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Finch 2.4.0: methods, maps, errors as values; str() of any value; macOS and ARM64 docs; Kate support

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- fn Struct.method(...) with self by reference, also on C structs
- map[K]V: insertion-ordered hash maps, literals, m[k] += 1, has/get/remove/keys/values
- -> T! / -> !, return error(...), or <value>, or { err }, try; fallible int/float/read_file/write_file/delete_file
- for i, x in list / for k, v in map
- print and str() share one text formatter
- LSP: method and map completion, method signatures; grammar and snippets for VS Code and Kate
- tests: 74 (methods, errors, maps + 11 failure cases); docs at all three levels, en and pl

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Nexoniarz 2026-10-09 01:11:12 +02:00
commit b872be3176
55 changed files with 3400 additions and 336 deletions
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25
src/lsp.cpp
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@ -412,17 +412,34 @@ json::Value Server::completion(const std::string &path, int line, int col) {
if (v.name == name && v.line <= line && line <= v.fnEnd + 1) type = v.type;
if (element && type.rfind("[]", 0) == 0) type = type.substr(2);
if (element && type == "str") type = "char";
if (element && type.rfind("map[", 0) == 0) { // m[key]. -> the value type
int depth = 0;
for (size_t k = 3; k < type.size(); k++) {
if (type[k] == '[') depth++;
else if (type[k] == ']' && --depth == 0) {
type = type.substr(k + 1);
break;
}
}
}
if (type.rfind("ptr[", 0) == 0) type = type.substr(4, type.size() - 5); // fields through a pointer
if (type == "str") {
for (const BuiltinDoc &d : kStrMethods) items.push_back(item(d.name, d.name[0] == 'l' || d.name[0] == 'p' ? KField : KMethod, d.signature, d.doc));
} else if (type.rfind("[]", 0) == 0) {
for (const BuiltinDoc &d : kArrayMethods) items.push_back(item(d.name, std::string(d.name) == "len" || std::string(d.name) == "ptr" ? KField : KMethod, d.signature, d.doc));
} else if (type.rfind("map[", 0) == 0) {
for (const BuiltinDoc &d : kMapMethods) items.push_back(item(d.name, std::string(d.name) == "len" ? KField : KMethod, d.signature, d.doc));
} else if (!type.empty()) {
std::string mod, sname = type;
if (size_t dot = type.find('.'); dot != std::string::npos) mod = type.substr(0, dot), sname = type.substr(dot + 1);
for (const StructIndex &s2 : a->index.structs)
if (s2.name == sname && (mod.empty() || s2.module == mod))
for (auto &[fname, ftype] : s2.fields) items.push_back(item(fname, KField, ftype + " " + fname));
std::set<std::string> seen;
for (const FnInfo &f : a->index.fns) // methods: indexed as Struct.name
if (f.name.size() > sname.size() + 1 && f.name.compare(0, sname.size() + 1, sname + ".") == 0 &&
seen.insert(f.name).second)
items.push_back(item(f.name.substr(sname.size() + 1), KMethod, f.signature));
if (type.rfind("ptr", 0) == 0 || items.empty()) items.push_back(item("value", KField, "the value the pointer points to"));
}
return json::Object{{"isIncomplete", false}, {"items", std::move(items)}};
@ -511,9 +528,12 @@ json::Value Server::signatureHelp(const std::string &path, int line, int col) {
std::string label, doc;
std::vector<std::string> params;
if (a) {
for (const FnInfo &f : a->index.fns)
if (f.name == name && (f.module == mod || (mod.empty() && f.module.empty()) || !a->modules.count(mod)))
for (const FnInfo &f : a->index.fns) {
bool method = f.name.size() > name.size() && f.name.compare(f.name.size() - name.size() - 1, name.size() + 1, "." + name) == 0;
if ((f.name == name && (f.module == mod || (mod.empty() && f.module.empty()) || !a->modules.count(mod))) ||
(method && !mod.empty() && !a->modules.count(mod))) // p.move( -> Point.move
label = f.signature, params = f.params;
}
if (label.empty())
for (const StructIndex &s : a->index.structs)
if (s.name == name) {
@ -544,6 +564,7 @@ json::Value Server::signatureHelp(const std::string &path, int line, int col) {
if (!mod.empty()) {
look(std::begin(kArrayMethods), std::end(kArrayMethods));
look(std::begin(kStrMethods), std::end(kStrMethods));
look(std::begin(kMapMethods), std::end(kMapMethods));
}
}
if (label.empty()) return nullptr;