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window_draw_list: Add #[must_use] to relevant types

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It is easy to forget to call .build() on these temporary types.

To avoid this kind of error, we emit a compiler warning when .build() is
forgotten.
This commit is contained in:
Malik Olivier Boussejra 2018-05-23 17:17:18 +09:00
parent e374eb9f55
commit 17504fd723
1 changed files with 5 additions and 0 deletions
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5
src/window_draw_list.rs
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@ -262,6 +262,7 @@ impl<'ui> WindowDrawList<'ui> {
}
/// Represents a line about to be drawn
#[must_use = "should call .build() to draw the object"]
pub struct Line<'ui> {
p1: ImVec2,
p2: ImVec2,
@ -307,6 +308,7 @@ impl<'ui> Line<'ui> {
}
/// Represents a rectangle about to be drawn
#[must_use = "should call .build() to draw the object"]
pub struct Rect<'ui> {
p1: ImVec2,
p2: ImVec2,
@ -410,6 +412,7 @@ impl<'ui> Rect<'ui> {
}
/// Represents a triangle about to be drawn on the window
#[must_use = "should call .build() to draw the object"]
pub struct Triangle<'ui> {
p1: ImVec2,
p2: ImVec2,
@ -479,6 +482,7 @@ impl<'ui> Triangle<'ui> {
}
/// Represents a circle about to be drawn
#[must_use = "should call .build() to draw the object"]
pub struct Circle<'ui> {
center: ImVec2,
radius: f32,
@ -553,6 +557,7 @@ impl<'ui> Circle<'ui> {
}
/// Represents a Bezier curve about to be drawn
#[must_use = "should call .build() to draw the object"]
pub struct BezierCurve<'ui> {
pos0: ImVec2,
cp0: ImVec2,