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* Add examples folder * Draft change * Add draft changes * Add examples * Refactor examples --------- Co-authored-by: Mahbub Alam <alam.mahbub214@gmail.com>
109 lines
4.2 KiB
C++
109 lines
4.2 KiB
C++
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/**
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* This example illustrate use of Dict in PocketPy.
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* It creates a python module named "employee" and bind four functions to it.
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* It exercises setting and getting elements in a Dict.
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*/
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#include "pocketpy.h"
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using namespace pkpy;
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int main(){
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// Create a virtual machine
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VM* vm = new VM();
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// Create "employee" module
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PyObject* employee_module = vm->new_module("employee");
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// Bind a function named "get_first_name" to the module
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vm->bind(employee_module, "get_first_name(employee: Dict) -> str",
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"Returns first_name of the employee", // docstring
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[](VM* vm, ArgsView args){
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// Cast the argument to a dictionary
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Dict& employee = CAST(Dict&, args[0]);
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// Access the first_name field and return it
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return employee.try_get(VAR("first_name"));
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});
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// Bind a function named "get_last_name" to the module
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vm->bind(employee_module, "get_last_name(employee: Dict) -> str",
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"Returns last_name of the employee", // docstring
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[](VM* vm, ArgsView args){
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// Cast the argument to a dictionary
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Dict& employee = CAST(Dict&, args[0]);
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// Access the last_name field and return it
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return employee.try_get(VAR("last_name"));
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});
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// Bind a function named "get_salary" to the module
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// It accepts a dictionary as argument and returns a float
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vm->bind(employee_module, "get_salary(employee: Dict) -> float",
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"Returns salary of the employee", // docstring
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[](VM* vm, ArgsView args){
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// Cast the argument to a dictionary
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Dict& employee = CAST(Dict&, args[0]);
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// Access the salary field and return it
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return employee.try_get(VAR("salary"));
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});
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// Bind a function named "love_coding" to the module
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// It accepts a dictionary as argument and returns a bool
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vm->bind(employee_module, "love_coding(employee: Dict) -> bool",
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"Returns Yes if the employee loves coding, No otherwise", // docstring
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[](VM* vm, ArgsView args){
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// Cast the argument to a dictionary
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Dict& employee = CAST(Dict&, args[0]);
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// Access the hobbies field and cast it to a list
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List& hobbies = CAST(List&, employee.try_get(VAR("hobbies")));
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// Iterate through the list and check if the employee loves coding
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for(auto& e : hobbies){
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if(CAST(Str&, e) == Str("Coding")){
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return VAR("Yes");
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}
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}
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return VAR("No");
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});
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// Create employee dictionary covert it to a python object
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Dict employee(vm);
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employee.set(VAR("first_name"), VAR("John"));
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employee.set(VAR("last_name"), VAR("Doe"));
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employee.set(VAR("age"), VAR(30));
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employee.set(VAR("salary"), VAR(10000.0));
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List hobbies;
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hobbies.push_back(VAR("Reading"));
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hobbies.push_back(VAR("Walking"));
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hobbies.push_back(VAR("Coding"));
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employee.set(VAR("hobbies"), VAR(std::move(hobbies)));
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PyObject* employee_obj = VAR(std::move(employee));
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// Call the "get_first_name" function
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PyObject* f_get_first_name = employee_module->attr("get_first_name");
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PyObject* first_name = vm->call(f_get_first_name, employee_obj);
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std::cout << "First name: " << CAST(Str&, first_name) << std::endl; // First name: John
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// Call the "get_last_name" function
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PyObject* f_get_last_name = employee_module->attr("get_last_name");
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PyObject* last_name = vm->call(f_get_last_name, employee_obj);
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std::cout << "Last name: " << CAST(Str&, last_name) << std::endl; // Last name: Doe
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// Call the "get_salary" function
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PyObject* f_get_salary = employee_module->attr("get_salary");
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PyObject* salary = vm->call(f_get_salary, employee_obj);
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std::cout << "Salary: "<< CAST(double, salary) << std::endl; // Salary: 10000
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// Call the "love_coding" function
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PyObject* f_love_coding = employee_module->attr("love_coding");
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PyObject* love_coding = vm->call(f_love_coding, employee_obj);
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std::cout << "Loves coding: " << CAST(Str&, love_coding) << std::endl; // Loves coding: Yes
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// Dispose the virtual machine
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delete vm;
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return 0;
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}
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