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authornobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2003-07-11 16:22:01 +0000
committernobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2003-07-11 16:22:01 +0000
commitb2ffc1fcab6c523dba05ab28380572f2609fae42 (patch)
treeb378e900b9ab5596abee31fa19228165147a27ee /parse.y
parentbc7a97c82647406ee0df4bc2066e4f77c8572eb0 (diff)
* eval.c (avalue_to_svalue): typo.
* eval.c (rb_load): rb_prohibit_interrupt should not underflow. * parse.y (NODE_STRTERM, tokadd_string, parse_string): moved string nest level from a static variable to NODE_STRTERM. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@4063 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'parse.y')
-rw-r--r--parse.y55
1 files changed, 26 insertions, 29 deletions
diff --git a/parse.y b/parse.y
index 4035ddf..44ca654 100644
--- a/parse.y
+++ b/parse.y
@@ -76,7 +76,6 @@ static enum lex_state {
EXPR_CLASS, /* immediate after `class', no here document. */
} lex_state;
static NODE *lex_strterm;
-static int lex_strnest;
#ifdef HAVE_LONG_LONG
typedef unsigned LONG_LONG stack_type;
@@ -175,9 +174,16 @@ static void top_local_setup();
#define NODE_STRTERM NODE_ZARRAY /* nothing to gc */
#define NODE_HEREDOC NODE_ARRAY /* 1, 3 to gc */
+#define ESCAPED_TERM (1 << CHAR_BIT)
+#define SIGN_EXTEND(x,n) (((1<<(n))-1-((x)&~(~0<<(n))))^~(~0<<(n)))
#define nd_func u1.id
-#define nd_term u2.id
-#define nd_paren u3.id
+#if SIZEOF_SHORT == 2
+#define nd_term(node) ((signed short)(node)->u2.id)
+#else
+#define nd_term(node) SIGN_EXTEND((node)->u2.id, CHAR_BIT*2)
+#endif
+#define nd_paren(node) (char)((node)->u2.id >> CHAR_BIT*2)
+#define nd_nest u3.id
%}
@@ -1961,7 +1967,6 @@ words : tWORDS_BEG ' ' tSTRING_END
word_list : /* none */
{
- lex_strnest = 0;
$$ = 0;
}
| word_list word ' '
@@ -1989,7 +1994,6 @@ qwords : tQWORDS_BEG ' ' tSTRING_END
qword_list : /* none */
{
- lex_strnest = 0;
$$ = 0;
}
| qword_list tSTRING_CONTENT ' '
@@ -2000,7 +2004,6 @@ qword_list : /* none */
string_contents : /* none */
{
- lex_strnest = 0;
$$ = 0;
}
| string_contents string_content
@@ -2011,7 +2014,6 @@ string_contents : /* none */
xstring_contents: /* none */
{
- lex_strnest = 0;
$$ = 0;
}
| xstring_contents string_content
@@ -2023,27 +2025,23 @@ xstring_contents: /* none */
string_content : tSTRING_CONTENT
| tSTRING_DVAR
{
- $<num>1 = lex_strnest;
$<node>$ = lex_strterm;
lex_strterm = 0;
lex_state = EXPR_BEG;
}
string_dvar
{
- lex_strnest = $<num>1;
lex_strterm = $<node>2;
$$ = NEW_EVSTR($3);
}
| tSTRING_DBEG term_push
{
- $<num>1 = lex_strnest;
$<node>$ = lex_strterm;
lex_strterm = 0;
lex_state = EXPR_BEG;
}
compstmt '}'
{
- lex_strnest = $<num>1;
quoted_term = $2;
lex_strterm = $<node>3;
if (($$ = $4) && nd_type($$) == NODE_NEWLINE) {
@@ -2064,8 +2062,8 @@ term_push : /* none */
{
if (($$ = quoted_term) == -1 &&
nd_type(lex_strterm) == NODE_STRTERM &&
- !lex_strterm->nd_paren) {
- quoted_term = lex_strterm->nd_term;
+ !nd_paren(lex_strterm)) {
+ quoted_term = nd_term(lex_strterm);
}
}
;
@@ -2521,7 +2519,6 @@ yycompile(f, line)
ruby_eval_tree = 0;
heredoc_end = 0;
lex_strterm = 0;
- lex_strnest = 0;
quoted_term = -1;
ruby_current_node = 0;
ruby_sourcefile = rb_source_filename(f);
@@ -2955,21 +2952,21 @@ dispose_string(str)
}
static int
-tokadd_string(func, term, paren)
- int func, term, paren;
+tokadd_string(func, term, paren, nest)
+ int func, term, paren, *nest;
{
int c;
while ((c = nextc()) != -1) {
if (paren && c == paren) {
- lex_strnest++;
+ ++*nest;
}
else if (c == term) {
- if (!lex_strnest) {
+ if (!nest || !*nest) {
pushback(c);
break;
}
- --lex_strnest;
+ --*nest;
}
else if ((func & STR_FUNC_EXPAND) && c == '#' && lex_p < lex_pend) {
int c2 = *lex_p;
@@ -3035,15 +3032,15 @@ tokadd_string(func, term, paren)
}
#define NEW_STRTERM(func, term, paren) \
- rb_node_newnode(NODE_STRTERM, (func), (term), (paren))
+ rb_node_newnode(NODE_STRTERM, (func), (term) | ((paren) << (CHAR_BIT * 2)), 0)
static int
parse_string(quote)
NODE *quote;
{
int func = quote->nd_func;
- int term = quote->nd_term;
- int paren = quote->nd_paren;
+ int term = nd_term(quote);
+ int paren = nd_paren(quote);
int c, space = 0;
if (func == -1) return tSTRING_END;
@@ -3052,7 +3049,7 @@ parse_string(quote)
do {c = nextc();} while (ISSPACE(c));
space = 1;
}
- if ((c == term && !lex_strnest) ||
+ if ((c == term && !quote->nd_nest) ||
(c == '\\' && WHEN_QUOTED_TERM(peek(quoted_term_char)) &&
(c = nextc()) == term)) {
if (func & STR_FUNC_QWORDS) {
@@ -3080,7 +3077,7 @@ parse_string(quote)
tokadd('#');
}
pushback(c);
- if (tokadd_string(func, term, paren) == -1) {
+ if (tokadd_string(func, term, paren, &quote->nd_nest) == -1) {
ruby_sourceline = nd_line(quote);
rb_compile_error("unterminated string meets end of file");
return tSTRING_END;
@@ -3249,7 +3246,7 @@ here_document(here)
}
do {
pushback(c);
- if ((c = tokadd_string(func, '\n', 0)) == -1) goto error;
+ if ((c = tokadd_string(func, '\n', 0, NULL)) == -1) goto error;
if (c != '\n') {
yylval.node = NEW_STR(rb_str_new(tok(), toklen()));
return tSTRING_CONTENT;
@@ -4080,9 +4077,9 @@ yylex()
}
pushback(c);
if (QUOTED_TERM_P(c)) {
- if (!(quoted_term & (1 << CHAR_BIT))) {
+ if (!(quoted_term & ESCAPED_TERM)) {
rb_warn("escaped terminator '%c' inside string interpolation", c);
- quoted_term |= 1 << CHAR_BIT;
+ quoted_term |= ESCAPED_TERM;
}
goto retry;
}
@@ -4097,10 +4094,10 @@ yylex()
quotation:
if (c == '\\' && WHEN_QUOTED_TERM(peek(quoted_term_char))) {
c = nextc();
- if (!(quoted_term & (1 << CHAR_BIT))) {
+ if (!(quoted_term & ESCAPED_TERM)) {
rb_warn("escaped terminator '%s%c' inside string interpolation",
(c == '\'' ? "\\" : ""), c);
- quoted_term |= 1 << CHAR_BIT;
+ quoted_term |= ESCAPED_TERM;
}
}
if (!ISALNUM(c)) {