Add "class-filtering" config option.

README.md

@@ -185,6 +185,10 @@ You can change all available options using `gocode set` command. The config file
 
    A boolean option. If set to true, gocode will perform case-insensitive matching when doing prefix-based filtering. Default: **false**.
 
+ - *class-filtering*
+
+   A boolean option. Enables or disables gocode's feature where it performs class-based filtering if partial input matches corresponding class keyword: const, var, type, func, package. Default: **true**.
+
 ### Debugging
 
 If something went wrong, the first thing you may want to do is manually start the gocode daemon with a debug mode enabled and in a separate terminal window. It will show you all the stack traces, panics if any and additional info about autocompletion requests. Shutdown the daemon if it was already started and run a new one explicitly with a debug mode enabled:

autocompletecontext.go

@@ -393,17 +393,19 @@ func (c *auto_complete_context) apropos(file []byte, filename string, cursor int
 	}
 
 	class := decl_invalid
-	switch cc.partial {
-	case "const":
-		class = decl_const
-	case "var":
-		class = decl_var
-	case "type":
-		class = decl_type
-	case "func":
-		class = decl_func
-	case "package":
-		class = decl_package
+	if g_config.ClassFiltering {
+		switch cc.partial {
+		case "const":
+			class = decl_const
+		case "var":
+			class = decl_var
+		case "type":
+			class = decl_type
+		case "func":
+			class = decl_func
+		case "package":
+			class = decl_package
+		}
 	}
 
 	if cc.decl_import {

config.go

@@ -31,6 +31,7 @@ type config struct {
 	UnimportedPackages bool   `json:"unimported-packages"`
 	Partials           bool   `json:"partials"`
 	IgnoreCase         bool   `json:"ignore-case"`
+	ClassFiltering     bool   `json:"class-filtering"`
 }
 
 var g_config_desc = map[string]string{
@@ -45,6 +46,7 @@ var g_config_desc = map[string]string{
 	"unimported-packages": "If set to {true}, gocode will try to import certain known packages automatically for identifiers which cannot be resolved otherwise. Currently only a limited set of standard library packages is supported.",
 	"partials":            "If set to {false}, gocode will not filter autocompletion results based on entered prefix before the cursor. Instead it will return all available autocompletion results viable for a given context. Whether this option is set to {true} or {false}, gocode will return a valid prefix length for output formats which support it. Setting this option to a non-default value may result in editor misbehaviour.",
 	"ignore-case":         "If set to {true}, gocode will perform case-insensitive matching when doing prefix-based filtering.",
+	"class-filtering":     "Enables or disables gocode's feature where it performs class-based filtering if partial input matches corresponding class keyword: const, var, type, func, package.",
 }
 
 var g_default_config = config{
@@ -58,6 +60,7 @@ var g_default_config = config{
 	UnimportedPackages: false,
 	Partials:           true,
 	IgnoreCase:         false,
+	ClassFiltering:     true,
 }
 var g_config = g_default_config