This commit is contained in:
blueloveTH 2023-05-07 20:50:51 +08:00
parent bed6325890
commit 9fb35f69ba
14 changed files with 232 additions and 19 deletions

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---
title: General
icon: dot
order: 7
---
#### `void pkpy_delete(void* p)`
Delete a pointer allocated by `pkpy_xxx_xxx`.
It can be `VM*`, `REPL*`, `char*`, etc.
!!!
If the pointer is not allocated by `pkpy_xxx_xxx`, the behavior is undefined.
!!!

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label: C-API label: Legacy C-API
icon: code icon: code
order: 1 order: 1

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icon: dot icon: dot
order: 10 order: 10
--- ---
!!!
Lua Style C-API cannot be mixed with Legacy C-API.
!!!
#### `VM* pkpy_new_vm()` #### `VM* pkpy_new_vm()`
Create a virtual machine. Create a virtual machine.
@ -28,3 +33,12 @@ Get a global variable of a virtual machine.
Return `__repr__` of the result. Return `__repr__` of the result.
If the variable is not found, return `nullptr`. If the variable is not found, return `nullptr`.
#### `void pkpy_delete(void* p)`
Delete a pointer allocated by `pkpy_xxx_xxx`.
It can be `VM*`, `REPL*`, `char*`, etc.
!!!
If the pointer is not allocated by `pkpy_xxx_xxx`, the behavior is undefined.
!!!

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docs/LuaC-API/call.md Normal file
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---
title: Callables
icon: dot
order: 6
---
#### `bool pkpy_call(pkpy_vm*, int argc)`
First push callable you want to call, then push the arguments to send.
+ `argc` is the number of arguments that was pushed (not counting the callable).
#### `bool pkpy_call_method(pkpy_vm*, const char* name, int argc)`
First push the object the method belongs to (self), then push the the argments.
+ `argc` is the number of arguments that was pushed (not counting the callable or self)
+ `name` is the name of the method to call on the object

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docs/LuaC-API/error.md Normal file
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---
title: Error Handling
icon: dot
order: 5
---
#### `bool pkpy_clear_error(pkpy_vm*, char** message)`
+ If a method returns false, call the `pkpy_clear_error` method to check the error and clear it
+ If `pkpy_clear_error` returns false, it means that no error was set, and it takes no action
+ If `pkpy_clear_error` returns true, it means there was an error and it was cleared. It will provide a string summary of the error in the message parameter (if it is not NULL) If null is passed in as message, and it will just print the message to stderr.
+ You are responsible for freeing `message`.
#### `bool pkpy_check_error(pkpy_vm*)`
Return true if the vm is currently in an error state.

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label: Lua Style C-API
icon: code
order: 2

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---
title: Introduction
icon: dot
order: 10
---
We take a lot of inspiration from the lua api for these bindings.
The key difference being most methods return a bool,
true if it succeeded false if it did not.
!!!
Special thanks for [@koltenpearson](https://github.com/koltenpearson) for bringing us the Lua Style API implementation.
!!!
## Basic Functions
#### `pkpy_vm* pkpy_vm_create(bool use_stdio, bool enable_os)`
Creates a new Lua Style VM.
+ `use_stdio`: if true, the VM will use stdout and stderr
+ `enable_os`: if true, the VM will have access to the os library
#### `bool pkpy_vm_run(pkpy_vm*, const char* source)`
Runs the given source code in the VM.
+ `source`: the source code to run
#### `void pkpy_vm_destroy(pkpy_vm*)`
Destroys the VM.

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---
title: Stack Manipulation
icon: dot
order: 8
---
!!!
Stack index is 0-based instead of 1-based.
!!!
## Push and Pop
#### `bool pkpy_pop(pkpy_vm*, int n)`
Pop `n` items from the stack.
#### `bool pkpy_push_function(pkpy_vm*, pkpy_function)`
Push a function onto the stack. The function is of `typedef int (*pkpy_function)(pkpy_vm*);`
#### `bool pkpy_push_int(pkpy_vm*, int)`
Push an integer onto the stack.
#### `bool pkpy_push_float(pkpy_vm*, double)`
Push a float onto the stack.
#### `bool pkpy_push_bool(pkpy_vm*, bool)`
Push a boolean onto the stack.
#### `bool pkpy_push_string(pkpy_vm*, const char*)`
Push a string onto the stack.
#### `bool pkpy_push_stringn(pkpy_vm*, const char*, int length)`
Push a string onto the stack.
+ `length`: the length of the string
#### `bool pkpy_push_voidp(pkpy_vm*, void*)`
Push a void pointer onto the stack.
#### `bool pkpy_push_none(pkpy_vm*)`
Push `None` onto the stack.
## Size Queries
#### `bool pkpy_check_stack(pkpy_vm*, int free)`
Return true if at least `free` empty slots remain on the stack.
#### `int pkpy_stack_size(pkpy_vm*)`
Return the number of elements on the stack.
## Conversion
#### `bool pkpy_to_int(pkpy_vm*, int index, int* ret)`
Convert the value at the given index to an integer.
#### `bool pkpy_to_float(pkpy_vm*, int index, double* ret)`
Convert the value at the given index to a float.
#### `bool pkpy_to_bool(pkpy_vm*, int index, bool* ret)`
Convert the value at the given index to a boolean.
#### `bool pkpy_to_voidp(pkpy_vm*, int index, void** ret)`
Convert the value at the given index to a void pointer.
#### `bool pkpy_to_string(pkpy_vm*, int index, char** ret)`
Convert the value at the given index to a string (strong reference).
+ `ret` is null terminated.
+ You are responsible for freeing the string when you are done with it.
#### `bool pkpy_to_stringn(pkpy_vm*, int index, const char** ret, int* size)`
Convert the value at the given index to a string (weak reference).
+ `ret` is not null terminated.
+ `size` is the length of the string.
+ The string is only valid until the next API call.

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docs/LuaC-API/types.md Normal file
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---
title: Type Checking
icon: dot
order: 7
---
#### `bool pkpy_is_int(pkpy_vm*, int index)`
Return true if the value at the given index is an integer.
#### `bool pkpy_is_float(pkpy_vm*, int index)`
Return true if the value at the given index is a float.
#### `bool pkpy_is_bool(pkpy_vm*, int index)`
Return true if the value at the given index is a boolean.
#### `bool pkpy_is_string(pkpy_vm*, int index)`
Return true if the value at the given index is a string.
#### `bool pkpy_is_voidp(pkpy_vm*, int index)`
Return true if the value at the given index is a void pointer.
#### `bool pkpy_is_none(pkpy_vm*, int index)`
Return true if the value at the given index is `None`.

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---
title: Variables
icon: dot
order: 6
---
#### `bool pkpy_check_global(pkpy_vm*, const char* name)`
Return true if the global variable exists.
#### `bool pkpy_set_global(pkpy_vm*, const char* name)`
Set the global variable to the value at the top of the stack.
#### `bool pkpy_get_global(pkpy_vm*, const char* name)`
Get the global variable and push it to the top of the stack.

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--- ---
icon: book icon: book
order: 2 order: 0
label: Coding style guide label: Coding style guide
--- ---

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--- ---
icon: book icon: book
order: 2 order: 0
label: Developer guide label: Developer guide
--- ---

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--- ---
icon: verified icon: verified
order: 0 order: -10
label: License label: License
--- ---

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--- ---
icon: zap icon: zap
order: 1 order: -1
label: Performance label: Performance
--- ---