mirror of
https://github.com/yhirose/cpp-peglib.git
synced 2024-12-22 20:05:31 +00:00
Added method suport in Array.
This commit is contained in:
parent
5079d3406a
commit
111d5d8476
@ -17,9 +17,10 @@
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UNARY_NOT <- UNARY_NOT_OPERATOR? MULTIPLICATIVE
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UNARY_NOT <- UNARY_NOT_OPERATOR? MULTIPLICATIVE
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MULTIPLICATIVE <- CALL (MULTIPLICATIVE_OPERATOR CALL)*
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MULTIPLICATIVE <- CALL (MULTIPLICATIVE_OPERATOR CALL)*
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CALL <- PRIMARY (ARGUMENTS / INDEX)*
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CALL <- PRIMARY (ARGUMENTS / INDEX / METHOD)*
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ARGUMENTS <- '(' _ (EXPRESSION (',' _ EXPRESSION)*)? ')' _
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ARGUMENTS <- '(' _ (EXPRESSION (',' _ EXPRESSION)*)? ')' _
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INDEX <- '[' _ EXPRESSION ']' _
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INDEX <- '[' _ EXPRESSION ']' _
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METHOD <- '.' _ IDENTIFIER ARGUMENTS
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PRIMARY <- WHILE / IF / FUNCTION / IDENTIFIER / ARRAY / NUMBER / BOOLEAN / STRING / INTERPOLATED_STRING / '(' _ EXPRESSION ')' _
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PRIMARY <- WHILE / IF / FUNCTION / IDENTIFIER / ARRAY / NUMBER / BOOLEAN / STRING / INTERPOLATED_STRING / '(' _ EXPRESSION ')' _
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@ -38,7 +39,7 @@
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IDENTIFIER <- < [a-zA-Z_][a-zA-Z0-9_]* > _
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IDENTIFIER <- < [a-zA-Z_][a-zA-Z0-9_]* > _
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ARRAY <- '[' _ (EXPRESSION (',' _ EXPRESSION)*) ']' _
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ARRAY <- '[' _ (EXPRESSION (',' _ EXPRESSION)*)? ']' _
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NUMBER <- < [0-9]+ > _
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NUMBER <- < [0-9]+ > _
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BOOLEAN <- < ('true' / 'false') > _
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BOOLEAN <- < ('true' / 'false') > _
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STRING <- ['] < (!['] .)* > ['] _
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STRING <- ['] < (!['] .)* > ['] _
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@ -81,7 +81,7 @@ private:
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}
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}
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static Value eval_function(const Ast& ast, shared_ptr<Environment> env) {
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static Value eval_function(const Ast& ast, shared_ptr<Environment> env) {
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vector<Value::FunctionValue::Parameter> params;
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std::vector<Value::FunctionValue::Parameter> params;
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for (auto node: ast.nodes[0]->nodes) {
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for (auto node: ast.nodes[0]->nodes) {
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auto mut = node->nodes[0]->token == "mut";
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auto mut = node->nodes[0]->token == "mut";
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const auto& name = node->nodes[1]->token;
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const auto& name = node->nodes[1]->token;
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@ -90,13 +90,15 @@ private:
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auto body = ast.nodes[1];
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auto body = ast.nodes[1];
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return Value(Value::FunctionValue {
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auto f = Value::FunctionValue(
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params,
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params,
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[=](shared_ptr<Environment> callEnv) {
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[=](shared_ptr<Environment> callEnv) {
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callEnv->set_outer(env);
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callEnv->set_outer(env);
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return eval(*body, callEnv);
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return eval(*body, callEnv);
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}
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}
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});
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);
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return Value(std::move(f));
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};
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};
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static Value eval_call(const Ast& ast, shared_ptr<Environment> env) {
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static Value eval_call(const Ast& ast, shared_ptr<Environment> env) {
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@ -107,14 +109,15 @@ private:
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if (n.tag == AstTag::Arguments) {
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if (n.tag == AstTag::Arguments) {
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// Function call
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// Function call
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const auto& f = val.to_function();
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const auto& f = val.to_function();
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const auto& params = f.data->params;
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const auto& args = n.nodes;
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const auto& args = n.nodes;
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if (f.params.size() <= args.size()) {
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if (params.size() <= args.size()) {
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auto callEnv = make_shared<Environment>();
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auto callEnv = make_shared<Environment>();
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callEnv->initialize("self", val, false);
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callEnv->initialize("self", val, false);
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for (auto iprm = 0u; iprm < f.params.size(); iprm++) {
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for (auto iprm = 0u; iprm < params.size(); iprm++) {
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auto param = f.params[iprm];
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auto param = params[iprm];
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auto arg = args[iprm];
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auto arg = args[iprm];
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auto val = eval(*arg, env);
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auto val = eval(*arg, env);
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callEnv->initialize(param.name, val, param.mut);
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callEnv->initialize(param.name, val, param.mut);
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@ -123,17 +126,41 @@ private:
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callEnv->initialize("__LINE__", Value((long)ast.line), false);
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callEnv->initialize("__LINE__", Value((long)ast.line), false);
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callEnv->initialize("__COLUMN__", Value((long)ast.column), false);
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callEnv->initialize("__COLUMN__", Value((long)ast.column), false);
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val = f.eval(callEnv);
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val = f.data->eval(callEnv);
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} else {
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} else {
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string msg = "arguments error...";
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string msg = "arguments error...";
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throw runtime_error(msg);
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throw runtime_error(msg);
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}
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}
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} else { // n.tag == AstTag::Index
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} else if (n.tag == AstTag::Index) {
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// Array reference
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// Array reference
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const auto& a = val.to_array();
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const auto& arr = val.to_array();
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const auto& idx = eval(*n.nodes[0], env).to_long();
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auto idx = eval(*n.nodes[0], env).to_long();
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if (0 <= idx && idx < static_cast<long>(a.values.size())) {
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if (0 <= idx && idx < static_cast<long>(arr.data->values.size())) {
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val = a.values[idx];
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val = arr.data->values.at(idx);
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}
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} else { // n.tag == AstTag::Property
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// Property
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auto name = n.nodes[0]->token;
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auto prop = val.get_property(name);
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if (prop.get_type() == Value::Function) {
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const auto& pf = prop.to_function();
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auto f = Value::FunctionValue(
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pf.data->params,
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[=](shared_ptr<Environment> callEnv) {
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auto thisEnv = make_shared<Environment>();
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thisEnv->set_outer(env);
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thisEnv->initialize("this", val, false);
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callEnv->set_outer(thisEnv);
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return pf.data->eval(callEnv);
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}
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);
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val = Value(std::move(f));
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} else {
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val = prop;
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}
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}
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}
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}
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}
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}
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@ -251,17 +278,15 @@ private:
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};
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};
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static Value eval_array(const Ast& ast, shared_ptr<Environment> env) {
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static Value eval_array(const Ast& ast, shared_ptr<Environment> env) {
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vector<Value> values;
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Value::ArrayValue arr;
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for (auto i = 0u; i < ast.nodes.size(); i++) {
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for (auto i = 0u; i < ast.nodes.size(); i++) {
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auto expr = ast.nodes[i];
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auto expr = ast.nodes[i];
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auto val = eval(*expr, env);
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auto val = eval(*expr, env);
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values.push_back(val);
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arr.data->values.push_back(val);
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}
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}
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return Value(Value::ArrayValue {
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return Value(std::move(arr));
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values
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});
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}
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}
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static Value eval_number(const Ast& ast, shared_ptr<Environment> env) {
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static Value eval_number(const Ast& ast, shared_ptr<Environment> env) {
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@ -282,6 +307,32 @@ private:
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};
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};
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};
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};
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std::map<std::string, Value> Value::ArrayValue::prototypes = {
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{
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"size",
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Value(FunctionValue(
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{},
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[](shared_ptr<Environment> callEnv) {
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const auto& val = callEnv->get("this");
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long n = val.to_array().data->values.size();
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return Value(n);
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}
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))
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},
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{
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"push",
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Value(FunctionValue {
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{ {"arg", false} },
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[](shared_ptr<Environment> callEnv) {
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const auto& val = callEnv->get("this");
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const auto& arg = callEnv->get("arg");
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val.to_array().data->values.push_back(arg);
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return Value();
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}
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})
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},
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};
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bool run(
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bool run(
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const string& path,
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const string& path,
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shared_ptr<Environment> env,
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shared_ptr<Environment> env,
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@ -6,21 +6,59 @@ struct Environment;
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struct Value
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struct Value
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{
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{
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enum Type { Undefined, Bool, Long, String, Array, Function };
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enum Type { Undefined, Bool, Long, String, Object, Array, Function };
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struct ArrayValue {
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std::vector<Value> values;
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};
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struct FunctionValue {
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struct FunctionValue {
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struct Parameter {
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struct Parameter {
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std::string name;
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std::string name;
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bool mut;
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bool mut;
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};
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};
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struct Data {
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std::vector<Parameter> params;
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std::vector<Parameter> params;
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std::function<Value (std::shared_ptr<Environment> env)> eval;
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std::function<Value (std::shared_ptr<Environment> env)> eval;
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};
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};
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FunctionValue(
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const std::vector<Parameter>& params,
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const std::function<Value (std::shared_ptr<Environment> env)>& eval) {
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data = std::make_shared<Data>();
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data->params = params;
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data->eval = eval;
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}
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std::shared_ptr<Data> data;
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};
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struct ObjectValue {
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Value get_property(const std::string& name) const {
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return data->props.at(name);
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}
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struct Data {
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std::map<std::string, Value> props;
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};
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std::shared_ptr<Data> data = std::make_shared<Data>();
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};
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struct ArrayValue {
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Value get_property(const std::string& name) const {
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if (data->props.find(name) == data->props.end()) {
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return prototypes.at(name);
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}
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return data->props.at(name);
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}
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struct Data {
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std::map<std::string, Value> props;
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std::vector<Value> values;
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};
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std::shared_ptr<Data> data = std::make_shared<Data>();
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static std::map<std::string, Value> prototypes;
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};
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Value() : type(Undefined) {
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Value() : type(Undefined) {
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//std::cout << "Val::def ctor: " << std::endl;
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//std::cout << "Val::def ctor: " << std::endl;
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}
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}
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@ -52,56 +90,84 @@ struct Value
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explicit Value(bool b) : type(Bool), v(b) {}
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explicit Value(bool b) : type(Bool), v(b) {}
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explicit Value(long l) : type(Long), v(l) {}
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explicit Value(long l) : type(Long), v(l) {}
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explicit Value(std::string&& s) : type(String), v(s) {}
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explicit Value(std::string&& s) : type(String), v(s) {}
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explicit Value(ObjectValue&& o) : type(Object), v(0) {}
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explicit Value(ArrayValue&& a) : type(Array), v(a) {}
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explicit Value(ArrayValue&& a) : type(Array), v(a) {}
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explicit Value(FunctionValue&& f) : type(Function), v(f) {}
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explicit Value(FunctionValue&& f) : type(Function), v(f) {}
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long size() const {
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Type get_type() const {
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switch (type) {
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return type;
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case String: return to_string().size();
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case Array: return to_array().values.size();
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}
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throw std::runtime_error("type error.");
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}
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}
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bool to_bool() const {
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bool to_bool() const {
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switch (type) {
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switch (type) {
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case Bool: return v.get<bool>();
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case Bool: return v.get<bool>();
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case Long: return v.get<long>() != 0;
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case Long: return v.get<long>() != 0;
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default: throw std::runtime_error("type error.");
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}
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}
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throw std::runtime_error("type error.");
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}
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}
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long to_long() const {
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long to_long() const {
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switch (type) {
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switch (type) {
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case Bool: return v.get<bool>();
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case Bool: return v.get<bool>();
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case Long: return v.get<long>();
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case Long: return v.get<long>();
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default: throw std::runtime_error("type error.");
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}
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}
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throw std::runtime_error("type error.");
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}
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}
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std::string to_string() const {
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std::string to_string() const {
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switch (type) {
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switch (type) {
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case String: return v.get<std::string>();
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case String: return v.get<std::string>();
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default: throw std::runtime_error("type error.");
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}
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}
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ObjectValue to_object() const {
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switch (type) {
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case Object: return v.get<ObjectValue>();
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default: throw std::runtime_error("type error.");
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}
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}
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throw std::runtime_error("type error.");
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}
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}
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ArrayValue to_array() const {
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ArrayValue to_array() const {
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switch (type) {
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switch (type) {
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case Array: return v.get<ArrayValue>();
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case Array: return v.get<ArrayValue>();
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default: throw std::runtime_error("type error.");
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}
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}
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throw std::runtime_error("type error.");
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}
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}
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FunctionValue to_function() const {
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FunctionValue to_function() const {
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switch (type) {
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switch (type) {
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case Function: return v.get<FunctionValue>();
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case Function: return v.get<FunctionValue>();
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default: throw std::runtime_error("type error.");
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}
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}
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throw std::runtime_error("type error.");
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}
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Value get_property(const std::string& name) const {
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switch (type) {
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case Object: return to_object().get_property(name);
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case Array: return to_array().get_property(name);
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default: throw std::runtime_error("type error.");
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}
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}
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std::string str_object() const {
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const auto& props = to_object().data->props;
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std::string s = "{";
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auto it = props.begin();
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for (; it != props.end(); ++it) {
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if (it != props.begin()) {
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s += ", ";
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}
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s += '"' + it->first + '"';
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s += ": ";
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s += it->second.str();
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}
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s += "}";
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return s;
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}
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}
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std::string str_array() const {
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std::string str_array() const {
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const auto& values = to_array().values;
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const auto& values = to_array().data->values;
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std::string s = "[";
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std::string s = "[";
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for (auto i = 0u; i < values.size(); i++) {
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for (auto i = 0u; i < values.size(); i++) {
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if (i != 0) {
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if (i != 0) {
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@ -119,8 +185,9 @@ struct Value
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case Bool: return to_bool() ? "true" : "false";
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case Bool: return to_bool() ? "true" : "false";
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case Long: return std::to_string(to_long()); break;
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case Long: return std::to_string(to_long()); break;
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case String: return to_string();
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case String: return to_string();
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case Function: return "[function]";
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case Object: return str_object();
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case Array: return str_array();
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case Array: return str_array();
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case Function: return "[function]";
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default: throw std::logic_error("invalid internal condition.");
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default: throw std::logic_error("invalid internal condition.");
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}
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}
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// NOTREACHED
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// NOTREACHED
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@ -206,7 +273,7 @@ struct Value
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private:
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private:
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friend std::ostream& operator<<(std::ostream&, const Value&);
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friend std::ostream& operator<<(std::ostream&, const Value&);
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int type;
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Type type;
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peglib::any v;
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peglib::any v;
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};
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};
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@ -267,20 +334,19 @@ struct Environment
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}
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}
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|
||||||
void setup_built_in_functions() {
|
void setup_built_in_functions() {
|
||||||
initialize(
|
{
|
||||||
"puts",
|
auto f = Value::FunctionValue(
|
||||||
Value(Value::FunctionValue {
|
|
||||||
{ {"arg", true} },
|
{ {"arg", true} },
|
||||||
[](std::shared_ptr<Environment> env) {
|
[](std::shared_ptr<Environment> env) {
|
||||||
std::cout << env->get("arg").str() << std::endl;
|
std::cout << env->get("arg").str() << std::endl;
|
||||||
return Value();
|
return Value();
|
||||||
}
|
}
|
||||||
}),
|
);
|
||||||
false);
|
initialize("puts", Value(std::move(f)), false);
|
||||||
|
}
|
||||||
|
|
||||||
initialize(
|
{
|
||||||
"assert",
|
auto f = Value::FunctionValue(
|
||||||
Value(Value::FunctionValue {
|
|
||||||
{ {"arg", true} },
|
{ {"arg", true} },
|
||||||
[](std::shared_ptr<Environment> env) {
|
[](std::shared_ptr<Environment> env) {
|
||||||
auto cond = env->get("arg").to_bool();
|
auto cond = env->get("arg").to_bool();
|
||||||
@ -292,19 +358,9 @@ struct Environment
|
|||||||
}
|
}
|
||||||
return Value();
|
return Value();
|
||||||
}
|
}
|
||||||
}),
|
);
|
||||||
false);
|
initialize("assert", Value(std::move(f)), false);
|
||||||
|
|
||||||
initialize(
|
|
||||||
"size",
|
|
||||||
Value(Value::FunctionValue {
|
|
||||||
{ {"arg", true} },
|
|
||||||
[](std::shared_ptr<Environment> env) {
|
|
||||||
auto size = env->get("arg").size();
|
|
||||||
return Value(size);
|
|
||||||
}
|
}
|
||||||
}),
|
|
||||||
false);
|
|
||||||
}
|
}
|
||||||
|
|
||||||
private:
|
private:
|
||||||
|
@ -23,9 +23,10 @@ static auto g_grammar = R"(
|
|||||||
UNARY_NOT <- UNARY_NOT_OPERATOR? MULTIPLICATIVE
|
UNARY_NOT <- UNARY_NOT_OPERATOR? MULTIPLICATIVE
|
||||||
MULTIPLICATIVE <- CALL (MULTIPLICATIVE_OPERATOR CALL)*
|
MULTIPLICATIVE <- CALL (MULTIPLICATIVE_OPERATOR CALL)*
|
||||||
|
|
||||||
CALL <- PRIMARY (ARGUMENTS / INDEX)*
|
CALL <- PRIMARY (ARGUMENTS / INDEX / PROPERTY)*
|
||||||
ARGUMENTS <- '(' _ (EXPRESSION (',' _ EXPRESSION)*)? ')' _
|
ARGUMENTS <- '(' _ (EXPRESSION (',' _ EXPRESSION)*)? ')' _
|
||||||
INDEX <- '[' _ EXPRESSION ']' _
|
INDEX <- '[' _ EXPRESSION ']' _
|
||||||
|
PROPERTY <- '.' _ IDENTIFIER
|
||||||
|
|
||||||
PRIMARY <- WHILE / IF / FUNCTION / IDENTIFIER / ARRAY / NUMBER / BOOLEAN / STRING / INTERPOLATED_STRING / '(' _ EXPRESSION ')' _
|
PRIMARY <- WHILE / IF / FUNCTION / IDENTIFIER / ARRAY / NUMBER / BOOLEAN / STRING / INTERPOLATED_STRING / '(' _ EXPRESSION ')' _
|
||||||
|
|
||||||
@ -44,7 +45,7 @@ static auto g_grammar = R"(
|
|||||||
|
|
||||||
IDENTIFIER <- < [a-zA-Z_][a-zA-Z0-9_]* > _
|
IDENTIFIER <- < [a-zA-Z_][a-zA-Z0-9_]* > _
|
||||||
|
|
||||||
ARRAY <- '[' _ (EXPRESSION (',' _ EXPRESSION)*) ']' _
|
ARRAY <- '[' _ (EXPRESSION (',' _ EXPRESSION)*)? ']' _
|
||||||
NUMBER <- < [0-9]+ > _
|
NUMBER <- < [0-9]+ > _
|
||||||
BOOLEAN <- < ('true' / 'false') > _
|
BOOLEAN <- < ('true' / 'false') > _
|
||||||
STRING <- ['] < (!['] .)* > ['] _
|
STRING <- ['] < (!['] .)* > ['] _
|
||||||
@ -91,6 +92,7 @@ peg& get_parser()
|
|||||||
{ "CALL", Call, true },
|
{ "CALL", Call, true },
|
||||||
{ "ARGUMENTS", Arguments, false },
|
{ "ARGUMENTS", Arguments, false },
|
||||||
{ "INDEX", Index, false },
|
{ "INDEX", Index, false },
|
||||||
|
{ "PROPERTY", Property, false },
|
||||||
{ "LOGICAL_OR", LogicalOr, true },
|
{ "LOGICAL_OR", LogicalOr, true },
|
||||||
{ "LOGICAL_AND", LogicalAnd, true },
|
{ "LOGICAL_AND", LogicalAnd, true },
|
||||||
{ "CONDITION", Condition, true },
|
{ "CONDITION", Condition, true },
|
||||||
|
@ -4,7 +4,7 @@ enum AstTag
|
|||||||
{
|
{
|
||||||
Default = peglib::AstDefaultTag,
|
Default = peglib::AstDefaultTag,
|
||||||
Statements, While, If, Call, Assignment,
|
Statements, While, If, Call, Assignment,
|
||||||
Arguments, Index,
|
Arguments, Index, Property,
|
||||||
LogicalOr, LogicalAnd, Condition, UnaryPlus, UnaryMinus, UnaryNot, BinExpresion,
|
LogicalOr, LogicalAnd, Condition, UnaryPlus, UnaryMinus, UnaryNot, BinExpresion,
|
||||||
Identifier, InterpolatedString,
|
Identifier, InterpolatedString,
|
||||||
Number, Boolean, Function, Array
|
Number, Boolean, Function, Array
|
||||||
|
@ -32,6 +32,17 @@ test_sum = fn () {
|
|||||||
assert(ret == 55)
|
assert(ret == 55)
|
||||||
}
|
}
|
||||||
|
|
||||||
|
test_array = fn () {
|
||||||
|
a = [1,2,3]
|
||||||
|
assert(a.size() == 3)
|
||||||
|
|
||||||
|
a.push(4)
|
||||||
|
assert(a.size() == 4)
|
||||||
|
|
||||||
|
b = []
|
||||||
|
assert(b.size() == 0)
|
||||||
|
}
|
||||||
|
|
||||||
test_fib = fn () {
|
test_fib = fn () {
|
||||||
fib = fn (x) {
|
fib = fn (x) {
|
||||||
if x < 2 {
|
if x < 2 {
|
||||||
@ -48,5 +59,6 @@ test_fib = fn () {
|
|||||||
|
|
||||||
test_call()
|
test_call()
|
||||||
test_closure()
|
test_closure()
|
||||||
|
test_array()
|
||||||
test_sum()
|
test_sum()
|
||||||
test_fib()
|
test_fib()
|
||||||
|
Loading…
Reference in New Issue
Block a user