library: impl Default for Parameter

This simplifies constructions a bit.

Author: fengalin

src/analysis/properties.rs

@@ -347,17 +347,8 @@ fn analyze_property(
                         .find_type(library::INTERNAL_NAMESPACE, "none")
                         .unwrap(),
                     c_type: "none".into(),
-                    instance_parameter: false,
                     direction: library::ParameterDirection::Return,
-                    transfer: library::Transfer::None,
-                    caller_allocates: false,
-                    nullable: library::Nullable(false),
-                    array_length: None,
-                    is_error: false,
-                    doc: None,
-                    scope: library::ParameterScope::None,
-                    closure: None,
-                    destroy: None,
+                    ..Default::default()
                 },
                 is_action: false,
                 is_detailed: false, /* well, technically this *is* an instance of a detailed

src/library.rs

@@ -12,8 +12,9 @@ use crate::{
     nameutil::split_namespace_name, traits::*, version::Version,
 };
 
-#[derive(Clone, Copy, Debug, Eq, PartialEq)]
+#[derive(Clone, Copy, Debug, Default, Eq, PartialEq)]
 pub enum Transfer {
+    #[default]
     None,
     Container,
     Full,
@@ -118,7 +119,7 @@ impl FromStr for ParameterScope {
     }
 }
 
-#[derive(Clone, Copy, Debug, Eq, PartialEq)]
+#[derive(Clone, Copy, Debug, Default, Eq, PartialEq)]
 pub struct Nullable(pub bool);
 
 impl Deref for Nullable {
@@ -520,7 +521,7 @@ pub struct Property {
     pub setter: Option<String>,
 }
 
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Default)]
 pub struct Parameter {
     pub name: String,
     pub typ: TypeId,

src/parser.rs

@@ -575,17 +575,11 @@ impl Library {
                 name: "error".into(),
                 typ: self.find_or_stub_type(ns_id, "GLib.Error"),
                 c_type: "GError**".into(),
-                instance_parameter: false,
                 direction: ParameterDirection::Out,
                 transfer: Transfer::Full,
-                caller_allocates: false,
                 nullable: Nullable(true),
-                array_length: None,
                 is_error: true,
-                doc: None,
-                scope: ParameterScope::None,
-                closure: None,
-                destroy: None,
+                ..Default::default()
             });
         }
 
@@ -1104,14 +1098,9 @@ impl Library {
                 instance_parameter: false,
                 direction: ParameterDirection::Out,
                 transfer: Transfer::Full,
-                caller_allocates: false,
                 nullable: Nullable(true),
-                array_length: None,
                 is_error: true,
-                doc: None,
-                scope: ParameterScope::None,
-                closure: None,
-                destroy: None,
+                ..Default::default()
             });
         }
         if let Some(ret) = ret {
@@ -1335,16 +1324,11 @@ impl Library {
                 typ: self.find_type(INTERNAL_NAMESPACE, "varargs").unwrap(),
                 c_type: String::new(),
                 instance_parameter,
-                direction: Default::default(),
-                transfer: Transfer::None,
-                caller_allocates: false,
-                nullable: Nullable(false),
-                array_length: None,
-                is_error: false,
                 doc,
                 scope,
                 closure,
                 destroy,
+                ..Default::default()
             })
         } else {
             Err(parser.fail_with_position(