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https://github.com/carbon-language/carbon-lang.git
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eb69d7420e
* Add `RequireCompleteFacetType` and `ResolveFacetTypeImplWitness` to `check::Context`. Goal was to move code from `impl.cpp` (mostly) without functional changes. * Complete type information is cached with the facet type, and is stored in a `complete_facet_types()` table. * Main functional change is to diagnose attempts to use a rewrite constraint on an associated function. Some existing diagnostics have been updated. * Remove `check::Context::RequireDefinedType`: * For class types, use `RequireCompleteType` * For facet types, use `RequireCompleteFacetType` * Introduce a `SemIR::SpecificInterface` to hold an interface and specific id pair. * Keep the specific interface ids in the impl object. * Avoid some extra copies in `Dump` functions. * Future work missing from this PR: * Resolving for member access or actions that require impl lookup. * Resolving rewrites constraints that refer to non-concrete values. * Any support for adding implied constraints that result from a `where` clause (though TODOs have been added). --------- Co-authored-by: Josh L <josh11b@users.noreply.github.com> Co-authored-by: Richard Smith <richard@metafoo.co.uk> Co-authored-by: Dana Jansens <danakj@orodu.net>
122 lines
4.6 KiB
C++
122 lines
4.6 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#include "toolchain/check/context.h"
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#include <optional>
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#include <string>
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#include <utility>
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#include "common/check.h"
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#include "common/vlog.h"
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#include "llvm/ADT/Sequence.h"
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#include "toolchain/check/convert.h"
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#include "toolchain/check/decl_name_stack.h"
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#include "toolchain/check/eval.h"
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#include "toolchain/check/generic.h"
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#include "toolchain/check/generic_region_stack.h"
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#include "toolchain/check/import.h"
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#include "toolchain/check/import_ref.h"
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#include "toolchain/check/inst_block_stack.h"
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#include "toolchain/check/interface.h"
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#include "toolchain/check/merge.h"
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#include "toolchain/check/type_completion.h"
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#include "toolchain/diagnostics/diagnostic_emitter.h"
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#include "toolchain/diagnostics/format_providers.h"
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#include "toolchain/lex/tokenized_buffer.h"
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#include "toolchain/parse/node_ids.h"
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#include "toolchain/parse/node_kind.h"
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#include "toolchain/sem_ir/file.h"
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#include "toolchain/sem_ir/formatter.h"
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#include "toolchain/sem_ir/generic.h"
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#include "toolchain/sem_ir/ids.h"
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#include "toolchain/sem_ir/import_ir.h"
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#include "toolchain/sem_ir/inst.h"
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#include "toolchain/sem_ir/inst_kind.h"
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#include "toolchain/sem_ir/name_scope.h"
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#include "toolchain/sem_ir/type_info.h"
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#include "toolchain/sem_ir/typed_insts.h"
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namespace Carbon::Check {
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Context::Context(DiagnosticEmitter* emitter,
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Parse::GetTreeAndSubtreesFn tree_and_subtrees_getter,
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SemIR::File* sem_ir, int imported_ir_count, int total_ir_count,
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llvm::raw_ostream* vlog_stream)
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: emitter_(emitter),
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tree_and_subtrees_getter_(tree_and_subtrees_getter),
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sem_ir_(sem_ir),
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vlog_stream_(vlog_stream),
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node_stack_(sem_ir->parse_tree(), vlog_stream),
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inst_block_stack_("inst_block_stack_", *sem_ir, vlog_stream),
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pattern_block_stack_("pattern_block_stack_", *sem_ir, vlog_stream),
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param_and_arg_refs_stack_(*sem_ir, vlog_stream, node_stack_),
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args_type_info_stack_("args_type_info_stack_", *sem_ir, vlog_stream),
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decl_name_stack_(this),
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scope_stack_(sem_ir_),
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vtable_stack_("vtable_stack_", *sem_ir, vlog_stream),
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global_init_(this),
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region_stack_(
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[this](SemIRLoc loc, std::string label) { TODO(loc, label); }) {
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// Prepare fields which relate to the number of IRs available for import.
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import_irs().Reserve(imported_ir_count);
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import_ir_constant_values_.reserve(imported_ir_count);
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check_ir_map_.resize(total_ir_count, SemIR::ImportIRId::None);
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// TODO: Remove this and add a `VerifyOnFinish` once we properly push and pop
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// in the right places.
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generic_region_stack().Push();
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}
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auto Context::TODO(SemIRLoc loc, std::string label) -> bool {
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CARBON_DIAGNOSTIC(SemanticsTodo, Error, "semantics TODO: `{0}`", std::string);
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emitter_->Emit(loc, SemanticsTodo, std::move(label));
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return false;
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}
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auto Context::VerifyOnFinish() -> void {
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// Information in all the various context objects should be cleaned up as
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// various pieces of context go out of scope. At this point, nothing should
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// remain.
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// node_stack_ will still contain top-level entities.
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inst_block_stack_.VerifyOnFinish();
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pattern_block_stack_.VerifyOnFinish();
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param_and_arg_refs_stack_.VerifyOnFinish();
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args_type_info_stack_.VerifyOnFinish();
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CARBON_CHECK(struct_type_fields_stack_.empty());
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// TODO: Add verification for decl_name_stack_ and
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// decl_introducer_state_stack_.
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scope_stack_.VerifyOnFinish();
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// TODO: Add verification for generic_region_stack_.
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}
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auto Context::Finalize() -> void {
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// Pop information for the file-level scope.
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sem_ir().set_top_inst_block_id(inst_block_stack().Pop());
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scope_stack().Pop();
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// Finalizes the list of exports on the IR.
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inst_blocks().Set(SemIR::InstBlockId::Exports, exports_);
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// Finalizes the ImportRef inst block.
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inst_blocks().Set(SemIR::InstBlockId::ImportRefs, import_ref_ids_);
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// Finalizes __global_init.
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global_init_.Finalize();
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}
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auto Context::PrintForStackDump(llvm::raw_ostream& output) const -> void {
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output << "Check::Context\n";
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// In a stack dump, this is probably indented by a tab. We treat that as 8
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// spaces then add a couple to indent past the Context label.
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constexpr int Indent = 10;
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node_stack_.PrintForStackDump(Indent, output);
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inst_block_stack_.PrintForStackDump(Indent, output);
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pattern_block_stack_.PrintForStackDump(Indent, output);
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param_and_arg_refs_stack_.PrintForStackDump(Indent, output);
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args_type_info_stack_.PrintForStackDump(Indent, output);
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}
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} // namespace Carbon::Check
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