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[FunC] Forbid impure operations inside pure functions

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In stdlib, all existing pure functions are asm-implemented.
But since we introduced a `pure` keyword applicable to user-defined functions,
we need to check that they won't have any side effects
(exceptions, globals modification, etc.)
This commit is contained in:
Aleksandr Kirsanov 2024-05-03 20:58:21 +03:00
parent 85c60d1263
commit ef5719d7e6
No known key found for this signature in database
GPG key ID: B758BBAA01FFB3D3
9 changed files with 181 additions and 51 deletions
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17
crypto/func/abscode.cpp
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@ -223,15 +223,6 @@ void VarDescrList::show(std::ostream& os) const {
os << " ]\n";
}
void Op::flags_set_clear(int set, int clear) {
flags = (flags | set) & ~clear;
for (auto& op : block0) {
op.flags_set_clear(set, clear);
}
for (auto& op : block1) {
op.flags_set_clear(set, clear);
}
}
void Op::split_vars(const std::vector<TmpVar>& vars) {
split_var_list(left, vars);
split_var_list(right, vars);
@ -296,7 +287,7 @@ void Op::show(std::ostream& os, const std::vector<TmpVar>& vars, std::string pfx
if (noreturn()) {
dis += "<noret> ";
}
if (!is_pure()) {
if (impure()) {
dis += "<impure> ";
}
switch (cl) {
@ -469,12 +460,6 @@ void Op::show_block(std::ostream& os, const Op* block, const std::vector<TmpVar>
os << pfx << "}";
}
void CodeBlob::flags_set_clear(int set, int clear) {
for (auto& op : ops) {
op.flags_set_clear(set, clear);
}
}
std::ostream& operator<<(std::ostream& os, const CodeBlob& code) {
code.print(os);
return os;