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https://github.com/yhirose/cpp-peglib.git
synced 2024-12-22 20:05:31 +00:00
Changed 'undefined' to 'nil'.
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@ -38,7 +38,7 @@ const auto grammar_ = R"(
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WHILE <- while _ EXPRESSION _ BLOCK
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IF <- if _ EXPRESSION _ BLOCK (_ else _ if _ EXPRESSION _ BLOCK)* (_ else _ BLOCK)?
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PRIMARY <- WHILE / IF / FUNCTION / OBJECT / ARRAY / UNDEFINED / BOOLEAN / NUMBER / IDENTIFIER / STRING / INTERPOLATED_STRING / '(' _ EXPRESSION _ ')'
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PRIMARY <- WHILE / IF / FUNCTION / OBJECT / ARRAY / NIL / BOOLEAN / NUMBER / IDENTIFIER / STRING / INTERPOLATED_STRING / '(' _ EXPRESSION _ ')'
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FUNCTION <- fn _ PARAMETERS _ BLOCK
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PARAMETERS <- '(' _ (PARAMETER (_ ',' _ PARAMETER)*)? _ ')'
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@ -63,7 +63,7 @@ const auto grammar_ = R"(
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ARRAY <- '[' _ SEQUENCE _ ']' (_ '(' _ EXPRESSION (_ ',' _ EXPRESSION)? _ ')')?
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UNDEFINED <- < 'undefined' _wd_ >
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NIL <- < 'nil' _wd_ >
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BOOLEAN <- < ('true' / 'false') _wd_ >
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NUMBER <- < [0-9]+ >
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@ -160,9 +160,9 @@ struct ArrayValue : public ObjectValue {
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struct Value
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{
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enum Type { Undefined, Bool, Long, String, Object, Array, Function };
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enum Type { Nil, Bool, Long, String, Object, Array, Function };
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Value() : type(Undefined) {}
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Value() : type(Nil) {}
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Value(const Value& rhs) : type(rhs.type), v(rhs.v) {}
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Value(Value&& rhs) : type(rhs.type), v(rhs.v) {}
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@ -256,7 +256,7 @@ struct Value
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std::string str() const {
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switch (type) {
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case Undefined: return "undefined";
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case Nil: return "nil";
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case Bool: return to_bool() ? "true" : "false";
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case Long: return std::to_string(to_long());
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case String: return "'" + to_string() + "'";
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@ -275,7 +275,7 @@ struct Value
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bool operator==(const Value& rhs) const {
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switch (type) {
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case Undefined: return rhs.type == Undefined;
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case Nil: return rhs.type == Nil;
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case Bool: return to_bool() == rhs.to_bool();
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case Long: return to_long() == rhs.to_long();
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case String: return to_string() == rhs.to_string();
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@ -291,7 +291,7 @@ struct Value
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bool operator<=(const Value& rhs) const {
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switch (type) {
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case Undefined: return false;
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case Nil: return false;
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case Bool: return to_bool() <= rhs.to_bool();
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case Long: return to_long() <= rhs.to_long();
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case String: return to_string() <= rhs.to_string();
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@ -303,7 +303,7 @@ struct Value
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bool operator<(const Value& rhs) const {
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switch (type) {
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case Undefined: return false;
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case Nil: return false;
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case Bool: return to_bool() < rhs.to_bool();
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case Long: return to_long() < rhs.to_long();
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case String: return to_string() < rhs.to_string();
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@ -315,7 +315,7 @@ struct Value
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bool operator>=(const Value& rhs) const {
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switch (type) {
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case Undefined: return false;
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case Nil: return false;
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case Bool: return to_bool() >= rhs.to_bool();
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case Long: return to_long() >= rhs.to_long();
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case String: return to_string() >= rhs.to_string();
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@ -327,7 +327,7 @@ struct Value
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bool operator>(const Value& rhs) const {
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switch (type) {
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case Undefined: return false;
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case Nil: return false;
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case Bool: return to_bool() > rhs.to_bool();
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case Long: return to_long() > rhs.to_long();
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case String: return to_string() > rhs.to_string();
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@ -575,7 +575,7 @@ struct Interpreter
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case "IDENTIFIER"_: return eval_identifier(ast, env);
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case "OBJECT"_: return eval_object(ast, env);
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case "ARRAY"_: return eval_array(ast, env);
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case "UNDEFINED"_: return eval_undefined(ast, env);
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case "NIL"_: return eval_nil(ast, env);
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case "BOOLEAN"_: return eval_bool(ast, env);
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case "NUMBER"_: return eval_number(ast, env);
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case "INTERPOLATED_STRING"_: return eval_interpolated_string(ast, env);
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@ -813,7 +813,7 @@ private:
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}
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bool is_keyword(const std::string& ident) const {
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static std::set<std::string> keywords = { "undefined", "true", "false", "mut", "debugger", "return", "while", "if", "else", "fn" };
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static std::set<std::string> keywords = { "nil", "true", "false", "mut", "debugger", "return", "while", "if", "else", "fn" };
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return keywords.find(ident) != keywords.end();
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}
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@ -924,7 +924,7 @@ private:
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return Value(std::move(arr));
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}
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Value eval_undefined(const peg::Ast& ast, std::shared_ptr<Environment> env) {
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Value eval_nil(const peg::Ast& ast, std::shared_ptr<Environment> env) {
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return Value();
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};
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@ -27,23 +27,23 @@ test_return = fn () {
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assert(val == 1)
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}
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test_undefined = fn () {
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assert(undefined == undefined)
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assert(!(undefined != undefined))
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test_nil = fn () {
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assert(nil == nil)
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assert(!(nil != nil))
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a = undefined
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assert(a == undefined)
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assert(!(a != undefined))
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assert(!(a <= undefined))
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assert(!(a < undefined))
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assert(!(a >= undefined))
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assert(!(a > undefined))
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assert(undefined == a)
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assert(!(undefined != a))
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assert(!(undefined <= a))
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assert(!(undefined < a))
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assert(!(undefined >= a))
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assert(!(undefined > a))
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a = nil
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assert(a == nil)
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assert(!(a != nil))
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assert(!(a <= nil))
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assert(!(a < nil))
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assert(!(a >= nil))
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assert(!(a > nil))
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assert(nil == a)
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assert(!(nil != a))
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assert(!(nil <= a))
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assert(!(nil < a))
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assert(!(nil >= a))
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assert(!(nil > a))
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}
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test_closure = fn () {
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@ -83,7 +83,7 @@ test_array = fn () {
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assert(e.size() == 3 && e[-1] == 3)
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f = [1,2,3](5)
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assert(f.size() == 5 && f[-1] == undefined)
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assert(f.size() == 5 && f[-1] == nil)
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}
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g_ = 1
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@ -114,7 +114,7 @@ test_object = fn () {
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a = {}
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a.b = 1
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assert(a.a == undefined)
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assert(a.a == nil)
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assert(a.b == 1)
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assert(a.size() == 1)
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}
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@ -233,7 +233,7 @@ debugger
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test_call()
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test_return()
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test_closure()
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test_undefined()
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test_nil()
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test_array()
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test_function()
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test_object()
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