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Bump syn/quote in style_derive
This commit is contained in:
Bastien Orivel
parent
cf6330b6c1
commit
9faa579c89
12 changed files with 302 additions and 338 deletions
45
Cargo.lock
generated
45
Cargo.lock
generated
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@ -572,32 +572,31 @@ dependencies = [
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[[package]]
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name = "darling"
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version = "0.2.0"
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version = "0.3.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"darling_core 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
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"darling_macro 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
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"darling_core 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
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"darling_macro 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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name = "darling_core"
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version = "0.2.0"
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version = "0.3.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"ident_case 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
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"lazy_static 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
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"quote 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
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"syn 0.11.11 (registry+https://github.com/rust-lang/crates.io-index)",
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"quote 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
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"syn 0.12.12 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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name = "darling_macro"
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version = "0.2.0"
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version = "0.3.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"darling_core 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
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"quote 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
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"syn 0.11.11 (registry+https://github.com/rust-lang/crates.io-index)",
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"darling_core 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
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"quote 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
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"syn 0.12.12 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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@ -2951,10 +2950,10 @@ dependencies = [
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name = "style_derive"
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version = "0.0.1"
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dependencies = [
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"darling 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
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"quote 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
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"syn 0.11.11 (registry+https://github.com/rust-lang/crates.io-index)",
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"synstructure 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
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"darling 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
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"quote 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
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"syn 0.12.12 (registry+https://github.com/rust-lang/crates.io-index)",
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"synstructure 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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@ -3049,15 +3048,6 @@ dependencies = [
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"unicode-xid 0.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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name = "synstructure"
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version = "0.5.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"quote 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
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"syn 0.11.11 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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name = "synstructure"
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version = "0.7.0"
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@ -3605,9 +3595,9 @@ dependencies = [
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"checksum core-text 9.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2bd581c37283d0c23311d179aefbb891f2324ee0405da58a26e8594ab76e5748"
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"checksum cssparser 0.23.2 (registry+https://github.com/rust-lang/crates.io-index)" = "8a807ac3ab7a217829c2a3b65732b926b2befe6a35f33b4bf8b503692430f223"
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"checksum cssparser-macros 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "079adec4af52bb5275eadd004292028c79eb3c5f5b4ee8086a36d4197032f6df"
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"checksum darling 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "9861a8495606435477df581bc858ccf15a3469747edf175b94a4704fd9aaedac"
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"checksum darling_core 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1486a8b00b45062c997f767738178b43219133dd0c8c826cb811e60563810821"
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"checksum darling_macro 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8a86ec160aa0c3dd492dd4a14ec8104ad8f1a9400a820624db857998cc1f80f9"
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"checksum darling 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d3effd06d4057f275cb7858889f4952920bab78dd8ff0f6e7dfe0c8d2e67ed89"
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"checksum darling_core 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "167dd3e235c2f1da16a635c282630452cdf49191eb05711de1bcd1d3d5068c00"
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"checksum darling_macro 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c53edaba455f6073a10c27c72440860eb3f60444f8c8660a391032eeae744d82"
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"checksum dbghelp-sys 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "97590ba53bcb8ac28279161ca943a924d1fd4a8fb3fa63302591647c4fc5b850"
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"checksum dbus 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)" = "4aee01fb76ada3e5e7ca642ea6664ebf7308a810739ca2aca44909a1191ac254"
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"checksum debug_unreachable 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "9a032eac705ca39214d169f83e3d3da290af06d8d1d344d1baad2fd002dca4b3"
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@ -3788,7 +3778,6 @@ dependencies = [
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"checksum syn 0.11.11 (registry+https://github.com/rust-lang/crates.io-index)" = "d3b891b9015c88c576343b9b3e41c2c11a51c219ef067b264bd9c8aa9b441dad"
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"checksum syn 0.12.12 (registry+https://github.com/rust-lang/crates.io-index)" = "9e1c669ed757c0ebd04337f6a5bb972d05e0c08fe2540dd3ee3dd9e4daf1604c"
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"checksum synom 0.11.3 (registry+https://github.com/rust-lang/crates.io-index)" = "a393066ed9010ebaed60b9eafa373d4b1baac186dd7e008555b0f702b51945b6"
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"checksum synstructure 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "cf318c34a2f8381a4f3d4db2c91b45bca2b1cd8cbe56caced900647be164800c"
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"checksum synstructure 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "010366096045d8250555904c58da03377289e7f4b2ce7a5b1027e2b532f41000"
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"checksum tendril 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "9de21546595a0873061940d994bbbc5c35f024ae4fd61ec5c5b159115684f508"
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"checksum termion 1.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "689a3bdfaab439fd92bc87df5c4c78417d3cbe537487274e9b0b2dce76e92096"
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@ -10,7 +10,7 @@ path = "lib.rs"
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proc-macro = true
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[dependencies]
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darling = "0.2"
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quote = "0.3.15"
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syn = { version = "0.11", features = ["visit"] }
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synstructure = "0.5.2"
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darling = "0.3"
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quote = "0.4.2"
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syn = { version = "0.12.12", features = ["visit"] }
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synstructure = "0.7"
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@ -5,41 +5,41 @@
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use cg;
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use quote::Tokens;
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use syn::{DeriveInput, Path};
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use synstructure;
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pub fn derive(input: DeriveInput) -> Tokens {
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let name = &input.ident;
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let trait_path = &["values", "animated", "Animate"];
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let trait_path = parse_quote!(values::animated::Animate);
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let (impl_generics, ty_generics, mut where_clause) =
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cg::trait_parts(&input, trait_path);
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cg::trait_parts(&input, &trait_path);
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let input_attrs = cg::parse_input_attrs::<AnimateInputAttrs>(&input);
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let variants = cg::variants(&input);
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let mut match_body = quote!();
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let mut append_error_clause = variants.len() > 1;
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match_body.append_all(variants.iter().flat_map(|variant| {
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let variant_attrs = cg::parse_variant_attrs::<AnimationVariantAttrs>(variant);
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let s = synstructure::Structure::new(&input);
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let mut append_error_clause = s.variants().len() > 1;
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let mut match_body = s.variants().iter().fold(quote!(), |body, variant| {
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let variant_attrs = cg::parse_variant_attrs::<AnimationVariantAttrs>(&variant.ast());
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if variant_attrs.error {
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append_error_clause = true;
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return None;
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return body;
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}
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let name = cg::variant_ctor(&input, variant);
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let (this_pattern, this_info) = cg::ref_pattern(&name, variant, "this");
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let (other_pattern, other_info) = cg::ref_pattern(&name, variant, "other");
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let (result_value, result_info) = cg::value(&name, variant, "result");
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let (this_pattern, this_info) = cg::ref_pattern(&variant, "this");
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let (other_pattern, other_info) = cg::ref_pattern(&variant, "other");
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let (result_value, result_info) = cg::value(&variant, "result");
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let mut computations = quote!();
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let iter = result_info.iter().zip(this_info.iter().zip(&other_info));
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computations.append_all(iter.map(|(result, (this, other))| {
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let field_attrs = cg::parse_field_attrs::<AnimationFieldAttrs>(&result.field);
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let field_attrs = cg::parse_field_attrs::<AnimationFieldAttrs>(&result.ast());
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if field_attrs.constant {
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if cg::is_parameterized(&result.field.ty, where_clause.params, None) {
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where_clause.inner.predicates.push(cg::where_predicate(
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result.field.ty.clone(),
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&["std", "cmp", "PartialEq"],
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if cg::is_parameterized(&result.ast().ty, &where_clause.params, None) {
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where_clause.add_predicate(cg::where_predicate(
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result.ast().ty.clone(),
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&parse_quote!(std::cmp::PartialEq),
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None,
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));
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where_clause.inner.predicates.push(cg::where_predicate(
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result.field.ty.clone(),
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&["std", "clone", "Clone"],
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where_clause.add_predicate(cg::where_predicate(
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result.ast().ty.clone(),
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&parse_quote!(std::clone::Clone),
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None,
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));
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}
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@ -50,28 +50,29 @@ pub fn derive(input: DeriveInput) -> Tokens {
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let #result = ::std::clone::Clone::clone(#this);
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}
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} else {
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where_clause.add_trait_bound(&result.field.ty);
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where_clause.add_trait_bound(&result.ast().ty);
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quote! {
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let #result =
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::values::animated::Animate::animate(#this, #other, procedure)?;
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}
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}
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}));
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Some(quote! {
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quote! {
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#body
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(&#this_pattern, &#other_pattern) => {
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#computations
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Ok(#result_value)
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}
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})
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}));
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}
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});
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if append_error_clause {
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if let Some(fallback) = input_attrs.fallback {
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match_body.append(quote! {
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match_body.append_all(quote! {
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(this, other) => #fallback(this, other, procedure)
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});
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} else {
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match_body.append(quote! { _ => Err(()) });
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match_body.append_all(quote! { _ => Err(()) });
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}
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}
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@ -4,22 +4,21 @@
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use darling::{FromDeriveInput, FromField, FromVariant};
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use quote::{ToTokens, Tokens};
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use std::borrow::Cow;
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use std::collections::HashSet;
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use std::iter;
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use syn::{self, AngleBracketedParameterData, Body, DeriveInput, Field, Ident};
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use syn::{ImplGenerics, Path, PathParameters, PathSegment, PolyTraitRef};
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use syn::{QSelf, TraitBoundModifier, Ty, TyGenerics, TyParam, TyParamBound};
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use syn::{TypeBinding, Variant, WhereBoundPredicate, WherePredicate};
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use syn::visit::{self, Visitor};
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use synstructure::{self, BindOpts, BindStyle, BindingInfo};
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use syn::{self, DeriveInput, Field, Ident};
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use syn::{ImplGenerics, Path, PathArguments, PathSegment, AngleBracketedGenericArguments, GenericParam};
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use syn::{QSelf, Type, TypeGenerics, TypeParam};
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use syn::{TypeSlice, TypeArray, TypeTuple, TypePath, TypeParen};
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use syn::{Variant, WherePredicate, GenericArgument, Binding};
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use syn::visit::{self, Visit};
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use synstructure::{self, BindingInfo, BindStyle, VariantAst, VariantInfo};
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pub struct WhereClause<'input, 'path> {
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pub inner: syn::WhereClause,
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pub params: &'input [TyParam],
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trait_path: &'path [&'path str],
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trait_output: Option<&'path str>,
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bounded_types: HashSet<Ty>,
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pub inner: Option<syn::WhereClause>,
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pub params: Vec<&'input TypeParam>,
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trait_path: &'path Path,
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trait_output: Option<Ident>,
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bounded_types: HashSet<Type>,
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}
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impl<'input, 'path> ToTokens for WhereClause<'input, 'path> {
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@ -29,14 +28,13 @@ impl<'input, 'path> ToTokens for WhereClause<'input, 'path> {
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}
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impl<'input, 'path> WhereClause<'input, 'path> {
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pub fn add_trait_bound(&mut self, ty: &Ty) {
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pub fn add_trait_bound(&mut self, ty: &Type) {
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let trait_path = self.trait_path;
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let params = self.params;
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let mut found = self.trait_output.map(|_| HashSet::new());
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if self.bounded_types.contains(&ty) {
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return;
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}
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if !is_parameterized(&ty, params, found.as_mut()) {
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if !is_parameterized(&ty, &self.params, found.as_mut()) {
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return;
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}
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self.bounded_types.insert(ty.clone());
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@ -44,19 +42,19 @@ impl<'input, 'path> WhereClause<'input, 'path> {
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let output = if let Some(output) = self.trait_output {
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output
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} else {
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self.inner.predicates.push(where_predicate(ty.clone(), trait_path, None));
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self.add_predicate(where_predicate(ty.clone(), trait_path, None));
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return;
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};
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if let Ty::Path(None, ref path) = *ty {
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if let Type::Path(syn::TypePath { ref path, .. }) = *ty {
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if path_to_ident(path).is_some() {
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self.inner.predicates.push(where_predicate(ty.clone(), trait_path, None));
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self.add_predicate(where_predicate(ty.clone(), trait_path, None));
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return;
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}
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}
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let output_type = map_type_params(ty, params, &mut |ident| {
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let ty = Ty::Path(None, ident.clone().into());
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let output_type = map_type_params(ty, &self.params, &mut |ident| {
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let ty = Type::Path(syn::TypePath { qself: None, path: ident.clone().into() });
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fmap_output_type(ty, trait_path, output)
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});
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@ -66,20 +64,29 @@ impl<'input, 'path> WhereClause<'input, 'path> {
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Some((output, output_type)),
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);
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self.inner.predicates.push(pred);
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self.add_predicate(pred);
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if let Some(found) = found {
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for ident in found {
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let ty = Ty::Path(None, ident.into());
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let ty = Type::Path(syn::TypePath { qself: None, path: ident.into() });
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if !self.bounded_types.contains(&ty) {
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self.bounded_types.insert(ty.clone());
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self.inner.predicates.push(
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self.add_predicate(
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where_predicate(ty, trait_path, None),
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);
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};
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}
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}
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}
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pub fn add_predicate(&mut self, pred: WherePredicate) {
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if let Some(ref mut inner) = self.inner {
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inner.predicates.push(pred);
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} else {
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self.inner = Some(parse_quote!(where));
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self.add_predicate(pred);
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}
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}
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}
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pub fn fmap_match<F>(
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|
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@ -90,71 +97,77 @@ pub fn fmap_match<F>(
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where
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F: FnMut(BindingInfo) -> Tokens,
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{
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synstructure::each_variant(input, &bind_style.into(), |fields, variant| {
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let name = variant_ctor(input, variant);
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let (mapped, mapped_fields) = value(&name, variant, "mapped");
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let fields_pairs = fields.into_iter().zip(mapped_fields);
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let mut s = synstructure::Structure::new(input);
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s.variants_mut().iter_mut().for_each(|v| { v.bind_with(|_| bind_style); });
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s.each_variant(|variant| {
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let (mapped, mapped_fields) = value(variant, "mapped");
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let fields_pairs = variant.bindings().into_iter().zip(mapped_fields);
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let mut computations = quote!();
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computations.append_all(fields_pairs.map(|(field, mapped_field)| {
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let expr = f(field);
|
||||
let expr = f(field.clone());
|
||||
quote! { let #mapped_field = #expr; }
|
||||
}));
|
||||
computations.append(mapped);
|
||||
computations.append_all(mapped);
|
||||
Some(computations)
|
||||
})
|
||||
}
|
||||
|
||||
fn fmap_output_type(
|
||||
ty: Ty,
|
||||
trait_path: &[&str],
|
||||
trait_output: &str,
|
||||
) -> Ty {
|
||||
Ty::Path(
|
||||
Some(QSelf {
|
||||
ty: Box::new(ty),
|
||||
position: trait_path.len(),
|
||||
}),
|
||||
path(trait_path.iter().chain(iter::once(&trait_output))),
|
||||
)
|
||||
ty: Type,
|
||||
trait_path: &Path,
|
||||
trait_output: Ident,
|
||||
) -> Type {
|
||||
parse_quote!(<#ty as ::#trait_path>::#trait_output)
|
||||
}
|
||||
|
||||
pub fn fmap_trait_parts<'input, 'path>(
|
||||
input: &'input DeriveInput,
|
||||
trait_path: &'path [&'path str],
|
||||
trait_output: &'path str,
|
||||
) -> (ImplGenerics<'input>, TyGenerics<'input>, WhereClause<'input, 'path>, Path) {
|
||||
trait_path: &'path Path,
|
||||
trait_output: Ident,
|
||||
) -> (ImplGenerics<'input>, TypeGenerics<'input>, WhereClause<'input, 'path>, Path) {
|
||||
let (impl_generics, ty_generics, mut where_clause) = trait_parts(input, trait_path);
|
||||
where_clause.trait_output = Some(trait_output);
|
||||
let output_ty = PathSegment {
|
||||
ident: input.ident.clone(),
|
||||
parameters: PathParameters::AngleBracketed(AngleBracketedParameterData {
|
||||
lifetimes: input.generics.lifetimes.iter().map(|l| l.lifetime.clone()).collect(),
|
||||
types: input.generics.ty_params.iter().map(|ty| {
|
||||
fmap_output_type(
|
||||
Ty::Path(None, ty.ident.clone().into()),
|
||||
trait_path,
|
||||
trait_output,
|
||||
)
|
||||
arguments: PathArguments::AngleBracketed(AngleBracketedGenericArguments {
|
||||
args: input.generics.params.iter().map(|arg| {
|
||||
match arg {
|
||||
&GenericParam::Lifetime(ref data) => GenericArgument::Lifetime(data.lifetime.clone()),
|
||||
&GenericParam::Type(ref data) => {
|
||||
let ident = data.ident;
|
||||
GenericArgument::Type(
|
||||
fmap_output_type(
|
||||
parse_quote!(#ident),
|
||||
trait_path,
|
||||
trait_output
|
||||
)
|
||||
)
|
||||
},
|
||||
ref arg => panic!("arguments {:?} cannot be mapped yet", arg)
|
||||
}
|
||||
}).collect(),
|
||||
.. Default::default()
|
||||
}),
|
||||
}.into();
|
||||
(impl_generics, ty_generics, where_clause, output_ty)
|
||||
colon2_token: Default::default(),
|
||||
gt_token: Default::default(),
|
||||
lt_token: Default::default(),
|
||||
|
||||
})
|
||||
};
|
||||
(impl_generics, ty_generics, where_clause, output_ty.into())
|
||||
}
|
||||
|
||||
pub fn is_parameterized(
|
||||
ty: &Ty,
|
||||
params: &[TyParam],
|
||||
ty: &Type,
|
||||
params: &[&TypeParam],
|
||||
found: Option<&mut HashSet<Ident>>,
|
||||
) -> bool {
|
||||
struct IsParameterized<'a, 'b> {
|
||||
params: &'a [TyParam],
|
||||
params: &'a [&'a TypeParam],
|
||||
has_free: bool,
|
||||
found: Option<&'b mut HashSet<Ident>>,
|
||||
}
|
||||
|
||||
impl<'a, 'b> Visitor for IsParameterized<'a, 'b> {
|
||||
fn visit_path(&mut self, path: &Path) {
|
||||
impl<'a, 'b, 'ast> Visit<'ast> for IsParameterized<'a, 'b> {
|
||||
fn visit_path(&mut self, path: &'ast Path) {
|
||||
if let Some(ident) = path_to_ident(path) {
|
||||
if self.params.iter().any(|param| param.ident == ident) {
|
||||
self.has_free = true;
|
||||
|
|
@ -163,100 +176,104 @@ pub fn is_parameterized(
|
|||
}
|
||||
}
|
||||
}
|
||||
visit::walk_path(self, path);
|
||||
visit::visit_path(self, path);
|
||||
}
|
||||
}
|
||||
|
||||
let mut visitor = IsParameterized { params, has_free: false, found };
|
||||
visitor.visit_ty(ty);
|
||||
visitor.visit_type(ty);
|
||||
visitor.has_free
|
||||
}
|
||||
|
||||
pub fn map_type_params<F>(ty: &Ty, params: &[TyParam], f: &mut F) -> Ty
|
||||
pub fn map_type_params<F>(ty: &Type, params: &[&TypeParam], f: &mut F) -> Type
|
||||
where
|
||||
F: FnMut(&Ident) -> Ty,
|
||||
F: FnMut(&Ident) -> Type,
|
||||
{
|
||||
match *ty {
|
||||
Ty::Slice(ref ty) => Ty::Slice(Box::new(map_type_params(ty, params, f))),
|
||||
Ty::Array(ref ty, ref expr) => {
|
||||
Ty::Array(Box::new(map_type_params(ty, params, f)), expr.clone())
|
||||
Type::Slice(ref inner) => {
|
||||
Type::from(TypeSlice { elem: Box::new(map_type_params(&inner.elem, params, f)), ..inner.clone() })
|
||||
},
|
||||
Ty::Never => Ty::Never,
|
||||
Ty::Tup(ref items) => {
|
||||
Ty::Tup(items.iter().map(|ty| map_type_params(ty, params, f)).collect())
|
||||
Type::Array(ref inner) => { //ref ty, ref expr) => {
|
||||
Type::from(TypeArray { elem: Box::new(map_type_params(&inner.elem, params, f)), ..inner.clone() })
|
||||
},
|
||||
Ty::Path(None, ref path) => {
|
||||
ref ty @ Type::Never(_) => ty.clone(),
|
||||
Type::Tuple(ref inner) => {
|
||||
Type::from(
|
||||
TypeTuple {
|
||||
elems: inner.elems.iter().map(|ty| map_type_params(&ty, params, f)).collect(),
|
||||
..inner.clone()
|
||||
}
|
||||
)
|
||||
},
|
||||
Type::Path(TypePath { qself: None, ref path }) => {
|
||||
if let Some(ident) = path_to_ident(path) {
|
||||
if params.iter().any(|param| param.ident == ident) {
|
||||
return f(ident);
|
||||
}
|
||||
}
|
||||
Ty::Path(None, map_type_params_in_path(path, params, f))
|
||||
Type::from(TypePath { qself: None, path: map_type_params_in_path(path, params, f) })
|
||||
}
|
||||
Ty::Path(ref qself, ref path) => {
|
||||
Ty::Path(
|
||||
qself.as_ref().map(|qself| {
|
||||
Type::Path(TypePath { ref qself, ref path }) => {
|
||||
Type::from(TypePath {
|
||||
qself: qself.as_ref().map(|qself| {
|
||||
QSelf {
|
||||
ty: Box::new(map_type_params(&qself.ty, params, f)),
|
||||
position: qself.position,
|
||||
..qself.clone()
|
||||
}
|
||||
}),
|
||||
map_type_params_in_path(path, params, f),
|
||||
)
|
||||
path: map_type_params_in_path(path, params, f),
|
||||
})
|
||||
},
|
||||
Type::Paren(ref inner) => {
|
||||
Type::from(TypeParen { elem: Box::new(map_type_params(&inner.elem, params, f)), ..inner.clone() })
|
||||
},
|
||||
Ty::Paren(ref ty) => Ty::Paren(Box::new(map_type_params(ty, params, f))),
|
||||
ref ty => panic!("type {:?} cannot be mapped yet", ty),
|
||||
}
|
||||
}
|
||||
|
||||
fn map_type_params_in_path<F>(path: &Path, params: &[TyParam], f: &mut F) -> Path
|
||||
fn map_type_params_in_path<F>(path: &Path, params: &[&TypeParam], f: &mut F) -> Path
|
||||
where
|
||||
F: FnMut(&Ident) -> Ty,
|
||||
F: FnMut(&Ident) -> Type,
|
||||
{
|
||||
Path {
|
||||
global: path.global,
|
||||
leading_colon: path.leading_colon,
|
||||
segments: path.segments.iter().map(|segment| {
|
||||
PathSegment {
|
||||
ident: segment.ident.clone(),
|
||||
parameters: match segment.parameters {
|
||||
PathParameters::AngleBracketed(ref data) => {
|
||||
PathParameters::AngleBracketed(AngleBracketedParameterData {
|
||||
lifetimes: data.lifetimes.clone(),
|
||||
types: data.types.iter().map(|ty| {
|
||||
map_type_params(ty, params, f)
|
||||
}).collect(),
|
||||
bindings: data.bindings.iter().map(|binding| {
|
||||
TypeBinding {
|
||||
ident: binding.ident.clone(),
|
||||
ty: map_type_params(&binding.ty, params, f),
|
||||
arguments: match segment.arguments {
|
||||
PathArguments::AngleBracketed(ref data) => {
|
||||
PathArguments::AngleBracketed(AngleBracketedGenericArguments {
|
||||
args: data.args.iter().map(|arg| {
|
||||
match arg {
|
||||
ty @ &GenericArgument::Lifetime(_) => ty.clone(),
|
||||
&GenericArgument::Type(ref data) => {
|
||||
GenericArgument::Type(map_type_params(data, params, f))
|
||||
},
|
||||
&GenericArgument::Binding(ref data) => GenericArgument::Binding(Binding {
|
||||
ty: map_type_params(&data.ty, params, f),
|
||||
..data.clone()
|
||||
}),
|
||||
ref arg => panic!("arguments {:?} cannot be mapped yet", arg)
|
||||
}
|
||||
}).collect(),
|
||||
..data.clone()
|
||||
})
|
||||
},
|
||||
ref arg @ PathArguments::None => arg.clone(),
|
||||
ref parameters => {
|
||||
panic!("parameters {:?} cannot be mapped yet", parameters)
|
||||
},
|
||||
}
|
||||
},
|
||||
}
|
||||
}).collect(),
|
||||
}
|
||||
}
|
||||
|
||||
pub fn path<S>(segments: S) -> Path
|
||||
where
|
||||
S: IntoIterator,
|
||||
<S as IntoIterator>::Item: AsRef<str>,
|
||||
{
|
||||
Path {
|
||||
global: true,
|
||||
segments: segments.into_iter().map(|s| s.as_ref().into()).collect(),
|
||||
}
|
||||
}
|
||||
|
||||
fn path_to_ident(path: &Path) -> Option<&Ident> {
|
||||
match *path {
|
||||
Path { global: false, ref segments } if segments.len() == 1 => {
|
||||
if segments[0].parameters.is_empty() {
|
||||
Path { leading_colon: None, ref segments } if segments.len() == 1 => {
|
||||
if segments[0].arguments.is_empty() {
|
||||
Some(&segments[0].ident)
|
||||
} else {
|
||||
None
|
||||
|
|
@ -286,36 +303,41 @@ where
|
|||
}
|
||||
}
|
||||
|
||||
pub fn parse_variant_attrs<A>(variant: &Variant) -> A
|
||||
pub fn parse_variant_attrs<A>(variant: &VariantAst) -> A
|
||||
where
|
||||
A: FromVariant,
|
||||
{
|
||||
match A::from_variant(variant) {
|
||||
let v = Variant {
|
||||
ident: *variant.ident,
|
||||
attrs: variant.attrs.to_vec(),
|
||||
fields: variant.fields.clone(),
|
||||
discriminant: variant.discriminant.clone(),
|
||||
};
|
||||
match A::from_variant(&v) {
|
||||
Ok(attrs) => attrs,
|
||||
Err(e) => panic!("failed to parse variant attributes: {}", e),
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
pub fn ref_pattern<'a>(
|
||||
name: &Ident,
|
||||
variant: &'a Variant,
|
||||
variant: &'a VariantInfo,
|
||||
prefix: &str,
|
||||
) -> (Tokens, Vec<BindingInfo<'a>>) {
|
||||
synstructure::match_pattern(
|
||||
&name,
|
||||
&variant.data,
|
||||
&BindOpts::with_prefix(BindStyle::Ref, prefix.to_owned()),
|
||||
)
|
||||
let mut v = variant.clone();
|
||||
v.bind_with(|_| BindStyle::Ref);
|
||||
v.bindings_mut().iter_mut().for_each(|b| { b.binding = Ident::from(format!("{}_{}", b.binding, prefix)) });
|
||||
(v.pat(), v.bindings().iter().cloned().collect())
|
||||
}
|
||||
|
||||
pub fn trait_parts<'input, 'path>(
|
||||
input: &'input DeriveInput,
|
||||
trait_path: &'path [&'path str],
|
||||
) -> (ImplGenerics<'input>, TyGenerics<'input>, WhereClause<'input, 'path>) {
|
||||
trait_path: &'path Path,
|
||||
) -> (ImplGenerics<'input>, TypeGenerics<'input>, WhereClause<'input, 'path>) {
|
||||
let (impl_generics, ty_generics, where_clause) = input.generics.split_for_impl();
|
||||
let where_clause = WhereClause {
|
||||
inner: where_clause.clone(),
|
||||
params: &input.generics.ty_params,
|
||||
inner: where_clause.cloned(),
|
||||
params: input.generics.type_params().into_iter().collect::<Vec<&TypeParam>>(),
|
||||
trait_path,
|
||||
trait_output: None,
|
||||
bounded_types: HashSet::new()
|
||||
|
|
@ -323,88 +345,35 @@ pub fn trait_parts<'input, 'path>(
|
|||
(impl_generics, ty_generics, where_clause)
|
||||
}
|
||||
|
||||
fn trait_ref(path: &[&str], output: Option<(&str, Ty)>) -> Path {
|
||||
let (name, parent) = path.split_last().unwrap();
|
||||
let last_segment = PathSegment {
|
||||
ident: (*name).into(),
|
||||
parameters: PathParameters::AngleBracketed(
|
||||
AngleBracketedParameterData {
|
||||
bindings: output.into_iter().map(|(param, ty)| {
|
||||
TypeBinding { ident: param.into(), ty }
|
||||
}).collect(),
|
||||
.. Default::default()
|
||||
}
|
||||
)
|
||||
fn trait_ref(path: &Path, output: Option<(Ident, Type)>) -> Path {
|
||||
let segments = path.segments.iter().collect::<Vec<&PathSegment>>();
|
||||
let (name, parent) = segments.split_last().unwrap();
|
||||
|
||||
let last_segment: PathSegment = if let Some((param, ty)) = output {
|
||||
parse_quote!(#name<#param = #ty>)
|
||||
} else {
|
||||
parse_quote!(#name)
|
||||
};
|
||||
Path {
|
||||
global: true,
|
||||
segments: {
|
||||
parent
|
||||
.iter()
|
||||
.cloned()
|
||||
.map(Into::into)
|
||||
.chain(iter::once(last_segment))
|
||||
.collect()
|
||||
},
|
||||
}
|
||||
parse_quote!(::#(#parent::)*#last_segment)
|
||||
}
|
||||
|
||||
pub fn value<'a>(
|
||||
name: &Ident,
|
||||
variant: &'a Variant,
|
||||
variant: &'a VariantInfo,
|
||||
prefix: &str,
|
||||
) -> (Tokens, Vec<BindingInfo<'a>>) {
|
||||
synstructure::match_pattern(
|
||||
&name,
|
||||
&variant.data,
|
||||
&BindOpts::with_prefix(BindStyle::Move, prefix.to_owned()),
|
||||
)
|
||||
}
|
||||
|
||||
pub fn variant_ctor<'a>(
|
||||
input: &'a DeriveInput,
|
||||
variant: &Variant,
|
||||
) -> Cow<'a, Ident> {
|
||||
match input.body {
|
||||
Body::Struct(_) => Cow::Borrowed(&input.ident),
|
||||
Body::Enum(_) => {
|
||||
Cow::Owned(Ident::from(
|
||||
format!("{}::{}", input.ident, variant.ident),
|
||||
))
|
||||
},
|
||||
}
|
||||
}
|
||||
|
||||
pub fn variants(input: &DeriveInput) -> Cow<[Variant]> {
|
||||
match input.body {
|
||||
Body::Enum(ref variants) => (&**variants).into(),
|
||||
Body::Struct(ref data) => {
|
||||
vec![Variant {
|
||||
ident: input.ident.clone(),
|
||||
attrs: input.attrs.clone(),
|
||||
data: data.clone(),
|
||||
discriminant: None,
|
||||
}].into()
|
||||
},
|
||||
}
|
||||
let mut v = variant.clone();
|
||||
v.bindings_mut().iter_mut().for_each(|b| { b.binding = Ident::from(format!("{}_{}", b.binding, prefix)) });
|
||||
v.bind_with(|_| BindStyle::Move);
|
||||
(v.pat(), v.bindings().iter().cloned().collect())
|
||||
}
|
||||
|
||||
pub fn where_predicate(
|
||||
bounded_ty: Ty,
|
||||
trait_path: &[&str],
|
||||
trait_output: Option<(&str, Ty)>,
|
||||
bounded_ty: Type,
|
||||
trait_path: &Path,
|
||||
trait_output: Option<(Ident, Type)>,
|
||||
) -> WherePredicate {
|
||||
WherePredicate::BoundPredicate(WhereBoundPredicate {
|
||||
bound_lifetimes: vec![],
|
||||
bounded_ty,
|
||||
bounds: vec![TyParamBound::Trait(
|
||||
PolyTraitRef {
|
||||
bound_lifetimes: vec![],
|
||||
trait_ref: trait_ref(trait_path, trait_output),
|
||||
},
|
||||
TraitBoundModifier::None
|
||||
)],
|
||||
})
|
||||
let trait_ref = trait_ref(trait_path, trait_output);
|
||||
parse_quote!(#bounded_ty: #trait_ref)
|
||||
}
|
||||
|
||||
/// Transforms "FooBar" to "foo-bar".
|
||||
|
|
|
|||
|
|
@ -6,52 +6,54 @@ use animate::AnimationVariantAttrs;
|
|||
use cg;
|
||||
use quote::Tokens;
|
||||
use syn::{DeriveInput, Path};
|
||||
use synstructure;
|
||||
|
||||
pub fn derive(input: DeriveInput) -> Tokens {
|
||||
let name = &input.ident;
|
||||
let trait_path = &["values", "distance", "ComputeSquaredDistance"];
|
||||
let trait_path = parse_quote!(values::distance::ComputeSquaredDistance);
|
||||
let (impl_generics, ty_generics, mut where_clause) =
|
||||
cg::trait_parts(&input, trait_path);
|
||||
cg::trait_parts(&input, &trait_path);
|
||||
|
||||
let input_attrs = cg::parse_input_attrs::<DistanceInputAttrs>(&input);
|
||||
let variants = cg::variants(&input);
|
||||
let mut match_body = quote!();
|
||||
let mut append_error_clause = variants.len() > 1;
|
||||
match_body.append_all(variants.iter().map(|variant| {
|
||||
let attrs = cg::parse_variant_attrs::<AnimationVariantAttrs>(variant);
|
||||
let s = synstructure::Structure::new(&input);
|
||||
let mut append_error_clause = s.variants().len() > 1;
|
||||
|
||||
let mut match_body = s.variants().iter().fold(quote!(), |body, variant| {
|
||||
let attrs = cg::parse_variant_attrs::<AnimationVariantAttrs>(&variant.ast());
|
||||
if attrs.error {
|
||||
append_error_clause = true;
|
||||
return None;
|
||||
return body;
|
||||
}
|
||||
let name = cg::variant_ctor(&input, variant);
|
||||
let (this_pattern, this_info) = cg::ref_pattern(&name, &variant, "this");
|
||||
let (other_pattern, other_info) = cg::ref_pattern(&name, &variant, "other");
|
||||
|
||||
let (this_pattern, this_info) = cg::ref_pattern(&variant, "this");
|
||||
let (other_pattern, other_info) = cg::ref_pattern(&variant, "other");
|
||||
let sum = if this_info.is_empty() {
|
||||
quote! { ::values::distance::SquaredDistance::Value(0.) }
|
||||
} else {
|
||||
let mut sum = quote!();
|
||||
sum.append_separated(this_info.iter().zip(&other_info).map(|(this, other)| {
|
||||
where_clause.add_trait_bound(&this.field.ty);
|
||||
where_clause.add_trait_bound(&this.ast().ty);
|
||||
quote! {
|
||||
::values::distance::ComputeSquaredDistance::compute_squared_distance(#this, #other)?
|
||||
}
|
||||
}), "+");
|
||||
}), quote!(+));
|
||||
sum
|
||||
};
|
||||
Some(quote! {
|
||||
quote! {
|
||||
#body
|
||||
(&#this_pattern, &#other_pattern) => {
|
||||
Ok(#sum)
|
||||
}
|
||||
})
|
||||
}));
|
||||
}
|
||||
});
|
||||
|
||||
if append_error_clause {
|
||||
if let Some(fallback) = input_attrs.fallback {
|
||||
match_body.append(quote! {
|
||||
match_body.append_all(quote! {
|
||||
(this, other) => #fallback(this, other)
|
||||
});
|
||||
} else {
|
||||
match_body.append(quote! { _ => Err(()) });
|
||||
match_body.append_all(quote! { _ => Err(()) });
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -7,7 +7,7 @@
|
|||
#[macro_use] extern crate darling;
|
||||
extern crate proc_macro;
|
||||
#[macro_use] extern crate quote;
|
||||
extern crate syn;
|
||||
#[macro_use] extern crate syn;
|
||||
extern crate synstructure;
|
||||
|
||||
use proc_macro::TokenStream;
|
||||
|
|
@ -23,42 +23,42 @@ mod to_css;
|
|||
|
||||
#[proc_macro_derive(Animate, attributes(animate, animation))]
|
||||
pub fn derive_animate(stream: TokenStream) -> TokenStream {
|
||||
let input = syn::parse_derive_input(&stream.to_string()).unwrap();
|
||||
animate::derive(input).to_string().parse().unwrap()
|
||||
let input = syn::parse(stream).unwrap();
|
||||
animate::derive(input).into()
|
||||
}
|
||||
|
||||
#[proc_macro_derive(ComputeSquaredDistance, attributes(animation, distance))]
|
||||
pub fn derive_compute_squared_distance(stream: TokenStream) -> TokenStream {
|
||||
let input = syn::parse_derive_input(&stream.to_string()).unwrap();
|
||||
compute_squared_distance::derive(input).to_string().parse().unwrap()
|
||||
let input = syn::parse(stream).unwrap();
|
||||
compute_squared_distance::derive(input).into()
|
||||
}
|
||||
|
||||
#[proc_macro_derive(ToAnimatedValue)]
|
||||
pub fn derive_to_animated_value(stream: TokenStream) -> TokenStream {
|
||||
let input = syn::parse_derive_input(&stream.to_string()).unwrap();
|
||||
to_animated_value::derive(input).to_string().parse().unwrap()
|
||||
let input = syn::parse(stream).unwrap();
|
||||
to_animated_value::derive(input).into()
|
||||
}
|
||||
|
||||
#[proc_macro_derive(Parse, attributes(css))]
|
||||
pub fn derive_parse(stream: TokenStream) -> TokenStream {
|
||||
let input = syn::parse_derive_input(&stream.to_string()).unwrap();
|
||||
parse::derive(input).to_string().parse().unwrap()
|
||||
let input = syn::parse(stream).unwrap();
|
||||
parse::derive(input).into()
|
||||
}
|
||||
|
||||
#[proc_macro_derive(ToAnimatedZero, attributes(animation))]
|
||||
pub fn derive_to_animated_zero(stream: TokenStream) -> TokenStream {
|
||||
let input = syn::parse_derive_input(&stream.to_string()).unwrap();
|
||||
to_animated_zero::derive(input).to_string().parse().unwrap()
|
||||
let input = syn::parse(stream).unwrap();
|
||||
to_animated_zero::derive(input).into()
|
||||
}
|
||||
|
||||
#[proc_macro_derive(ToComputedValue, attributes(compute))]
|
||||
pub fn derive_to_computed_value(stream: TokenStream) -> TokenStream {
|
||||
let input = syn::parse_derive_input(&stream.to_string()).unwrap();
|
||||
to_computed_value::derive(input).to_string().parse().unwrap()
|
||||
let input = syn::parse(stream).unwrap();
|
||||
to_computed_value::derive(input).into()
|
||||
}
|
||||
|
||||
#[proc_macro_derive(ToCss, attributes(css))]
|
||||
pub fn derive_to_css(stream: TokenStream) -> TokenStream {
|
||||
let input = syn::parse_derive_input(&stream.to_string()).unwrap();
|
||||
to_css::derive(input).to_string().parse().unwrap()
|
||||
let input = syn::parse(stream).unwrap();
|
||||
to_css::derive(input).into()
|
||||
}
|
||||
|
|
|
|||
|
|
@ -10,38 +10,40 @@ use to_css::CssVariantAttrs;
|
|||
|
||||
pub fn derive(input: DeriveInput) -> Tokens {
|
||||
let name = &input.ident;
|
||||
let s = synstructure::Structure::new(&input);
|
||||
|
||||
let mut match_body = quote! {};
|
||||
|
||||
let style = synstructure::BindStyle::Ref.into();
|
||||
synstructure::each_variant(&input, &style, |bindings, variant| {
|
||||
let match_body = s.variants().iter().fold(quote!(), |match_body, variant| {
|
||||
let bindings = variant.bindings();
|
||||
assert!(
|
||||
bindings.is_empty(),
|
||||
"Parse is only supported for single-variant enums for now"
|
||||
);
|
||||
|
||||
let variant_attrs = cg::parse_variant_attrs::<CssVariantAttrs>(variant);
|
||||
let variant_attrs = cg::parse_variant_attrs::<CssVariantAttrs>(&variant.ast());
|
||||
let identifier = cg::to_css_identifier(
|
||||
&variant_attrs.keyword.as_ref().unwrap_or(&variant.ident).as_ref(),
|
||||
&variant_attrs.keyword.unwrap_or(variant.ast().ident.as_ref().into()),
|
||||
);
|
||||
let ident = &variant.ident;
|
||||
let ident = &variant.ast().ident;
|
||||
|
||||
match_body = quote! {
|
||||
let mut body = quote! {
|
||||
#match_body
|
||||
#identifier => Ok(#name::#ident),
|
||||
};
|
||||
|
||||
|
||||
let aliases = match variant_attrs.aliases {
|
||||
Some(aliases) => aliases,
|
||||
None => return,
|
||||
None => return body,
|
||||
};
|
||||
|
||||
for alias in aliases.split(",") {
|
||||
match_body = quote! {
|
||||
#match_body
|
||||
body = quote! {
|
||||
#body
|
||||
#alias => Ok(#name::#ident),
|
||||
};
|
||||
}
|
||||
|
||||
body
|
||||
});
|
||||
|
||||
let parse_trait_impl = quote! {
|
||||
|
|
|
|||
|
|
@ -4,17 +4,17 @@
|
|||
|
||||
use cg;
|
||||
use quote;
|
||||
use syn;
|
||||
use syn::{self, Ident};
|
||||
use synstructure::BindStyle;
|
||||
|
||||
pub fn derive(input: syn::DeriveInput) -> quote::Tokens {
|
||||
let name = &input.ident;
|
||||
let trait_path = &["values", "animated", "ToAnimatedValue"];
|
||||
let trait_path = parse_quote!(values::animated::ToAnimatedValue);
|
||||
let (impl_generics, ty_generics, mut where_clause, animated_value_type) =
|
||||
cg::fmap_trait_parts(&input, trait_path, "AnimatedValue");
|
||||
cg::fmap_trait_parts(&input, &trait_path, Ident::from("AnimatedValue"));
|
||||
|
||||
let to_body = cg::fmap_match(&input, BindStyle::Move, |binding| {
|
||||
where_clause.add_trait_bound(&binding.field.ty);
|
||||
where_clause.add_trait_bound(&binding.ast().ty);
|
||||
quote!(::values::animated::ToAnimatedValue::to_animated_value(#binding))
|
||||
});
|
||||
let from_body = cg::fmap_match(&input, BindStyle::Move, |binding| {
|
||||
|
|
|
|||
|
|
@ -6,31 +6,30 @@ use animate::{AnimationVariantAttrs, AnimationFieldAttrs};
|
|||
use cg;
|
||||
use quote;
|
||||
use syn;
|
||||
use synstructure::{self, BindStyle};
|
||||
use synstructure;
|
||||
|
||||
pub fn derive(input: syn::DeriveInput) -> quote::Tokens {
|
||||
let name = &input.ident;
|
||||
let trait_path = &["values", "animated", "ToAnimatedZero"];
|
||||
let trait_path = parse_quote!(values::animated::ToAnimatedZero);
|
||||
let (impl_generics, ty_generics, mut where_clause) =
|
||||
cg::trait_parts(&input, trait_path);
|
||||
cg::trait_parts(&input, &trait_path);
|
||||
|
||||
let bind_opts = BindStyle::Ref.into();
|
||||
let to_body = synstructure::each_variant(&input, &bind_opts, |bindings, variant| {
|
||||
let attrs = cg::parse_variant_attrs::<AnimationVariantAttrs>(variant);
|
||||
let s = synstructure::Structure::new(&input);
|
||||
let to_body = s.each_variant(|variant| {
|
||||
let attrs = cg::parse_variant_attrs::<AnimationVariantAttrs>(&variant.ast());
|
||||
if attrs.error {
|
||||
return Some(quote! { Err(()) });
|
||||
}
|
||||
let name = cg::variant_ctor(&input, variant);
|
||||
let (mapped, mapped_bindings) = cg::value(&name, variant, "mapped");
|
||||
let bindings_pairs = bindings.into_iter().zip(mapped_bindings);
|
||||
let (mapped, mapped_bindings) = cg::value(variant, "mapped");
|
||||
let bindings_pairs = variant.bindings().into_iter().zip(mapped_bindings);
|
||||
let mut computations = quote!();
|
||||
computations.append_all(bindings_pairs.map(|(binding, mapped_binding)| {
|
||||
let field_attrs = cg::parse_field_attrs::<AnimationFieldAttrs>(&binding.field);
|
||||
let field_attrs = cg::parse_field_attrs::<AnimationFieldAttrs>(&binding.ast());
|
||||
if field_attrs.constant {
|
||||
if cg::is_parameterized(&binding.field.ty, where_clause.params, None) {
|
||||
where_clause.inner.predicates.push(cg::where_predicate(
|
||||
binding.field.ty.clone(),
|
||||
&["std", "clone", "Clone"],
|
||||
if cg::is_parameterized(&binding.ast().ty, &where_clause.params, None) {
|
||||
where_clause.add_predicate(cg::where_predicate(
|
||||
binding.ast().ty.clone(),
|
||||
&parse_quote!(std::clone::Clone),
|
||||
None,
|
||||
));
|
||||
}
|
||||
|
|
@ -38,14 +37,14 @@ pub fn derive(input: syn::DeriveInput) -> quote::Tokens {
|
|||
let #mapped_binding = ::std::clone::Clone::clone(#binding);
|
||||
}
|
||||
} else {
|
||||
where_clause.add_trait_bound(&binding.field.ty);
|
||||
where_clause.add_trait_bound(&binding.ast().ty);
|
||||
quote! {
|
||||
let #mapped_binding =
|
||||
::values::animated::ToAnimatedZero::to_animated_zero(#binding)?;
|
||||
}
|
||||
}
|
||||
}));
|
||||
computations.append(quote! { Ok(#mapped) });
|
||||
computations.append_all(quote! { Ok(#mapped) });
|
||||
Some(computations)
|
||||
});
|
||||
|
||||
|
|
|
|||
|
|
@ -4,29 +4,29 @@
|
|||
|
||||
use cg;
|
||||
use quote::Tokens;
|
||||
use syn::DeriveInput;
|
||||
use syn::{Ident, DeriveInput};
|
||||
use synstructure::BindStyle;
|
||||
|
||||
pub fn derive(input: DeriveInput) -> Tokens {
|
||||
let name = &input.ident;
|
||||
let trait_path = &["values", "computed", "ToComputedValue"];
|
||||
let trait_path = parse_quote!(values::computed::ToComputedValue);
|
||||
let (impl_generics, ty_generics, mut where_clause, computed_value_type) =
|
||||
cg::fmap_trait_parts(&input, trait_path, "ComputedValue");
|
||||
cg::fmap_trait_parts(&input, &trait_path, Ident::from("ComputedValue"));
|
||||
|
||||
let to_body = cg::fmap_match(&input, BindStyle::Ref, |binding| {
|
||||
let attrs = cg::parse_field_attrs::<ComputedValueAttrs>(&binding.field);
|
||||
let attrs = cg::parse_field_attrs::<ComputedValueAttrs>(&binding.ast());
|
||||
if attrs.clone {
|
||||
if cg::is_parameterized(&binding.field.ty, where_clause.params, None) {
|
||||
where_clause.inner.predicates.push(cg::where_predicate(
|
||||
binding.field.ty.clone(),
|
||||
&["std", "clone", "Clone"],
|
||||
if cg::is_parameterized(&binding.ast().ty, &where_clause.params, None) {
|
||||
where_clause.add_predicate(cg::where_predicate(
|
||||
binding.ast().ty.clone(),
|
||||
&parse_quote!(std::clone::Clone),
|
||||
None,
|
||||
));
|
||||
}
|
||||
quote! { ::std::clone::Clone::clone(#binding) }
|
||||
} else {
|
||||
if !attrs.ignore_bound {
|
||||
where_clause.add_trait_bound(&binding.field.ty);
|
||||
where_clause.add_trait_bound(&binding.ast().ty);
|
||||
}
|
||||
quote! {
|
||||
::values::computed::ToComputedValue::to_computed_value(#binding, context)
|
||||
|
|
@ -34,7 +34,7 @@ pub fn derive(input: DeriveInput) -> Tokens {
|
|||
}
|
||||
});
|
||||
let from_body = cg::fmap_match(&input, BindStyle::Ref, |binding| {
|
||||
let attrs = cg::parse_field_attrs::<ComputedValueAttrs>(&binding.field);
|
||||
let attrs = cg::parse_field_attrs::<ComputedValueAttrs>(&binding.ast());
|
||||
if attrs.clone {
|
||||
quote! { ::std::clone::Clone::clone(#binding) }
|
||||
} else {
|
||||
|
|
|
|||
|
|
@ -5,20 +5,23 @@
|
|||
use cg;
|
||||
use darling::{Error, FromMetaItem};
|
||||
use quote::Tokens;
|
||||
use syn::{self, DeriveInput, Ident};
|
||||
use syn::{self, Ident};
|
||||
use synstructure;
|
||||
|
||||
pub fn derive(input: DeriveInput) -> Tokens {
|
||||
pub fn derive(input: syn::DeriveInput) -> Tokens {
|
||||
let name = &input.ident;
|
||||
let trait_path = &["style_traits", "ToCss"];
|
||||
let trait_path = parse_quote!(style_traits::ToCss);
|
||||
let (impl_generics, ty_generics, mut where_clause) =
|
||||
cg::trait_parts(&input, trait_path);
|
||||
cg::trait_parts(&input, &trait_path);
|
||||
|
||||
let input_attrs = cg::parse_input_attrs::<CssInputAttrs>(&input);
|
||||
let style = synstructure::BindStyle::Ref.into();
|
||||
let match_body = synstructure::each_variant(&input, &style, |bindings, variant| {
|
||||
let identifier = cg::to_css_identifier(variant.ident.as_ref());
|
||||
let variant_attrs = cg::parse_variant_attrs::<CssVariantAttrs>(variant);
|
||||
let s = synstructure::Structure::new(&input);
|
||||
|
||||
let match_body = s.each_variant(|variant| {
|
||||
let bindings = variant.bindings();
|
||||
let identifier = cg::to_css_identifier(variant.ast().ident.as_ref());
|
||||
let ast = variant.ast();
|
||||
let variant_attrs = cg::parse_variant_attrs::<CssVariantAttrs>(&ast);
|
||||
let separator = if variant_attrs.comma { ", " } else { " " };
|
||||
|
||||
if variant_attrs.dimension {
|
||||
|
|
@ -49,9 +52,9 @@ pub fn derive(input: DeriveInput) -> Tokens {
|
|||
};
|
||||
} else {
|
||||
for binding in bindings {
|
||||
let attrs = cg::parse_field_attrs::<CssFieldAttrs>(&binding.field);
|
||||
let attrs = cg::parse_field_attrs::<CssFieldAttrs>(&binding.ast());
|
||||
if !attrs.ignore_bound {
|
||||
where_clause.add_trait_bound(&binding.field.ty);
|
||||
where_clause.add_trait_bound(&binding.ast().ty);
|
||||
}
|
||||
expr = quote! {
|
||||
#expr
|
||||
|
|
@ -107,7 +110,7 @@ pub fn derive(input: DeriveInput) -> Tokens {
|
|||
};
|
||||
|
||||
if input_attrs.derive_debug {
|
||||
impls.append(quote! {
|
||||
impls.append_all(quote! {
|
||||
impl #impl_generics ::std::fmt::Debug for #name #ty_generics #where_clause {
|
||||
fn fmt(&self, f: &mut ::std::fmt::Formatter) -> ::std::fmt::Result {
|
||||
::style_traits::ToCss::to_css(
|
||||
|
|
@ -137,7 +140,7 @@ pub struct CssVariantAttrs {
|
|||
pub iterable: bool,
|
||||
pub comma: bool,
|
||||
pub dimension: bool,
|
||||
pub keyword: Option<Ident>,
|
||||
pub keyword: Option<String>,
|
||||
pub aliases: Option<String>,
|
||||
}
|
||||
|
||||
|
|
@ -157,7 +160,7 @@ impl FromMetaItem for Function {
|
|||
}
|
||||
|
||||
fn from_string(name: &str) -> Result<Self, Error> {
|
||||
let name = syn::parse_ident(name).map_err(Error::custom)?;
|
||||
let name = Ident::from(name);
|
||||
Ok(Self { name: Some(name) })
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -42,7 +42,6 @@ packages = [
|
|||
"syn",
|
||||
"quote",
|
||||
"unicode-xid",
|
||||
"synstructure",
|
||||
]
|
||||
# Files that are ignored for all tidy and lint checks.
|
||||
files = [
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue