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Remove unions in rb_strterm structs for alignment

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This commit is contained in:
Nobuyoshi Nakada 2023-10-13 03:33:48 +09:00
parent 82c8f22a36
commit cb06b6632a
2 changed files with 17 additions and 41 deletions
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38
internal/parse.h
View File

@ -22,48 +22,24 @@ struct rb_iseq_struct; /* in vm_core.h */
/* structs for managing terminator of string literal and heredocment */
typedef struct rb_strterm_literal_struct {
union {
VALUE dummy;
long nest;
} u0;
union {
VALUE dummy;
long func; /* STR_FUNC_* (e.g., STR_FUNC_ESCAPE and STR_FUNC_EXPAND) */
} u1;
union {
VALUE dummy;
long paren; /* '(' of `%q(...)` */
} u2;
union {
VALUE dummy;
long term; /* ')' of `%q(...)` */
} u3;
long nest;
long func; /* STR_FUNC_* (e.g., STR_FUNC_ESCAPE and STR_FUNC_EXPAND) */
long paren; /* '(' of `%q(...)` */
long term; /* ')' of `%q(...)` */
} rb_strterm_literal_t;
#define HERETERM_LENGTH_BITS ((SIZEOF_VALUE - 1) * CHAR_BIT - 1)
typedef struct rb_strterm_heredoc_struct {
VALUE lastline; /* the string of line that contains `<<"END"` */
long offset; /* the column of END in `<<"END"` */
int sourceline; /* lineno of the line that contains `<<"END"` */
unsigned length /* the length of END in `<<"END"` */
#if HERETERM_LENGTH_BITS < SIZEOF_INT * CHAR_BIT
: HERETERM_LENGTH_BITS
# define HERETERM_LENGTH_MAX ((1U << HERETERM_LENGTH_BITS) - 1)
#else
# define HERETERM_LENGTH_MAX UINT_MAX
#endif
;
#if HERETERM_LENGTH_BITS < SIZEOF_INT * CHAR_BIT
unsigned quote: 1;
unsigned func: 8;
#else
unsigned length; /* the length of END in `<<"END"` */
uint8_t quote;
uint8_t func;
#endif
} rb_strterm_heredoc_t;
STATIC_ASSERT(rb_strterm_heredoc_t, sizeof(rb_strterm_heredoc_t) <= 4 * SIZEOF_VALUE);
#define HERETERM_LENGTH_MAX UINT_MAX
typedef struct rb_strterm_struct {
VALUE flags;
union {

20
parse.y
View File

@ -7852,7 +7852,7 @@ tokadd_codepoint(struct parser_params *p, rb_encoding **encp,
p->lex.pcur += numlen;
if (p->lex.strterm == NULL ||
(strterm_is_heredoc((VALUE)p->lex.strterm)) ||
(p->lex.strterm->u.literal.u1.func != str_regexp)) {
(p->lex.strterm->u.literal.func != str_regexp)) {
if (wide ? (numlen == 0 || numlen > 6) : (numlen < 4)) {
literal_flush(p, p->lex.pcur);
yyerror0("invalid Unicode escape");
@ -7908,7 +7908,7 @@ tokadd_utf8(struct parser_params *p, rb_encoding **encp,
if (regexp_literal) { tokadd(p, '\\'); tokadd(p, 'u'); }
if (peek(p, open_brace)) { /* handle \u{...} form */
if (regexp_literal && p->lex.strterm->u.literal.u1.func == str_regexp) {
if (regexp_literal && p->lex.strterm->u.literal.func == str_regexp) {
/*
* Skip parsing validation code and copy bytes as-is until term or
* closing brace, in order to correctly handle extended regexps where
@ -8567,9 +8567,9 @@ parser_string_term(struct parser_params *p, int func)
static enum yytokentype
parse_string(struct parser_params *p, rb_strterm_literal_t *quote)
{
int func = (int)quote->u1.func;
int term = (int)quote->u3.term;
int paren = (int)quote->u2.paren;
int func = (int)quote->func;
int term = (int)quote->term;
int paren = (int)quote->paren;
int c, space = 0;
rb_encoding *enc = p->enc;
rb_encoding *base_enc = 0;
@ -8587,12 +8587,12 @@ parse_string(struct parser_params *p, rb_strterm_literal_t *quote)
space = 1;
}
if (func & STR_FUNC_LIST) {
quote->u1.func &= ~STR_FUNC_LIST;
quote->func &= ~STR_FUNC_LIST;
space = 1;
}
if (c == term && !quote->u0.nest) {
if (c == term && !quote->nest) {
if (func & STR_FUNC_QWORDS) {
quote->u1.func |= STR_FUNC_TERM;
quote->func |= STR_FUNC_TERM;
pushback(p, c); /* dispatch the term at tSTRING_END */
add_delayed_token(p, p->lex.ptok, p->lex.pcur, __LINE__);
return ' ';
@ -8612,7 +8612,7 @@ parse_string(struct parser_params *p, rb_strterm_literal_t *quote)
c = nextc(p);
}
pushback(p, c);
if (tokadd_string(p, func, term, paren, &quote->u0.nest,
if (tokadd_string(p, func, term, paren, &quote->nest,
&enc, &base_enc) == -1) {
if (p->eofp) {
#ifndef RIPPER
@ -8633,7 +8633,7 @@ parse_string(struct parser_params *p, rb_strterm_literal_t *quote)
else {
unterminated_literal("unterminated string meets end of file");
}
quote->u1.func |= STR_FUNC_TERM;
quote->func |= STR_FUNC_TERM;
}
}