?;
if htag.tag != close_name { if htag.tag != close_name {
return Err(Err::Failure(Error::new(input, ErrorKind::Fail))); // Is there a way to give a custom error message? return Err(Error::custom_failure(
input,
format!("expected closing tag `</{}>`, got `</{}>`", htag.tag, close_name),
));
} }
Ok((input, Element::Html(htag)))
Ok((
input,
Element::Html(htag)
))
} }
/* /*
@ -199,21 +201,16 @@ fn parse_code_until_interrupted(input: &str) -> IResult<&str, Element> {
*/ */
fn parse_inside_code_block(input: &str) -> IResult<&str, Vec<Element>> { fn parse_inside_code_block(input: &str) -> IResult<&str, Vec<Element>> {
println!("Attempting inside code block {input}"); debug!("Attempting inside code block {input}");
let (input, elems) = parse_consecutive_proper_elements(input)?; let (input, elems) = parse_consecutive_proper_elements(input)?;
dbg!(&elems); dbg!(&elems);
Ok(( Ok((input, elems))
input,
elems
))
} }
fn parse_code_block(input: &str) -> IResult<&str, Element> { fn parse_code_block(input: &str) -> IResult<&str, Element> {
if input.chars().nth(0) == Some('{') { if input.chars().nth(0) == Some('{') {
println!("Attempting code block on {input}"); debug!("Attempting code block on {input}");
} }
let (input, content) = delimited( let (input, content) = delimited(
char('{'), char('{'),
@ -225,7 +222,7 @@ fn parse_code_block(input: &str) -> IResult<&str, Element> {
input, input,
Element::Block(CodeBlock { Element::Block(CodeBlock {
// is_async: is_async.unwrap_or(false), // is_async: is_async.unwrap_or(false),
content: content content,
}), }),
)) ))
} }

View file

@ -1,13 +0,0 @@
use cogs_parser::parse_cog;
fn main() {
println!("{:#?}", parse_cog("
<body>
<h1>Yo.</h1>
<a src=\"https://www.youtube.com/watch?v=dQw4w9WgXcQ\">Click this</a>
{
println!(\"test\");
<p>More Html</p>
}
</body>"));
}

33
src/diagnostics.rs Normal file
View file

@ -0,0 +1,33 @@
use ariadne::{Label, Source};
use cogs_parser::error::{Error, ErrorKind};
use std::{ops::Range, sync::Arc};
type Span = Range<usize>;
type SpanWithFile = (Arc<str>, Span);
fn add_error(builder: &mut ariadne::ReportBuilder<'static, SpanWithFile>, span: Span, kind: ErrorKind, file: Arc<str>) {
let label = Label::new((file, span));
builder.add_label(match kind {
ErrorKind::Nom(e) => label.with_message(e.description()),
ErrorKind::Char(c) => label.with_message(format!("expected '{c}'")),
ErrorKind::Context(s) => label.with_message(format!("while parsing {s}")),
ErrorKind::Custom(s) => label.with_message(s),
});
}
pub fn nom_diagnostic<'a>(main: &'a str, error: Error<&'a str>, file: &str) {
let file = Arc::<str>::from(file);
let (mut iter, info) = error.resolve_spans(main);
let Some((span, kind)) = iter.next() else {
return;
};
let mut report = ariadne::Report::build(ariadne::ReportKind::Error, (file.clone(), span.clone()));
if let Some(message) = info.message {
report.set_message(message);
}
add_error(&mut report, span, kind, file.clone());
for (span, kind) in iter {
add_error(&mut report, span, kind, file.clone());
}
let _ = report.finish().print((file, Source::from(main)));
}

63
src/lib.rs Normal file
View file

@ -0,0 +1,63 @@
mod diagnostics;
#[cfg(test)]
mod tests;
use tracing::level_filters::LevelFilter;
use tracing_subscriber::{layer::SubscriberExt, util::SubscriberInitExt};
#[doc(hidden)]
pub fn parse_cog(input: String, file: &str) -> eyre::Result<cogs_ast::Component> {
use cogs_parser::nom::Finish;
match cogs_parser::parse_cog(&input).finish() {
Ok((leftover, ast)) => {
if leftover.is_empty() {
Ok(ast)
} else {
Err(eyre::eyre!("Not all input parsed, leftover: {leftover}"))
}
}
Err(error) => {
diagnostics::nom_diagnostic(&input, error, file);
Err(eyre::Report::msg("parsing failed"))
}
}
}
#[doc(hidden)]
pub fn init_tracing() -> eyre::Result<()> {
color_eyre::install()?;
let registry = tracing_subscriber::registry().with(
tracing_subscriber::EnvFilter::builder()
.with_default_directive(LevelFilter::INFO.into())
.from_env_lossy(),
);
fn do_init<
R: tracing::Subscriber
+ SubscriberExt
+ for<'span> tracing_subscriber::registry::LookupSpan<'span>
+ Into<tracing::Dispatch>
+ Sync
+ Send
+ 'static,
>(
registry: R,
) -> eyre::Result<()> {
tracing::subscriber::set_global_default(
registry
.with(tracing_error::ErrorLayer::default())
.with(tracing_subscriber::fmt::layer()),
)
.map_err(Into::into)
}
#[cfg(feature = "tracy")]
{
do_init(registry.with(tracing_tracy::TracyLayer::default()))?;
}
#[cfg(not(feature = "tracy"))]
{
do_init(registry)?;
}
Ok(())
}

View file

@ -1,3 +1,9 @@
fn main() { use cogs::*;
println!("Hello, world!");
fn main() -> eyre::Result<()> {
init_tracing()?;
let ast = parse_cog(include_str!("../tests/1.cog").to_owned(), "tests/1.cog")?;
println!("{ast:#?}");
Ok(())
} }

View file

@ -0,0 +1,6 @@
---
source: src/tests.rs
expression: "cogs_codegen::generate(&ast).unwrap()"
snapshot_kind: text
---
not yet implemented

View file

@ -0,0 +1,79 @@
---
source: src/tests.rs
expression: ast
snapshot_kind: text
---
Component {
elements: [
Html(
HtmlTag {
tag: "body",
attributes: [],
content: [
Html(
HtmlTag {
tag: "h1",
attributes: [],
content: [
Text(
"Yo.",
),
],
},
),
Html(
HtmlTag {
tag: "a",
attributes: [
Attribute {
name: Text(
"src",
),
value: Some(
Text(
"https://www.youtube.com/watch?v=dQw4w9WgXcQ",
),
),
},
],
content: [
Text(
"Click this",
),
],
},
),
Block(
CodeBlock {
content: [
Text(
"println!(\"test\");",
),
Html(
HtmlTag {
tag: "p",
attributes: [],
content: [
Text(
"More Html",
),
],
},
),
Text(
"\n ",
),
],
},
),
Text(
"\n",
),
],
},
),
Text(
"\n",
),
],
}

14
src/tests.rs Normal file
View file

@ -0,0 +1,14 @@
#[test]
fn test_cogs() {
let _ = crate::init_tracing();
let tests = 1..=1;
for test_index in tests {
let name = format!("tests/{}.cog", test_index);
let file = std::fs::read_to_string(&name).unwrap();
let ast = crate::parse_cog(file, &name).unwrap();
insta::with_settings!({ snapshot_suffix => format!("{test_index}") }, {
insta::assert_debug_snapshot!(ast);
insta::assert_snapshot!("codegen", cogs_codegen::generate(&ast).unwrap());
});
}
}

8
tests/1.cog Normal file
View file

@ -0,0 +1,8 @@
<body>
<h1>Yo.</h1>
<a src="https://www.youtube.com/watch?v=dQw4w9WgXcQ">Click this</a>
{
println!("test");
<p>More Html</p>
}
</body>