intercal/not-python2
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assignment: Add variable assignment

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* Syntax for x = y
* Compiler creates Inst::Store thunks
* New Vm::store function

Signed-off-by: Alek Ratzloff <alekratz@gmail.com>
This commit is contained in:
Alek Ratzloff
2023-04-02 01:55:51 -07:00
parent bfe7ca33bd
commit 4d005494a3
6 changed files with 6767 additions and 2376 deletions
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14
src/compile/compiler.rs
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@@ -37,7 +37,17 @@ impl Compiler {
fn emit_stmt(&mut self, stmt: &SpStmt) -> Thunk {
match stmt.inner() {
Stmt::Assign(_lhs_expr, _expr) => todo!(),
Stmt::Assign(lhs_expr, expr) => match lhs_expr.inner() {
AssignLhs::Name(n) => {
let name = self.scope().lookup_scoped(n).unwrap();
let mut thunk = self.emit_expr(expr);
thunk.push(Inst::Store(name));
thunk
}
AssignLhs::Complex(_, _) => {
todo!("Complex LHS foo.bar assign")
}
},
Stmt::Expr(expr) => {
let mut thunk = self.emit_expr(expr);
thunk.push(Inst::Pop);
@@ -91,7 +101,7 @@ impl Compiler {
fn gather_names(&mut self, stmts: &Vec<SpStmt>) {
for stmt in stmts {
match stmt.inner() {
Stmt::Assign(lhs, _) => match lhs {
Stmt::Assign(lhs, _) => match lhs.inner() {
AssignLhs::Name(name) => {
self.scope_mut().insert_local(name);
}