all: mark pref.Preferences field as immutable

vlib/v/builder/builder.v

@@ -15,8 +15,8 @@ pub:
 	compiled_dir        string // contains os.real_path() of the dir of the final file beeing compiled, or the dir itself when doing `v .`
 	module_path         string
 mut:
-	checker             checker.Checker
 	pref                &pref.Preferences
+	checker             checker.Checker
 	global_scope        &ast.Scope
 	out_name_c          string
 	out_name_js         string

vlib/v/checker/checker.v

@@ -25,6 +25,7 @@ const (
 )
 
 pub struct Checker {
+	pref             &pref.Preferences // Preferences shared from V struct
 pub mut:
 	table            &table.Table
 	file             ast.File
@@ -41,7 +42,6 @@ pub mut:
 	global_names     []string
 	locked_names     []string // vars that are currently locked
 	rlocked_names    []string // vars that are currently read-locked
-	pref             &pref.Preferences // Preferences shared from V struct
 	in_for_count     int // if checker is currently in an for loop
 	// checked_ident  string // to avoid infinit checker loops
 	returns          bool

vlib/v/doc/doc.v

@@ -14,9 +14,9 @@ import v.token
 import v.util
 
 pub struct Doc {
+	prefs          &pref.Preferences
 pub mut:
 	input_path     string
-	prefs          &pref.Preferences = &pref.Preferences{}
 	table          &table.Table = &table.Table{}
 	checker        checker.Checker = checker.Checker{
 	table: 0
@@ -380,10 +380,18 @@ pub fn (mut d Doc) generate_from_ast(file_ast ast.File, orig_mod_name string) []
 				}
 				node.attrs['category'] = 'Constants'
 			}
-			ast.EnumDecl { node.attrs['category'] = 'Enums' }
-			ast.InterfaceDecl { node.attrs['category'] = 'Interfaces' }
-			ast.StructDecl { node.attrs['category'] = 'Structs' }
-			ast.TypeDecl { node.attrs['category'] = 'Typedefs' }
+			ast.EnumDecl {
+				node.attrs['category'] = 'Enums'
+			}
+			ast.InterfaceDecl {
+				node.attrs['category'] = 'Interfaces'
+			}
+			ast.StructDecl {
+				node.attrs['category'] = 'Structs'
+			}
+			ast.TypeDecl {
+				node.attrs['category'] = 'Typedefs'
+			}
 			ast.FnDecl {
 				if stmt.is_deprecated {
 					continue
@@ -402,8 +410,7 @@ pub fn (mut d Doc) generate_from_ast(file_ast ast.File, orig_mod_name string) []
 						}
 					}
 				}
-				node.attrs['category'] = if node.attrs['parent'] in ['void', ''] ||
-					!node.attrs.exists('parent') { 'Functions' } else { 'Methods' }
+				node.attrs['category'] = if node.attrs['parent'] in ['void', ''] || !node.attrs.exists('parent') { 'Functions' } else { 'Methods' }
 			}
 			else {}
 		}
@@ -415,7 +422,6 @@ pub fn (mut d Doc) generate_from_ast(file_ast ast.File, orig_mod_name string) []
 		}
 		prev_comments = []
 	}
-
 	return contents
 }
 
@@ -442,7 +448,6 @@ pub fn (mut d Doc) generate_from_ast_with_pos(file_ast ast.File, pos int) []DocN
 		}
 		contents << l_node
 	}
-
 	return contents
 }
 

vlib/v/parser/parser.v

@@ -17,6 +17,7 @@ import time
 pub struct Parser {
 	file_name         string // "/home/user/hello.v"
 	file_name_dir     string // "/home/user"
+	pref              &pref.Preferences
 mut:
 	scanner           &scanner.Scanner
 	comments_mode     scanner.CommentsMode = .skip_comments // see comment in parse_file
@@ -34,7 +35,6 @@ mut:
 	inside_for        bool
 	inside_fn         bool
 	inside_str_interp bool
-	pref              &pref.Preferences
 	builtin_mod       bool // are we in the `builtin` module?
 	mod               string // current module name
 	attrs             []table.Attr // attributes before next decl stmt