srctree

Robin Linden parent d9eb03b1 1f2bd5ab
js: Add support for ExpressionStatements

js/ast.h added: 14, removed: 10, total 4

@@ -87,10 +87,6 @@ struct Identifier {

std::string name;

};

struct ExpressionStatement {

std::shared_ptr<Expression> expression;

};

// TODO(robinlinden): Support more operators.

enum class BinaryOperator {

Minus,

@@ -143,6 +139,10 @@ struct VariableDeclaration {

Kind kind{Kind::Var};

};

struct ExpressionStatement {

Expression expression;

};

struct ReturnStatement {

std::optional<Expression> argument;

};

js/ast_executor.h added: 14, removed: 10, total 4

@@ -7,7 +7,6 @@

#include "js/ast.h"

#include <exception>

#include <functional>

#include <map>

#include <string>

@@ -30,8 +29,7 @@ public:

Value operator()(Declaration const &v) { return std::visit(*this, v); }

Value operator()(Statement const &v) { return std::visit(*this, v); }

// TODO(robinlinden): Implement.

Value operator()(ExpressionStatement const &) { std::terminate(); }

Value operator()(ExpressionStatement const &v) { return execute(v.expression); }

Value operator()(BinaryExpression const &v) {

auto lhs = execute(*v.lhs);

js/ast_executor_test.cpp added: 14, removed: 10, total 4

@@ -127,5 +127,11 @@ int main() {

expect_eq(e.execute(call), Value{});

});

etest::test("expression statement", [] {

AstExecutor e;

expect_eq(e.execute(ExpressionStatement{StringLiteral{"hi"}}), Value{"hi"});

expect_eq(e.execute(ExpressionStatement{NumericLiteral{1213}}), Value{1213});

});

return etest::run_all_tests();

}