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Rename sixtyfps-rs-macro to sixtyfps-macros

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Olivier Goffart 2020-10-13 11:10:26 +02:00
parent ba80d6f515
commit a650f29abe
5 changed files with 4 additions and 4 deletions
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api/sixtyfps-rs/sixtyfps-macros/lib.rs Normal file
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/* LICENSE BEGIN
This file is part of the SixtyFPS Project -- https://sixtyfps.io
Copyright (c) 2020 Olivier Goffart <olivier.goffart@sixtyfps.io>
Copyright (c) 2020 Simon Hausmann <simon.hausmann@sixtyfps.io>
SPDX-License-Identifier: GPL-3.0-only
This file is also available under commercial licensing terms.
Please contact info@sixtyfps.io for more information.
LICENSE END */
extern crate proc_macro;
use proc_macro::{Spacing, TokenStream, TokenTree};
use quote::ToTokens;
use sixtyfps_compilerlib::parser::SyntaxKind;
use sixtyfps_compilerlib::*;
fn fill_token_vec(stream: impl Iterator<Item = TokenTree>, vec: &mut Vec<parser::Token>) {
let mut prev_spacing = Spacing::Alone;
for t in stream {
match t {
TokenTree::Ident(i) => {
if let Some(last) = vec.last_mut() {
if last.kind == SyntaxKind::ColorLiteral && last.text.len() == 1 {
last.text = format!("#{}", i).into();
continue;
}
}
vec.push(parser::Token {
kind: SyntaxKind::Identifier,
text: i.to_string().into(),
span: Some(i.span()),
..Default::default()
});
}
TokenTree::Punct(p) => {
let kind = match p.as_char() {
':' => SyntaxKind::Colon,
'=' => {
if let Some(last) = vec.last_mut() {
let kt = match last.kind {
SyntaxKind::Star => Some((SyntaxKind::StarEqual, "*=")),
SyntaxKind::Colon => Some((SyntaxKind::ColonEqual, ":=")),
SyntaxKind::Plus => Some((SyntaxKind::PlusEqual, "+=")),
SyntaxKind::Minus => Some((SyntaxKind::MinusEqual, "-=")),
SyntaxKind::Div => Some((SyntaxKind::DivEqual, "/=")),
SyntaxKind::LAngle => Some((SyntaxKind::LessEqual, "<=")),
SyntaxKind::RAngle => Some((SyntaxKind::GreaterEqual, ">=")),
SyntaxKind::Equal => Some((SyntaxKind::EqualEqual, "==")),
SyntaxKind::Bang => Some((SyntaxKind::NotEqual, "!=")),
_ => None,
};
if let Some((k, t)) = kt {
if prev_spacing == Spacing::Joint {
last.kind = k;
last.text = t.into();
continue;
}
}
}
SyntaxKind::Equal
}
';' => SyntaxKind::Semicolon,
'!' => SyntaxKind::Bang,
'.' => SyntaxKind::Dot,
'+' => SyntaxKind::Plus,
'-' => SyntaxKind::Minus,
'*' => SyntaxKind::Star,
'/' => SyntaxKind::Div,
'<' => SyntaxKind::LAngle,
'>' => {
if let Some(last) = vec.last_mut() {
if last.kind == SyntaxKind::LessEqual && prev_spacing == Spacing::Joint
{
last.kind = SyntaxKind::DoubleArrow;
last.text = "<=>".into();
continue;
} else if last.kind == SyntaxKind::Equal
&& prev_spacing == Spacing::Joint
{
last.kind = SyntaxKind::FatArrow;
last.text = "=>".into();
continue;
}
}
SyntaxKind::RAngle
}
'#' => SyntaxKind::ColorLiteral,
'?' => SyntaxKind::Question,
',' => SyntaxKind::Comma,
'&' => {
// Since the '&' alone does not exist or cannot be part of any other token that &&
// just consider it as '&&' and skip the joint ones. FIXME. do that properly
if let Some(last) = vec.last_mut() {
if last.kind == SyntaxKind::AndAnd && prev_spacing == Spacing::Joint {
continue;
}
}
SyntaxKind::AndAnd
}
'|' => {
// Since the '|' alone does not exist or cannot be part of any other token that ||
// just consider it as '||' and skip the joint ones. FIXME. do that properly
if let Some(last) = vec.last_mut() {
if last.kind == SyntaxKind::OrOr && prev_spacing == Spacing::Joint {
continue;
}
}
SyntaxKind::OrOr
}
'%' => {
// % can only exist after number literal
if let Some(last) = vec.last_mut() {
if last.kind == SyntaxKind::NumberLiteral {
last.text = format!("{}%", last.text).into();
continue;
}
}
SyntaxKind::Error
}
'$' => SyntaxKind::Dollar,
_ => SyntaxKind::Error,
};
prev_spacing = p.spacing();
vec.push(parser::Token {
kind,
text: p.to_string().into(),
span: Some(p.span()),
..Default::default()
});
}
TokenTree::Literal(l) => {
let s = l.to_string();
// Why can't the rust API give me the type of the literal
let f = s.chars().next().unwrap();
let kind = if f == '"' {
SyntaxKind::StringLiteral
} else if f.is_digit(10) {
if let Some(last) = vec.last_mut() {
if last.kind == SyntaxKind::ColorLiteral && last.text.len() == 1 {
last.text = format!("#{}", s).into();
continue;
}
}
SyntaxKind::NumberLiteral
} else {
SyntaxKind::Error
};
vec.push(parser::Token {
kind,
text: s.into(),
span: Some(l.span()),
..Default::default()
});
}
TokenTree::Group(g) => {
use proc_macro::Delimiter::*;
use SyntaxKind::*;
let (l, r, sl, sr) = match g.delimiter() {
Parenthesis => (LParent, RParent, "(", ")"),
Brace => (LBrace, RBrace, "{", "}"),
Bracket => (LBracket, RBracket, "[", "]"),
None => todo!(),
};
vec.push(parser::Token {
kind: l,
text: sl.into(),
span: Some(g.span()), // span_open is not stable
..Default::default()
});
fill_token_vec(g.stream().into_iter(), vec);
vec.push(parser::Token {
kind: r,
text: sr.into(),
span: Some(g.span()), // span_clone is not stable
..Default::default()
});
}
}
}
}
fn extract_include_paths(
mut stream: proc_macro::token_stream::IntoIter,
) -> (impl Iterator<Item = TokenTree>, Vec<std::path::PathBuf>) {
let mut include_paths = Vec::new();
let mut remaining_stream = stream.clone();
// parse #[include_path="../foo/bar/baz"]
// ### support multiple occurrences
match (stream.next(), stream.next()) {
(Some(TokenTree::Punct(p)), Some(TokenTree::Group(group)))
if p.as_char() == '#' && group.delimiter() == proc_macro::Delimiter::Bracket =>
{
let mut attr_stream = group.stream().into_iter();
match (attr_stream.next(), attr_stream.next(), attr_stream.next()) {
(
Some(TokenTree::Ident(include_ident)),
Some(TokenTree::Punct(equal_punct)),
Some(TokenTree::Literal(path)),
) if include_ident.to_string() == "include_path"
&& equal_punct.as_char() == '=' =>
{
let path_with_quotes = path.to_string();
let path_with_quotes_stripped = if path_with_quotes.starts_with("r") {
let hash_removed = path_with_quotes[1..].trim_matches('#');
hash_removed.strip_prefix("\"").unwrap().strip_suffix("\"").unwrap()
} else {
// FIXME: unescape
path_with_quotes.trim_matches('\"')
};
include_paths.push(path_with_quotes_stripped.into());
remaining_stream = stream;
}
_ => (),
}
}
_ => (),
}
(remaining_stream, include_paths)
}
/// This macro allows you to use the `.60` design markup language inline in Rust code. Within the braces of the macro
/// you can use place `.60` code and the named exported components will be available for instantiation.
#[proc_macro]
pub fn sixtyfps(stream: TokenStream) -> TokenStream {
let token_iter = stream.into_iter();
let (token_iter, include_paths) = extract_include_paths(token_iter);
let mut tokens = vec![];
fill_token_vec(token_iter, &mut tokens);
let (syntax_node, mut diag) = parser::parse_tokens(tokens.clone());
let source_file = if let Some(cargo_manifest) = std::env::var_os("CARGO_MANIFEST_DIR") {
let mut path: std::path::PathBuf = cargo_manifest.into();
path.push("Cargo.toml");
diag.current_path = std::rc::Rc::new(path);
Some(diag.current_path.clone())
} else {
None
};
let syntax_node = parser::SyntaxNodeWithSourceFile { node: syntax_node, source_file };
//println!("{:#?}", syntax_node);
let compiler_config =
CompilerConfiguration { include_paths: &include_paths, ..Default::default() };
let (root_component, mut diag) = compile_syntax_node(syntax_node, diag, &compiler_config);
//println!("{:#?}", tree);
if diag.has_error() {
diag.map_offsets_to_span(&tokens);
return diag.into_token_stream().into();
}
let result = generator::rust::generate(&root_component, &mut diag);
result
.unwrap_or_else(|| {
diag.map_offsets_to_span(&tokens);
diag.into_token_stream()
})
.into()
}