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/*
* MRustC - Rust Compiler
* - By John Hodge (Mutabah/thePowersGang)
*
* synexts/lang_item.cpp
* - Binds language items to #[lang_item] tagged items
*/
#include <synext.hpp>
#include "../common.hpp"
#include "../ast/ast.hpp"
#include "../ast/crate.hpp"
void handle_lang_item(const Span& sp, AST::Crate& crate, const AST::Path& path, const ::std::string& name, AST::eItemType type)
{
if(name == "phantom_fn") {
// - Just save path
}
else if( name == "send" ) {
// Don't care, Send is fully library in mrustc
// - Needed for `static`
}
else if( name == "sync" ) {
// Don't care, Sync is fully library in mrustc
// - Needed for `static`
}
else if( name == "sized" ) {
DEBUG("Bind 'sized' to " << path);
}
else if( name == "copy" ) {
DEBUG("Bind 'copy' to " << path);
}
else if( TARGETVER_1_29 && name == "clone" ) {} // - Trait
// ops traits
else if( name == "drop" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "add" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "sub" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "mul" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "div" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "rem" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "neg" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "not" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "bitand" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "bitor" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "bitxor" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "shl" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "shr" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "add_assign" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "sub_assign" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "div_assign" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "rem_assign" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "mul_assign" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "bitand_assign" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "bitor_assign" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "bitxor_assign" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "shl_assign" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "shr_assign" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "index" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "deref" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "index_mut" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "deref_mut" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "fn" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "fn_mut" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "fn_once" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "eq" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "ord" ) { DEBUG("Bind '"<<name<<"' to " << path); } // In 1.29 this is Ord, before it was PartialOrd
else if( TARGETVER_1_29 && name == "partial_ord" ) { DEBUG("Bind '"<<name<<"' to " << path); } // New name for v1.29
else if( name == "unsize" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "coerce_unsized" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "freeze" ) { DEBUG("Bind '"<<name<<"' to " << path); }
else if( name == "iterator" ) { /* mrustc just desugars? */ }
else if( name == "debug_trait" ) { /* TODO: Poke derive() with this */ }
else if( TARGETVER_1_29 && name == "termination" ) { } // 1.29 - trait used for non-() main
// Structs
else if( name == "non_zero" ) { }
else if( name == "phantom_data" ) { }
else if( name == "range_full" ) { }
else if( name == "range" ) { }
else if( name == "range_from" ) { }
else if( name == "range_to" ) { }
else if( name == "unsafe_cell" ) { }
else if( TARGETVER_1_29 && name == "alloc_layout") { }
else if( TARGETVER_1_29 && name == "panic_info" ) {} // Struct
else if( TARGETVER_1_29 && name == "manually_drop" ) {} // Struct
// Generators
else if( TARGETVER_1_29 && name == "generator" ) {} // - Trait
else if( TARGETVER_1_29 && name == "generator_state" ) {} // - State enum
// Statics
else if( name == "msvc_try_filter" ) { }
// Extern functions
else if( name == "panic_impl" ) {
}
else if( name == "oom" ) {
}
// Functions
else if( name == "panic" ) { }
else if( name == "panic_bounds_check" ) { }
else if( name == "panic_fmt" ) { }
else if( name == "str_eq" ) { }
else if( name == "drop_in_place" ) { }
else if( name == "align_offset" ) { }
// - builtin `box` support
else if( name == "exchange_malloc" ) { }
else if( name == "exchange_free" ) { }
else if( name == "box_free" ) { }
else if( name == "owned_box" ) { }
// - start
else if( name == "start" ) { }
else if( name == "eh_personality" ) { }
// libcompiler_builtins
// - i128/u128 helpers (not used by mrustc)
else if( name == "i128_add" ) { }
else if( name == "i128_addo" ) { }
else if( name == "u128_add" ) { }
else if( name == "u128_addo" ) { }
else if( name == "i128_sub" ) { }
else if( name == "i128_subo" ) { }
else if( name == "u128_sub" ) { }
else if( name == "u128_subo" ) { }
else if( name == "i128_mul" ) { }
else if( name == "i128_mulo" ) { }
else if( name == "u128_mul" ) { }
else if( name == "u128_mulo" ) { }
else if( name == "i128_div" ) { }
else if( name == "i128_rem" ) { }
else if( name == "u128_div" ) { }
else if( name == "u128_rem" ) { }
else if( name == "i128_shl" ) { }
else if( name == "i128_shlo" ) { }
else if( name == "u128_shl" ) { }
else if( name == "u128_shlo" ) { }
else if( name == "i128_shr" ) { }
else if( name == "i128_shro" ) { }
else if( name == "u128_shr" ) { }
else if( name == "u128_shro" ) { }
else {
ERROR(sp, E0000, "Unknown language item '" << name << "'");
}
if( type == AST::ITEM_EXTERN_FN )
{
// TODO: This should force a specific link name instead
return ;
}
auto rv = crate.m_lang_items.insert( ::std::make_pair( name, ::AST::Path(path) ) );
if( !rv.second ) {
const auto& other_path = rv.first->second;
if( path != other_path ) {
// HACK: Anon modules get visited twice, so can lead to duplicate annotations
ERROR(sp, E0000, "Duplicate definition of language item '" << name << "' - " << other_path << " and " << path);
}
}
}
class Decorator_LangItem:
public ExpandDecorator
{
public:
AttrStage stage() const override { return AttrStage::Post; }
void handle(const Span& sp, const AST::Attribute& attr, AST::Crate& crate, const AST::Path& path, AST::Module& mod, slice<const AST::Attribute> attrs, AST::Item& i) const override
{
TU_MATCH_DEF(::AST::Item, (i), (e),
(
TODO(sp, "Unknown item type " << i.tag_str() << " with #["<<attr<<"] attached at " << path);
),
(None,
// NOTE: Can happen when #[cfg] removed this
),
(Function,
if( e.code().is_valid() ) {
handle_lang_item(sp, crate, path, attr.string(), AST::ITEM_FN);
}
else {
handle_lang_item(sp, crate, path, attr.string(), AST::ITEM_EXTERN_FN);
}
),
(Static,
handle_lang_item(sp, crate, path, attr.string(), AST::ITEM_STATIC);
),
(Struct,
handle_lang_item(sp, crate, path, attr.string(), AST::ITEM_STRUCT);
),
(Enum,
handle_lang_item(sp, crate, path, attr.string(), AST::ITEM_ENUM);
),
(Trait,
handle_lang_item(sp, crate, path, attr.string(), AST::ITEM_TRAIT);
)
)
}
void handle(const Span& sp, const AST::Attribute& mi, AST::Crate& crate, const AST::Module& mod, AST::ImplDef& impl) const override {
const ::std::string& name = mi.string();
if( name == "i8" ) {}
else if( name == "u8" ) {}
else if( name == "i16" ) {}
else if( name == "u16" ) {}
else if( name == "i32" ) {}
else if( name == "u32" ) {}
else if( name == "i64" ) {}
else if( name == "u64" ) {}
else if( name == "i128" ) {}
else if( name == "u128" ) {}
else if( name == "isize" ) {}
else if( name == "usize" ) {}
else if( name == "const_ptr" ) {}
else if( name == "mut_ptr" ) {}
// rustc_unicode
else if( name == "char" ) {}
// collections
else if( name == "str" ) {}
else if( name == "slice" ) {}
else if( TARGETVER_1_29 && name == "slice_u8" ) {} // libcore now, `impl [u8]`
else if( TARGETVER_1_29 && name == "slice_alloc" ) {} // liballoc's impls on [T]
else if( TARGETVER_1_29 && name == "slice_u8_alloc" ) {} // liballoc's impls on [u8]
else if( TARGETVER_1_29 && name == "str_alloc" ) {} // liballoc's impls on str
// std - interestingly
else if( name == "f32" ) {}
else if( name == "f64" ) {}
else if( TARGETVER_1_29 && name == "f32_runtime" ) {}
else if( TARGETVER_1_29 && name == "f64_runtime" ) {}
else {
ERROR(sp, E0000, "Unknown lang item '" << name << "' on impl");
}
// TODO: Somehow annotate these impls to allow them to provide inherents?
// - mrustc is lazy and inefficient, so these don't matter :)
}
};
class Decorator_Main:
public ExpandDecorator
{
public:
AttrStage stage() const override { return AttrStage::Post; }
void handle(const Span& sp, const AST::Attribute& attr, AST::Crate& crate, const AST::Path& path, AST::Module& mod, slice<const AST::Attribute> attrs, AST::Item& i) const override
{
if( i.is_None() ) {
// Ignore.
}
else TU_IFLET(::AST::Item, i, Function, e,
auto rv = crate.m_lang_items.insert(::std::make_pair( ::std::string("mrustc-main"), ::AST::Path(path) ));
if( !rv.second )
{
const auto& other_path = rv.first->second;
ERROR(sp, E0000, "Duplicate definition of #[main] - " << other_path << " and " << path);
}
)
else {
ERROR(sp, E0000, "#[main] on non-function " << path);
}
}
};
class Decorator_Start:
public ExpandDecorator
{
public:
AttrStage stage() const override { return AttrStage::Post; }
void handle(const Span& sp, const AST::Attribute& attr, AST::Crate& crate, const AST::Path& path, AST::Module& mod, slice<const AST::Attribute> attrs, AST::Item& i) const override
{
TU_IFLET(::AST::Item, i, Function, e,
auto rv = crate.m_lang_items.insert(::std::make_pair( ::std::string("mrustc-start"), ::AST::Path(path) ));
if( !rv.second )
{
const auto& other_path = rv.first->second;
ERROR(sp, E0000, "Duplicate definition of #[start] - " << other_path << " and " << path);
}
)
else {
ERROR(sp, E0000, "#[start] on non-function " << path);
}
}
};
class Decorator_PanicImplementation:
public ExpandDecorator
{
public:
AttrStage stage() const override { return AttrStage::Post; }
void handle(const Span& sp, const AST::Attribute& attr, AST::Crate& crate, const AST::Path& path, AST::Module& mod, slice<const AST::Attribute> attrs, AST::Item& i) const override
{
TU_IFLET(::AST::Item, i, Function, e,
auto rv = crate.m_lang_items.insert(::std::make_pair( ::std::string("mrustc-panic_implementation"), ::AST::Path(path) ));
if( !rv.second )
{
const auto& other_path = rv.first->second;
ERROR(sp, E0000, "Duplicate definition of #[panic_implementation] - " << other_path << " and " << path);
}
)
else {
ERROR(sp, E0000, "#[panic_implementation] on non-function " << path);
}
}
};
STATIC_DECORATOR("lang", Decorator_LangItem)
STATIC_DECORATOR("main", Decorator_Main);
STATIC_DECORATOR("start", Decorator_Start);
STATIC_DECORATOR("panic_implementation", Decorator_PanicImplementation);
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