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extern crate syn;
mod features;
#[macro_use]
mod macros;
use syn::parse::Parser;
use syn::{Attribute, Meta};
#[test]
fn test_meta_item_word() {
let meta = test("#[foo]");
snapshot!(meta, @r###"
⋮Path(Path {
⋮ segments: [
⋮ PathSegment {
⋮ ident: "foo",
⋮ arguments: None,
⋮ },
⋮ ],
⋮})
"###);
}
#[test]
fn test_meta_item_name_value() {
let meta = test("#[foo = 5]");
snapshot!(meta, @r###"
⋮Meta::NameValue {
⋮ path: Path {
⋮ segments: [
⋮ PathSegment {
⋮ ident: "foo",
⋮ arguments: None,
⋮ },
⋮ ],
⋮ },
⋮ lit: 5,
⋮}
"###);
}
#[test]
fn test_meta_item_bool_value() {
let meta = test("#[foo = true]");
snapshot!(meta, @r###"
⋮Meta::NameValue {
⋮ path: Path {
⋮ segments: [
⋮ PathSegment {
⋮ ident: "foo",
⋮ arguments: None,
⋮ },
⋮ ],
⋮ },
⋮ lit: Lit::Bool {
⋮ value: true,
⋮ },
⋮}
"###);
let meta = test("#[foo = false]");
snapshot!(meta, @r###"
⋮Meta::NameValue {
⋮ path: Path {
⋮ segments: [
⋮ PathSegment {
⋮ ident: "foo",
⋮ arguments: None,
⋮ },
⋮ ],
⋮ },
⋮ lit: Lit::Bool {
⋮ value: false,
⋮ },
⋮}
"###);
}
#[test]
fn test_meta_item_list_lit() {
let meta = test("#[foo(5)]");
snapshot!(meta, @r###"
⋮Meta::List {
⋮ path: Path {
⋮ segments: [
⋮ PathSegment {
⋮ ident: "foo",
⋮ arguments: None,
⋮ },
⋮ ],
⋮ },
⋮ nested: [
⋮ Lit(5),
⋮ ],
⋮}
"###);
}
#[test]
fn test_meta_item_list_word() {
let meta = test("#[foo(bar)]");
snapshot!(meta, @r###"
⋮Meta::List {
⋮ path: Path {
⋮ segments: [
⋮ PathSegment {
⋮ ident: "foo",
⋮ arguments: None,
⋮ },
⋮ ],
⋮ },
⋮ nested: [
⋮ Meta(Path(Path {
⋮ segments: [
⋮ PathSegment {
⋮ ident: "bar",
⋮ arguments: None,
⋮ },
⋮ ],
⋮ })),
⋮ ],
⋮}
"###);
}
#[test]
fn test_meta_item_list_name_value() {
let meta = test("#[foo(bar = 5)]");
snapshot!(meta, @r###"
⋮Meta::List {
⋮ path: Path {
⋮ segments: [
⋮ PathSegment {
⋮ ident: "foo",
⋮ arguments: None,
⋮ },
⋮ ],
⋮ },
⋮ nested: [
⋮ Meta(Meta::NameValue {
⋮ path: Path {
⋮ segments: [
⋮ PathSegment {
⋮ ident: "bar",
⋮ arguments: None,
⋮ },
⋮ ],
⋮ },
⋮ lit: 5,
⋮ }),
⋮ ],
⋮}
"###);
}
#[test]
fn test_meta_item_list_bool_value() {
let meta = test("#[foo(bar = true)]");
snapshot!(meta, @r###"
⋮Meta::List {
⋮ path: Path {
⋮ segments: [
⋮ PathSegment {
⋮ ident: "foo",
⋮ arguments: None,
⋮ },
⋮ ],
⋮ },
⋮ nested: [
⋮ Meta(Meta::NameValue {
⋮ path: Path {
⋮ segments: [
⋮ PathSegment {
⋮ ident: "bar",
⋮ arguments: None,
⋮ },
⋮ ],
⋮ },
⋮ lit: Lit::Bool {
⋮ value: true,
⋮ },
⋮ }),
⋮ ],
⋮}
"###);
}
#[test]
fn test_meta_item_multiple() {
let meta = test("#[foo(word, name = 5, list(name2 = 6), word2)]");
snapshot!(meta, @r###"
⋮Meta::List {
⋮ path: Path {
⋮ segments: [
⋮ PathSegment {
⋮ ident: "foo",
⋮ arguments: None,
⋮ },
⋮ ],
⋮ },
⋮ nested: [
⋮ Meta(Path(Path {
⋮ segments: [
⋮ PathSegment {
⋮ ident: "word",
⋮ arguments: None,
⋮ },
⋮ ],
⋮ })),
⋮ Meta(Meta::NameValue {
⋮ path: Path {
⋮ segments: [
⋮ PathSegment {
⋮ ident: "name",
⋮ arguments: None,
⋮ },
⋮ ],
⋮ },
⋮ lit: 5,
⋮ }),
⋮ Meta(Meta::List {
⋮ path: Path {
⋮ segments: [
⋮ PathSegment {
⋮ ident: "list",
⋮ arguments: None,
⋮ },
⋮ ],
⋮ },
⋮ nested: [
⋮ Meta(Meta::NameValue {
⋮ path: Path {
⋮ segments: [
⋮ PathSegment {
⋮ ident: "name2",
⋮ arguments: None,
⋮ },
⋮ ],
⋮ },
⋮ lit: 6,
⋮ }),
⋮ ],
⋮ }),
⋮ Meta(Path(Path {
⋮ segments: [
⋮ PathSegment {
⋮ ident: "word2",
⋮ arguments: None,
⋮ },
⋮ ],
⋮ })),
⋮ ],
⋮}
"###);
}
#[test]
fn test_bool_lit() {
let meta = test("#[foo(true)]");
snapshot!(meta, @r###"
⋮Meta::List {
⋮ path: Path {
⋮ segments: [
⋮ PathSegment {
⋮ ident: "foo",
⋮ arguments: None,
⋮ },
⋮ ],
⋮ },
⋮ nested: [
⋮ Lit(Lit::Bool {
⋮ value: true,
⋮ }),
⋮ ],
⋮}
"###);
}
fn test(input: &str) -> Meta {
let attrs = Attribute::parse_outer.parse_str(input).unwrap();
assert_eq!(attrs.len(), 1);
let attr = attrs.into_iter().next().unwrap();
attr.parse_meta().unwrap()
}