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Parse struct type

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This commit is contained in:
Sofia 2026-04-15 19:02:01 +03:00
parent f283149090
commit 94d1c15897
3 changed files with 68 additions and 20 deletions
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2
src/codegen.cpp
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@ -283,8 +283,6 @@ namespace AST {
}
}
else if (ptr_ty->m_inner->m_kind == types::TypeKind::Array) {
std::cout << ptr_ty->m_inner->formatted() << std::endl;
// Must be an array otherwise
auto arr_ty = dynamic_cast<types::ArrayType*>(ptr_ty->m_inner.get());
auto gep_value = builder.builder->CreateGEP(arr_ty->m_inner->codegen(builder, scope.structs), value.value, idx_list, "GEP");

2
src/main.cpp
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@ -165,7 +165,7 @@ std::optional<CompileOutput> compile(std::string_view in_filename) {
builder.mod->print(llvm_ir_dest, nullptr);
llvm_ir_dest.flush();
std::cout << llvm_ir_string << std::endl;
// std::cout << llvm_ir_string << std::endl;
// Print output to obj-file
std::error_code EC;

84
src/parsing.cpp
View File

@ -7,30 +7,80 @@ namespace parsing {
namespace {
Result<std::unique_ptr<AST::Expression>, std::string> parse_expression(token::TokenStream& stream, Scope& scope);
Result<std::shared_ptr<types::Type>, std::string> parse_type(token::TokenStream& stream, Scope&) {
Result<std::shared_ptr<types::Type>, std::string> parse_type(token::TokenStream& stream, Scope& scope) {
token::TokenStream inner{ stream };
try {
auto token = inner.expect(token::Type::Ident);
// TODO eventually make this be potentially more than one word
std::string type_name = token.content;
std::shared_ptr<types::Type> returned{};
if (type_name == "int") {
auto ty = new types::FundamentalType{ types::FundamentalTypeKind::Int };
returned = std::shared_ptr<types::Type>{ ty };
}
else if (type_name == "char") {
auto ty = new types::FundamentalType{ types::FundamentalTypeKind::Char };
returned = std::shared_ptr<types::Type>{ ty };
}
else if (type_name == "void") {
auto ty = new types::FundamentalType{ types::FundamentalTypeKind::Void };
returned = std::shared_ptr<types::Type>{ ty };
if (token.content == "struct") {
std::optional<std::string> struct_name{};
if (inner.peek().type == token::Type::Ident) {
struct_name = inner.expect(token::Type::Ident).content;
}
std::optional<std::vector<types::StructField>> maybe_fields{};
if (inner.peek().content == "{") {
std::vector<types::StructField> fields{};
inner.expect(token::Type::Symbol, "{");
int counter = 0;
while (inner.peek().content != "}") {
if (counter++ > 0)
inner.expect(token::Type::Symbol, ";");
auto ty = parse_type(inner, scope);
if (!ty.ok())
break;
auto field_name = inner.expect(token::Type::Ident);
fields.push_back(types::StructField{ field_name.content, ty.unwrap() });
}
inner.expect(token::Type::Symbol, "}");
maybe_fields = fields;
}
if (!struct_name && !maybe_fields) {
throw std::runtime_error("Struct must have a name or fields!");
}
if (struct_name && !maybe_fields && scope.structs.find(*struct_name) != scope.structs.end()) {
auto original_ty = scope.structs[*struct_name];
auto original_struct_ty = dynamic_cast<types::StructType*>(original_ty.get());
auto ty = new types::StructType{ struct_name, original_struct_ty->m_fields, true };
returned = std::shared_ptr<types::Type>{ ty };
}
else {
auto ty = new types::StructType{ struct_name, maybe_fields, false };
returned = std::shared_ptr<types::Type>{ ty };
}
}
else {
throw std::runtime_error("Expected type name, got " + type_name);
// TODO eventually make this be potentially more than one word
std::string type_name = token.content;
if (type_name == "int") {
auto ty = new types::FundamentalType{ types::FundamentalTypeKind::Int };
returned = std::shared_ptr<types::Type>{ ty };
}
else if (type_name == "char") {
auto ty = new types::FundamentalType{ types::FundamentalTypeKind::Char };
returned = std::shared_ptr<types::Type>{ ty };
}
else if (type_name == "void") {
auto ty = new types::FundamentalType{ types::FundamentalTypeKind::Void };
returned = std::shared_ptr<types::Type>{ ty };
}
else {
throw std::runtime_error("Expected type name, got " + type_name);
}
}
while (inner.peek().type == token::Type::Symbol && inner.peek().content == "*") {
@ -432,7 +482,6 @@ namespace parsing {
if (inner.peek().type == token::Type::Ident) {
param_name = inner.expect(token::Type::Ident).content;
std::cout << inner.peek().formatted() << std::endl;
auto postfix = parse_array_postfix(inner, true, scope);
while (postfix.ok()) {
auto array_postfix = postfix.unwrap();
@ -498,6 +547,7 @@ namespace parsing {
auto before_meta = inner.metadata();
try {
auto ty = parse_type(inner, scope).unwrap();
inner.expect(token::Type::Symbol, ";");
stream.m_position = inner.m_position;
auto tl_typedef = new AST::TopLevelTypedef{