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Fix error messages for type-checking Lua reading functions

master
ShadowNinja 2015-05-06 15:33:36 -04:00
parent 3f5c2dea4d
commit 3a8e7341ec
1 changed files with 40 additions and 17 deletions
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57
src/script/common/c_converter.cpp
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@ -26,6 +26,19 @@ extern "C" {
#include "common/c_converter.h" #include "common/c_converter.h"
#include "constants.h" #include "constants.h"
#define CHECK_TYPE(index, name, type) do { \
int t = lua_type(L, (index)); \
if (t != (type)) { \
throw LuaError(std::string("Invalid ") + (name) + \
" (expected " + lua_typename(L, (type)) + \
" got " + lua_typename(L, t) + ")."); \
} \
} while(0)
#define CHECK_POS_COORD(name) CHECK_TYPE(-1, "position coordinate '" name "'", LUA_TNUMBER)
#define CHECK_POS_TAB(index) CHECK_TYPE(index, "position", LUA_TTABLE)
void push_v3f(lua_State *L, v3f p) void push_v3f(lua_State *L, v3f p)
{ {
lua_newtable(L); lua_newtable(L);
@ -49,7 +62,7 @@ void push_v2f(lua_State *L, v2f p)
v2s16 read_v2s16(lua_State *L, int index) v2s16 read_v2s16(lua_State *L, int index)
{ {
v2s16 p; v2s16 p;
luaL_checktype(L, index, LUA_TTABLE); CHECK_POS_TAB(index);
lua_getfield(L, index, "x"); lua_getfield(L, index, "x");
p.X = lua_tonumber(L, -1); p.X = lua_tonumber(L, -1);
lua_pop(L, 1); lua_pop(L, 1);
@ -62,12 +75,14 @@ v2s16 read_v2s16(lua_State *L, int index)
v2s16 check_v2s16(lua_State *L, int index) v2s16 check_v2s16(lua_State *L, int index)
{ {
v2s16 p; v2s16 p;
luaL_checktype(L, index, LUA_TTABLE); CHECK_POS_TAB(index);
lua_getfield(L, index, "x"); lua_getfield(L, index, "x");
p.X = luaL_checknumber(L, -1); CHECK_POS_COORD("x");
p.X = lua_tonumber(L, -1);
lua_pop(L, 1); lua_pop(L, 1);
lua_getfield(L, index, "y"); lua_getfield(L, index, "y");
p.Y = luaL_checknumber(L, -1); CHECK_POS_COORD("y");
p.Y = lua_tonumber(L, -1);
lua_pop(L, 1); lua_pop(L, 1);
return p; return p;
} }
@ -75,7 +90,7 @@ v2s16 check_v2s16(lua_State *L, int index)
v2s32 read_v2s32(lua_State *L, int index) v2s32 read_v2s32(lua_State *L, int index)
{ {
v2s32 p; v2s32 p;
luaL_checktype(L, index, LUA_TTABLE); CHECK_POS_TAB(index);
lua_getfield(L, index, "x"); lua_getfield(L, index, "x");
p.X = lua_tonumber(L, -1); p.X = lua_tonumber(L, -1);
lua_pop(L, 1); lua_pop(L, 1);
@ -88,7 +103,8 @@ v2s32 read_v2s32(lua_State *L, int index)
v2f read_v2f(lua_State *L, int index) v2f read_v2f(lua_State *L, int index)
{ {
v2f p; v2f p;
luaL_checktype(L, index, LUA_TTABLE); CHECK_POS_TAB(index);
lua_getfield(L, index, "x");
lua_getfield(L, index, "x"); lua_getfield(L, index, "x");
p.X = lua_tonumber(L, -1); p.X = lua_tonumber(L, -1);
lua_pop(L, 1); lua_pop(L, 1);
@ -101,12 +117,14 @@ v2f read_v2f(lua_State *L, int index)
v2f check_v2f(lua_State *L, int index) v2f check_v2f(lua_State *L, int index)
{ {
v2f p; v2f p;
luaL_checktype(L, index, LUA_TTABLE); CHECK_POS_TAB(index);
lua_getfield(L, index, "x"); lua_getfield(L, index, "x");
p.X = luaL_checknumber(L, -1); CHECK_POS_COORD("x");
p.X = lua_tonumber(L, -1);
lua_pop(L, 1); lua_pop(L, 1);
lua_getfield(L, index, "y"); lua_getfield(L, index, "y");
p.Y = luaL_checknumber(L, -1); CHECK_POS_COORD("y");
p.Y = lua_tonumber(L, -1);
lua_pop(L, 1); lua_pop(L, 1);
return p; return p;
} }
@ -114,7 +132,7 @@ v2f check_v2f(lua_State *L, int index)
v3f read_v3f(lua_State *L, int index) v3f read_v3f(lua_State *L, int index)
{ {
v3f pos; v3f pos;
luaL_checktype(L, index, LUA_TTABLE); CHECK_POS_TAB(index);
lua_getfield(L, index, "x"); lua_getfield(L, index, "x");
pos.X = lua_tonumber(L, -1); pos.X = lua_tonumber(L, -1);
lua_pop(L, 1); lua_pop(L, 1);
@ -130,15 +148,18 @@ v3f read_v3f(lua_State *L, int index)
v3f check_v3f(lua_State *L, int index) v3f check_v3f(lua_State *L, int index)
{ {
v3f pos; v3f pos;
luaL_checktype(L, index, LUA_TTABLE); CHECK_POS_TAB(index);
lua_getfield(L, index, "x"); lua_getfield(L, index, "x");
pos.X = luaL_checknumber(L, -1); CHECK_POS_COORD("x");
pos.X = lua_tonumber(L, -1);
lua_pop(L, 1); lua_pop(L, 1);
lua_getfield(L, index, "y"); lua_getfield(L, index, "y");
pos.Y = luaL_checknumber(L, -1); CHECK_POS_COORD("y");
pos.Z = lua_tonumber(L, -1);
lua_pop(L, 1); lua_pop(L, 1);
lua_getfield(L, index, "z"); lua_getfield(L, index, "z");
pos.Z = luaL_checknumber(L, -1); CHECK_POS_COORD("z");
pos.Z = lua_tonumber(L, -1);
lua_pop(L, 1); lua_pop(L, 1);
return pos; return pos;
} }
@ -182,7 +203,7 @@ v3s16 check_v3s16(lua_State *L, int index)
video::SColor readARGB8(lua_State *L, int index) video::SColor readARGB8(lua_State *L, int index)
{ {
video::SColor color(0); video::SColor color(0);
luaL_checktype(L, index, LUA_TTABLE); CHECK_TYPE(index, "ARGB color", LUA_TTABLE);
lua_getfield(L, index, "a"); lua_getfield(L, index, "a");
if(lua_isnumber(L, -1)) if(lua_isnumber(L, -1))
color.setAlpha(lua_tonumber(L, -1)); color.setAlpha(lua_tonumber(L, -1));
@ -378,9 +399,11 @@ std::string checkstringfield(lua_State *L, int table,
const char *fieldname) const char *fieldname)
{ {
lua_getfield(L, table, fieldname); lua_getfield(L, table, fieldname);
std::string s = luaL_checkstring(L, -1); CHECK_TYPE(-1, std::string("field \"") + fieldname + '"', LUA_TSTRING);
size_t len;
const char *s = lua_tolstring(L, -1, &len);
lua_pop(L, 1); lua_pop(L, 1);
return s; return std::string(s, len);
} }
std::string getstringfield_default(lua_State *L, int table, std::string getstringfield_default(lua_State *L, int table,