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REFACTOR: reference the Composite types directly.

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This commit is contained in:
Jeremy Wall 2019-06-30 17:31:49 -05:00
parent b6c208fb97
commit c6037f6ea7
1 changed files with 11 additions and 9 deletions
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20
src/build/opcode/mod.rs
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@ -32,6 +32,8 @@ pub enum Composite {
Tuple(Vec<(String, Value)>), Tuple(Vec<(String, Value)>),
} }
use Composite::{List, Tuple};
#[derive(Debug, PartialEq, Clone)] #[derive(Debug, PartialEq, Clone)]
pub enum Value { pub enum Value {
// Binding names. // Binding names.
@ -109,9 +111,9 @@ impl VM {
Op::Div => self.op_div()?, Op::Div => self.op_div()?,
Op::Bind => self.op_bind()?, Op::Bind => self.op_bind()?,
// Add a Composite list value to the stack // Add a Composite list value to the stack
Op::InitList => self.composite_push(Composite::List(Vec::new()))?, Op::InitList => self.composite_push(List(Vec::new()))?,
// Add a composite tuple value to the stack // Add a composite tuple value to the stack
Op::InitTuple => self.composite_push(Composite::Tuple(Vec::new()))?, Op::InitTuple => self.composite_push(Tuple(Vec::new()))?,
Op::FIELD => self.op_field()?, Op::FIELD => self.op_field()?,
Op::Element => self.op_element()?, Op::Element => self.op_element()?,
Op::Cp => self.op_copy()?, Op::Cp => self.op_copy()?,
@ -197,11 +199,11 @@ impl VM {
}; };
// get composite tuple from stack // get composite tuple from stack
let tpl = self.pop()?; let tpl = self.pop()?;
if let Value::C(Composite::Tuple(mut flds)) = tpl { if let Value::C(Tuple(mut flds)) = tpl {
// add name and value to tuple // add name and value to tuple
self.merge_field_into_tuple(&mut flds, name, val)?; self.merge_field_into_tuple(&mut flds, name, val)?;
// place composite tuple back on stack // place composite tuple back on stack
self.composite_push(Composite::Tuple(flds))?; self.composite_push(Tuple(flds))?;
} else { } else {
return Err(Error {}); return Err(Error {});
}; };
@ -213,11 +215,11 @@ impl VM {
let val = self.pop()?; let val = self.pop()?;
// get next value. It should be a Composite list. // get next value. It should be a Composite list.
let tpl = self.pop()?; let tpl = self.pop()?;
if let Value::C(Composite::List(mut elems)) = tpl { if let Value::C(List(mut elems)) = tpl {
// add value to list // add value to list
elems.push(val); elems.push(val);
// Add that value to the list and put list back on stack. // Add that value to the list and put list back on stack.
self.composite_push(Composite::List(elems))?; self.composite_push(List(elems))?;
} else { } else {
return Err(Error {}); return Err(Error {});
}; };
@ -227,10 +229,10 @@ impl VM {
fn op_copy(&mut self) -> Result<(), Error> { fn op_copy(&mut self) -> Result<(), Error> {
// TODO Use Cow pointers for this? // TODO Use Cow pointers for this?
// get next value. It should be a Composite Tuple. // get next value. It should be a Composite Tuple.
if let Value::C(Composite::Tuple(flds)) = self.pop()? { if let Value::C(Tuple(flds)) = self.pop()? {
// Make a copy of the original // Make a copy of the original
let original = Composite::Tuple(flds.clone()); let original = Tuple(flds.clone());
let copy = Composite::Tuple(flds); let copy = Tuple(flds);
// Put the original on the Stack as well as the copy // Put the original on the Stack as well as the copy
self.composite_push(original)?; self.composite_push(original)?;
self.composite_push(copy)?; self.composite_push(copy)?;