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05b4674054
`rustc_parse` top-level cleanups
A bunch of improvements in and around `compiler/rustc_parse/src/lib.rs`. Many of the changes streamline the API in that file from this (12 functions and one macro):
```
name args return type
---- ---- -----------
panictry_buffer! Result<T, Vec<Diag>> T
pub parse_crate_from_file path PResult<Crate>
pub parse_crate_attrs_from_file path PResult<AttrVec>
pub parse_crate_from_source_str name,src PResult<Crate>
pub parse_crate_attrs_from_source_str name,src PResult<AttrVec>
pub new_parser_from_source_str name,src Parser
pub maybe_new_parser_from_source_str name,src Result<Parser, Vec<Diag>>
pub new_parser_from_file path,error_sp Parser
maybe_source_file_to_parser srcfile Result<Parser, Vec<Diag>>
pub parse_stream_from_source_str name,src,override_sp TokenStream
pub source_file_to_stream srcfile,override_sp TokenStream
maybe_file_to_stream srcfile,override_sp Result<TokenStream, Vec<Diag>>
pub stream_to_parser stream,subparser_name Parser
```
to this:
```
name args return type
---- ---- -----------
unwrap_or_emit_fatal Result<T, Vec<Diag>> T
pub new_parser_from_source_str name,src Result<Parser, Vec<Diag>>
pub new_parser_from_file path,error_sp Result<Parser, Vec<Diag>>
new_parser_from_source_file srcfile Result<Parser, Vec<Diag>>
pub source_str_to_stream name,src,override_sp Result<TokenStream, Vec<Diag>>
source_file_to_stream srcfile,override_sp Result<TokenStream, Vec<Diag>>
```
I found the old API quite confusing, with lots of similar-sounding function names and no clear structure. I think the new API is much better.
r? `@spastorino`
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|---|---|---|
| .. | ||
| rustc | ||
| rustc_abi | ||
| rustc_arena | ||
| rustc_ast | ||
| rustc_ast_ir | ||
| rustc_ast_lowering | ||
| rustc_ast_passes | ||
| rustc_ast_pretty | ||
| rustc_attr | ||
| rustc_baked_icu_data | ||
| rustc_borrowck | ||
| rustc_builtin_macros | ||
| rustc_codegen_cranelift | ||
| rustc_codegen_gcc | ||
| rustc_codegen_llvm | ||
| rustc_codegen_ssa | ||
| rustc_const_eval | ||
| rustc_data_structures | ||
| rustc_driver | ||
| rustc_driver_impl | ||
| rustc_error_codes | ||
| rustc_error_messages | ||
| rustc_errors | ||
| rustc_expand | ||
| rustc_feature | ||
| rustc_fluent_macro | ||
| rustc_fs_util | ||
| rustc_graphviz | ||
| rustc_hir | ||
| rustc_hir_analysis | ||
| rustc_hir_pretty | ||
| rustc_hir_typeck | ||
| rustc_incremental | ||
| rustc_index | ||
| rustc_index_macros | ||
| rustc_infer | ||
| rustc_interface | ||
| rustc_lexer | ||
| rustc_lint | ||
| rustc_lint_defs | ||
| rustc_llvm | ||
| rustc_log | ||
| rustc_macros | ||
| rustc_metadata | ||
| rustc_middle | ||
| rustc_mir_build | ||
| rustc_mir_dataflow | ||
| rustc_mir_transform | ||
| rustc_monomorphize | ||
| rustc_next_trait_solver | ||
| rustc_parse | ||
| rustc_parse_format | ||
| rustc_passes | ||
| rustc_pattern_analysis | ||
| rustc_privacy | ||
| rustc_query_impl | ||
| rustc_query_system | ||
| rustc_resolve | ||
| rustc_sanitizers | ||
| rustc_serialize | ||
| rustc_session | ||
| rustc_smir | ||
| rustc_span | ||
| rustc_symbol_mangling | ||
| rustc_target | ||
| rustc_trait_selection | ||
| rustc_traits | ||
| rustc_transmute | ||
| rustc_ty_utils | ||
| rustc_type_ir | ||
| rustc_type_ir_macros | ||
| stable_mir | ||