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error_stack added, starting to working on writing error messages

This commit is contained in:
ychenfo 2021-07-26 13:33:48 +08:00
parent 132bc101b0
commit 123c5cf903
1 changed files with 6 additions and 2 deletions
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8
nac3core/src/typecheck/expression_inference.rs
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@ -6,7 +6,6 @@ use crate::typecheck::magic_methods;
use crate::typecheck::typedef::{Type, TypeEnum}; use crate::typecheck::typedef::{Type, TypeEnum};
use crate::typecheck::primitives; use crate::typecheck::primitives;
use rustpython_parser::ast; use rustpython_parser::ast;
use rustpython_parser::ast::fold::Fold;
pub struct TypeInferencer<'a> { pub struct TypeInferencer<'a> {
pub ctx: InferenceContext<'a>, pub ctx: InferenceContext<'a>,
@ -22,6 +21,7 @@ impl<'a> ast::fold::Fold<()> for TypeInferencer<'a> {
} }
fn fold_expr(&mut self, node: ast::Expr<()>) -> Result<ast::Expr<Self::TargetU>, Self::Error> { fn fold_expr(&mut self, node: ast::Expr<()>) -> Result<ast::Expr<Self::TargetU>, Self::Error> {
self.error_stack.push((node.node.name().into(), node.location)); self.error_stack.push((node.node.name().into(), node.location));
let expr = match &node.node { let expr = match &node.node {
@ -319,6 +319,9 @@ impl<'a> TypeInferencer<'a> {
// some pre-folds need special handling // some pre-folds need special handling
fn fold_listcomp(&mut self, expr: ast::Expr<()>) -> Result<ast::Expr<Option<Type>>, String> { fn fold_listcomp(&mut self, expr: ast::Expr<()>) -> Result<ast::Expr<Option<Type>>, String> {
self.error_stack.push(("folding list comprehension at ".into(), expr.location));
if let ast::Expr { if let ast::Expr {
location, location,
custom: _, custom: _,
@ -427,6 +430,7 @@ impl<'a> TypeInferencer<'a> {
fn fold_expr(&mut self, node: ast::Expr<()>) -> Result<ast::Expr<Option<Type>>, String> { fn fold_expr(&mut self, node: ast::Expr<()>) -> Result<ast::Expr<Option<Type>>, String> {
let result = <Self as ast::fold::Fold<()>>::fold_expr(self, node); let result = <Self as ast::fold::Fold<()>>::fold_expr(self, node);
if result.is_err() { if result.is_err() {
println!("{:?}", result);
println!("{:?}", self.error_stack.pop().unwrap()); println!("{:?}", self.error_stack.pop().unwrap());
} }
result result
@ -656,7 +660,6 @@ pub mod test {
println!("{:?}", folded.custom); println!("{:?}", folded.custom);
println!("{:?}", folded_2.custom); println!("{:?}", folded_2.custom);
let folded_13 = inf.fold_expr(ast13);
println!("{:?}", folded_3.custom); println!("{:?}", folded_3.custom);
println!("{:?}", folded_4.custom); println!("{:?}", folded_4.custom);
println!("{:?}", folded_5.custom); println!("{:?}", folded_5.custom);
@ -667,5 +670,6 @@ pub mod test {
println!("{:?}", folded_10.custom); println!("{:?}", folded_10.custom);
println!("{:?}", folded_11.custom); println!("{:?}", folded_11.custom);
println!("{:?}", folded_12.custom); println!("{:?}", folded_12.custom);
let folded_13 = inf.fold_expr(ast13);
} }
} }