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Binary operators

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This commit is contained in:
Andrew Morris
2022-05-06 11:38:42 +10:00
parent 87a7125d8a
commit 87f1ffbd11
1 changed files with 64 additions and 1 deletions
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65
src/vstc/compile.rs
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@@ -262,7 +262,38 @@ fn compile_expression(
Fn(_) => std::panic!("Not implemented: Fn expression"),
Unary(_) => std::panic!("Not implemented: Unary expression"),
Update(_) => std::panic!("Not implemented: Update expression"),
Bin(_) => std::panic!("Not implemented: Bin expression"),
Bin(bin) => {
let left_reg = reg_allocator.allocate_numbered(&"_tmp".to_string());
compile_expression(
definition,
name_reg_map,
reg_allocator,
&bin.left,
&left_reg,
);
let right_reg = reg_allocator.allocate_numbered(&"_tmp".to_string());
compile_expression(
definition,
name_reg_map,
reg_allocator,
&bin.right,
&right_reg,
);
let mut instr = " ".to_string();
instr += get_binary_op_str(bin.op);
instr += " %";
instr += &left_reg;
instr += " %";
instr += &right_reg;
instr += " %";
instr += target_register;
definition.push(instr);
},
Assign(_) => std::panic!("Not implemented: Assign expression"),
Member(_) => std::panic!("Not implemented: Member expression"),
SuperProp(_) => std::panic!("Not implemented: SuperProp expression"),
@@ -315,3 +346,35 @@ fn compile_literal(lit: &swc_ecma_ast::Lit) -> String {
JSXText(_) => std::panic!("Not implemented: JSXText expression"),
};
}
fn get_binary_op_str(op: swc_ecma_ast::BinaryOp) -> &'static str {
use swc_ecma_ast::BinaryOp::*;
return match op {
EqEq => "op==",
NotEq => "op!=",
EqEqEq => "op===",
NotEqEq => "op!==",
Lt => "op<",
LtEq => "op<=",
Gt => "op>",
GtEq => "op>=",
LShift => "op<<",
RShift => "op>>",
ZeroFillRShift => "op>>>",
Add => "op+",
Sub => "op-",
Mul => "op*",
Div => "op/",
Mod => "op%",
BitOr => "op|",
BitXor => "op^",
BitAnd => "op&",
LogicalOr => "op||",
LogicalAnd => "op&&",
In => "in",
InstanceOf => "instanceof",
Exp => "op**",
NullishCoalescing => "op??",
};
}