summaryrefslogtreecommitdiff
path: root/src/lparser.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/lparser.h')
-rw-r--r--src/lparser.h50
1 files changed, 45 insertions, 5 deletions
diff --git a/src/lparser.h b/src/lparser.h
index 9825ec57..445acea6 100644
--- a/src/lparser.h
+++ b/src/lparser.h
@@ -1,5 +1,5 @@
/*
-** $Id: lparser.h,v 1.3 1999/02/25 19:13:56 roberto Exp $
+** $Id: lparser.h,v 1.26 2000/10/09 13:47:46 roberto Exp $
** LL(1) Parser and code generator for Lua
** See Copyright Notice in lua.h
*/
@@ -11,10 +11,50 @@
#include "lzio.h"
-void luaY_codedebugline (int line);
-TProtoFunc *luaY_parser (ZIO *z);
-void luaY_error (char *s);
-void luaY_syntaxerror (char *s, char *token);
+/*
+** Expression descriptor
+*/
+
+typedef enum {
+ VGLOBAL,
+ VLOCAL,
+ VINDEXED,
+ VEXP
+} expkind;
+
+typedef struct expdesc {
+ expkind k;
+ union {
+ int index; /* VGLOBAL: `kstr' index of global name; VLOCAL: stack index */
+ struct {
+ int t; /* patch list of `exit when true' */
+ int f; /* patch list of `exit when false' */
+ } l;
+ } u;
+} expdesc;
+
+
+
+/* state needed to generate code for a given function */
+typedef struct FuncState {
+ Proto *f; /* current function header */
+ struct FuncState *prev; /* enclosing function */
+ struct LexState *ls; /* lexical state */
+ struct lua_State *L; /* copy of the Lua state */
+ int pc; /* next position to code */
+ int lasttarget; /* `pc' of last `jump target' */
+ int jlt; /* list of jumps to `lasttarget' */
+ short stacklevel; /* number of values on activation register */
+ short nactloc; /* number of active local variables */
+ short nupvalues; /* number of upvalues */
+ int lastline; /* line where last `lineinfo' was generated */
+ struct Breaklabel *bl; /* chain of breakable blocks */
+ expdesc upvalues[MAXUPVALUES]; /* upvalues */
+ int actloc[MAXLOCALS]; /* local-variable stack (indices to locvars) */
+} FuncState;
+
+
+Proto *luaY_parser (lua_State *L, ZIO *z);
#endif