From e7863402f35e558e1bd6c103765d5727e4e64033 Mon Sep 17 00:00:00 2001
From: Schrottkatze <git@schrottkatze.de>
Date: Mon, 1 Jan 2024 21:18:56 +0100
Subject: [PATCH] implement invert instruction

---
 crates/executor/src/debug/instructions/mod.rs | 15 ++++++++--
 crates/executor/src/debug/mod.rs              | 29 ++++++++++++-------
 crates/rpl/src/instructions/mod.rs            |  6 ++++
 testfiles/invert.rpl                          | 13 +++++++++
 4 files changed, 50 insertions(+), 13 deletions(-)
 create mode 100644 testfiles/invert.rpl

diff --git a/crates/executor/src/debug/instructions/mod.rs b/crates/executor/src/debug/instructions/mod.rs
index 85ec631..0c4b611 100644
--- a/crates/executor/src/debug/instructions/mod.rs
+++ b/crates/executor/src/debug/instructions/mod.rs
@@ -1,4 +1,4 @@
-pub mod Read {
+pub mod read {
     use image::{io::Reader as ImageReader, DynamicImage};
     use rpl::instructions::read::{Read, SourceType};
 
@@ -12,7 +12,7 @@ pub mod Read {
     }
 }
 
-pub mod Write {
+pub mod write {
     use image::{io::Reader as ImageReader, DynamicImage, ImageFormat};
     use rpl::instructions::write::{TargetFormat, TargetType, Write};
 
@@ -28,3 +28,14 @@ pub mod Write {
         );
     }
 }
+
+pub mod filters {
+    pub mod invert {
+        use image::DynamicImage;
+
+        pub fn invert(mut input_data: DynamicImage) -> DynamicImage {
+            input_data.invert();
+            input_data
+        }
+    }
+}
diff --git a/crates/executor/src/debug/mod.rs b/crates/executor/src/debug/mod.rs
index 61cae27..d56f546 100644
--- a/crates/executor/src/debug/mod.rs
+++ b/crates/executor/src/debug/mod.rs
@@ -1,19 +1,18 @@
+use rpl::instructions::{FilterInstruction, Instruction};
+
 use crate::{value::DynamicValue, Executor};
 mod instructions;
 
 pub struct DebugExecutor;
 
 impl Executor for DebugExecutor {
-    fn execute(
-        instruction: rpl::instructions::Instruction,
-        input: Option<DynamicValue>,
-    ) -> Option<DynamicValue> {
+    fn execute(instruction: Instruction, input: Option<DynamicValue>) -> Option<DynamicValue> {
         match instruction {
-            rpl::instructions::Instruction::Read(read_instruction) => Some(DynamicValue::Image(
-                instructions::Read::read(read_instruction),
+            Instruction::Read(read_instruction) => Some(DynamicValue::Image(
+                instructions::read::read(read_instruction),
             )),
-            rpl::instructions::Instruction::Write(write_instruction) => {
-                instructions::Write::write(
+            Instruction::Write(write_instruction) => {
+                instructions::write::write(
                     write_instruction,
                     match input {
                         Some(DynamicValue::Image(img)) => img,
@@ -22,9 +21,17 @@ impl Executor for DebugExecutor {
                 );
                 None
             }
-            rpl::instructions::Instruction::Math(_) => todo!(),
-            rpl::instructions::Instruction::Blend(_) => todo!(),
-            rpl::instructions::Instruction::Noise(_) => todo!(),
+            Instruction::Math(_) => todo!(),
+            Instruction::Blend(_) => todo!(),
+            Instruction::Noise(_) => todo!(),
+            Instruction::Filter(filter_instruction) => match filter_instruction {
+                FilterInstruction::Invert => Some(DynamicValue::Image(
+                    instructions::filters::invert::invert(match input {
+                        Some(DynamicValue::Image(img)) => img,
+                        _ => panic!("invalid value type for invert"),
+                    }),
+                )),
+            },
         }
     }
 }
diff --git a/crates/rpl/src/instructions/mod.rs b/crates/rpl/src/instructions/mod.rs
index dee2608..9fb8a56 100644
--- a/crates/rpl/src/instructions/mod.rs
+++ b/crates/rpl/src/instructions/mod.rs
@@ -10,6 +10,7 @@ pub enum Instruction {
     Math(MathInstruction),
     Blend(BlendInstruction),
     Noise(NoiseInstruction),
+    Filter(FilterInstruction),
 }
 
 #[derive(Serialize, Deserialize, PartialEq, Eq, Debug)]
@@ -39,3 +40,8 @@ pub enum NoiseInstruction {
     Simplex,
     Voronoi,
 }
+
+#[derive(Serialize, Deserialize, PartialEq, Eq, Debug)]
+pub enum FilterInstruction {
+    Invert,
+}
diff --git a/testfiles/invert.rpl b/testfiles/invert.rpl
new file mode 100644
index 0000000..d17fe1a
--- /dev/null
+++ b/testfiles/invert.rpl
@@ -0,0 +1,13 @@
+(
+	[
+		Read((
+			source: File("/home/jade/example/file.png"),
+			format: Png
+		)),
+		Filter(Invert),
+		Write((
+			target: File("/home/jade/example/inverted.jpg"),
+			format: Jpeg
+		))
+	]
+)