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Rename "PatternVariable" names for clarity (#630)

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Pretty much any names will be awkward, since these types represent cases where an `Expression` is not an expression, and a `Value` is not a value, but we can at least be more explicit about the fact that they represent bindings rather than variable usages.
This commit is contained in:
Geoff Romer
2021-07-09 10:11:01 -07:00
committed by GitHub
parent 4f1b2198ff
commit b3d4c56ef2
7 changed files with 44 additions and 46 deletions
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executable_semantics/ast/expression.h
+7 -8
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@@ -33,7 +33,7 @@ enum class ExpressionKind {
IntTypeLiteral,
ContinuationTypeLiteral, // The type of a continuation value.
IntLiteral,
PatternVariableExpression,
BindingExpression,
PrimitiveOperatorExpression,
TupleLiteral,
TypeTypeLiteral,
@@ -72,9 +72,8 @@ struct IndexExpression {
const Expression* offset;
};
struct PatternVariableExpression {
static constexpr ExpressionKind Kind =
ExpressionKind::PatternVariableExpression;
struct BindingExpression {
static constexpr ExpressionKind Kind = ExpressionKind::BindingExpression;
std::string name;
const Expression* type;
};
@@ -140,8 +139,8 @@ struct Expression {
static auto MakeIdentifierExpression(int line_num, std::string var)
-> const Expression*;
static auto MakePatternVariableExpression(int line_num, std::string var,
const Expression* type)
static auto MakeBindingExpression(int line_num, std::string var,
const Expression* type)
-> const Expression*;
static auto MakeIntLiteral(int line_num, int i) -> const Expression*;
static auto MakeBoolLiteral(int line_num, bool b) -> const Expression*;
@@ -168,7 +167,7 @@ struct Expression {
auto GetIdentifierExpression() const -> const IdentifierExpression&;
auto GetFieldAccessExpression() const -> const FieldAccessExpression&;
auto GetIndexExpression() const -> const IndexExpression&;
auto GetPatternVariableExpression() const -> const PatternVariableExpression&;
auto GetBindingExpression() const -> const BindingExpression&;
auto GetIntLiteral() const -> int;
auto GetBoolLiteral() const -> bool;
auto GetTupleLiteral() const -> const TupleLiteral&;
@@ -179,7 +178,7 @@ struct Expression {
private:
std::variant<IdentifierExpression, FieldAccessExpression, IndexExpression,
PatternVariableExpression, IntLiteral, BoolLiteral, TupleLiteral,
BindingExpression, IntLiteral, BoolLiteral, TupleLiteral,
PrimitiveOperatorExpression, CallExpression, FunctionTypeLiteral,
AutoTypeLiteral, BoolTypeLiteral, IntTypeLiteral,
ContinuationTypeLiteral, TypeTypeLiteral>