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Code Issues Packages Projects Releases 10 Wiki Activity

Let variables (#1095)

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* Modify parser and AST nodes to include let statement

* Implement let variables

* Remove redundant code in fail_match_choice test

* Add comment for has_value_category()

* Apply suggestions from code review

Co-authored-by: Jon Meow <46229924+jonmeow@users.noreply.github.com>

* clang-format changes

* Update comments for new BindingPattern methods

* Implement nested vars in patterns

* Apply suggestions from @geoffromer's code review

Co-authored-by: Geoff Romer <gromer@google.com>

* Implement changes from code review.

* Remove maybe_var_pattern grammar rule

Co-authored-by: Jon Meow <46229924+jonmeow@users.noreply.github.com>
Co-authored-by: Geoff Romer <gromer@google.com>
This commit is contained in:
Darshal Shetty
2022-03-11 16:30:24 -05:00
committed by GitHub
co-authored by Jon Meow Geoff Romer
parent 93842ad878
commit 20b272446f
20 changed files with 340 additions and 23 deletions
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executable_semantics/ast/statement.h
+5 -2
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@@ -108,10 +108,11 @@ class Assign : public Statement {
class VariableDefinition : public Statement {
public:
VariableDefinition(SourceLocation source_loc, Nonnull<Pattern*> pattern,
Nonnull<Expression*> init)
Nonnull<Expression*> init, ValueCategory value_category)
: Statement(AstNodeKind::VariableDefinition, source_loc),
pattern_(pattern),
init_(init) {}
init_(init),
value_category_(value_category) {}
static auto classof(const AstNode* node) -> bool {
return InheritsFromVariableDefinition(node->kind());
@@ -121,10 +122,12 @@ class VariableDefinition : public Statement {
auto pattern() -> Pattern& { return *pattern_; }
auto init() const -> const Expression& { return *init_; }
auto init() -> Expression& { return *init_; }
auto value_category() const -> ValueCategory { return value_category_; }
private:
Nonnull<Pattern*> pattern_;
Nonnull<Expression*> init_;
ValueCategory value_category_;
};
class If : public Statement {