[librsvg: 1/4] Use matches! macro as suggested by clippy

[Federico Mena Quintero <federico src gnome org>]

commit b48152d863fa6a0ab200f0970b4758be425da66f
Author: Sven Neumann <sven svenfoo org>
Date:   Thu Oct 15 19:57:45 2020 +0200

    Use matches! macro as suggested by clippy

 rsvg_internals/src/aspect_ratio.rs  | 12 ++++++------
 rsvg_internals/src/drawing_ctx.rs   |  6 ++----
 rsvg_internals/src/href.rs          |  9 +++++----
 rsvg_internals/src/node.rs          | 13 ++++---------
 rsvg_internals/src/pattern.rs       |  6 ++----
 rsvg_internals/src/properties.rs    |  6 ++----
 rsvg_internals/src/property_defs.rs |  6 ++----
 7 files changed, 23 insertions(+), 35 deletions(-)
---
diff --git a/rsvg_internals/src/aspect_ratio.rs b/rsvg_internals/src/aspect_ratio.rs
index 3dccfd98..ac02c6dc 100644
--- a/rsvg_internals/src/aspect_ratio.rs
+++ b/rsvg_internals/src/aspect_ratio.rs
@@ -20,6 +20,8 @@
 //! [`AspectRatio`]: struct.AspectRatio.html
 //! [spec]: https://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute
 
+use cssparser::{BasicParseError, Parser};
+use matches::matches;
 use std::ops::Deref;
 
 use crate::error::*;
@@ -27,7 +29,6 @@ use crate::parsers::Parse;
 use crate::rect::Rect;
 use crate::transform::Transform;
 use crate::viewbox::ViewBox;
-use cssparser::{BasicParseError, Parser};
 
 #[derive(Debug, Copy, Clone, PartialEq, Eq)]
 pub struct AspectRatio {
@@ -113,14 +114,13 @@ impl Align1D {
 
 impl AspectRatio {
     pub fn is_slice(&self) -> bool {
-        match self.align {
+        matches!(
+            self.align,
             Some(Align {
                 fit: FitMode::Slice,
                 ..
-            }) => true,
-
-            _ => false,
-        }
+            })
+        )
     }
 
     pub fn compute(&self, vbox: &ViewBox, viewport: &Rect) -> Rect {
diff --git a/rsvg_internals/src/drawing_ctx.rs b/rsvg_internals/src/drawing_ctx.rs
index f6436995..d8a95ce7 100644
--- a/rsvg_internals/src/drawing_ctx.rs
+++ b/rsvg_internals/src/drawing_ctx.rs
@@ -1,6 +1,7 @@
 //! The main context structure which drives the drawing process.
 
 use float_cmp::approx_eq;
+use matches::matches;
 use once_cell::sync::Lazy;
 use pango::FontMapExt;
 use regex::{Captures, Regex};
@@ -1914,10 +1915,7 @@ fn compute_text_box(
 
 // FIXME: should the pango crate provide this like PANGO_GRAVITY_IS_VERTICAL() ?
 fn gravity_is_vertical(gravity: pango::Gravity) -> bool {
-    match gravity {
-        pango::Gravity::East | pango::Gravity::West => true,
-        _ => false,
-    }
+    matches!(gravity, pango::Gravity::East | pango::Gravity::West)
 }
 
 /// escape quotes and backslashes with backslash
diff --git a/rsvg_internals/src/href.rs b/rsvg_internals/src/href.rs
index 1ad294bd..b2a802cf 100644
--- a/rsvg_internals/src/href.rs
+++ b/rsvg_internals/src/href.rs
@@ -8,6 +8,7 @@
 //! other.  We implement that logic in this module.
 
 use markup5ever::{expanded_name, local_name, namespace_url, ns, ExpandedName};
+use matches::matches;
 
 /// Returns whether the attribute is either of `xlink:href` or `href`.
 ///
@@ -32,10 +33,10 @@ use markup5ever::{expanded_name, local_name, namespace_url, ns, ExpandedName};
 /// }
 /// ```
 pub fn is_href(name: &ExpandedName) -> bool {
-    match *name {
-        expanded_name!(xlink "href") | expanded_name!("", "href") => true,
-        _ => false,
-    }
+    matches!(
+        *name,
+        expanded_name!(xlink "href") | expanded_name!("", "href")
+    )
 }
 
 /// Sets an `href` attribute in preference over an `xlink:href` one.
diff --git a/rsvg_internals/src/node.rs b/rsvg_internals/src/node.rs
index 4a811ed6..b7933cfb 100644
--- a/rsvg_internals/src/node.rs
+++ b/rsvg_internals/src/node.rs
@@ -12,6 +12,7 @@
 //! [`NodeData`]: struct.NodeData.html
 
 use markup5ever::QualName;
+use matches::matches;
 use std::cell::{Ref, RefMut};
 use std::fmt;
 
@@ -193,17 +194,11 @@ pub trait NodeBorrow {
 
 impl NodeBorrow for Node {
     fn is_element(&self) -> bool {
-        match *self.borrow() {
-            NodeData::Element(_) => true,
-            _ => false,
-        }
+        matches!(*self.borrow(), NodeData::Element(_))
     }
 
     fn is_chars(&self) -> bool {
-        match *self.borrow() {
-            NodeData::Text(_) => true,
-            _ => false,
-        }
+        matches!(*self.borrow(), NodeData::Text(_))
     }
 
     fn borrow_chars(&self) -> Ref<Chars> {
@@ -231,7 +226,7 @@ impl NodeBorrow for Node {
 #[macro_export]
 macro_rules! is_element_of_type {
     ($node:expr, $element_type:ident) => {
-        matches::matches!(
+        matches!(
             *$node.borrow_element(),
             crate::element::Element::$element_type(_)
         )
diff --git a/rsvg_internals/src/pattern.rs b/rsvg_internals/src/pattern.rs
index d921688a..8436f34d 100644
--- a/rsvg_internals/src/pattern.rs
+++ b/rsvg_internals/src/pattern.rs
@@ -1,6 +1,7 @@
 //! The `pattern` element.
 
 use markup5ever::{expanded_name, local_name, namespace_url, ns};
+use matches::matches;
 use std::cell::RefCell;
 
 use crate::aspect_ratio::*;
@@ -263,10 +264,7 @@ impl UnresolvedChildren {
     }
 
     fn is_resolved(&self) -> bool {
-        match *self {
-            UnresolvedChildren::Unresolved => false,
-            _ => true,
-        }
+        !matches!(*self, UnresolvedChildren::Unresolved)
     }
 
     fn resolve_from_fallback(&self, fallback: &UnresolvedChildren) -> UnresolvedChildren {
diff --git a/rsvg_internals/src/properties.rs b/rsvg_internals/src/properties.rs
index b2ad2245..775f9551 100644
--- a/rsvg_internals/src/properties.rs
+++ b/rsvg_internals/src/properties.rs
@@ -24,6 +24,7 @@ use cssparser::{
 use markup5ever::{
     expanded_name, local_name, namespace_url, ns, ExpandedName, LocalName, QualName,
 };
+use matches::matches;
 use std::collections::HashSet;
 
 use crate::attributes::Attributes;
@@ -106,10 +107,7 @@ impl Default for SpecifiedValues {
 
 impl ComputedValues {
     pub fn is_overflow(&self) -> bool {
-        match self.overflow() {
-            Overflow::Auto | Overflow::Visible => true,
-            _ => false,
-        }
+        matches!(self.overflow(), Overflow::Auto | Overflow::Visible)
     }
 
     pub fn is_visible(&self) -> bool {
diff --git a/rsvg_internals/src/property_defs.rs b/rsvg_internals/src/property_defs.rs
index ee1b8f2a..8c01a1af 100644
--- a/rsvg_internals/src/property_defs.rs
+++ b/rsvg_internals/src/property_defs.rs
@@ -44,6 +44,7 @@
 use std::convert::TryInto;
 
 use cssparser::{Parser, Token};
+use matches::matches;
 
 use crate::dasharray::Dasharray;
 use crate::error::*;
@@ -882,10 +883,7 @@ make_property!(
 
 impl WritingMode {
     pub fn is_vertical(self) -> bool {
-        match self {
-            WritingMode::Tb | WritingMode::TbRl => true,
-            _ => false,
-        }
+        matches!(self, WritingMode::Tb | WritingMode::TbRl)
     }
 }