Add AST data structures to nix-parser2 crate

The new parser would produce a CST (concrete syntax tree) which losslessly preserves all tokens, including invalid tokens and trivia, which would be then simplified down into this AST in a subsequent pass.
ebkalderon · Mar 25, 2020 · 38b9cae · 38b9cae
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commit 38b9cae
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diff --git a/Cargo.lock b/Cargo.lock
diff --git a/nix-parser2/Cargo.toml b/nix-parser2/Cargo.toml
@@ -13,6 +13,8 @@ codespan = "0.9.1"
 nom = { version = "5.1", default-features = false }
 nom_locate = "2.0"
 smallvec = "1.2"
+smol_str = "0.1"
+url = "2.1"
 
 serde = { version = "1.0", features = ["derive"], optional = true }