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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/ast/pattern.h
+6 -8
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@@ -54,12 +54,10 @@ class Pattern : public AstNode {
// Sets the static type of this expression. Can only be called once, during
// typechecking.
void set_static_type(Nonnull<const Value*> type) { static_type_ = type; }
// Returns whether the static type has been set. Should only be called
// during typechecking: before typechecking it's guaranteed to be false,
// and after typechecking it's guaranteed to be true.
auto has_static_type() const -> bool { return static_type_.has_value(); }
void set_static_type(Nonnull<const Value*> type) {
CHECK(!static_type_.has_value());
static_type_ = type;
}
// The value of this pattern. Cannot be called before typechecking.
// TODO rename to avoid confusion with BindingPattern::constant_value
@@ -101,7 +99,7 @@ class AutoPattern : public Pattern {
// a name to it.
class BindingPattern : public Pattern {
public:
using ImplementsCarbonNamedEntity = void;
using ImplementsCarbonValueNode = void;
BindingPattern(SourceLocation source_loc, std::string name,
Nonnull<Pattern*> type)
@@ -115,7 +113,7 @@ class BindingPattern : public Pattern {
// The name this pattern binds, if any. If equal to AnonymousName, indicates
// that this BindingPattern does not bind a name, which in turn means it
// should not be used as a NamedEntity.
// should not be used as a ValueNode.
auto name() const -> const std::string& { return name_; }
// The pattern specifying the type of values that this pattern matches.