245 lines
8.1 KiB
C++
245 lines
8.1 KiB
C++
/*
|
|
https://github.com/peterix/dfhack
|
|
Copyright (c) 2009-2012 Petr Mrázek (peterix@gmail.com)
|
|
|
|
This software is provided 'as-is', without any express or implied
|
|
warranty. In no event will the authors be held liable for any
|
|
damages arising from the use of this software.
|
|
|
|
Permission is granted to anyone to use this software for any
|
|
purpose, including commercial applications, and to alter it and
|
|
redistribute it freely, subject to the following restrictions:
|
|
|
|
1. The origin of this software must not be misrepresented; you must
|
|
not claim that you wrote the original software. If you use this
|
|
software in a product, an acknowledgment in the product documentation
|
|
would be appreciated but is not required.
|
|
|
|
2. Altered source versions must be plainly marked as such, and
|
|
must not be misrepresented as being the original software.
|
|
|
|
3. This notice may not be removed or altered from any source
|
|
distribution.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <string>
|
|
#include <sstream>
|
|
#include <vector>
|
|
#include <map>
|
|
|
|
#include "DataDefs.h"
|
|
#include "PluginManager.h"
|
|
|
|
#include <lua.h>
|
|
#include <lauxlib.h>
|
|
|
|
/**
|
|
* Internal header file of the lua wrapper.
|
|
*/
|
|
|
|
namespace DFHack { namespace LuaWrapper {
|
|
struct LuaToken;
|
|
|
|
/**
|
|
* Metatable pkey: type identity of the object
|
|
*/
|
|
extern LuaToken DFHACK_IDENTITY_FIELD_TOKEN;
|
|
|
|
/**
|
|
* Registry pkey: hash of type metatables <-> type identities.
|
|
*/
|
|
extern LuaToken DFHACK_TYPETABLE_TOKEN;
|
|
|
|
/**
|
|
* Registry pkey: hash of type identity -> node in df.etc...
|
|
*/
|
|
extern LuaToken DFHACK_TYPEID_TABLE_TOKEN;
|
|
|
|
/**
|
|
* Registry pkey: hash of enum/bitfield identity -> index lookup table
|
|
*/
|
|
extern LuaToken DFHACK_ENUM_TABLE_TOKEN;
|
|
|
|
/**
|
|
* Registry pkey: hash of pointer target identity <-> adhoc pointer identity userdata.
|
|
*/
|
|
extern LuaToken DFHACK_PTR_IDTABLE_TOKEN;
|
|
|
|
// Function registry names
|
|
#define DFHACK_CHANGEERROR_NAME "DFHack::ChangeError"
|
|
#define DFHACK_COMPARE_NAME "DFHack::ComparePtrs"
|
|
#define DFHACK_TYPE_TOSTRING_NAME "DFHack::TypeToString"
|
|
#define DFHACK_SIZEOF_NAME "DFHack::Sizeof"
|
|
#define DFHACK_DISPLACE_NAME "DFHack::Displace"
|
|
#define DFHACK_NEW_NAME "DFHack::New"
|
|
#define DFHACK_ASSIGN_NAME "DFHack::Assign"
|
|
#define DFHACK_IS_INSTANCE_NAME "DFHack::IsInstance"
|
|
#define DFHACK_DELETE_NAME "DFHack::Delete"
|
|
#define DFHACK_CAST_NAME "DFHack::Cast"
|
|
|
|
extern LuaToken DFHACK_EMPTY_TABLE_TOKEN;
|
|
|
|
/*
|
|
* Upvalue: contents of DFHACK_TYPETABLE_NAME
|
|
*/
|
|
#define UPVAL_TYPETABLE lua_upvalueindex(1)
|
|
|
|
/*
|
|
* Expected metatable of the current object.
|
|
*/
|
|
#define UPVAL_METATABLE lua_upvalueindex(2)
|
|
|
|
/*
|
|
* Table mapping field names to indices or data structure pointers.
|
|
* Enum index table is linked into here via getmetatable($).__index.
|
|
* Fields that are actually in UPVAL_METATABLE are marked with NULL light udata.
|
|
*/
|
|
#define UPVAL_FIELDTABLE lua_upvalueindex(3)
|
|
#define UPVAL_METHOD_NAME lua_upvalueindex(3)
|
|
|
|
/*
|
|
* Only for containers: light udata with container identity.
|
|
*/
|
|
#define UPVAL_CONTAINER_ID lua_upvalueindex(4)
|
|
|
|
/*
|
|
* Only for containers: light udata with item identity.
|
|
*/
|
|
#define UPVAL_ITEM_ID lua_upvalueindex(5)
|
|
|
|
/*
|
|
* Only for containers: if not nil, overrides the item count.
|
|
*/
|
|
#define UPVAL_ITEM_COUNT lua_upvalueindex(6)
|
|
|
|
inline void lua_dup(lua_State *state) { lua_pushvalue(state, -1); }
|
|
inline void lua_swap(lua_State *state) { lua_insert(state, -2); }
|
|
|
|
/**
|
|
* Object references are represented as userdata instances
|
|
* with an appropriate metatable; the payload of userdata is
|
|
* this structure:
|
|
*/
|
|
struct DFRefHeader {
|
|
void *ptr;
|
|
};
|
|
|
|
/**
|
|
* Push the pointer as DF object ref using metatable on the stack.
|
|
*/
|
|
void push_object_ref(lua_State *state, void *ptr);
|
|
void *get_object_ref(lua_State *state, int val_index);
|
|
|
|
/*
|
|
* The system might be extended to carry some simple
|
|
* objects inline inside the reference buffer.
|
|
*/
|
|
inline bool is_self_contained(DFRefHeader *ptr) {
|
|
void **pp = &ptr->ptr;
|
|
return **(void****)pp == (pp + 1);
|
|
}
|
|
|
|
/**
|
|
* Report an error while accessing a field (index = field name).
|
|
*/
|
|
void field_error(lua_State *state, int index, const char *err, const char *mode);
|
|
|
|
/*
|
|
* If is_method is true, these use UPVAL_TYPETABLE to save a hash lookup.
|
|
*/
|
|
void push_object_internal(lua_State *state, type_identity *type, void *ptr, bool in_method = true);
|
|
void *get_object_internal(lua_State *state, type_identity *type, int val_index, bool exact_type, bool in_method = true);
|
|
|
|
void push_adhoc_pointer(lua_State *state, void *ptr, type_identity *target);
|
|
|
|
/**
|
|
* Verify that the object is a DF ref with UPVAL_METATABLE.
|
|
* If everything ok, extract the address.
|
|
*/
|
|
DFHACK_EXPORT uint8_t *get_object_addr(lua_State *state, int obj, int field, const char *mode);
|
|
|
|
bool is_type_compatible(lua_State *state, type_identity *type1, int meta1,
|
|
type_identity *type2, int meta2, bool exact_equal);
|
|
|
|
type_identity *get_object_identity(lua_State *state, int objidx,
|
|
const char *ctx, bool allow_type = false,
|
|
bool keep_metatable = false);
|
|
|
|
void LookupInTable(lua_State *state, void *id, LuaToken *tname);
|
|
void SaveInTable(lua_State *state, void *node, LuaToken *tname);
|
|
void SaveTypeInfo(lua_State *state, void *node);
|
|
|
|
void AssociateId(lua_State *state, int table, int val, const char *name);
|
|
|
|
/**
|
|
* Look up the key on the stack in DFHACK_TYPETABLE;
|
|
* if found, put result on the stack and return true.
|
|
*/
|
|
bool LookupTypeInfo(lua_State *state, bool in_method);
|
|
|
|
/**
|
|
* Make a metatable with most common fields, and an empty table for UPVAL_FIELDTABLE.
|
|
*/
|
|
void MakeMetatable(lua_State *state, type_identity *type, const char *kind);
|
|
/**
|
|
* Enable a metafield by injecting an entry into a UPVAL_FIELDTABLE.
|
|
*/
|
|
void EnableMetaField(lua_State *state, int ftable_idx, const char *name, void *id = NULL);
|
|
/**
|
|
* Set metatable properties common to all actual DF object references.
|
|
*/
|
|
void SetPtrMethods(lua_State *state, int meta_idx, int read_idx);
|
|
/**
|
|
* Add a __pairs/__ipairs metamethod using iterator on the top of stack.
|
|
*/
|
|
void SetPairsMethod(lua_State *state, int meta_idx, const char *name);
|
|
/**
|
|
* Add a struct-style (3 upvalues) metamethod to the stack.
|
|
*/
|
|
void PushStructMethod(lua_State *state, int meta_idx, int ftable_idx,
|
|
lua_CFunction function);
|
|
/**
|
|
* Add a struct-style (3 upvalues) metamethod to the metatable.
|
|
*/
|
|
void SetStructMethod(lua_State *state, int meta_idx, int ftable_idx,
|
|
lua_CFunction function, const char *name);
|
|
/**
|
|
* Add a 6 upvalue metamethod to the stack.
|
|
*/
|
|
void PushContainerMethod(lua_State *state, int meta_idx, int ftable_idx,
|
|
lua_CFunction function,
|
|
type_identity *container, type_identity *item, int count);
|
|
/**
|
|
* Add a 6 upvalue metamethod to the metatable.
|
|
*/
|
|
void SetContainerMethod(lua_State *state, int meta_idx, int ftable_idx,
|
|
lua_CFunction function, const char *name,
|
|
type_identity *container, type_identity *item, int count);
|
|
/**
|
|
* If ienum refers to a valid enum, attach its keys to UPVAL_FIELDTABLE,
|
|
* and the enum itself to the _enum metafield. Pushes the key table on the stack.
|
|
*/
|
|
void AttachEnumKeys(lua_State *state, int meta_idx, int ftable_idx, type_identity *ienum);
|
|
|
|
/**
|
|
* Push a closure invoking the given function.
|
|
*/
|
|
void PushFunctionWrapper(lua_State *state, int meta_idx,
|
|
const char *name, function_identity_base *fun);
|
|
|
|
/**
|
|
* Wrap functions and add them to the table on the top of the stack.
|
|
*/
|
|
using DFHack::FunctionReg;
|
|
void SetFunctionWrappers(lua_State *state, const FunctionReg *reg);
|
|
|
|
int method_wrapper_core(lua_State *state, function_identity_base *id);
|
|
|
|
void IndexStatics(lua_State *state, int meta_idx, int ftable_idx, struct_identity *pstruct);
|
|
|
|
void AttachDFGlobals(lua_State *state);
|
|
}}
|
|
|