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compiler: Env register_string

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ProgramSnail 2025-01-22 23:26:10 +03:00
parent 28f4dc191b
commit 44d50c4c8e
1 changed files with 44 additions and 44 deletions
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88
byterun/src/compiler.cpp
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@ -1033,50 +1033,50 @@ public:
/* registers a string constant */
Opnd register_string(const std::string &x) {
// TODO
// let escape x =
// let n = String.length x in
// let buf = Buffer.create (n * 2) in
// let rec iterate i =
// if i < n then
// match x.[i] with
// | '"' ->
// Buffer.add_char buf '\\';
// Buffer.add_char buf '"';
// iterate (i + 1)
// | '\\' -> (
// if i + 1 >= n then (
// Buffer.add_char buf '\\';
// Buffer.add_char buf '\\')
// else
// match x.[i + 1] with
// | 'n' ->
// Buffer.add_char buf '\\';
// Buffer.add_char buf 'n';
// iterate (i + 2)
// | 't' ->
// Buffer.add_char buf '\\';
// Buffer.add_char buf 't';
// iterate (i + 2)
// | _ ->
// Buffer.add_char buf '\\';
// Buffer.add_char buf '\\';
// iterate (i + 1))
// | c ->
// Buffer.add_char buf c;
// iterate (i + 1)
// in
// iterate 0;
// Buffer.contents buf
// in
// let x = escape x in
// let name = M.find_opt x stringm in
// match name with
// | Some name -> (M (D, I, A, name), self)
// | None ->
// let name = Printf.sprintf "string_%d" scount in
// let m = M.add x name stringm in
// (M (D, I, A, name), {<scount = scount + 1; stringm = m>})
const auto escape = [](const std::string &y) {
const size_t n = y.size();
std::string buffer;
buffer.reserve(n * 2);
for (size_t i = 0; i < n; ++i) {
switch (y[i]) {
case '"':
buffer.push_back('\\');
buffer.push_back('"');
break;
case '\\':
buffer.push_back('\\');
if (i + 1 >= n) {
buffer.push_back('\\');
} else {
switch (y[i + 1]) {
case 'n':
case 't':
buffer.push_back(y[i + 1]);
++i;
break;
default:
buffer.push_back('\\');
break;
}
}
break;
default:
buffer.push_back(y[i]);
break;
}
}
return buffer;
};
const auto y = escape(x);
const auto it = stringm.find(y);
if (it == stringm.end()) {
const auto name = std::format("string_{}", scount);
stringm.insert({y, name});
++scount;
}
return M{DataKind::D, Externality::I, Addressed::A, it->second};
}
/* gets all global variables */