X-Git-Url: http://git.vpit.fr/?p=perl%2Fmodules%2Fre-engine-Hooks.git;a=blobdiff_plain;f=src%2F5021001%2Fdquote_static.c;fp=src%2F5021001%2Fdquote_static.c;h=0000000000000000000000000000000000000000;hp=3554d338bed5c9d41ccb799c15d0b15fa4282af3;hb=fe5c260b357f1011dff1c4fdf91dc1811675cca9;hpb=a2a125c4999b4c78dcf85fa24c30b832527b500a diff --git a/src/5021001/dquote_static.c b/src/5021001/dquote_static.c deleted file mode 100644 index 3554d33..0000000 --- a/src/5021001/dquote_static.c +++ /dev/null @@ -1,329 +0,0 @@ -/* dquote_static.c - * - * This file contains static functions that are related to - * parsing double-quotish expressions, but are used in more than - * one file. - * - * It is currently #included by regcomp.c and toke.c. -*/ - -#define PERL_IN_DQUOTE_STATIC_C -#include "embed.h" - -/* - - regcurly - a little FSA that accepts {\d+,?\d*} - Pulled from regcomp.c. - */ -PERL_STATIC_INLINE I32 -S_regcurly(pTHX_ const char *s) -{ - PERL_UNUSED_CONTEXT; - PERL_ARGS_ASSERT_REGCURLY; - - if (*s++ != '{') - return FALSE; - if (!isDIGIT(*s)) - return FALSE; - while (isDIGIT(*s)) - s++; - if (*s == ',') { - s++; - while (isDIGIT(*s)) - s++; - } - - return *s == '}'; -} - -/* XXX Add documentation after final interface and behavior is decided */ -/* May want to show context for error, so would pass Perl_bslash_c(pTHX_ const char* current, const char* start, const bool output_warning) - U8 source = *current; -*/ - -STATIC char -S_grok_bslash_c(pTHX_ const char source, const bool output_warning) -{ - - U8 result; - - if (! isPRINT_A(source)) { - Perl_croak(aTHX_ "%s", - "Character following \"\\c\" must be printable ASCII"); - } - else if (source == '{') { - assert(isPRINT_A(toCTRL('{'))); - - /* diag_listed_as: Use "%s" instead of "%s" */ - Perl_croak(aTHX_ "Use \"%c\" instead of \"\\c{\"", toCTRL('{')); - } - - result = toCTRL(source); - if (output_warning && isPRINT_A(result)) { - U8 clearer[3]; - U8 i = 0; - if (! isWORDCHAR(result)) { - clearer[i++] = '\\'; - } - clearer[i++] = result; - clearer[i++] = '\0'; - - Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), - "\"\\c%c\" is more clearly written simply as \"%s\"", - source, - clearer); - } - - return result; -} - -STATIC bool -S_grok_bslash_o(pTHX_ char **s, UV *uv, const char** error_msg, - const bool output_warning, const bool strict, - const bool silence_non_portable, - const bool UTF) -{ - -/* Documentation to be supplied when interface nailed down finally - * This returns FALSE if there is an error which the caller need not recover - * from; , otherwise TRUE. In either case the caller should look at *len - * On input: - * s is the address of a pointer to a NULL terminated string that begins - * with 'o', and the previous character was a backslash. At exit, *s - * will be advanced to the byte just after those absorbed by this - * function. Hence the caller can continue parsing from there. In - * the case of an error, this routine has generally positioned *s to - * point just to the right of the first bad spot, so that a message - * that has a "<--" to mark the spot will be correctly positioned. - * uv points to a UV that will hold the output value, valid only if the - * return from the function is TRUE - * error_msg is a pointer that will be set to an internal buffer giving an - * error message upon failure (the return is FALSE). Untouched if - * function succeeds - * output_warning says whether to output any warning messages, or suppress - * them - * strict is true if this should fail instead of warn if there are - * non-octal digits within the braces - * silence_non_portable is true if to suppress warnings about the code - * point returned being too large to fit on all platforms. - * UTF is true iff the string *s is encoded in UTF-8. - */ - char* e; - STRLEN numbers_len; - I32 flags = PERL_SCAN_ALLOW_UNDERSCORES - | PERL_SCAN_DISALLOW_PREFIX - /* XXX Until the message is improved in grok_oct, handle errors - * ourselves */ - | PERL_SCAN_SILENT_ILLDIGIT; - - PERL_ARGS_ASSERT_GROK_BSLASH_O; - - - assert(**s == 'o'); - (*s)++; - - if (**s != '{') { - *error_msg = "Missing braces on \\o{}"; - return FALSE; - } - - e = strchr(*s, '}'); - if (!e) { - (*s)++; /* Move past the '{' */ - while (isOCTAL(**s)) { /* Position beyond the legal digits */ - (*s)++; - } - *error_msg = "Missing right brace on \\o{"; - return FALSE; - } - - (*s)++; /* Point to expected first digit (could be first byte of utf8 - sequence if not a digit) */ - numbers_len = e - *s; - if (numbers_len == 0) { - (*s)++; /* Move past the } */ - *error_msg = "Number with no digits"; - return FALSE; - } - - if (silence_non_portable) { - flags |= PERL_SCAN_SILENT_NON_PORTABLE; - } - - *uv = grok_oct(*s, &numbers_len, &flags, NULL); - /* Note that if has non-octal, will ignore everything starting with that up - * to the '}' */ - - if (numbers_len != (STRLEN) (e - *s)) { - if (strict) { - *s += numbers_len; - *s += (UTF) ? UTF8SKIP(*s) : (STRLEN) 1; - *error_msg = "Non-octal character"; - return FALSE; - } - else if (output_warning) { - Perl_ck_warner(aTHX_ packWARN(WARN_DIGIT), - /* diag_listed_as: Non-octal character '%c'. Resolved as "%s" */ - "Non-octal character '%c'. Resolved as \"\\o{%.*s}\"", - *(*s + numbers_len), - (int) numbers_len, - *s); - } - } - - /* Return past the '}' */ - *s = e + 1; - - return TRUE; -} - -PERL_STATIC_INLINE bool -S_grok_bslash_x(pTHX_ char **s, UV *uv, const char** error_msg, - const bool output_warning, const bool strict, - const bool silence_non_portable, - const bool UTF) -{ - -/* Documentation to be supplied when interface nailed down finally - * This returns FALSE if there is an error which the caller need not recover - * from; , otherwise TRUE. In either case the caller should look at *len - * On input: - * s is the address of a pointer to a NULL terminated string that begins - * with 'x', and the previous character was a backslash. At exit, *s - * will be advanced to the byte just after those absorbed by this - * function. Hence the caller can continue parsing from there. In - * the case of an error, this routine has generally positioned *s to - * point just to the right of the first bad spot, so that a message - * that has a "<--" to mark the spot will be correctly positioned. - * uv points to a UV that will hold the output value, valid only if the - * return from the function is TRUE - * error_msg is a pointer that will be set to an internal buffer giving an - * error message upon failure (the return is FALSE). Untouched if - * function succeeds - * output_warning says whether to output any warning messages, or suppress - * them - * strict is true if anything out of the ordinary should cause this to - * fail instead of warn or be silent. For example, it requires - * exactly 2 digits following the \x (when there are no braces). - * 3 digits could be a mistake, so is forbidden in this mode. - * silence_non_portable is true if to suppress warnings about the code - * point returned being too large to fit on all platforms. - * UTF is true iff the string *s is encoded in UTF-8. - */ - char* e; - STRLEN numbers_len; - I32 flags = PERL_SCAN_DISALLOW_PREFIX; - - PERL_ARGS_ASSERT_GROK_BSLASH_X; - - PERL_UNUSED_ARG(output_warning); - - assert(**s == 'x'); - (*s)++; - - if (strict) { - flags |= PERL_SCAN_SILENT_ILLDIGIT; - } - - if (**s != '{') { - STRLEN len = (strict) ? 3 : 2; - - *uv = grok_hex(*s, &len, &flags, NULL); - *s += len; - if (strict && len != 2) { - if (len < 2) { - *s += (UTF) ? UTF8SKIP(*s) : 1; - *error_msg = "Non-hex character"; - } - else { - *error_msg = "Use \\x{...} for more than two hex characters"; - } - return FALSE; - } - return TRUE; - } - - e = strchr(*s, '}'); - if (!e) { - (*s)++; /* Move past the '{' */ - while (isXDIGIT(**s)) { /* Position beyond the legal digits */ - (*s)++; - } - /* XXX The corresponding message above for \o is just '\\o{'; other - * messages for other constructs include the '}', so are inconsistent. - */ - *error_msg = "Missing right brace on \\x{}"; - return FALSE; - } - - (*s)++; /* Point to expected first digit (could be first byte of utf8 - sequence if not a digit) */ - numbers_len = e - *s; - if (numbers_len == 0) { - if (strict) { - (*s)++; /* Move past the } */ - *error_msg = "Number with no digits"; - return FALSE; - } - return TRUE; - } - - flags |= PERL_SCAN_ALLOW_UNDERSCORES; - if (silence_non_portable) { - flags |= PERL_SCAN_SILENT_NON_PORTABLE; - } - - *uv = grok_hex(*s, &numbers_len, &flags, NULL); - /* Note that if has non-hex, will ignore everything starting with that up - * to the '}' */ - - if (strict && numbers_len != (STRLEN) (e - *s)) { - *s += numbers_len; - *s += (UTF) ? UTF8SKIP(*s) : 1; - *error_msg = "Non-hex character"; - return FALSE; - } - - /* Return past the '}' */ - *s = e + 1; - - return TRUE; -} - -STATIC char* -S_form_short_octal_warning(pTHX_ - const char * const s, /* Points to first non-octal */ - const STRLEN len /* Length of octals string, so - (s-len) points to first - octal */ -) { - /* Return a character string consisting of a warning message for when a - * string constant in octal is weird, like "\078". */ - - const char * sans_leading_zeros = s - len; - - PERL_ARGS_ASSERT_FORM_SHORT_OCTAL_WARNING; - - assert(*s == '8' || *s == '9'); - - /* Remove the leading zeros, retaining one zero so won't be zero length */ - while (*sans_leading_zeros == '0') sans_leading_zeros++; - if (sans_leading_zeros == s) { - sans_leading_zeros--; - } - - return Perl_form(aTHX_ - "'%.*s' resolved to '\\o{%.*s}%c'", - (int) (len + 2), s - len - 1, - (int) (s - sans_leading_zeros), sans_leading_zeros, - *s); -} - -/* - * Local variables: - * c-indentation-style: bsd - * c-basic-offset: 4 - * indent-tabs-mode: nil - * End: - * - * ex: set ts=8 sts=4 sw=4 et: - */