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clean up some code, need to test more

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This commit is contained in:
CrescentonC 2021-07-15 10:47:03 +08:00
parent c5bef86001
commit 7823851fd6
1 changed files with 38 additions and 111 deletions
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149
nac3core/src/typecheck/expression_inference.rs
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@ -19,112 +19,35 @@ impl<'a> ast::fold::Fold<Option<Type>> for InferenceContext<'a> {
fn fold_expr(&mut self, node: ast::Expr<Option<Type>>) -> Result<ast::Expr<Self::TargetU>, Self::Error> {
assert_eq!(node.custom, None);
// pre-fold
let mut expr = node;
match &expr.node {
ast::ExprKind::ListComp { .. } => expr = self.prefold_list_comprehension(expr)?,
_ => expr = rustpython_parser::ast::fold::fold_expr(self, expr)?
expr = match &expr.node {
ast::ExprKind::ListComp { .. } => self.prefold_list_comprehension(expr)?,
_ => rustpython_parser::ast::fold::fold_expr(self, expr)?
};
match &expr.node {
ast::ExprKind::Constant {value, kind: _} =>
Ok(ast::Expr {
location: expr.location,
custom: self.infer_constant(value)?,
node: expr.node
}),
ast::ExprKind::Name {id, ctx: _} =>
Ok(ast::Expr {
location: expr.location,
custom: Some(self.resolve(id)?),
node: expr.node
}),
ast::ExprKind::List {elts, ctx: _} =>
Ok(ast::Expr {
location: expr.location,
custom: self.infer_list(elts)?,
node: expr.node
}),
ast::ExprKind::Tuple {elts, ctx: _} =>
Ok(ast::Expr {
location: expr.location,
custom: self.infer_tuple(elts)?,
node: expr.node
}),
ast::ExprKind::Attribute {value, attr, ctx: _} =>
Ok(ast::Expr {
location: expr.location,
custom: self.infer_arrtibute(value, attr)?,
node: expr.node
}),
ast::ExprKind::BoolOp {op: _, values} =>
Ok(ast::Expr {
location: expr.location,
custom: self.infer_bool_ops(values)?,
node: expr.node
}),
ast::ExprKind::BinOp {left, op, right} =>
Ok(ast::Expr {
location: expr.location,
custom: inference_core::resolve_call(
&self,
Some(left.custom.clone().ok_or_else(|| "no value".to_string())?),
magic_methods::binop_name(op),
&[right.custom.clone().ok_or_else(|| "no value".to_string())?])?,
node: expr.node
}),
ast::ExprKind::UnaryOp {op, operand} =>
Ok(ast::Expr {
location: expr.location,
custom: self.infer_unary_ops(op, operand)?,
node: expr.node
}),
ast::ExprKind::Compare {left, ops, comparators} =>
Ok(ast::Expr {
location: expr.location,
custom: self.infer_compare(left, ops, comparators)?,
node: expr.node
}),
ast::ExprKind::Call {func, args, keywords} =>
Ok(ast::Expr {
location: expr.location,
custom: self.infer_call(func, args, keywords)?,
node: expr.node
}),
ast::ExprKind::Subscript {value, slice, ctx: _} =>
Ok(ast::Expr {
location: expr.location,
custom: self.infer_subscript(value, slice)?,
node: expr.node
}),
ast::ExprKind::IfExp {test, body, orelse} =>
Ok(ast::Expr {
location: expr.location,
custom: self.infer_if_expr(test, body, orelse)?,
node: expr.node
}),
ast::ExprKind::ListComp {elt, generators} =>
Ok(ast::Expr {
location: expr.location,
custom: self.infer_list_comprehesion(elt, generators)?,
node: expr.node
}),
// not supported
_ => Err("not supported yet".into())
}
Ok(ast::Expr {
// compute type info and store in the custom field
custom: match &expr.node {
ast::ExprKind::Constant {value, kind: _} => self.infer_constant(value),
ast::ExprKind::Name {id, ctx: _} => Ok(Some(self.resolve(id)?)),
ast::ExprKind::List {elts, ctx: _} => self.infer_list(elts),
ast::ExprKind::Tuple {elts, ctx: _} => self.infer_tuple(elts),
ast::ExprKind::Attribute {value, attr, ctx: _} => self.infer_arrtibute(value, attr),
ast::ExprKind::BoolOp {op: _, values} => self.infer_bool_ops(values),
ast::ExprKind::BinOp {left, op, right} => self.infer_bin_ops(left, op, right),
ast::ExprKind::UnaryOp {op, operand} => self.infer_unary_ops(op, operand),
ast::ExprKind::Compare {left, ops, comparators} => self.infer_compare(left, ops, comparators),
ast::ExprKind::Call {func, args, keywords} => self.infer_call(func, args, keywords),
ast::ExprKind::Subscript {value, slice, ctx: _} => self.infer_subscript(value, slice),
ast::ExprKind::IfExp {test, body, orelse} => self.infer_if_expr(test, body, orelse),
ast::ExprKind::ListComp {elt, generators} => self.infer_list_comprehesion(elt, generators),
_ => Err("not supported yet".into())
}?,
location: expr.location,
node: expr.node
})
}
}
@ -152,7 +75,7 @@ impl<'a> InferenceContext<'a> {
ast::Constant::Tuple(vals) => {
let result = vals
.into_iter()
.iter()
.map(|x| self.infer_constant(x))
.collect::<Vec<_>>();
@ -251,8 +174,12 @@ impl<'a> InferenceContext<'a> {
}
}
fn _infer_bin_ops(&self, _left: &Box<ast::Expr<Option<Type>>>, _op: &ast::Operator, _right: &Box<ast::Expr<Option<Type>>>) -> Result<Option<Type>, String> {
Err("no need this function".into())
fn infer_bin_ops(&self, left: &Box<ast::Expr<Option<Type>>>, op: &ast::Operator, right: &Box<ast::Expr<Option<Type>>>) -> Result<Option<Type>, String> {
inference_core::resolve_call(
&self,
Some(left.custom.clone().ok_or_else(|| "no value".to_string())?),
magic_methods::binop_name(op),
&[right.custom.clone().ok_or_else(|| "no value".to_string())?])
}
fn infer_unary_ops(&self, op: &ast::Unaryop, operand: &Box<ast::Expr<Option<Type>>>) -> Result<Option<Type>, String> {
@ -417,15 +344,15 @@ impl<'a> InferenceContext<'a> {
.as_ref()
.clone() {
self.with_scope(|ctx| -> Result<ast::Expr<Option<Type>>, String> {
ctx.infer_simple_binding(
&generators_first_folded[0].target,
ls[0].clone())?;
ctx.infer_simple_binding(&generators_first_folded[0].target, ls[0].clone())?;
Ok(ast::Expr {
location,
custom,
node: ast::ExprKind::ListComp { // now fold things with new name
elt: Box::new(ctx.fold_expr(*elt)?),
generators: generators_first_folded
elt:
Box::new(ctx.fold_expr(*elt)?),
generators:
generators_first_folded
.into_iter()
.map(|x| -> Result<ast::Comprehension<Option<Type>>, String> {Ok(ast::Comprehension {
target: Box::new(ctx.fold_expr(*x.target)?),