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7cce1bd124
* interfaces, impls, and constrained generics (basics) * separate type checking into declare vs. type check, removing redundancy * external impls * added impl scopes to handle generics calling generics * cleanup * more cleanup * Update executable_semantics/testdata/interface/external_impl_point_vector.carbon Co-authored-by: josh11b <josh11b@users.noreply.github.com> * Update executable_semantics/testdata/interface/generic_call_generic.carbon Co-authored-by: josh11b <josh11b@users.noreply.github.com> * Update executable_semantics/testdata/interface/tuple_vector_add_scale.carbon Co-authored-by: josh11b <josh11b@users.noreply.github.com> * Update executable_semantics/testdata/interface/vector_point_add_scale.carbon Co-authored-by: josh11b <josh11b@users.noreply.github.com> * change ImplementationDeclaration to ImplDeclaration * remove impl_type_value * split NamedEntity into two * changed GetName to be a free function * adding comments * more edits to respond to review * introduce ImplBinding, remove punning on GenericBinding * new test case and some minor edits * refactor GetMember and GetField to move impl logic to interpreter * remove commennt * change EntityView to ImplBinding in FieldAccess... * move ImplBinding * review response * added example to impl_scope.h * minor edits * Update executable_semantics/interpreter/field_path.h Co-authored-by: Geoff Romer <gromer@google.com> * Update executable_semantics/interpreter/value.cpp Co-authored-by: Geoff Romer <gromer@google.com> * Update executable_semantics/interpreter/interpreter.cpp Co-authored-by: Geoff Romer <gromer@google.com> * Update executable_semantics/ast/expression.h Co-authored-by: Geoff Romer <gromer@google.com> * Update executable_semantics/ast/expression.h Co-authored-by: Geoff Romer <gromer@google.com> * Update executable_semantics/ast/generic_binding.h Co-authored-by: Geoff Romer <gromer@google.com> * more edits from review * review response * Update executable_semantics/ast/static_scope.h Co-authored-by: Geoff Romer <gromer@google.com> * remove ImplType, renamed node_view to value_node Co-authored-by: josh11b <josh11b@users.noreply.github.com> Co-authored-by: Geoff Romer <gromer@google.com>
67 lines
2.0 KiB
C++
67 lines
2.0 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 "executable_semantics/interpreter/heap.h"
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#include "executable_semantics/common/error.h"
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#include "llvm/ADT/StringExtras.h"
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namespace Carbon {
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auto Heap::AllocateValue(Nonnull<const Value*> v) -> AllocationId {
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// Putting the following two side effects together in this function
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// ensures that we don't do anything else in between, which is really bad!
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// Consider whether to include a copy of the input v in this function
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// or to leave it up to the caller.
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AllocationId a(values_.size());
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values_.push_back(v);
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alive_.push_back(true);
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return a;
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}
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auto Heap::Read(const Address& a, SourceLocation source_loc) const
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-> Nonnull<const Value*> {
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this->CheckAlive(a.allocation_, source_loc);
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return values_[a.allocation_.index_]->GetField(arena_, a.field_path_,
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source_loc);
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}
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void Heap::Write(const Address& a, Nonnull<const Value*> v,
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SourceLocation source_loc) {
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this->CheckAlive(a.allocation_, source_loc);
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values_[a.allocation_.index_] = values_[a.allocation_.index_]->SetField(
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arena_, a.field_path_, v, source_loc);
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}
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void Heap::CheckAlive(AllocationId allocation,
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SourceLocation source_loc) const {
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if (!alive_[allocation.index_]) {
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FATAL_RUNTIME_ERROR(source_loc)
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<< "undefined behavior: access to dead value "
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<< *values_[allocation.index_];
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}
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}
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void Heap::Deallocate(AllocationId allocation) {
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if (alive_[allocation.index_]) {
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alive_[allocation.index_] = false;
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} else {
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FATAL() << "deallocating an already dead value: "
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<< *values_[allocation.index_];
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}
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}
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void Heap::Print(llvm::raw_ostream& out) const {
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llvm::ListSeparator sep;
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for (size_t i = 0; i < values_.size(); ++i) {
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out << sep;
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if (!alive_[i]) {
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out << "!!";
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}
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out << *values_[i];
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}
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}
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} // namespace Carbon
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