From 4edaf0814868e604eed5cfd594ea3f448ca90678 Mon Sep 17 00:00:00 2001
From: Fintan Halpenny
Date: Tue, 3 Sep 2019 14:42:30 +0100
Subject: Move Canonicalize into resolve. Rename File to FilePath and have more
 consistent naming.

---
 dhall_syntax/src/core/import.rs | 75 ++---------------------------------------
 dhall_syntax/src/parser.rs      |  6 ++--
 2 files changed, 6 insertions(+), 75 deletions(-)

(limited to 'dhall_syntax/src')

diff --git a/dhall_syntax/src/core/import.rs b/dhall_syntax/src/core/import.rs
index 5e0ff6c..cc38bb0 100644
--- a/dhall_syntax/src/core/import.rs
+++ b/dhall_syntax/src/core/import.rs
@@ -12,14 +12,14 @@ pub enum FilePrefix {
 }
 
 #[derive(Debug, Clone, PartialEq, Eq, Hash)]
-pub struct File {
+pub struct FilePath {
     pub file_path: Vec<String>,
 }
 
 /// The location of import (i.e. local vs. remote vs. environment)
 #[derive(Debug, Clone, PartialEq, Eq, Hash)]
 pub enum ImportLocation<SubExpr> {
-    Local(FilePrefix, File),
+    Local(FilePrefix, FilePath),
     Remote(URL<SubExpr>),
     Env(String),
     Missing,
@@ -29,7 +29,7 @@ pub enum ImportLocation<SubExpr> {
 pub struct URL<SubExpr> {
     pub scheme: Scheme,
     pub authority: String,
-    pub path: File,
+    pub path: FilePath,
     pub query: Option<String>,
     pub headers: Option<SubExpr>,
 }
@@ -104,72 +104,3 @@ impl<SE> Import<SE> {
         })
     }
 }
-
-pub trait Canonicalize {
-    fn canonicalize(&self) -> Self;
-}
-
-impl Canonicalize for File {
-    fn canonicalize(&self) -> File {
-        let mut file_path = Vec::new();
-        let mut file_path_components = self.file_path.clone().into_iter();
-
-        loop {
-           let component = file_path_components.next();
-           match component {
-               // ───────────────────
-               // canonicalize(ε) = ε
-               None => break,
-
-               // canonicalize(directory₀) = directory₁
-               // ───────────────────────────────────────
-               // canonicalize(directory₀/.) = directory₁
-               Some(c) if c == "." => continue,
-
-               Some(c) if c == ".." => match file_path_components.next() {
-                   // canonicalize(directory₀) = ε
-                   // ────────────────────────────
-                   // canonicalize(directory₀/..) = /..
-                   None => file_path.push("..".to_string()),
-
-                   // canonicalize(directory₀) = directory₁/..
-                   // ──────────────────────────────────────────────
-                   // canonicalize(directory₀/..) = directory₁/../..
-                   Some(ref c) if c == ".." => {
-                       file_path.push("..".to_string());
-                       file_path.push("..".to_string());
-                   },
-
-                   // canonicalize(directory₀) = directory₁/component
-                   // ───────────────────────────────────────────────  ; If "component" is not
-                   // canonicalize(directory₀/..) = directory₁         ; ".."
-                   Some(_) => continue,
-               },
-
-               // canonicalize(directory₀) = directory₁
-               // ─────────────────────────────────────────────────────────  ; If no other
-               // canonicalize(directory₀/component) = directory₁/component  ; rule matches
-               Some(c) => file_path.push(c.clone()),
-           }
-        }
-
-        File { file_path }
-    }
-}
-
-impl<SubExpr: Copy> Canonicalize for ImportLocation<SubExpr>  {
-    fn canonicalize(&self) -> ImportLocation<SubExpr> {
-        match self {
-            ImportLocation::Local(prefix, file) => ImportLocation::Local(*prefix, file.canonicalize()),
-            ImportLocation::Remote(url) => ImportLocation::Remote(URL {
-                    scheme: url.scheme,
-                    authority: url.authority.clone(),
-                    path: url.path.canonicalize(),
-                    query: url.query.clone(),
-                    headers: url.headers.clone(),
-            }),
-            ImportLocation::Env(name) => ImportLocation::Env(name.to_string()),
-            ImportLocation::Missing => ImportLocation::Missing,
-        }
-    }
-}
diff --git a/dhall_syntax/src/parser.rs b/dhall_syntax/src/parser.rs
index b70a236..52b3760 100644
--- a/dhall_syntax/src/parser.rs
+++ b/dhall_syntax/src/parser.rs
@@ -729,7 +729,7 @@ make_parser! {
         [scheme(sch), authority(auth), path(file_path)] => URL {
             scheme: sch,
             authority: auth,
-            path: File { file_path },
+            path: FilePath { file_path },
             query: None,
             headers: None,
         },
@@ -737,7 +737,7 @@ make_parser! {
             URL {
                 scheme: sch,
                 authority: auth,
-                path: File { file_path },
+                path: FilePath { file_path },
                 query: Some(q),
                 headers: None,
             }
@@ -794,7 +794,7 @@ make_parser! {
             ImportLocation::Remote(url)
         },
         [local((prefix, file_path))] => {
-            ImportLocation::Local(prefix, File { file_path })
+            ImportLocation::Local(prefix, FilePath { file_path })
         },
     ));
 
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