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carbon-lang/executable_semantics/interpreter/interpreter.h
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7cce1bd124 interfaces, impls, and constrained generics (basics) (#1073)
* 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>
2022-03-02 15:58:45 -05:00

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// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
#ifndef EXECUTABLE_SEMANTICS_INTERPRETER_INTERPRETER_H_
#define EXECUTABLE_SEMANTICS_INTERPRETER_INTERPRETER_H_
#include <optional>
#include <utility>
#include <vector>
#include "common/ostream.h"
#include "executable_semantics/ast/ast.h"
#include "executable_semantics/ast/declaration.h"
#include "executable_semantics/ast/expression.h"
#include "executable_semantics/ast/pattern.h"
#include "executable_semantics/interpreter/action.h"
#include "executable_semantics/interpreter/heap.h"
#include "executable_semantics/interpreter/value.h"
#include "llvm/ADT/ArrayRef.h"
namespace Carbon {
// Interprets the program defined by `ast`, allocating values on `arena` and
// printing traces if `trace` is true.
auto InterpProgram(const AST& ast, Nonnull<Arena*> arena, bool trace) -> int;
// Interprets `e` at compile-time, allocating values on `arena` and
// printing traces if `trace` is true. The caller must ensure that all the
// code this evaluates has been typechecked.
auto InterpExp(Nonnull<const Expression*> e, Nonnull<Arena*> arena, bool trace)
-> Nonnull<const Value*>;
// Interprets `p` at compile-time, allocating values on `arena` and
// printing traces if `trace` is true. The caller must ensure that all the
// code this evaluates has been typechecked.
auto InterpPattern(Nonnull<const Pattern*> p, Nonnull<Arena*> arena, bool trace)
-> Nonnull<const Value*>;
// Attempts to match `v` against the pattern `p`, returning whether matching
// is successful. If it is, populates **bindings with the variables bound by
// the match; `bindings` should only be nullopt in contexts where `p`
// is not permitted to bind variables. **bindings may be modified even if the
// match is unsuccessful, so it should typically be created for the
// PatternMatch call and then merged into an existing scope on success.
// TODO: consider moving this to a separate header.
[[nodiscard]] auto PatternMatch(Nonnull<const Value*> p,
Nonnull<const Value*> v,
SourceLocation source_loc,
std::optional<Nonnull<RuntimeScope*>> bindings)
-> bool;
} // namespace Carbon
#endif // EXECUTABLE_SEMANTICS_INTERPRETER_INTERPRETER_H_