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no more "lua_pushliteral".

This commit is contained in:
Roberto Ierusalimschy 1996-02-12 15:32:09 -03:00
parent 73be918285
commit afaa98a666
2 changed files with 7 additions and 13 deletions
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7
lua.h
View File

@ -2,7 +2,7 @@
** LUA - Linguagem para Usuarios de Aplicacao ** LUA - Linguagem para Usuarios de Aplicacao
** Grupo de Tecnologia em Computacao Grafica ** Grupo de Tecnologia em Computacao Grafica
** TeCGraf - PUC-Rio ** TeCGraf - PUC-Rio
** $Id: lua.h,v 3.20 1995/10/31 16:41:53 roberto Exp roberto $ ** $Id: lua.h,v 3.21 1995/11/13 15:36:52 roberto Exp roberto $
*/ */
@ -60,7 +60,6 @@ void *lua_getuserdata (lua_Object object);
void lua_pushnil (void); void lua_pushnil (void);
void lua_pushnumber (float n); void lua_pushnumber (float n);
void lua_pushstring (char *s); void lua_pushstring (char *s);
void lua_pushliteral (char *s);
void lua_pushcfunction (lua_CFunction fn); void lua_pushcfunction (lua_CFunction fn);
void lua_pushusertag (void *u, int tag); void lua_pushusertag (void *u, int tag);
void lua_pushobject (lua_Object object); void lua_pushobject (lua_Object object);
@ -98,7 +97,9 @@ lua_Object lua_createtable (void);
#define lua_isuserdata(_) (lua_type(_)>=LUA_T_USERDATA) #define lua_isuserdata(_) (lua_type(_)>=LUA_T_USERDATA)
/* for lua 1.1 compatibility. Avoid using these macros */ /* for compatibility with old versions. Avoid using these macros */
#define lua_pushliteral(o) lua_pushstring(o)
#define lua_getindexed(o,n) (lua_pushobject(o), lua_pushnumber(n), lua_getsubscript()) #define lua_getindexed(o,n) (lua_pushobject(o), lua_pushnumber(n), lua_getsubscript())
#define lua_getfield(o,f) (lua_pushobject(o), lua_pushliteral(f), lua_getsubscript()) #define lua_getfield(o,f) (lua_pushobject(o), lua_pushliteral(f), lua_getsubscript())

13
manual.tex
View File

@ -1,4 +1,4 @@
% $Id: manual.tex,v 1.8 1996/02/09 17:21:27 roberto Exp roberto $ % $Id: manual.tex,v 1.9 1996/02/09 19:02:30 roberto Exp roberto $
\documentstyle[A4,11pt,bnf]{article} \documentstyle[A4,11pt,bnf]{article}
@ -32,7 +32,7 @@ Waldemar Celes Filho
Departamento de Inform\'atica --- PUC-Rio Departamento de Inform\'atica --- PUC-Rio
} }
\date{\small \verb$Date: 1996/02/09 17:21:27 $} \date{\small \verb$Date: 1996/02/09 19:02:30 $}
\maketitle \maketitle
@ -836,13 +836,12 @@ otherwise, the function returns 0 (the null pointer).
The reverse process, that is, passing a specific C value to Lua, The reverse process, that is, passing a specific C value to Lua,
is done by using the following functions: is done by using the following functions:
\Deffunc{lua_pushnumber}\Deffunc{lua_pushstring}\Deffunc{lua_pushliteral} \Deffunc{lua_pushnumber}\Deffunc{lua_pushstring}
\Deffunc{lua_pushcfunction}\Deffunc{lua_pushusertag} \Deffunc{lua_pushcfunction}\Deffunc{lua_pushusertag}
\Deffunc{lua_pushuserdata} \Deffunc{lua_pushuserdata}
\begin{verbatim} \begin{verbatim}
void lua_pushnumber (double n); void lua_pushnumber (double n);
void lua_pushstring (char *s); void lua_pushstring (char *s);
void lua_pushliteral (char *s);
void lua_pushcfunction (lua_CFunction f); void lua_pushcfunction (lua_CFunction f);
void lua_pushusertag (void *u, int tag); void lua_pushusertag (void *u, int tag);
\end{verbatim} \end{verbatim}
@ -855,12 +854,6 @@ convert it to a correspondent \verb'lua_Object',
and leave the result on the top of the Lua stack, and leave the result on the top of the Lua stack,
where it can be assigned to a Lua variable, where it can be assigned to a Lua variable,
passed as paramenter to a Lua function, etc (see below). \label{pushing} passed as paramenter to a Lua function, etc (see below). \label{pushing}
\verb'lua_pushliteral' is like \verb'lua_pushstring',
but also puts the string in the Lua literal table and merges duplications.
This avoids the string to be garbage collected,
and therefore has a better overall performance.
As a rule, when the string to be pushed is a literal,
\verb'lua_pushliteral' should be used.
User data can have different tags, User data can have different tags,
whose semantics are defined by the host program. whose semantics are defined by the host program.