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This commit is contained in:
Devin Bidwell
2024-12-01 18:45:48 -07:00
parent 548d826078
commit 3902b5ca76
3 changed files with 52 additions and 21 deletions
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50
src/compiler/mod.rs
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@@ -57,12 +57,19 @@ impl<'a> Compiler<'a> {
fn get_variable_index(&self, var_name: &str) -> Result<i32, CompileError> {
let mut offset = 0;
println!("Variable Scope: {:?}", self.variable_scope);
for scope in &self.variable_scope {
let scope_size = scope.len() as i32;
if let Some(index) = scope.get(var_name) {
return Ok(*index + offset);
let index = (scope_size - *index) + offset;
println!("Found variable {} at index {}", var_name, index);
return Ok(index);
}
offset += scope.len() as i32;
offset += scope_size;
}
Err(CompileError::VariableNotFound(var_name.to_owned()))
@@ -168,34 +175,48 @@ impl<'a> Compiler<'a> {
match left {
Expression::Literal(Literal::Number(num)) => {
compiler.write_output(format!("push {num}"))?;
compiler.push_stack(&format!("{op}ExpressionLeft"))?;
}
Expression::Variable(var_name) => {
let var_offset = compiler.get_variable_index(&var_name)?;
compiler.write_output(format!("sub sp sp {var_offset}"))?;
compiler.write_output("peek r0")?;
compiler.write_output(format!("add sp sp {var_offset}"))?;
compiler.write_output("push r0")?;
compiler.write_output(format!("sub r15 sp {var_offset}"))?;
compiler.write_output("get r15 db r15")?;
compiler.write_output("push r15")?;
compiler.push_stack(&format!("{op}ExpressionLeft"))?;
}
Expression::BinaryExpression(expr) => {
compiler.binary_expression(expr)?;
}
Expression::PriorityExpression(expr) => match *expr {
Expression::BinaryExpression(expr) => {
compiler.binary_expression(expr)?;
}
_ => todo!(),
},
_ => todo!(),
};
match right {
Expression::Literal(Literal::Number(num)) => {
compiler.write_output(format!("push {num}"))?;
compiler.push_stack(&format!("{op}ExpressionRight"))?;
}
Expression::Variable(var_name) => {
let var_offset = compiler.get_variable_index(&var_name)?;
compiler.write_output(format!("sub sp sp {}", var_offset + 1))?;
compiler.write_output("peek r0")?;
compiler.write_output(format!("add sp sp {}", var_offset + 1))?;
compiler.write_output("push r0")?;
compiler.write_output(format!("sub r15 sp {}", var_offset))?;
compiler.write_output("get r15 db r15")?;
compiler.write_output("push r15")?;
compiler.push_stack(&format!("{op}ExpressionRight"))?;
}
Expression::BinaryExpression(expr) => {
compiler.binary_expression(expr)?;
}
Expression::PriorityExpression(expr) => match *expr {
Expression::BinaryExpression(expr) => {
compiler.binary_expression(expr)?;
}
_ => todo!(),
},
_ => todo!(),
};
@@ -238,6 +259,8 @@ impl<'a> Compiler<'a> {
let mut to_write = String::new();
self.push_stack(&format!("{function_name}ReturnAddress"))?;
let mut iter_index = 0;
for arg in expr.arguments {
match arg {
@@ -247,10 +270,9 @@ impl<'a> Compiler<'a> {
Expression::Variable(var_name) => {
let index = self.get_variable_index(&var_name)?;
to_write.push_str(&format!("sub sp sp {index}\n"));
to_write.push_str("peek r0\n");
to_write.push_str(&format!("add sp sp {index}\n"));
to_write.push_str("push r0\n");
to_write.push_str(&format!("sub r15 sp {index}\n"));
to_write.push_str("get r15 db r15\n");
to_write.push_str("push r15\n");
}
Expression::BinaryExpression(expr) => {
self.binary_expression(expr)?;