Add a couple of comments

1 files changed, 5 insertions, 2 deletions

diff --git a/include/mbgl/style/expression/parsing_context.hpp b/include/mbgl/style/expression/parsing_context.hpp
index 063b3489dd..96dc7172f4 100644
--- a/include/mbgl/style/expression/parsing_context.hpp
+++ b/include/mbgl/style/expression/parsing_context.hpp
@@ -74,6 +74,9 @@ public:
         omitTypeAnnotations
     };
 
+    /*
+        Parse the given style-spec JSON value as an expression.
+    */
     ParseResult parseExpression(const mbgl::style::conversion::Convertible& value,
                                 TypeAnnotationOption typeAnnotationOption = includeTypeAnnotations);
 
@@ -86,7 +89,7 @@ public:
                                 TypeAnnotationOption typeAnnotationOption = includeTypeAnnotations);
 
     /*
-        Parse a child expression.
+        Parse a child expression. For use by individual Expression::parse() methods.
     */
     ParseResult parse(const mbgl::style::conversion::Convertible&,
                       std::size_t,
@@ -94,7 +97,7 @@ public:
                       TypeAnnotationOption typeAnnotationOption = includeTypeAnnotations);
     
     /*
-        Parse a child expression.
+        Parse a child expression.  For use by individual Expression::parse() methods.
     */
     ParseResult parse(const mbgl::style::conversion::Convertible&,
                       std::size_t index,