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Add lots of static Symbols.

Browse Source 
These will be used in the subsequent commits. Many of them are
attributes.

The commit also adds the ability to handle symbols that aren't
identifiers (e.g. "proc-macro").
This commit is contained in:
Nicholas Nethercote 2019-05-07 09:55:12 +10:00
parent 1764b29725
commit a8245f5a38
2 changed files with 415 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
src/librustc_macros/src/symbols.rs
View File

@ -11,7 +11,7 @@ use quote::quote;
#[allow(non_camel_case_types)]
mod kw {
syn::custom_keyword!(Keywords);
syn::custom_keyword!(Other);
syn::custom_keyword!(Symbols);
}
struct Keyword {
@ -33,14 +33,24 @@ impl Parse for Keyword {
}
}
struct Symbol(Ident);
struct Symbol {
name: Ident,
value: Option<LitStr>,
}
impl Parse for Symbol {
fn parse(input: ParseStream<'_>) -> Result<Self> {
let ident: Ident = input.parse()?;
let name = input.parse()?;
let value = match input.parse::<Token![:]>() {
Ok(_) => Some(input.parse()?),
Err(_) => None,
};
input.parse::<Token![,]>()?;
Ok(Symbol(ident))
Ok(Symbol {
name,
value,
})
}
}
@ -69,7 +79,7 @@ impl Parse for Input {
braced!(content in input);
let keywords = content.parse()?;
input.parse::<kw::Other>()?;
input.parse::<kw::Symbols>()?;
let content;
braced!(content in input);
let symbols = content.parse()?;
@ -116,19 +126,22 @@ pub fn symbols(input: TokenStream) -> TokenStream {
}
for symbol in &input.symbols.0 {
let value = &symbol.0;
let value_str = value.to_string();
check_dup(&value_str);
let name = &symbol.name;
let value = match &symbol.value {
Some(value) => value.value(),
None => name.to_string(),
};
check_dup(&value);
prefill_stream.extend(quote! {
#value_str,
#value,
});
symbols_stream.extend(quote! {
pub const #value: Symbol = Symbol::new(#counter);
pub const #name: Symbol = Symbol::new(#counter);
});
counter += 1;
}
TokenStream::from(quote! {
let tt = TokenStream::from(quote! {
macro_rules! keywords {
() => {
#keyword_stream
@ -159,5 +172,11 @@ pub fn symbols(input: TokenStream) -> TokenStream {
])
}
}
})
});
// To see the generated code generated, uncomment this line, recompile, and
// run the resulting output through `rustfmt`.
//eprintln!("{}", tt);
tt
}

388
src/libsyntax_pos/symbol.rs
View File

@ -99,88 +99,375 @@ symbols! {
Union: "union",
}
// Other symbols that can be referred to with syntax_pos::symbols::*
Other {
// Symbols that can be referred to with syntax_pos::symbols::*. The symbol
// is the stringified identifier unless otherwise specified (e.g.
// `proc_dash_macro` represents "proc-macro").
Symbols {
aarch64_target_feature,
abi,
abi_amdgpu_kernel,
abi_msp430_interrupt,
abi_ptx,
abi_sysv64,
abi_thiscall,
abi_unadjusted,
abi_vectorcall,
abi_x86_interrupt,
aborts,
advanced_slice_patterns,
adx_target_feature,
alias,
align,
alignstack,
all,
allocator,
allocator_internals,
alloc_error_handler,
allow,
allowed,
allow_fail,
allow_internal_unsafe,
allow_internal_unstable,
allow_internal_unstable_backcompat_hack,
always,
any,
arbitrary_self_types,
arm_target_feature,
asm,
associated_consts,
associated_type_defaults,
associated_types,
async_await,
attr,
attributes,
attr_literals,
augmented_assignments,
automatically_derived,
avx512_target_feature,
await_macro,
bin,
bind_by_move_pattern_guards,
block,
borrowck_graphviz_postflow,
borrowck_graphviz_preflow,
box_patterns,
box_syntax,
braced_empty_structs,
C,
cdylib,
cfg,
cfg_attr,
cfg_attr_multi,
cfg_target_feature,
cfg_target_has_atomic,
cfg_target_thread_local,
cfg_target_vendor,
clone,
clone_closures,
clone_from,
closure_to_fn_coercion,
cmpxchg16b_target_feature,
cold,
compile_error,
compiler_builtins,
concat_idents,
conservative_impl_trait,
console,
const_compare_raw_pointers,
const_fn,
const_fn_union,
const_generics,
const_indexing,
const_let,
const_panic,
const_raw_ptr_deref,
const_raw_ptr_to_usize_cast,
const_transmute,
contents,
convert,
copy_closures,
core,
core_intrinsics,
crate_id,
crate_in_paths,
crate_name,
crate_type,
crate_visibility_modifier,
custom_attribute,
custom_derive,
custom_inner_attributes,
custom_test_frameworks,
c_variadic,
decl_macro,
default_lib_allocator,
default_type_parameter_fallback,
default_type_params,
deny,
deprecated,
derive,
doc,
doc_alias,
doc_cfg,
doc_keyword,
doc_masked,
doc_spotlight,
document_private_items,
dotdoteq_in_patterns,
dotdot_in_tuple_patterns,
dropck_eyepatch,
dropck_parametricity,
drop_types_in_const,
dylib,
dyn_trait,
eh_personality,
eh_unwind_resume,
enable,
Err,
except,
exclusive_range_pattern,
exhaustive_integer_patterns,
exhaustive_patterns,
existential_type,
expected,
export_name,
extern_absolute_paths,
external_doc,
extern_crate_item_prelude,
extern_crate_self,
extern_in_paths,
extern_prelude,
extern_types,
f16c_target_feature,
feature,
ffi_returns_twice,
field_init_shorthand,
file,
fn_must_use,
forbid,
format_args_nl,
from,
From,
from_error,
from_generator,
from_ok,
fundamental,
future,
Future,
generators,
generic_associated_types,
generic_param_attrs,
global_allocator,
global_asm,
globs,
hexagon_target_feature,
hidden,
homogeneous_aggregate,
html_favicon_url,
html_logo_url,
html_no_source,
html_playground_url,
html_root_url,
i128,
i128_type,
i16,
i32,
i64,
i8,
ident,
if_let,
if_while_or_patterns,
ignore,
impl_header_lifetime_elision,
impl_trait_in_bindings,
import_shadowing,
in_band_lifetimes,
include,
inclusive_range_syntax,
infer_outlives_requirements,
infer_static_outlives_requirements,
inline,
intel,
into_iter,
IntoIterator,
into_result,
intrinsics,
irrefutable_let_patterns,
isize,
issue,
issue_5723_bootstrap,
issue_tracker_base_url,
item_like_imports,
iter,
Iterator,
keyword,
kind,
label,
label_break_value,
lang,
lang_items,
lib,
link,
linkage,
link_args,
link_cfg,
link_llvm_intrinsics,
link_name,
link_section,
linkage,
lint_reasons,
local_inner_macros,
log_syntax,
loop_break_value,
macro_at_most_once_rep,
macro_escape,
macro_export,
macro_lifetime_matcher,
macro_literal_matcher,
macro_reexport,
macro_rules,
macros_in_extern,
macro_use,
macro_vis_matcher,
main,
managed_boxes,
marker,
marker_trait_attr,
masked,
match_beginning_vert,
match_default_bindings,
may_dangle,
message,
min_const_fn,
min_const_unsafe_fn,
mips_target_feature,
mmx_target_feature,
module,
more_struct_aliases,
movbe_target_feature,
must_use,
naked,
naked_functions,
name,
needs_allocator,
needs_panic_runtime,
negate_unsigned,
never,
never_type,
next,
nll,
no_builtins,
no_core,
no_crate_inject,
no_debug,
no_default_passes,
no_implicit_prelude,
no_inline,
no_link,
no_main,
no_mangle,
non_ascii_idents,
None,
non_exhaustive,
non_modrs_mods,
no_stack_check,
no_start,
no_std,
non_exhaustive,
not,
note,
Ok,
omit_gdb_pretty_printer_section,
on,
on_unimplemented,
oom,
ops,
optimize,
optimize_attribute,
optin_builtin_traits,
option,
Option,
opt_out_copy,
overlapping_marker_traits,
packed,
panic_handler,
panic_impl,
panic_implementation,
panic_runtime,
passes,
path,
pattern_parentheses,
Pending,
pin,
Pin,
platform_intrinsics,
plugin,
plugin_registrar,
plugins,
Poll,
poll_with_tls_context,
powerpc_target_feature,
precise_pointer_size_matching,
prelude,
prelude_import,
primitive,
proc_dash_macro: "proc-macro",
proc_macro,
proc_macro_attribute,
proc_macro_derive,
proc_macro_expr,
proc_macro_gen,
proc_macro_hygiene,
proc_macro_mod,
proc_macro_non_items,
proc_macro_path_invoc,
profiler_runtime,
pub_restricted,
pushpop_unsafe,
quad_precision_float,
question_mark,
quote,
Range,
RangeFrom,
RangeFull,
RangeInclusive,
RangeTo,
RangeToInclusive,
raw_identifiers,
Ready,
reason,
recursion_limit,
reexport_test_harness_main,
reflect,
relaxed_adts,
repr,
repr128,
repr_align,
repr_align_enum,
repr_packed,
repr_simd,
repr_transparent,
re_rebalance_coherence,
result,
Result,
Return,
rlib,
rtm_target_feature,
rust,
rust_2015_preview,
rust_2018_preview,
rust_begin_unwind,
rustc_allocator_nounwind,
rustc_allow_const_fn_ptr,
rustc_args_required_const,
rustc_attrs,
rustc_clean,
rustc_const_unstable,
rustc_conversion_suggestion,
rustc_copy_clone_marker,
rustc_def_path,
rustc_deprecated,
rustc_diagnostic_macros,
rustc_dirty,
rustc_doc_only_macro,
rustc_dump_env_program_clauses,
rustc_dump_program_clauses,
rustc_dump_user_substs,
rustc_error,
@ -191,13 +478,21 @@ symbols! {
rustc_layout_scalar_valid_range_end,
rustc_layout_scalar_valid_range_start,
rustc_mir,
rustc_object_lifetime_default,
rustc_on_unimplemented,
rustc_outlives,
rustc_paren_sugar,
rustc_partition_codegened,
rustc_partition_reused,
rustc_peek,
rustc_peek_definite_init,
rustc_peek_maybe_init,
rustc_peek_maybe_uninit,
rustc_private,
rustc_proc_macro_decls,
rustc_promotable,
rustc_regions,
rustc_stable,
rustc_std_internal_symbol,
rustc_symbol_name,
rustc_synthetic,
@ -205,23 +500,108 @@ symbols! {
rustc_then_this_would_need,
rustc_transparent_macro,
rustc_variance,
rustdoc,
rust_eh_personality,
rust_eh_unwind_resume,
rust_oom,
__rust_unstable_column,
rvalue_static_promotion,
sanitizer_runtime,
self_in_typedefs,
self_struct_ctor,
Send,
should_panic,
simd,
simd_ffi,
since,
size,
slice_patterns,
slicing_syntax,
Some,
specialization,
speed,
spotlight,
sse4a_target_feature,
stable,
staged_api,
start,
static_in_const,
staticlib,
static_nobundle,
static_recursion,
std,
stmt_expr_attributes,
stop_after_dataflow,
struct_field_attributes,
struct_inherit,
structural_match,
struct_variant,
suggestion,
target_feature,
target_has_atomic,
target_thread_local,
task,
tbm_target_feature,
termination_trait,
termination_trait_test,
test,
test_2018_feature,
test_accepted_feature,
test_removed_feature,
test_runner,
thread_local,
tool_attributes,
tool_lints,
trace_macros,
trait_alias,
transmute,
transparent,
trivial_bounds,
Try,
try_blocks,
tuple_indexing,
ty,
type_alias_enum_variants,
type_ascription,
type_length_limit,
type_macros,
u128,
u16,
u32,
u64,
u8,
unboxed_closures,
underscore_const_names,
underscore_imports,
underscore_lifetimes,
uniform_paths,
universal_impl_trait,
unmarked_api,
unrestricted_attribute_tokens,
unsafe_destructor_blind_to_params,
unsafe_no_drop_flag,
unsized_locals,
unsized_tuple_coercion,
unstable,
untagged_unions,
unwind,
unwind_attributes,
used,
use_extern_macros,
use_nested_groups,
usize,
v1,
vis,
visible_private_types,
volatile,
warn,
warn_directory_ownership,
wasm_import_module,
wasm_target_feature,
while_let,
windows,
windows_subsystem,
Yield,
}
}