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Fix the Display impl for PyRef #707

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Merged
OddCoincidence merged 3 commits into from
Mar 21, 2019
Merged

Fix the Display impl for PyRef #707

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54753b3
list, tuple: return NotImplemented for unsupported comparisons
OddCoincidence Mar 21, 2019
0b1b668
Fix Display impl for PyRef
OddCoincidence Mar 21, 2019
5980771
Merge remote-tracking branch 'origin/master' into joey/proper-pyref-d…
OddCoincidence Mar 21, 2019
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37 changes: 21 additions & 16 deletions vm/src/obj/objlist.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -245,57 +245,62 @@ impl PyListRef {
}
}

fn eq(self, other: PyObjectRef, vm: &mut VirtualMachine) -> PyResult<bool> {
fn eq(self, other: PyObjectRef, vm: &mut VirtualMachine) -> PyResult {
if self.as_object().is(&other) {
return Ok(true);
return Ok(vm.new_bool(true));
}

if objtype::isinstance(&other, &vm.ctx.list_type()) {
let zelf = self.elements.borrow();
let other = get_elements(&other);
Ok(seq_equal(vm, &zelf, &other)?)
let res = seq_equal(vm, &zelf, &other)?;
Ok(vm.new_bool(res))
} else {
Ok(false)
Ok(vm.ctx.not_implemented())
}
}

fn lt(self, other: PyObjectRef, vm: &mut VirtualMachine) -> PyResult<bool> {
fn lt(self, other: PyObjectRef, vm: &mut VirtualMachine) -> PyResult {
if objtype::isinstance(&other, &vm.ctx.list_type()) {
let zelf = self.elements.borrow();
let other = get_elements(&other);
Ok(seq_lt(vm, &zelf, &other)?)
let res = seq_lt(vm, &zelf, &other)?;
Ok(vm.new_bool(res))
} else {
Err(vm.new_type_error(format!("Cannot compare {} and {} using '<'", self, other)))
Ok(vm.ctx.not_implemented())
}
}

fn gt(self, other: PyObjectRef, vm: &mut VirtualMachine) -> PyResult<bool> {
fn gt(self, other: PyObjectRef, vm: &mut VirtualMachine) -> PyResult {
if objtype::isinstance(&other, &vm.ctx.list_type()) {
let zelf = self.elements.borrow();
let other = get_elements(&other);
Ok(seq_gt(vm, &zelf, &other)?)
let res = seq_gt(vm, &zelf, &other)?;
Ok(vm.new_bool(res))
} else {
Err(vm.new_type_error(format!("Cannot compare {} and {} using '>'", self, other)))
Ok(vm.ctx.not_implemented())
}
}

fn ge(self, other: PyObjectRef, vm: &mut VirtualMachine) -> PyResult<bool> {
fn ge(self, other: PyObjectRef, vm: &mut VirtualMachine) -> PyResult {
if objtype::isinstance(&other, &vm.ctx.list_type()) {
let zelf = self.elements.borrow();
let other = get_elements(&other);
Ok(seq_ge(vm, &zelf, &other)?)
let res = seq_ge(vm, &zelf, &other)?;
Ok(vm.new_bool(res))
} else {
Err(vm.new_type_error(format!("Cannot compare {} and {} using '>='", self, other)))
Ok(vm.ctx.not_implemented())
}
}

fn le(self, other: PyObjectRef, vm: &mut VirtualMachine) -> PyResult<bool> {
fn le(self, other: PyObjectRef, vm: &mut VirtualMachine) -> PyResult {
if objtype::isinstance(&other, &vm.ctx.list_type()) {
let zelf = self.elements.borrow();
let other = get_elements(&other);
Ok(seq_le(vm, &zelf, &other)?)
let res = seq_le(vm, &zelf, &other)?;
Ok(vm.new_bool(res))
} else {
Err(vm.new_type_error(format!("Cannot compare {} and {} using '<='", self, other)))
Ok(vm.ctx.not_implemented())
}
}
}
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9 changes: 4 additions & 5 deletions vm/src/obj/objstr.rs
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Original file line number Diff line number Diff line change
@@ -1,3 +1,4 @@
use std::fmt;
use std::hash::{Hash, Hasher};
use std::ops::Range;
use std::str::FromStr;
Expand Down Expand Up @@ -25,11 +26,9 @@ pub struct PyString {
pub value: String,
}

impl<T: ToString> From<T> for PyString {
fn from(t: T) -> PyString {
PyString {
value: t.to_string(),
}
impl fmt::Display for PyString {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::Display::fmt(&self.value, f)
}
}

Expand Down
37 changes: 21 additions & 16 deletions vm/src/obj/objtuple.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -46,43 +46,47 @@ impl PyValue for PyTuple {
pub type PyTupleRef = PyRef<PyTuple>;

impl PyTupleRef {
fn lt(self, other: PyObjectRef, vm: &mut VirtualMachine) -> PyResult<bool> {
fn lt(self, other: PyObjectRef, vm: &mut VirtualMachine) -> PyResult {
if objtype::isinstance(&other, &vm.ctx.tuple_type()) {
let zelf = self.elements.borrow();
let other = get_elements(&other);
Ok(seq_lt(vm, &zelf, &other)?)
let res = seq_lt(vm, &zelf, &other)?;
Ok(vm.new_bool(res))
} else {
Err(vm.new_type_error(format!("Cannot compare {} and {} using '<'", self, other)))
Ok(vm.ctx.not_implemented())
}
}

fn gt(self, other: PyObjectRef, vm: &mut VirtualMachine) -> PyResult<bool> {
fn gt(self, other: PyObjectRef, vm: &mut VirtualMachine) -> PyResult {
if objtype::isinstance(&other, &vm.ctx.tuple_type()) {
let zelf = self.elements.borrow();
let other = get_elements(&other);
Ok(seq_gt(vm, &zelf, &other)?)
let res = seq_gt(vm, &zelf, &other)?;
Ok(vm.new_bool(res))
} else {
Err(vm.new_type_error(format!("Cannot compare {} and {} using '>'", self, other)))
Ok(vm.ctx.not_implemented())
}
}

fn ge(self, other: PyObjectRef, vm: &mut VirtualMachine) -> PyResult<bool> {
fn ge(self, other: PyObjectRef, vm: &mut VirtualMachine) -> PyResult {
if objtype::isinstance(&other, &vm.ctx.tuple_type()) {
let zelf = self.elements.borrow();
let other = get_elements(&other);
Ok(seq_ge(vm, &zelf, &other)?)
let res = seq_ge(vm, &zelf, &other)?;
Ok(vm.new_bool(res))
} else {
Err(vm.new_type_error(format!("Cannot compare {} and {} using '>='", self, other)))
Ok(vm.ctx.not_implemented())
}
}

fn le(self, other: PyObjectRef, vm: &mut VirtualMachine) -> PyResult<bool> {
fn le(self, other: PyObjectRef, vm: &mut VirtualMachine) -> PyResult {
if objtype::isinstance(&other, &vm.ctx.tuple_type()) {
let zelf = self.elements.borrow();
let other = get_elements(&other);
Ok(seq_le(vm, &zelf, &other)?)
let res = seq_le(vm, &zelf, &other)?;
Ok(vm.new_bool(res))
} else {
Err(vm.new_type_error(format!("Cannot compare {} and {} using '<='", self, other)))
Ok(vm.ctx.not_implemented())
}
}

Expand All @@ -93,7 +97,7 @@ impl PyTupleRef {
let elements = e1.iter().chain(e2.iter()).cloned().collect();
Ok(vm.ctx.new_tuple(elements))
} else {
Err(vm.new_type_error(format!("Cannot add {} and {}", self, other)))
Ok(vm.ctx.not_implemented())
}
}

Expand All @@ -112,13 +116,14 @@ impl PyTupleRef {
Ok(count)
}

fn eq(self, other: PyObjectRef, vm: &mut VirtualMachine) -> PyResult<bool> {
fn eq(self, other: PyObjectRef, vm: &mut VirtualMachine) -> PyResult {
if objtype::isinstance(&other, &vm.ctx.tuple_type()) {
let zelf = &self.elements.borrow();
let other = get_elements(&other);
seq_equal(vm, &zelf, &other)
let res = seq_equal(vm, &zelf, &other)?;
Ok(vm.new_bool(res))
} else {
Ok(false)
Ok(vm.ctx.not_implemented())
}
}

Expand Down
7 changes: 7 additions & 0 deletions vm/src/obj/objtype.rs
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Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
use std::cell::RefCell;
use std::collections::HashMap;
use std::fmt;

use crate::function::PyFuncArgs;
use crate::pyobject::{
Expand All @@ -20,6 +21,12 @@ pub struct PyClass {
pub mro: Vec<PyClassRef>,
}

impl fmt::Display for PyClass {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::Display::fmt(&self.name, f)
}
}

pub type PyClassRef = PyRef<PyClass>;

impl PyValue for PyClass {
Expand Down
8 changes: 6 additions & 2 deletions vm/src/pyobject.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -768,9 +768,13 @@ impl<T> IntoPyObject for PyRef<T> {
}
}

impl<T> fmt::Display for PyRef<T> {
impl<T: fmt::Display> fmt::Display for PyRef<T>
where
T: PyValue + fmt::Display,
{
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
self.obj.fmt(f)
let value: &T = self.obj.payload().expect("unexpected payload for type");
fmt::Display::fmt(value, f)
}
}

Expand Down