1 files changed, 99 insertions, 0 deletions
diff --git a/src/gen/rust/path.rs b/src/gen/rust/path.rs
new file mode 100644
index 0000000..84d38a3
--- /dev/null
+++ b/src/gen/rust/path.rs
@@ -0,0 +1,99 @@
+use std::fmt;
+
+use crate::gen::rust::component::RustPathComponent;
+use crate::gen::rust::ident::RustIdent;
+use crate::gen::rust::ident_with_path::RustIdentWithPath;
+use crate::gen::rust::rel_path::RustRelativePath;
+
+#[derive(Default, Eq, PartialEq, Debug, Clone)]
+pub(crate) struct RustPath {
+    pub(crate) absolute: bool,
+    pub(crate) path: RustRelativePath,
+}
+
+impl RustPath {
+    pub fn super_path() -> RustPath {
+        RustPath::from("super")
+    }
+
+    pub fn is_absolute(&self) -> bool {
+        self.absolute
+    }
+
+    pub fn with_ident(self, ident: RustIdent) -> RustIdentWithPath {
+        RustIdentWithPath { path: self, ident }
+    }
+
+    pub fn first(&self) -> Option<RustPathComponent> {
+        assert!(!self.absolute);
+        self.path.first()
+    }
+
+    pub fn remove_first(&mut self) -> Option<RustPathComponent> {
+        assert!(!self.absolute);
+        self.path.remove_first()
+    }
+
+    pub fn prepend_ident(&mut self, ident: RustIdent) {
+        assert!(!self.absolute);
+        self.path.prepend_ident(ident);
+    }
+
+    pub fn append(self, path: RustPath) -> RustPath {
+        if path.absolute {
+            path
+        } else {
+            RustPath {
+                absolute: self.absolute,
+                path: self.path.append(path.path),
+            }
+        }
+    }
+
+    pub(crate) fn append_component(mut self, component: RustPathComponent) -> RustPath {
+        self.path.path.push(component);
+        self
+    }
+
+    pub fn append_ident(self, ident: RustIdent) -> RustPath {
+        self.append_component(RustPathComponent::Ident(ident))
+    }
+
+    pub fn append_with_ident(self, path: RustIdentWithPath) -> RustIdentWithPath {
+        self.append(path.path).with_ident(path.ident)
+    }
+
+    pub fn into_relative_or_panic(self) -> RustRelativePath {
+        assert!(!self.absolute);
+        self.path
+    }
+}
+
+impl From<&'_ str> for RustPath {
+    fn from(s: &str) -> Self {
+        let (s, absolute) = if s.starts_with("::") {
+            (&s[2..], true)
+        } else {
+            (s, false)
+        };
+        RustPath {
+            absolute,
+            path: RustRelativePath::from(s),
+        }
+    }
+}
+
+impl From<String> for RustPath {
+    fn from(s: String) -> Self {
+        RustPath::from(&s[..])
+    }
+}
+
+impl fmt::Display for RustPath {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        if self.absolute {
+            write!(f, "::")?;
+        }
+        write!(f, "{}", self.path)
+    }
+}