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interfaces, impls, and constrained generics (basics) (#1073)

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* 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>
This commit is contained in:
Jeremy G. Siek
2022-03-02 15:58:45 -05:00
committed by GitHub
co-authored by josh11b Geoff Romer
parent 8f6e42d866
commit 7cce1bd124
43 changed files with 1722 additions and 441 deletions
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executable_semantics/syntax/parser.ypp
+19
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@@ -93,6 +93,7 @@
%token <std::string> sized_type_literal
%token <std::string> string_literal
%type <std::string> designator
%type <ImplKind> impl_kind
%type <std::pair<LibraryName, bool>> package_directive
%type <LibraryName> import_directive
%type <std::vector<LibraryName>> import_directives
@@ -144,6 +145,7 @@
AND
API
ARROW
AS
AUTO
AWAIT
BOOL
@@ -162,12 +164,14 @@
ELSE
EQUAL
EQUAL_EQUAL
EXTERNAL
FALSE
FN
FN_TYPE
IF
IMPL
IMPORT
INTERFACE
LEFT_CURLY_BRACE
LEFT_PARENTHESIS
LEFT_SQUARE_BRACKET
@@ -742,6 +746,21 @@ declaration:
}
| VAR variable_declaration EQUAL expression SEMICOLON
{ $$ = arena->New<VariableDeclaration>(context.source_loc(), $2, $4); }
| INTERFACE identifier LEFT_CURLY_BRACE declaration_list RIGHT_CURLY_BRACE
{
auto ty_ty = arena -> New<TypeTypeLiteral>(context.source_loc());
auto self =
arena -> New<GenericBinding>(context.source_loc(), "Self", ty_ty);
$$ = arena->New<InterfaceDeclaration>(context.source_loc(), $2, self, $4);
}
| impl_kind IMPL expression AS expression LEFT_CURLY_BRACE declaration_list RIGHT_CURLY_BRACE
{ $$ = arena->New<ImplDeclaration>(context.source_loc(), $1, $3, $5, $7); }
;
impl_kind:
// Internal
{ $$ = Carbon::ImplKind::InternalImpl; }
| EXTERNAL
{ $$ = Carbon::ImplKind::ExternalImpl; }
;
declaration_list:
// Empty