bendns' repos / mindus
mindustry logic execution, map- and schematic- parsing and rendering
Diffstat (limited to 'lemu/src/instructions/io.rs')
-rw-r--r--lemu/src/instructions/io.rs57
1 files changed, 57 insertions, 0 deletions
diff --git a/lemu/src/instructions/io.rs b/lemu/src/instructions/io.rs
new file mode 100644
index 0000000..b6564a8
--- /dev/null
+++ b/lemu/src/instructions/io.rs
@@ -0,0 +1,57 @@
+use super::{Flow, LInstruction};
+use crate::{
+ executor::{ExecutorContext, Memory},
+ memory::{LAddress, LVar},
+};
+use std::io::Write as Wr;
+
+#[derive(Debug)]
+pub struct Read<'v> {
+ // index guranteed to never be out of bounds
+ pub(crate) index: usize,
+ pub(crate) output: LAddress<'v>,
+ pub(crate) container: Memory,
+}
+
+impl<'v> LInstruction<'v> for Read<'v> {
+ fn run<W: Wr>(&self, exec: &mut ExecutorContext<'v, W>) -> Flow {
+ let to = exec.mem(self.container)[self.index];
+ let Some(out) = exec.get_mut(self.output) else {
+ return Flow::Continue;
+ };
+ *out = LVar::from(to);
+ Flow::Continue
+ }
+}
+
+#[derive(Debug)]
+pub struct Write<'v> {
+ // index guranteed to never be out of bounds
+ pub(crate) index: usize,
+ pub(crate) set: LAddress<'v>,
+ pub(crate) container: Memory,
+}
+
+impl<'v> LInstruction<'v> for Write<'v> {
+ fn run<W: Wr>(&self, exec: &mut ExecutorContext<'v, W>) -> Flow {
+ let LVar::Num(n) = exec.get(self.set) else {
+ return Flow::Continue;
+ };
+ exec.mem(self.container)[self.index] = n;
+ Flow::Continue
+ }
+}
+
+#[derive(Debug)]
+pub struct Print<'v> {
+ pub(crate) val: LAddress<'v>,
+}
+impl LInstruction<'_> for Print<'_> {
+ fn run<W: Wr>(&self, exec: &mut ExecutorContext<'_, W>) -> Flow {
+ let v = exec.get(self.val);
+ if let Some(o) = &mut exec.output {
+ write!(o, "{v}").unwrap();
+ }
+ Flow::Continue
+ }
+}