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'expdesc' doesn't depend on 'actvar' for var. info.

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In preparation for 'global *', the structure 'expdesc' does not point
to 'actvar.arr' for information about global variables.
This commit is contained in:
Roberto Ierusalimschy
2025-05-11 11:51:58 -03:00
parent 7ade155762
commit 5b1ab8efdc
3 changed files with 23 additions and 17 deletions
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16
lparser.h
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@@ -45,16 +45,19 @@ typedef enum {
info = absolute index in 'actvar.arr' */
VINDEXED, /* indexed variable;
ind.t = table register;
ind.idx = key's R index */
ind.idx = key's R index;
ind.ro = true if it represents a read-only global;
ind.keystr = if key is a string, index in 'k' of that string;
-1 if key is not a string */
VINDEXUP, /* indexed upvalue;
ind.t = table upvalue;
ind.idx = key's K index */
ind.idx = key's K index;
ind.* as in VINDEXED */
VINDEXI, /* indexed variable with constant integer;
ind.t = table register;
ind.idx = key's value */
VINDEXSTR, /* indexed variable with literal string;
ind.t = table register;
ind.idx = key's K index */
ind.idx = key's K index;
ind.* as in VINDEXED */
VJMP, /* expression is a test/comparison;
info = pc of corresponding jump instruction */
VRELOC, /* expression can put result in any register;
@@ -77,8 +80,9 @@ typedef struct expdesc {
int info; /* for generic use */
struct { /* for indexed variables */
short idx; /* index (R or "long" K) */
short vidx; /* index in 'actvar.arr' or -1 if not a declared global */
lu_byte t; /* table (register or upvalue) */
lu_byte ro; /* true if variable is read-only */
int keystr; /* index in 'k' of string key, or -1 if not a string */
} ind;
struct { /* for local variables */
lu_byte ridx; /* register holding the variable */