commit 8bc4b0d741f73109e761e73a7932f8fe47b242d5
parent 96b2b90c503beca92122890ffba091d88ea26737
Author: Waldemar Celes <celes@tecgraf.puc-rio.br>
Date: Tue, 27 Dec 1994 18:04:10 -0200
routines are defined before rules, to allow correct compilation with bison
Diffstat:
| M | lua.stx | | | 369 | +++++++++++++++++++++++++++++++++++++++---------------------------------------- |
1 file changed, 184 insertions(+), 185 deletions(-)
diff --git a/lua.stx b/lua.stx
@@ -1,6 +1,6 @@
%{
-char *rcs_luastx = "$Id: lua.stx,v 3.13 1994/12/06 14:27:18 roberto Exp roberto $";
+char *rcs_luastx = "$Id: lua.stx,v 3.14 1994/12/20 21:20:36 roberto Exp celes $";
#include <stdio.h>
#include <stdlib.h>
@@ -177,6 +177,189 @@ static void code_number (float f)
}
}
+/*
+** Search a local name and if find return its index. If do not find return -1
+*/
+static int lua_localname (Word n)
+{
+ int i;
+ for (i=nlocalvar-1; i >= 0; i--)
+ if (n == localvar[i]) return i; /* local var */
+ return -1; /* global var */
+}
+
+/*
+** Push a variable given a number. If number is positive, push global variable
+** indexed by (number -1). If negative, push local indexed by ABS(number)-1.
+** Otherwise, if zero, push indexed variable (record).
+*/
+static void lua_pushvar (Long number)
+{
+ if (number > 0) /* global var */
+ {
+ code_byte(PUSHGLOBAL);
+ code_word(number-1);
+ }
+ else if (number < 0) /* local var */
+ {
+ number = (-number) - 1;
+ if (number < 10) code_byte(PUSHLOCAL0 + number);
+ else
+ {
+ code_byte(PUSHLOCAL);
+ code_byte(number);
+ }
+ }
+ else
+ {
+ code_byte(PUSHINDEXED);
+ }
+}
+
+static void lua_codeadjust (int n)
+{
+ if (n+nlocalvar == 0)
+ code_byte(ADJUST0);
+ else
+ {
+ code_byte(ADJUST);
+ code_byte(n+nlocalvar);
+ }
+}
+
+static void init_function (TreeNode *func)
+{
+ if (funcCode == NULL) /* first function */
+ {
+ funcCode = newvector(CODE_BLOCK, Byte);
+ maxcode = CODE_BLOCK;
+ }
+ pc=0; basepc=funcCode; maxcurr=maxcode;
+ nlocalvar=0;
+ if (lua_debug)
+ {
+ code_byte(SETFUNCTION);
+ code_code((Byte *)strdup(lua_file[lua_nfile-1]));
+ code_word(luaI_findconstant(func));
+ }
+}
+
+static void codereturn (void)
+{
+ if (lua_debug) code_byte(RESET);
+ if (nlocalvar == 0)
+ code_byte(RETCODE0);
+ else
+ {
+ code_byte(RETCODE);
+ code_byte(nlocalvar);
+ }
+}
+
+static void codedebugline (void)
+{
+ if (lua_debug)
+ {
+ code_byte(SETLINE);
+ code_word(lua_linenumber);
+ }
+}
+
+static void adjust_mult_assign (int vars, int exps, int temps)
+{
+ if (exps < 0)
+ {
+ int r = vars - (-exps-1);
+ if (r >= 0)
+ code_byte(r);
+ else
+ {
+ code_byte(0);
+ lua_codeadjust(temps);
+ }
+ }
+ else if (vars != exps)
+ lua_codeadjust(temps);
+}
+
+static void lua_codestore (int i)
+{
+ if (varbuffer[i] > 0) /* global var */
+ {
+ code_byte(STOREGLOBAL);
+ code_word(varbuffer[i]-1);
+ }
+ else if (varbuffer[i] < 0) /* local var */
+ {
+ int number = (-varbuffer[i]) - 1;
+ if (number < 10) code_byte(STORELOCAL0 + number);
+ else
+ {
+ code_byte(STORELOCAL);
+ code_byte(number);
+ }
+ }
+ else /* indexed var */
+ {
+ int j;
+ int upper=0; /* number of indexed variables upper */
+ int param; /* number of itens until indexed expression */
+ for (j=i+1; j <nvarbuffer; j++)
+ if (varbuffer[j] == 0) upper++;
+ param = upper*2 + i;
+ if (param == 0)
+ code_byte(STOREINDEXED0);
+ else
+ {
+ code_byte(STOREINDEXED);
+ code_byte(param);
+ }
+ }
+}
+
+static void codeIf (Long thenAdd, Long elseAdd)
+{
+ Long elseinit = elseAdd+sizeof(Word)+1;
+ if (pc == elseinit) /* no else */
+ {
+ pc -= sizeof(Word)+1;
+ elseinit = pc;
+ }
+ else
+ {
+ basepc[elseAdd] = JMP;
+ code_word_at(basepc+elseAdd+1, pc-elseinit);
+ }
+ basepc[thenAdd] = IFFJMP;
+ code_word_at(basepc+thenAdd+1,elseinit-(thenAdd+sizeof(Word)+1));
+}
+
+static void yyerror (char *s)
+{
+ static char msg[256];
+ sprintf (msg,"%s near \"%s\" at line %d in file \"%s\"",
+ s, lua_lasttext (), lua_linenumber, lua_filename());
+ lua_error (msg);
+}
+
+
+/*
+** Parse LUA code.
+*/
+void lua_parse (Byte **code)
+{
+ initcode = code;
+ *initcode = newvector(CODE_BLOCK, Byte);
+ maincode = 0;
+ maxmain = CODE_BLOCK;
+ if (yyparse ()) lua_error("parse error");
+ (*initcode)[maincode++] = RETCODE0;
+#if LISTING
+{ static void PrintCode (Byte *c, Byte *end);
+ PrintCode(*initcode,*initcode+maincode); }
+#endif
+}
+
%}
@@ -555,190 +738,6 @@ setdebug : DEBUG {lua_debug = $1;}
%%
-/*
-** Search a local name and if find return its index. If do not find return -1
-*/
-static int lua_localname (Word n)
-{
- int i;
- for (i=nlocalvar-1; i >= 0; i--)
- if (n == localvar[i]) return i; /* local var */
- return -1; /* global var */
-}
-
-/*
-** Push a variable given a number. If number is positive, push global variable
-** indexed by (number -1). If negative, push local indexed by ABS(number)-1.
-** Otherwise, if zero, push indexed variable (record).
-*/
-static void lua_pushvar (Long number)
-{
- if (number > 0) /* global var */
- {
- code_byte(PUSHGLOBAL);
- code_word(number-1);
- }
- else if (number < 0) /* local var */
- {
- number = (-number) - 1;
- if (number < 10) code_byte(PUSHLOCAL0 + number);
- else
- {
- code_byte(PUSHLOCAL);
- code_byte(number);
- }
- }
- else
- {
- code_byte(PUSHINDEXED);
- }
-}
-
-static void lua_codeadjust (int n)
-{
- if (n+nlocalvar == 0)
- code_byte(ADJUST0);
- else
- {
- code_byte(ADJUST);
- code_byte(n+nlocalvar);
- }
-}
-
-static void init_function (TreeNode *func)
-{
- if (funcCode == NULL) /* first function */
- {
- funcCode = newvector(CODE_BLOCK, Byte);
- maxcode = CODE_BLOCK;
- }
- pc=0; basepc=funcCode; maxcurr=maxcode;
- nlocalvar=0;
- if (lua_debug)
- {
- code_byte(SETFUNCTION);
- code_code((Byte *)strdup(lua_file[lua_nfile-1]));
- code_word(luaI_findconstant(func));
- }
-}
-
-static void codereturn (void)
-{
- if (lua_debug) code_byte(RESET);
- if (nlocalvar == 0)
- code_byte(RETCODE0);
- else
- {
- code_byte(RETCODE);
- code_byte(nlocalvar);
- }
-}
-
-static void codedebugline (void)
-{
- if (lua_debug)
- {
- code_byte(SETLINE);
- code_word(lua_linenumber);
- }
-}
-
-static void adjust_mult_assign (int vars, int exps, int temps)
-{
- if (exps < 0)
- {
- int r = vars - (-exps-1);
- if (r >= 0)
- code_byte(r);
- else
- {
- code_byte(0);
- lua_codeadjust(temps);
- }
- }
- else if (vars != exps)
- lua_codeadjust(temps);
-}
-
-static void lua_codestore (int i)
-{
- if (varbuffer[i] > 0) /* global var */
- {
- code_byte(STOREGLOBAL);
- code_word(varbuffer[i]-1);
- }
- else if (varbuffer[i] < 0) /* local var */
- {
- int number = (-varbuffer[i]) - 1;
- if (number < 10) code_byte(STORELOCAL0 + number);
- else
- {
- code_byte(STORELOCAL);
- code_byte(number);
- }
- }
- else /* indexed var */
- {
- int j;
- int upper=0; /* number of indexed variables upper */
- int param; /* number of itens until indexed expression */
- for (j=i+1; j <nvarbuffer; j++)
- if (varbuffer[j] == 0) upper++;
- param = upper*2 + i;
- if (param == 0)
- code_byte(STOREINDEXED0);
- else
- {
- code_byte(STOREINDEXED);
- code_byte(param);
- }
- }
-}
-
-static void codeIf (Long thenAdd, Long elseAdd)
-{
- Long elseinit = elseAdd+sizeof(Word)+1;
- if (pc == elseinit) /* no else */
- {
- pc -= sizeof(Word)+1;
- elseinit = pc;
- }
- else
- {
- basepc[elseAdd] = JMP;
- code_word_at(basepc+elseAdd+1, pc-elseinit);
- }
- basepc[thenAdd] = IFFJMP;
- code_word_at(basepc+thenAdd+1,elseinit-(thenAdd+sizeof(Word)+1));
-}
-
-static void yyerror (char *s)
-{
- static char msg[256];
- sprintf (msg,"%s near \"%s\" at line %d in file \"%s\"",
- s, lua_lasttext (), lua_linenumber, lua_filename());
- lua_error (msg);
-}
-
-
-/*
-** Parse LUA code.
-*/
-void lua_parse (Byte **code)
-{
- initcode = code;
- *initcode = newvector(CODE_BLOCK, Byte);
- maincode = 0;
- maxmain = CODE_BLOCK;
- if (yyparse ()) lua_error("parse error");
- (*initcode)[maincode++] = RETCODE0;
-#if LISTING
-{ static void PrintCode (Byte *c, Byte *end);
- PrintCode(*initcode,*initcode+maincode); }
-#endif
-}
-
-
#if LISTING
static void PrintCode (Byte *code, Byte *end)
