bendns' repos / mindus
mindustry logic execution, map- and schematic- parsing and rendering
Diffstat (limited to 'lemu/src/debug/info.rs')
-rw-r--r--lemu/src/debug/info.rs77
1 files changed, 77 insertions, 0 deletions
diff --git a/lemu/src/debug/info.rs b/lemu/src/debug/info.rs
new file mode 100644
index 0000000..6f370ba
--- /dev/null
+++ b/lemu/src/debug/info.rs
@@ -0,0 +1,77 @@
+use std::ops::Range;
+
+use crate::{
+ executor::Instruction,
+ memory::{LAddress, LVar},
+};
+
+pub struct DebugInfo<'s> {
+ variables: Box<[Option<VarInfo<'s>>; 255]>,
+ /// maps "start" to 0
+ pub labels: Vec<(&'s str, Instruction)>,
+}
+
+impl<'s> Default for DebugInfo<'s> {
+ fn default() -> Self {
+ Self {
+ variables: Box::new([const { None }; 255]),
+ labels: vec![],
+ }
+ }
+}
+
+impl<'s> DebugInfo<'s> {
+ pub fn label(&self, of: Instruction) -> Option<&'s str> {
+ self.labels.iter().find(|(_, i)| *i == of).map(|&(x, _)| x)
+ }
+}
+
+impl<'s> std::ops::Index<LAddress> for DebugInfo<'s> {
+ type Output = VarData<'s>;
+
+ fn index(&self, index: LAddress) -> &Self::Output {
+ &self.variables[index.address as usize]
+ .as_ref()
+ .unwrap()
+ .data
+ }
+}
+
+impl<'s> DebugInfo<'s> {
+ pub fn set_var(&mut self, at: u8, name: &'s str, span: Range<usize>) {
+ self.variables[at as usize] = Some(VarInfo {
+ data: VarData::Variable(name),
+ span,
+ });
+ }
+
+ pub fn set_const(&mut self, at: u8, var: impl Into<LVar<'s>>, span: Range<usize>) {
+ self.variables[at as usize] = Some(VarInfo {
+ data: VarData::Constant(var.into()),
+ span,
+ });
+ }
+}
+
+#[derive(Clone)]
+struct VarInfo<'s> {
+ pub data: VarData<'s>,
+ #[allow(dead_code)]
+ pub span: Range<usize>,
+}
+
+#[derive(Clone)]
+pub enum VarData<'s> {
+ Variable(&'s str),
+ // not necessary, but convenient.
+ Constant(LVar<'s>),
+}
+
+impl std::fmt::Display for VarData<'_> {
+ fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+ match self {
+ VarData::Variable(name) => f.write_str(name),
+ VarData::Constant(c) => write!(f, "{c}"),
+ }
+ }
+}