Add structopt dependency in version 0.3.7

This patch series replaces argparse with structopt in the argument
handling code. As a first step, we need structopt as a dependency.

Import subrepo structopt/:structopt at efbdda4753592e27bc430fb01f7b9650b2f3174d
Import subrepo bitflags/:bitflags at 30668016aca6bd3b02c766e8347e0b4080d4c296
Import subrepo clap/:clap at 784524f7eb193e35f81082cc69454c8c21b948f7
Import subrepo heck/:heck at 093d56fbf001e1506e56dbfa38631d99b1066df1
Import subrepo proc-macro-error/:proc-macro-error at 6c4cfe79a622c5de8ae68557993542be46eacae2
Import subrepo proc-macro2/:proc-macro2 at d5d48eddca4566e5438e8a2cbed4a74e049544de
Import subrepo quote/:quote at 727436c6c137b20f0f34dde5d8fda2679b9747ad
Import subrepo rustversion/:rustversion at 0c5663313516263059ce9059ef81fc7a1cf655ca
Import subrepo syn-mid/:syn-mid at 5d3d85414a9e6674e1857ec22a87b96e04a6851a
Import subrepo syn/:syn at e87c27e87f6f4ef8919d0372bdb056d53ef0d8f3
Import subrepo textwrap/:textwrap at abcd618beae3f74841032aa5b53c1086b0a57ca2
Import subrepo unicode-segmentation/:unicode-segmentation at 637c9874c4fe0c205ff27787faf150a40295c6c3
Import subrepo unicode-width/:unicode-width at 3033826f8bf05e82724140a981d5941e48fce393
Import subrepo unicode-xid/:unicode-xid at 4baae9fffb156ba229665b972a9cd5991787ceb7

1 files changed, 341 insertions, 0 deletions

diff --git a/syn/tests/test_meta.rs b/syn/tests/test_meta.rs
new file mode 100644
index 0000000..618296e
--- /dev/null
+++ b/syn/tests/test_meta.rs
@@ -0,0 +1,341 @@
+mod features;
+
+#[macro_use]
+mod macros;
+
+use syn::{Meta, MetaList, MetaNameValue, NestedMeta};
+
+#[test]
+fn test_parse_meta_item_word() {
+    let input = "hello";
+
+    snapshot!(input as Meta, @r###"
+    Path(Path {
+        segments: [
+            PathSegment {
+                ident: "hello",
+                arguments: None,
+            },
+        ],
+    })
+    "###);
+}
+
+#[test]
+fn test_parse_meta_name_value() {
+    let input = "foo = 5";
+    let (inner, meta) = (input, input);
+
+    snapshot!(inner as MetaNameValue, @r###"
+    MetaNameValue {
+        path: Path {
+            segments: [
+                PathSegment {
+                    ident: "foo",
+                    arguments: None,
+                },
+            ],
+        },
+        lit: 5,
+    }
+    "###);
+
+    snapshot!(meta as Meta, @r###"
+    Meta::NameValue {
+        path: Path {
+            segments: [
+                PathSegment {
+                    ident: "foo",
+                    arguments: None,
+                },
+            ],
+        },
+        lit: 5,
+    }
+    "###);
+
+    assert_eq!(meta, inner.into());
+}
+
+#[test]
+fn test_parse_meta_name_value_with_keyword() {
+    let input = "static = 5";
+    let (inner, meta) = (input, input);
+
+    snapshot!(inner as MetaNameValue, @r###"
+    MetaNameValue {
+        path: Path {
+            segments: [
+                PathSegment {
+                    ident: "static",
+                    arguments: None,
+                },
+            ],
+        },
+        lit: 5,
+    }
+    "###);
+
+    snapshot!(meta as Meta, @r###"
+    Meta::NameValue {
+        path: Path {
+            segments: [
+                PathSegment {
+                    ident: "static",
+                    arguments: None,
+                },
+            ],
+        },
+        lit: 5,
+    }
+    "###);
+
+    assert_eq!(meta, inner.into());
+}
+
+#[test]
+fn test_parse_meta_name_value_with_bool() {
+    let input = "true = 5";
+    let (inner, meta) = (input, input);
+
+    snapshot!(inner as MetaNameValue, @r###"
+    MetaNameValue {
+        path: Path {
+            segments: [
+                PathSegment {
+                    ident: "true",
+                    arguments: None,
+                },
+            ],
+        },
+        lit: 5,
+    }
+    "###);
+
+    snapshot!(meta as Meta, @r###"
+    Meta::NameValue {
+        path: Path {
+            segments: [
+                PathSegment {
+                    ident: "true",
+                    arguments: None,
+                },
+            ],
+        },
+        lit: 5,
+    }
+    "###);
+
+    assert_eq!(meta, inner.into());
+}
+
+#[test]
+fn test_parse_meta_item_list_lit() {
+    let input = "foo(5)";
+    let (inner, meta) = (input, input);
+
+    snapshot!(inner as MetaList, @r###"
+    MetaList {
+        path: Path {
+            segments: [
+                PathSegment {
+                    ident: "foo",
+                    arguments: None,
+                },
+            ],
+        },
+        nested: [
+            Lit(5),
+        ],
+    }
+    "###);
+
+    snapshot!(meta as Meta, @r###"
+    Meta::List {
+        path: Path {
+            segments: [
+                PathSegment {
+                    ident: "foo",
+                    arguments: None,
+                },
+            ],
+        },
+        nested: [
+            Lit(5),
+        ],
+    }
+    "###);
+
+    assert_eq!(meta, inner.into());
+}
+
+#[test]
+fn test_parse_meta_item_multiple() {
+    let input = "foo(word, name = 5, list(name2 = 6), word2)";
+    let (inner, meta) = (input, input);
+
+    snapshot!(inner as MetaList, @r###"
+    MetaList {
+        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,
+                    },
+                ],
+            })),
+        ],
+    }
+    "###);
+
+    snapshot!(meta as 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,
+                    },
+                ],
+            })),
+        ],
+    }
+    "###);
+
+    assert_eq!(meta, inner.into());
+}
+
+#[test]
+fn test_parse_nested_meta() {
+    let input = "5";
+    snapshot!(input as NestedMeta, @"Lit(5)");
+
+    let input = "list(name2 = 6)";
+    snapshot!(input as NestedMeta, @r###"
+    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,
+            }),
+        ],
+    })
+    "###);
+}