Merge pull request #416 from julia-vscode/fix-configitem-bug

Fix a bug how missing values in ConfigurationItem are handled

src/protocol/configuration.jl

@@ -32,7 +32,7 @@ end
 end
 
 @json_read mutable struct CompletionItemKindCapabilities
-    valueSet::Union{Nothing,Vector{Int}}    
+    valueSet::Union{Nothing,Vector{Int}}
 end
 
 @json_read mutable struct CompletionCapabilities
@@ -43,7 +43,7 @@ end
 end
 
 @json_read mutable struct HoverCapabilities
-    dynamicRegistration::Union{Nothing,Bool}    
+    dynamicRegistration::Union{Nothing,Bool}
     contentFormat::Union{Nothing,Vector{String}}
 end
 
@@ -129,7 +129,7 @@ end
 
 
 # Server Response
-mutable struct CompletionOptions 
+mutable struct CompletionOptions
     resolveProvider::Bool
     triggerCharacters::Vector{String}
 end
@@ -234,11 +234,25 @@ mutable struct DidChangeConfiguration
     settings::Any
 end
 
-mutable struct ConfigurationItem
-    scopeUri::Union{Nothing,String}    
+@json_read mutable struct ConfigurationItem
+    scopeUri::Union{Nothing,String}
     section::Union{Nothing,String}
 end
 
+function JSON.lower(a::ConfigurationItem)
+    d = Dict{String, Any}()
+
+    if a.scopeUri!==nothing
+        d["scopeUri"] = a.scopeUri
+    end
+
+    if a.section!==nothing
+        d["section"] = a.section
+    end
+
+    return d
+end
+
 mutable struct ConfigurationParams
     items::Vector{ConfigurationItem}
 end