[Darwin] Improve documentation for enum array propertiesupstream/variable_label_placement

2 files changed, 21 insertions, 1 deletions

diff --git a/platform/darwin/scripts/generate-style-code.js b/platform/darwin/scripts/generate-style-code.js
index 1e7b2a3973..2eabd0a92b 100755
--- a/platform/darwin/scripts/generate-style-code.js
+++ b/platform/darwin/scripts/generate-style-code.js
@@ -352,6 +352,9 @@ global.propertyDoc = function (propertyName, property, layerType, kind) {
         if (property.type === 'enum') {
             doc += '* Any of the following constant string values:\n';
             doc += Object.keys(property.values).map(value => '  * `' + value + '`: ' + property.values[value].doc).join('\n') + '\n';
+        } else if (property.type === 'array' && property.value === 'enum') {
+            doc += '* Constant array, whose each element is any of the following constant string values:\n';
+            doc += Object.keys(property.values).map(value => '  * `' + value + '`: ' + property.values[value].doc).join('\n') + '\n';
         }
         doc += '* Predefined functions, including mathematical and string operators\n' +
             '* Conditional expressions\n' +
@@ -426,6 +429,8 @@ global.describeType = function (property) {
                     return '`CGVector`';
                 case 'position':
                     return '`MGLSphericalPosition`';
+                case 'anchor':
+                    return '`MGLTextAnchor` array';
                 default:
                     return 'array';
             }
diff --git a/platform/darwin/src/MGLSymbolStyleLayer.h b/platform/darwin/src/MGLSymbolStyleLayer.h
index ad792880e7..cf2c1466e7 100644
--- a/platform/darwin/src/MGLSymbolStyleLayer.h
+++ b/platform/darwin/src/MGLSymbolStyleLayer.h
@@ -1589,7 +1589,22 @@ MGL_EXPORT
  
  You can set this property to an expression containing any of the following:
  
- * Constant array values
+ * Constant `MGLTextAnchor` array values
+ * Constant array, whose each element is any of the following constant string
+ values:
+   * `center`: The center of the text is placed closest to the anchor.
+   * `left`: The left side of the text is placed closest to the anchor.
+   * `right`: The right side of the text is placed closest to the anchor.
+   * `top`: The top of the text is placed closest to the anchor.
+   * `bottom`: The bottom of the text is placed closest to the anchor.
+   * `top-left`: The top left corner of the text is placed closest to the
+ anchor.
+   * `top-right`: The top right corner of the text is placed closest to the
+ anchor.
+   * `bottom-left`: The bottom left corner of the text is placed closest to the
+ anchor.
+   * `bottom-right`: The bottom right corner of the text is placed closest to
+ the anchor.
  * Predefined functions, including mathematical and string operators
  * Conditional expressions
  * Variable assignments and references to assigned variables