312 lines
12 KiB
C++
312 lines
12 KiB
C++
#include "jinja-lexer.h"
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#include "jinja-vm.h"
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#include "jinja-parser.h"
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#include "jinja-value.h"
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#include <string>
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#include <cctype>
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namespace jinja {
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const func_builtins & value_int_t::get_builtins() const {
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static const func_builtins builtins = {
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{"abs", [](const func_args & args) -> value {
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args.ensure_vals<value_int>();
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int64_t val = args.args[0]->as_int();
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return mk_val<value_int>(val < 0 ? -val : val);
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}},
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{"float", [](const func_args & args) -> value {
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args.ensure_vals<value_int>();
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double val = static_cast<double>(args.args[0]->as_int());
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return mk_val<value_float>(val);
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}},
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};
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return builtins;
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}
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const func_builtins & value_float_t::get_builtins() const {
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static const func_builtins builtins = {
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{"abs", [](const func_args & args) -> value {
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args.ensure_vals<value_float>();
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double val = args.args[0]->as_float();
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return mk_val<value_float>(val < 0.0 ? -val : val);
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}},
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{"int", [](const func_args & args) -> value {
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args.ensure_vals<value_float>();
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int64_t val = static_cast<int64_t>(args.args[0]->as_float());
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return mk_val<value_int>(val);
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}},
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};
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return builtins;
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}
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static std::string string_strip(const std::string & str, bool left, bool right) {
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size_t start = 0;
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size_t end = str.length();
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if (left) {
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while (start < end && isspace(static_cast<unsigned char>(str[start]))) {
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++start;
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}
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}
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if (right) {
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while (end > start && isspace(static_cast<unsigned char>(str[end - 1]))) {
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--end;
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}
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}
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return str.substr(start, end - start);
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}
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static bool string_startswith(const std::string & str, const std::string & prefix) {
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if (str.length() < prefix.length()) return false;
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return str.compare(0, prefix.length(), prefix) == 0;
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}
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static bool string_endswith(const std::string & str, const std::string & suffix) {
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if (str.length() < suffix.length()) return false;
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return str.compare(str.length() - suffix.length(), suffix.length(), suffix) == 0;
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}
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const func_builtins & value_string_t::get_builtins() const {
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static const func_builtins builtins = {
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{"upper", [](const func_args & args) -> value {
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args.ensure_vals<value_string>();
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std::string str = args.args[0]->as_string();
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std::transform(str.begin(), str.end(), str.begin(), ::toupper);
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return mk_val<value_string>(str);
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}},
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{"lower", [](const func_args & args) -> value {
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args.ensure_vals<value_string>();
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std::string str = args.args[0]->as_string();
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std::transform(str.begin(), str.end(), str.begin(), ::tolower);
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return mk_val<value_string>(str);
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}},
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{"strip", [](const func_args & args) -> value {
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args.ensure_vals<value_string>();
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std::string str = args.args[0]->as_string();
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return mk_val<value_string>(string_strip(str, true, true));
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}},
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{"rstrip", [](const func_args & args) -> value {
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args.ensure_vals<value_string>();
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std::string str = args.args[0]->as_string();
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return mk_val<value_string>(string_strip(str, false, true));
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}},
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{"lstrip", [](const func_args & args) -> value {
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args.ensure_vals<value_string>();
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std::string str = args.args[0]->as_string();
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return mk_val<value_string>(string_strip(str, true, false));
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}},
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{"title", [](const func_args & args) -> value {
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args.ensure_vals<value_string>();
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std::string str = args.args[0]->as_string();
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bool capitalize_next = true;
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for (char &c : str) {
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if (isspace(static_cast<unsigned char>(c))) {
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capitalize_next = true;
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} else if (capitalize_next) {
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c = ::toupper(static_cast<unsigned char>(c));
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capitalize_next = false;
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} else {
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c = ::tolower(static_cast<unsigned char>(c));
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}
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}
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return mk_val<value_string>(str);
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}},
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{"capitalize", [](const func_args & args) -> value {
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args.ensure_vals<value_string>();
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std::string str = args.args[0]->as_string();
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if (!str.empty()) {
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str[0] = ::toupper(static_cast<unsigned char>(str[0]));
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std::transform(str.begin() + 1, str.end(), str.begin() + 1, ::tolower);
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}
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return mk_val<value_string>(str);
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}},
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{"length", [](const func_args & args) -> value {
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args.ensure_vals<value_string>();
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std::string str = args.args[0]->as_string();
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return mk_val<value_int>(str.length());
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}},
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{"startswith", [](const func_args & args) -> value {
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args.ensure_vals<value_string, value_string>();
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std::string str = args.args[0]->as_string();
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std::string prefix = args.args[1]->as_string();
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return mk_val<value_bool>(string_startswith(str, prefix));
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}},
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{"endswith", [](const func_args & args) -> value {
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args.ensure_vals<value_string, value_string>();
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std::string str = args.args[0]->as_string();
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std::string suffix = args.args[1]->as_string();
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return mk_val<value_bool>(string_endswith(str, suffix));
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}},
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{"split", [](const func_args & args) -> value {
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args.ensure_vals<value_string>();
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std::string str = args.args[0]->as_string();
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std::string delim = (args.args.size() > 1) ? args.args[1]->as_string() : " ";
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auto result = mk_val<value_array>();
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size_t pos = 0;
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std::string token;
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while ((pos = str.find(delim)) != std::string::npos) {
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token = str.substr(0, pos);
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result->val_arr->push_back(mk_val<value_string>(token));
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str.erase(0, pos + delim.length());
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}
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result->val_arr->push_back(mk_val<value_string>(str));
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return std::move(result);
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}},
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{"replace", [](const func_args & args) -> value {
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args.ensure_vals<value_string, value_string, value_string>();
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std::string str = args.args[0]->as_string();
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std::string old_str = args.args[1]->as_string();
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std::string new_str = args.args[2]->as_string();
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size_t pos = 0;
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while ((pos = str.find(old_str, pos)) != std::string::npos) {
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str.replace(pos, old_str.length(), new_str);
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pos += new_str.length();
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}
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return mk_val<value_string>(str);
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}},
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{"int", [](const func_args & args) -> value {
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args.ensure_vals<value_string>();
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std::string str = args.args[0]->as_string();
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try {
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return mk_val<value_int>(std::stoi(str));
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} catch (...) {
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throw std::runtime_error("Cannot convert string '" + str + "' to int");
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}
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}},
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{"float", [](const func_args & args) -> value {
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args.ensure_vals<value_string>();
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std::string str = args.args[0]->as_string();
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try {
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return mk_val<value_float>(std::stod(str));
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} catch (...) {
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throw std::runtime_error("Cannot convert string '" + str + "' to float");
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}
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}},
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{"string", [](const func_args & args) -> value {
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// no-op
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args.ensure_vals<value_string>();
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return mk_val<value_string>(args.args[0]->as_string());
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}},
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{"indent", [](const func_args & args) -> value {
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throw std::runtime_error("indent builtin not implemented");
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}},
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{"join", [](const func_args & args) -> value {
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throw std::runtime_error("join builtin not implemented");
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}},
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};
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return builtins;
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};
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const func_builtins & value_bool_t::get_builtins() const {
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static const func_builtins builtins = {
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{"int", [](const func_args & args) -> value {
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args.ensure_vals<value_bool>();
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bool val = args.args[0]->as_bool();
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return mk_val<value_int>(val ? 1 : 0);
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}},
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{"float", [](const func_args & args) -> value {
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args.ensure_vals<value_bool>();
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bool val = args.args[0]->as_bool();
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return mk_val<value_float>(val ? 1.0 : 0.0);
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}},
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{"string", [](const func_args & args) -> value {
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args.ensure_vals<value_bool>();
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bool val = args.args[0]->as_bool();
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return mk_val<value_string>(val ? "True" : "False");
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}},
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};
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return builtins;
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}
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const func_builtins & value_array_t::get_builtins() const {
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static const func_builtins builtins = {
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{"list", [](const func_args & args) -> value {
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args.ensure_vals<value_array>();
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const auto & arr = args.args[0]->as_array();
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auto result = mk_val<value_array>();
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for (const auto& v : arr) {
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result->val_arr->push_back(v->clone());
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}
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return result;
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}},
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{"first", [](const func_args & args) -> value {
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args.ensure_vals<value_array>();
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const auto & arr = args.args[0]->as_array();
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if (arr.empty()) {
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return mk_val<value_undefined>();
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}
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return arr[0]->clone();
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}},
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{"last", [](const func_args & args) -> value {
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args.ensure_vals<value_array>();
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const auto & arr = args.args[0]->as_array();
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if (arr.empty()) {
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return mk_val<value_undefined>();
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}
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return arr[arr.size() - 1]->clone();
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}},
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{"length", [](const func_args & args) -> value {
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args.ensure_vals<value_array>();
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const auto & arr = args.args[0]->as_array();
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return mk_val<value_int>(static_cast<int64_t>(arr.size()));
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}},
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// TODO: reverse, sort, join, string, unique
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};
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return builtins;
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}
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const func_builtins & value_object_t::get_builtins() const {
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static const func_builtins builtins = {
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{"get", [](const func_args & args) -> value {
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args.ensure_vals<value_object, value_string>(); // TODO: add default value
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const auto & obj = args.args[0]->as_object();
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std::string key = args.args[1]->as_string();
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auto it = obj.find(key);
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if (it != obj.end()) {
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return it->second->clone();
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} else {
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return mk_val<value_undefined>();
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}
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}},
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{"keys", [](const func_args & args) -> value {
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args.ensure_vals<value_object>();
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const auto & obj = args.args[0]->as_object();
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auto result = mk_val<value_array>();
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for (const auto & pair : obj) {
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result->val_arr->push_back(mk_val<value_string>(pair.first));
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}
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return result;
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}},
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{"values", [](const func_args & args) -> value {
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args.ensure_vals<value_object>();
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const auto & obj = args.args[0]->as_object();
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auto result = mk_val<value_array>();
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for (const auto & pair : obj) {
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result->val_arr->push_back(pair.second->clone());
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}
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return result;
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}},
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{"items", [](const func_args & args) -> value {
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args.ensure_vals<value_object>();
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const auto & obj = args.args[0]->as_object();
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auto result = mk_val<value_array>();
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for (const auto & pair : obj) {
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auto item = mk_val<value_array>();
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item->val_arr->push_back(mk_val<value_string>(pair.first));
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item->val_arr->push_back(pair.second->clone());
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result->val_arr->push_back(std::move(item));
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}
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return result;
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}},
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};
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return builtins;
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}
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} // namespace jinja
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