[Rust] Flow graph API improvements

- Fixed some misc bugs
- Added real FlowGraphEdge type
- Added accessors for node edges
- Added interaction handler to the flow graph example to dump the flow graph to stdin
- Split out the flow graph API into smaller files

1 files changed, 113 insertions, 0 deletions

diff --git a/rust/src/flowgraph/edge.rs b/rust/src/flowgraph/edge.rs
new file mode 100644
index 00000000..7862f156
--- /dev/null
+++ b/rust/src/flowgraph/edge.rs
@@ -0,0 +1,113 @@
+use binaryninjacore_sys::*;
+
+use crate::flowgraph::node::FlowGraphNode;
+use crate::flowgraph::{BranchType, EdgePenStyle, ThemeColor};
+use crate::rc::{CoreArrayProvider, CoreArrayProviderInner, Ref};
+
+#[derive(Clone, Debug, PartialEq)]
+pub struct FlowGraphEdge {
+    pub branch_type: BranchType,
+    pub target: Ref<FlowGraphNode>,
+    pub points: Vec<Point>,
+    pub back_edge: bool,
+    pub style: EdgeStyle,
+}
+
+impl FlowGraphEdge {
+    pub fn from_raw(value: &BNFlowGraphEdge) -> Self {
+        let raw_points = unsafe { std::slice::from_raw_parts(value.points, value.pointCount) };
+        let points: Vec<_> = raw_points.iter().copied().map(Point::from).collect();
+        Self {
+            branch_type: value.type_,
+            target: unsafe { FlowGraphNode::from_raw(value.target) }.to_owned(),
+            points,
+            back_edge: value.backEdge,
+            style: value.style.into(),
+        }
+    }
+}
+
+impl CoreArrayProvider for FlowGraphEdge {
+    type Raw = BNFlowGraphEdge;
+    type Context = ();
+    type Wrapped<'a> = FlowGraphEdge;
+}
+
+unsafe impl CoreArrayProviderInner for FlowGraphEdge {
+    unsafe fn free(raw: *mut Self::Raw, count: usize, _: &Self::Context) {
+        BNFreeFlowGraphNodeEdgeList(raw, count);
+    }
+
+    unsafe fn wrap_raw<'a>(raw: &'a Self::Raw, _context: &'a Self::Context) -> Self::Wrapped<'a> {
+        Self::from_raw(raw)
+    }
+}
+
+#[derive(Clone, Copy, Debug, PartialEq, Default)]
+pub struct Point {
+    pub x: f32,
+    pub y: f32,
+}
+
+impl Point {
+    pub fn new(x: f32, y: f32) -> Self {
+        Self { x, y }
+    }
+}
+
+impl From<BNPoint> for Point {
+    fn from(value: BNPoint) -> Self {
+        Self {
+            x: value.x,
+            y: value.y,
+        }
+    }
+}
+
+impl From<Point> for BNPoint {
+    fn from(value: Point) -> Self {
+        Self {
+            x: value.x,
+            y: value.y,
+        }
+    }
+}
+
+#[derive(Clone, Copy, PartialEq, Eq, Hash, Debug)]
+pub struct EdgeStyle {
+    style: EdgePenStyle,
+    width: usize,
+    color: ThemeColor,
+}
+
+impl EdgeStyle {
+    pub fn new(style: EdgePenStyle, width: usize, color: ThemeColor) -> Self {
+        Self {
+            style,
+            width,
+            color,
+        }
+    }
+}
+
+impl Default for EdgeStyle {
+    fn default() -> Self {
+        Self::new(EdgePenStyle::SolidLine, 0, ThemeColor::AddressColor)
+    }
+}
+
+impl From<BNEdgeStyle> for EdgeStyle {
+    fn from(style: BNEdgeStyle) -> Self {
+        Self::new(style.style, style.width, style.color)
+    }
+}
+
+impl From<EdgeStyle> for BNEdgeStyle {
+    fn from(style: EdgeStyle) -> Self {
+        Self {
+            style: style.style,
+            width: style.width,
+            color: style.color,
+        }
+    }
+}