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-rw-r--r--src/backend/parser/scan.l117
-rw-r--r--src/backend/po/nls.mk2
-rw-r--r--src/test/regress/expected/strings.out2
3 files changed, 73 insertions, 48 deletions
diff --git a/src/backend/parser/scan.l b/src/backend/parser/scan.l
index cb8610c87ac..f59cd7b27b4 100644
--- a/src/backend/parser/scan.l
+++ b/src/backend/parser/scan.l
@@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/parser/scan.l,v 1.92 2002/04/20 21:56:14 petere Exp $
+ * $Header: /cvsroot/pgsql/src/backend/parser/scan.l,v 1.93 2002/05/01 17:12:07 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -56,6 +56,17 @@ static void addlit(char *ytext, int yleng);
static void addlitchar(unsigned char ychar);
static char *litbufdup(void);
+/*
+ * When we parse a token that requires multiple lexer rules to process,
+ * we set token_start to point at the true start of the token, for use
+ * by yyerror(). yytext will point at just the text consumed by the last
+ * rule, so it's not very helpful (eg, it might contain just the last
+ * quote mark of a quoted identifier). But to avoid cluttering every rule
+ * with setting token_start, we allow token_start = NULL to denote that
+ * it's okay to use yytext.
+ */
+static char *token_start;
+
/* Handles to the buffer that the lexer uses internally */
static YY_BUFFER_STATE scanbufhandle;
static char *scanbuf;
@@ -208,7 +219,7 @@ non_newline [^\n\r]
comment ("--"{non_newline}*)
-whitespace ({space}|{comment})
+whitespace ({space}+|{comment})
/*
* SQL92 requires at least one newline in the whitespace separating
@@ -235,9 +246,16 @@ other .
*/
%%
+
+%{
+ /* code to execute during start of each call of yylex() */
+ token_start = NULL;
+%}
+
{whitespace} { /* ignore */ }
{xcstart} {
+ token_start = yytext;
xcdepth = 0;
BEGIN(xc);
/* Put back any characters past slash-star; see above */
@@ -252,7 +270,11 @@ other .
<xc>{xcstop} {
if (xcdepth <= 0)
+ {
BEGIN(INITIAL);
+ /* reset token_start for next token */
+ token_start = NULL;
+ }
else
xcdepth--;
}
@@ -261,9 +283,10 @@ other .
<xc>{op_chars} { /* ignore */ }
-<xc><<EOF>> { elog(ERROR, "Unterminated /* comment"); }
+<xc><<EOF>> { yyerror("unterminated /* comment"); }
{xbitstart} {
+ token_start = yytext;
BEGIN(xbit);
startlit();
addlitchar('b');
@@ -271,8 +294,7 @@ other .
<xbit>{xbitstop} {
BEGIN(INITIAL);
if (literalbuf[strspn(literalbuf + 1, "01") + 1] != '\0')
- elog(ERROR, "invalid bit string input: '%s'",
- literalbuf);
+ yyerror("invalid bit string input");
yylval.str = litbufdup();
return BITCONST;
}
@@ -284,9 +306,10 @@ other .
<xbit>{xbitcat} {
/* ignore */
}
-<xbit><<EOF>> { elog(ERROR, "unterminated bit string literal"); }
+<xbit><<EOF>> { yyerror("unterminated bit string literal"); }
{xhstart} {
+ token_start = yytext;
BEGIN(xh);
startlit();
}
@@ -303,14 +326,14 @@ other .
|| val != (long) ((int32) val)
#endif
)
- elog(ERROR, "Bad hexadecimal integer input '%s'",
- literalbuf);
+ yyerror("bad hexadecimal integer input");
yylval.ival = val;
return ICONST;
}
-<xh><<EOF>> { elog(ERROR, "Unterminated hexadecimal integer"); }
+<xh><<EOF>> { yyerror("unterminated hexadecimal integer"); }
{xqstart} {
+ token_start = yytext;
BEGIN(xq);
startlit();
}
@@ -335,30 +358,31 @@ other .
<xq>{xqcat} {
/* ignore */
}
-<xq><<EOF>> { elog(ERROR, "Unterminated quoted string"); }
+<xq><<EOF>> { yyerror("unterminated quoted string"); }
{xdstart} {
+ token_start = yytext;
BEGIN(xd);
startlit();
}
<xd>{xdstop} {
BEGIN(INITIAL);
- if (strlen(literalbuf) == 0)
- elog(ERROR, "zero-length delimited identifier");
- if (strlen(literalbuf) >= NAMEDATALEN)
+ if (literallen == 0)
+ yyerror("zero-length delimited identifier");
+ if (literallen >= NAMEDATALEN)
{
-#ifdef MULTIBYTE
int len;
- len = pg_mbcliplen(literalbuf,strlen(literalbuf),NAMEDATALEN-1);
- elog(WARNING, "identifier \"%s\" will be truncated to \"%.*s\"",
- literalbuf, len, literalbuf);
- literalbuf[len] = '\0';
+#ifdef MULTIBYTE
+ len = pg_mbcliplen(literalbuf, literallen,
+ NAMEDATALEN-1);
#else
- elog(WARNING, "identifier \"%s\" will be truncated to \"%.*s\"",
- literalbuf, NAMEDATALEN-1, literalbuf);
- literalbuf[NAMEDATALEN-1] = '\0';
+ len = NAMEDATALEN-1;
#endif
+ elog(NOTICE, "identifier \"%s\" will be truncated to \"%.*s\"",
+ literalbuf, len, literalbuf);
+ literalbuf[len] = '\0';
+ literallen = len;
}
yylval.str = litbufdup();
return IDENT;
@@ -369,7 +393,7 @@ other .
<xd>{xdinside} {
addlit(yytext, yyleng);
}
-<xd><<EOF>> { elog(ERROR, "Unterminated quoted identifier"); }
+<xd><<EOF>> { yyerror("unterminated quoted identifier"); }
{typecast} { return TYPECAST; }
@@ -383,8 +407,8 @@ other .
* character will match a prior rule, not this one.
*/
int nchars = yyleng;
- char *slashstar = strstr((char*)yytext, "/*");
- char *dashdash = strstr((char*)yytext, "--");
+ char *slashstar = strstr(yytext, "/*");
+ char *dashdash = strstr(yytext, "--");
if (slashstar && dashdash)
{
@@ -395,7 +419,7 @@ other .
else if (!slashstar)
slashstar = dashdash;
if (slashstar)
- nchars = slashstar - ((char*)yytext);
+ nchars = slashstar - yytext;
/*
* For SQL92 compatibility, '+' and '-' cannot be the
@@ -437,15 +461,15 @@ other .
}
/* Convert "!=" operator to "<>" for compatibility */
- if (strcmp((char*)yytext, "!=") == 0)
+ if (strcmp(yytext, "!=") == 0)
yylval.str = pstrdup("<>");
else
- yylval.str = pstrdup((char*)yytext);
+ yylval.str = pstrdup(yytext);
return Op;
}
{param} {
- yylval.ival = atol((char*)&yytext[1]);
+ yylval.ival = atol(yytext + 1);
return PARAM;
}
@@ -454,7 +478,7 @@ other .
char* endptr;
errno = 0;
- val = strtol((char *)yytext, &endptr, 10);
+ val = strtol(yytext, &endptr, 10);
if (*endptr != '\0' || errno == ERANGE
#ifdef HAVE_LONG_INT_64
/* if long > 32 bits, check for overflow of int4 */
@@ -463,28 +487,29 @@ other .
)
{
/* integer too large, treat it as a float */
- yylval.str = pstrdup((char*)yytext);
+ yylval.str = pstrdup(yytext);
return FCONST;
}
yylval.ival = val;
return ICONST;
}
{decimal} {
- yylval.str = pstrdup((char*)yytext);
+ yylval.str = pstrdup(yytext);
return FCONST;
}
{real} {
- yylval.str = pstrdup((char*)yytext);
+ yylval.str = pstrdup(yytext);
return FCONST;
}
{identifier} {
ScanKeyword *keyword;
+ char *ident;
int i;
/* Is it a keyword? */
- keyword = ScanKeywordLookup((char*) yytext);
+ keyword = ScanKeywordLookup(yytext);
if (keyword != NULL)
return keyword->value;
@@ -496,26 +521,25 @@ other .
* which seems appropriate under SQL99 rules, whereas
* the keyword comparison was NOT locale-dependent.
*/
- for (i = 0; yytext[i]; i++)
+ ident = pstrdup(yytext);
+ for (i = 0; ident[i]; i++)
{
- if (isupper((unsigned char) yytext[i]))
- yytext[i] = tolower((unsigned char) yytext[i]);
+ if (isupper((unsigned char) ident[i]))
+ ident[i] = tolower((unsigned char) ident[i]);
}
if (i >= NAMEDATALEN)
{
-#ifdef MULTIBYTE
int len;
- len = pg_mbcliplen(yytext,i,NAMEDATALEN-1);
- elog(WARNING, "identifier \"%s\" will be truncated to \"%.*s\"",
- yytext, len, yytext);
- yytext[len] = '\0';
+#ifdef MULTIBYTE
+ len = pg_mbcliplen(ident, i, NAMEDATALEN-1);
#else
- elog(WARNING, "identifier \"%s\" will be truncated to \"%.*s\"",
- yytext, NAMEDATALEN-1, yytext);
- yytext[NAMEDATALEN-1] = '\0';
+ len = NAMEDATALEN-1;
#endif
+ elog(NOTICE, "identifier \"%s\" will be truncated to \"%.*s\"",
+ ident, len, ident);
+ ident[len] = '\0';
}
- yylval.str = pstrdup((char*) yytext);
+ yylval.str = ident;
return IDENT;
}
@@ -526,7 +550,8 @@ other .
void
yyerror(const char *message)
{
- elog(ERROR, "parser: %s at or near \"%s\"", message, yytext);
+ elog(ERROR, "parser: %s at or near \"%s\"", message,
+ token_start ? token_start : yytext);
}
diff --git a/src/backend/po/nls.mk b/src/backend/po/nls.mk
index 75975029b3b..8797d8527d8 100644
--- a/src/backend/po/nls.mk
+++ b/src/backend/po/nls.mk
@@ -1,4 +1,4 @@
CATALOG_NAME := postgres
AVAIL_LANGUAGES := cs de hu ru zh_CN zh_TW
GETTEXT_FILES := + gettext-files
-GETTEXT_TRIGGERS:= elog:2 postmaster_error
+GETTEXT_TRIGGERS:= elog:2 postmaster_error yyerror
diff --git a/src/test/regress/expected/strings.out b/src/test/regress/expected/strings.out
index 42df7c06df2..ebfe8eeb663 100644
--- a/src/test/regress/expected/strings.out
+++ b/src/test/regress/expected/strings.out
@@ -17,7 +17,7 @@ SELECT 'first line'
' - next line' /* this comment is not allowed here */
' - third line'
AS "Illegal comment within continuation";
-ERROR: parser: parse error at or near "'"
+ERROR: parser: parse error at or near "' - third line'"
--
-- test conversions between various string types
--
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-29 17:50:04 +0000