KPGPMC/furlang
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feat(furc): add access specifiers to functions

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Introduce public and private access specifiers to functions.

Closes: #26
This commit is contained in:
Aleksander Krajewski
2026-06-28 13:08:15 +02:00
parent 8702298cd2
commit 0bcbe1d7d1
4 changed files with 84 additions and 23 deletions
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furc/src/front/parser.cpp
+38 -11
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@@ -54,21 +54,40 @@ ast::type_r parser::parse_type() {
ast::declaration_node_r parser::parse_declaration() {
const auto& first = peek_token();
if (first.has_error()) return ast::declaration_node_r(ast::error{ first.error().location });
switch (first->type) {
case token_t::Keyword: {
token firstToken = *first;
ast::declaration_access_t accessOverride = ast::declaration_access_t::Implicit;
switch ((*first)->keyword) {
default: break;
case keyword_token::Public:
case keyword_token::Private: {
if ((*first)->keyword == keyword_token::Public) accessOverride = ast::declaration_access_t::Public;
if ((*first)->keyword == keyword_token::Private) accessOverride = ast::declaration_access_t::Private;
auto kw = eat_token(token_t::Keyword);
if (kw.has_error()) return ast::declaration_node_r(ast::error{ kw.error().location });
firstToken = *kw;
} break;
}
ast::function_declaration_node_t funcDeclType{};
auto first = next_token();
switch ((*first)->keyword) {
auto kw = next_token();
if (kw.has_error()) return ast::declaration_node_r(ast::error{ kw.error().location });
firstToken = *kw;
switch (firstToken->keyword) {
case keyword_token::Import:
case keyword_token::Native: {
funcDeclType = ((*first)->keyword == keyword_token::Import) ? ast::function_declaration_node_t::Import
: ast::function_declaration_node_t::Native;
funcDeclType = (firstToken->keyword == keyword_token::Import) ? ast::function_declaration_node_t::Import
: ast::function_declaration_node_t::Native;
first = eat_token(token_t::Keyword);
if (first.has_error()) return ast::declaration_node_r(ast::error{ first.error().location });
if (first->value.keyword != keyword_token::Func)
return ast::declaration_node_r(ast::error{ first->location });
auto kw = eat_token(token_t::Keyword);
if (kw.has_error()) return ast::declaration_node_r(ast::error{ kw.error().location });
firstToken = *kw;
if (firstToken.value.keyword != keyword_token::Func)
return ast::declaration_node_r(ast::error{ firstToken.location });
}
case keyword_token::Func: {
auto name = eat_token(token_t::Identifier);
@@ -106,6 +125,12 @@ ast::declaration_node_r parser::parse_declaration() {
returnType = *type;
}
auto access = (funcDeclType == ast::function_declaration_node_t::Import)
? ast::declaration_access_t::Private
: accessOverride;
if (access == ast::declaration_access_t::Implicit) access = ast::declaration_access_t::Public;
if (!ast::same_access(accessOverride, access)) return ast::declaration_node_r(ast::error{ tok->location });
const auto& peek = peek_token();
if (peek.has_error()) return ast::declaration_node_r(ast::error{ peek.error().location });
switch (peek->type) {
@@ -114,7 +139,8 @@ ast::declaration_node_r parser::parse_declaration() {
if (body.has_error()) return ast::declaration_node_r(ast::error{ body.error().location });
if (funcDeclType != ast::function_declaration_node_t::Normal)
return ast::declaration_node_r(ast::error{ body->begin });
return m_arena->allocate_shared<ast::function_definition_node>(first->location,
return m_arena->allocate_shared<ast::function_definition_node>(firstToken.location,
access,
name->value.string,
std::move(returnType),
std::move(params),
@@ -122,7 +148,8 @@ ast::declaration_node_r parser::parse_declaration() {
}
case token_t::Semicolon: {
m_peekBuffer.clear();
return m_arena->allocate_shared<ast::function_declaration_node>(first->location,
return m_arena->allocate_shared<ast::function_declaration_node>(firstToken.location,
access,
name->value.string,
std::move(returnType),
std::move(params),
@@ -131,7 +158,7 @@ ast::declaration_node_r parser::parse_declaration() {
default: return ast::declaration_node_r(ast::error{ tok->location });
}
}
default: return ast::declaration_node_r(ast::error{ first->location });
default: return ast::declaration_node_r(ast::error{ firstToken.location });
}
}
case token_t::None: