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fix mutable match error

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This commit is contained in:
Protryon 2020-12-16 13:20:49 -08:00
parent 9657084001
commit 833eeb7fc5
1 changed files with 13 additions and 5 deletions
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18
compiler/src/statement/assign/assignee.rs
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@ -118,6 +118,14 @@ impl<F: Field + PrimeField, G: GroupType<F>> ConstrainedProgram<F, G> {
}
}
// discards unnecessary mutable wrappers
fn unwrap_mutable(input: &mut ConstrainedValue<F, G>) -> &mut ConstrainedValue<F, G> {
match input {
ConstrainedValue::Mutable(x) => &mut **x,
x => x,
}
}
fn resolve_assignee_access<'a>(
access: ResolvedAssigneeAccess,
span: &Span,
@ -128,7 +136,7 @@ impl<F: Field + PrimeField, G: GroupType<F>> ConstrainedProgram<F, G> {
if value.len() != 1 {
return Err(StatementError::array_assign_interior_index(span.clone()));
}
match value.remove(0) {
match Self::unwrap_mutable(value.remove(0)) {
ConstrainedValue::Array(old) => {
if index > old.len() {
Err(StatementError::array_assign_index_bounds(
@ -148,7 +156,7 @@ impl<F: Field + PrimeField, G: GroupType<F>> ConstrainedProgram<F, G> {
if value.len() == 1 {
// not a range of a range
match value.remove(0) {
match Self::unwrap_mutable(value.remove(0)) {
ConstrainedValue::Array(old) => {
let stop_index = stop_index.unwrap_or(old.len());
Self::check_range_index(start_index, stop_index, old.len(), &span)?;
@ -162,7 +170,7 @@ impl<F: Field + PrimeField, G: GroupType<F>> ConstrainedProgram<F, G> {
let stop_index = stop_index.unwrap_or(value.len());
Self::check_range_index(start_index, stop_index, value.len(), &span)?;
Ok(value.drain(start_index..stop_index).collect())
Ok(value.drain(start_index..stop_index).map(Self::unwrap_mutable).collect())
}
}
ResolvedAssigneeAccess::Tuple(index, span) => {
@ -171,7 +179,7 @@ impl<F: Field + PrimeField, G: GroupType<F>> ConstrainedProgram<F, G> {
if value.len() != 1 {
return Err(StatementError::array_assign_interior_index(span));
}
match value.remove(0) {
match Self::unwrap_mutable(value.remove(0)) {
ConstrainedValue::Tuple(old) => {
if index > old.len() {
Err(StatementError::tuple_assign_index_bounds(index, old.len(), span))
@ -186,7 +194,7 @@ impl<F: Field + PrimeField, G: GroupType<F>> ConstrainedProgram<F, G> {
if value.len() != 1 {
return Err(StatementError::array_assign_interior_index(span.clone()));
}
match value.remove(0) {
match Self::unwrap_mutable(value.remove(0)) {
ConstrainedValue::CircuitExpression(_variable, members) => {
// Modify the circuit variable in place
let matched_variable = members.iter_mut().find(|member| member.0 == name);