mirror of
https://github.com/pocketpy/pocketpy
synced 2025-10-20 11:30:18 +00:00
116 lines
3.9 KiB
C
116 lines
3.9 KiB
C
#ifndef POCKETPY_C_H
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#define POCKETPY_C_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdbool.h>
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#include <stdint.h>
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typedef struct pkpy_vm_handle pkpy_vm;
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//we we take a lot of inspiration from the lua api for these bindings
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//the key difference being most methods return a bool,
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//true if it succeeded false if it did not
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//if a method returns false call the pkpy_clear_error method to check the error and clear it
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//if pkpy_clear_error returns false it means that no error was set, and it takes no action
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//if pkpy_clear_error returns true it means there was an error and it was cleared,
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//it will provide a string summary of the error in the message parameter (if it is not NULL)
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//if null is passed in as message, and it will just print the message to stderr
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bool pkpy_clear_error(pkpy_vm*, char** message);
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//NOTE you are responsible for freeing message
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//this will cause the vm to enter an error state and report the given message
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//when queried
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//note that at the moment this is more like a panic than throwing an error
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//the user will not be able to catch it with python code
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bool pkpy_error(pkpy_vm*, const char* message);
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pkpy_vm* pkpy_vm_create(bool use_stdio, bool enable_os);
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bool pkpy_vm_run(pkpy_vm*, const char* source);
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void pkpy_vm_destroy(pkpy_vm*);
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typedef int (*pkpy_function)(pkpy_vm*);
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bool pkpy_pop(pkpy_vm*, int n);
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//push the item at index onto the top of the stack (as well as leaving it where
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//it is on the stack)
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bool pkpy_push(pkpy_vm*, int index);
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bool pkpy_push_function(pkpy_vm*, pkpy_function);
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bool pkpy_push_int(pkpy_vm*, int);
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bool pkpy_push_float(pkpy_vm*, double);
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bool pkpy_push_bool(pkpy_vm*, bool);
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bool pkpy_push_string(pkpy_vm*, const char*);
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bool pkpy_push_stringn(pkpy_vm*, const char*, int length);
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bool pkpy_push_voidp(pkpy_vm*, void*);
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bool pkpy_push_none(pkpy_vm*);
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bool pkpy_set_global(pkpy_vm*, const char* name);
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bool pkpy_get_global(pkpy_vm*, const char* name);
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//first push callable you want to call
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//then push the arguments to send
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//argc is the number of arguments that was pushed (not counting the callable)
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bool pkpy_call(pkpy_vm*, int argc);
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//first push the object the method belongs to (self)
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//then push the the argments
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//argc is the number of arguments that was pushed (not counting the callable or self)
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//name is the name of the method to call on the object
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bool pkpy_call_method(pkpy_vm*, const char* name, int argc);
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//we will break with the lua api here
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//lua uses 1 as the index to the first pushed element for all of these functions
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//but we will start counting at zero to match python
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//we will allow negative numbers to count backwards from the top
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bool pkpy_to_int(pkpy_vm*, int index, int* ret);
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bool pkpy_to_float(pkpy_vm*, int index, double* ret);
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bool pkpy_to_bool(pkpy_vm*, int index, bool* ret);
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bool pkpy_to_voidp(pkpy_vm*, int index, void** ret);
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//this method provides a strong reference, you are responsible for freeing the
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//string when you are done with it
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bool pkpy_to_string(pkpy_vm*, int index, char** ret);
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//this method provides a weak reference, it is only valid until the
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//next api call
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//it is not null terminated
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bool pkpy_to_stringn(pkpy_vm*, int index, const char** ret, int* size);
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//these do not follow the same error semantics as above, their return values
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//just say whether the check succeeded or not, or else return the value asked for
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bool pkpy_is_int(pkpy_vm*, int index);
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bool pkpy_is_float(pkpy_vm*, int index);
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bool pkpy_is_bool(pkpy_vm*, int index);
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bool pkpy_is_string(pkpy_vm*, int index);
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bool pkpy_is_voidp(pkpy_vm*, int index);
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bool pkpy_is_none(pkpy_vm*, int index);
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//will return true if global exists
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bool pkpy_check_global(pkpy_vm*, const char* name);
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//will return true if the vm is currently in an error state
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bool pkpy_check_error(pkpy_vm*);
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//will return true if at least free empty slots remain on the stack
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bool pkpy_check_stack(pkpy_vm*, int free);
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//returns the number of elements on the stack
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int pkpy_stack_size(pkpy_vm*);
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#ifdef __cplusplus
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}
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#endif
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#endif
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