1 files changed, 158 insertions, 24 deletions

diff --git a/src/_props.scss b/src/_props.scss
index 86530f7..86a2215 100644
--- a/src/_props.scss
+++ b/src/_props.scss
@@ -41,26 +41,71 @@ $iro-props-default-tree: 'default' !default;
 ///
 $iro-props-trees: ();
 
+///
+/// Default context name used for the namespace context.
+///
+/// @type string
+///
+$iro-props-namespace-context-id: 'namespace' !default;
+
+///
+/// Declare a namespace, meaning that all variables declared and accessed.
+///
+/// @param {string} $name - Name of the namespace
+///
+@mixin iro-props-namespace($name) {
+    $key: '--#{$name}';
+
+    $ns-key: iro-props-get-ns-key();
+
+    @if $ns-key != null {
+        $key: append($ns-key, $key);
+    } @else {
+        $key: ($key);
+    }
+
+    @include iro-context-push($iro-props-namespace-context-id, 'namespace', (
+        'name': $name,
+        'key':  $key
+    ));
+
+    @content;
+
+    @include iro-context-pop($iro-props-namespace-context-id);
+}
+
+///
+/// Get the current namespace name.
+///
+@function iro-props-ns-name() {
+    $noop: iro-context-assert-stack-must-contain($iro-props-namespace-context-id, 'namespace');
+
+    $data: nth(iro-context-get($iro-props-namespace-context-id, 'namespace'), 2);
+    $name: map-get($data, 'name');
+
+    @return $name;
+}
+
 /// 
 /// Save a property tree. If a tree with the sane name already exists, the trees
 /// will be merged.
 ///
-/// @param {map}    $map                            - Map containing properties
+/// @param {map}    $map                             - Map containing properties
 /// @param {string} $tree  [$iro-props-default-tree] - ID the map is saved as
-/// @param {bool}   $merge [false]                  - If a tree named $tree already exists and this value is set to true, they will be merged. Otherwise an error will be emitted.
+/// @param {bool}   $merge [false]                   - If a tree named $tree already exists and this value is set to true, they will be merged. Otherwise an error will be emitted.
 ///
-@mixin iro-props-save($map, $tree: $iro-props-default-tree, $merge: false) {
-    $noop: iro-props-save($map, $tree, $merge);
+@mixin iro-props-store($map, $tree: $iro-props-default-tree, $merge: false, $global: false) {
+    $noop: iro-props-store($map, $tree, $merge, $global);
 }
 
 /// 
 /// Save a property tree.
 ///
-/// @param {map}    $map                            - Map containing properties
+/// @param {map}    $map                             - Map containing properties
 /// @param {string} $tree  [$iro-props-default-tree] - ID the map is saved as
-/// @param {bool}   $merge [false]                  - If a tree named $tree already exists and this value is set to true, they will be merged. Otherwise an error will be emitted.
+/// @param {bool}   $merge [false]                   - If a tree named $tree already exists and this value is set to true, they will be merged. Otherwise an error will be emitted.
 ///
-@function iro-props-save($map, $tree: $iro-props-default-tree, $merge: false) {
+@function iro-props-store($map, $tree: $iro-props-default-tree, $merge: false, $global: false) {
     $prop-map: null;
 
     @if $iro-props-enforce-double-dashes {
@@ -69,6 +114,14 @@ $iro-props-trees: ();
         }
     }
 
+    @if not $global {
+        $ns-key: iro-props-get-ns-key();
+
+        @if $ns-key != null {
+            $map: ($ns-key: $map)
+        }
+    }
+
     @if map-has-key($iro-props-trees, $tree) {
         @if $merge {
             $map: iro-map-merge-recursive(map-get($iro-props-trees, $tree), $map);
@@ -87,18 +140,18 @@ $iro-props-trees: ();
 ///
 /// @param {string} $tree [$iro-props-default-tree] - ID of the tree to be deleted
 ///
-@mixin iro-props-delete($tree: $iro-props-default-tree) {
-    $noop: iro-props-delete($tree);
+@mixin iro-props-clear($tree: $iro-props-default-tree) {
+    $noop: iro-props-clear($tree);
 }
 
 /// 
-/// Unset a property tree.
+/// Delete a property tree.
 ///
 /// @param {string} $tree [$iro-props-default-tree] - ID of the tree to be deleted
 ///
 /// @throw If the property tree does not exist
 ///
-@function iro-props-delete($tree: $iro-props-default-tree) {
+@function iro-props-clear($tree: $iro-props-default-tree) {
     @if not map-has-key($iro-props-trees, $tree) {
         @error 'Property tree "#{inspect($tree)}" does not exist.';
     }
@@ -111,33 +164,50 @@ $iro-props-trees: ();
 /// 
 /// Access a whole property or a subsection (i.e. value) of it.
 ///
-/// @param {string | list} $key     [null]                   - Key of the property to read. If this is a list of keys, the map will be traversed in that order.
+/// @param {string | list} $key     [null]                    - Key of the property to read. If this is a list of keys, the map will be traversed in that order.
 /// @param {string}        $tree    [$iro-props-default-tree] - ID of the property tree to use
-/// @param {any}           $default [null]                   - Default value to return of no match was found. If null, this function will throw an error instead.
+/// @param {any}           $default [null]                    - Default value to return of no match was found. If null, this function will throw an error instead.
 ///
 /// @return {any} Value assigned to property or $default
 ///
 /// @throw If there was no match for $key and $default is null
 ///
-@function iro-props-get($key: (), $tree: $iro-props-default-tree, $default: null) {
+@function iro-props-get($key: (), $tree: $iro-props-default-tree, $default: null, $global: false) {
     @if not map-has-key($iro-props-trees, $tree) {
         @error 'Unknown tree "#{$tree}".';
     }
 
     $result: map-get($iro-props-trees, $tree);
 
+    @if not $global {
+        $ns-key: iro-props-get-ns-key();
+
+        @if $ns-key != null {
+            $orig-key: $key;
+            $key:      $ns-key;
+
+            @if type-of($orig-key) == list {
+                @each $subkey in $orig-key {
+                    $key: append($key, $subkey);
+                }
+            } @else {
+                $key: append($key, $orig-key);
+            }
+        }
+    }
+
     @if type-of($key) == list {
         $stop: false;
 
         @each $k in $key {
-            @if map-has-key($result, $k) and not $stop {
+            @if not $stop and map-has-key($result, $k) {
                 $result: map-get($result, $k);
 
                 @if type-of($result) == list and nth($result, 1) == 'iro-prop-ref' {
                     @if length($result) == 2 {
-                        $result: iro-props-get($tree: nth($result, 2));
+                        $result: iro-props-get($tree: nth($result, 2), $global: true);
                     } @else {
-                        $result: iro-props-get(nth($result, 3), nth($result, 2));
+                        $result: iro-props-get(nth($result, 3), nth($result, 2), $global: true);
                     }
                 }
             } @else {
@@ -153,9 +223,9 @@ $iro-props-trees: ();
 
         @if type-of($result) == list and nth($result, 1) == 'iro-prop-ref' {
             @if length($result) == 2 {
-                $result: iro-props-get($tree: nth($result, 2));
+                $result: iro-props-get($tree: nth($result, 2), $global: true);
             } @else {
-                $result: iro-props-get(nth($result, 3), nth($result, 2));
+                $result: iro-props-get(nth($result, 3), nth($result, 2), $global: true);
             }
         }
     }
@@ -180,11 +250,28 @@ $iro-props-trees: ();
 ///
 /// @return {string} var()
 ///
-@function iro-props-get-native($key, $tree: null, $default: null) {
+@function iro-props-get-native($key, $tree: null, $default: null, $global: false) {
     @if $tree != null {
         $noop: iro-props-get($key, $tree, $default);
     }
 
+    @if not $global {
+        $ns-key: iro-props-get-ns-key();
+
+        @if $ns-key != null {
+            $orig-key: $key;
+            $key:      $ns-key;
+
+            @if type-of($orig-key) == list {
+                @each $subkey in $orig-key {
+                    $key: append($key, $subkey);
+                }
+            } @else {
+                $key: append($key, $orig-key);
+            }
+        }
+    }
+
     $native-var: '';
 
     @if type-of($key) == list {
@@ -206,9 +293,9 @@ $iro-props-trees: ();
 /// Generate assignments for native CSS custom properties with the values from the specified tree.
 ///
 /// @param {string} $tree [$iro-props-default-tree] - ID of the property tree to use
-/// @param {string} $root [()]                     - Sub-tree to use for assignment
+/// @param {string} $root [()]                      - Sub-tree to use for assignment
 ///
-@mixin iro-props-assign-native($tree: $iro-props-default-tree, $root: (), $skip: (), $prefix: '') {
+@mixin iro-props-assign-native($tree: $iro-props-default-tree, $root: (), $skip: (), $prefix: '', $global: false) {
     $map: iro-props-get($root, $tree);
     $map: map-remove($map, $skip...);
 
@@ -216,6 +303,14 @@ $iro-props-trees: ();
         $prefix: iro-str-implode($prefix)
     }
 
+    @if not $global {
+        $ns-key: iro-props-get-ns-key();
+
+        @if $ns-key != null {
+            $prefix: $prefix + iro-str-implode($ns-key);
+        }
+    }
+
     @include iro-props-assign-native-internal($map, $prefix);
 }
 
@@ -270,16 +365,55 @@ $iro-props-trees: ();
 /// Generate a reference to another tree. Dereferencing is lazy, so you may specify a tree that hasn't been created yet.
 ///
 /// @param {string}        $tree [$iro-props-default-tree] - ID of the property tree to use
-/// @param {string | list} $key                           - Key of the property to read. If this is a list of keys, the map will be traversed in that order.
+/// @param {string | list} $key                            - Key of the property to read. If this is a list of keys, the map will be traversed in that order.
 ///
 /// @return {list} A special list that let's Ignis know that this is a lazy value.
 ///
 /// @throw If there was no match for $key and $default is null
 ///
-@function iro-props-ref($tree: $iro-props-default-tree, $key: null) {
+@function iro-props-ref($tree: $iro-props-default-tree, $key: null, $global: false) {
+    @if not $global {
+        $ns-key: iro-props-get-ns-key();
+
+        @if $ns-key != null {
+            $orig-key: $key;
+            $key:      $ns-key;
+
+            @if $orig-key != null {
+                @if type-of($orig-key) == list {
+                    @each $subkey in $orig-key {
+                        $key: append($key, $subkey);
+                    }
+                } @else {
+                    $key: append($key, $orig-key);
+                }
+            }
+        }
+    }
+
     @if $key == null {
         @return ('iro-prop-ref' $tree);
     } @else {
         @return ('iro-prop-ref' $tree $key);
     }
 }
+
+/// 
+/// Get the current namespace key.
+///
+/// @access private
+///
+@function iro-props-get-ns-key() {
+    $ctx: iro-context-get($iro-props-namespace-context-id, 'namespace');
+
+    @if $ctx == null {
+        @return null;
+    }
+
+    $data: nth($ctx, 2);
+    $key:  map-get($data, 'key');
+
+    @return $key;
+}
+
+@include iro-context-stack-create($iro-props-namespace-context-id);