mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-04-23 09:05:31 +00:00
Code Activity

add hex escape support theory_str

Browse source
This commit is contained in:
Murphy Berzish 2017-02-11 16:59:06 -05:00
parent c456795acd
commit 3670fa64e6
1 changed files with 16 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

20
src/ast/str_decl_plugin.cpp
View file

@ -375,8 +375,7 @@ app * str_util::mk_string_with_escape_characters(std::string & val) {
// check escape sequence
i++;
if (i >= val.length()) {
// TODO illegal escape sequence
NOT_IMPLEMENTED_YET();
get_manager().raise_exception("invalid escape sequence");
}
char escapeChar1 = val.at(i);
if (escapeChar1 == 'a') {
@ -398,8 +397,21 @@ app * str_util::mk_string_with_escape_characters(std::string & val) {
} else if (escapeChar1 == '\\') {
parsedStr.push_back('\\');
} else if (escapeChar1 == 'x') {
// TODO hex escape
NOT_IMPLEMENTED_YET();
// hex escape: we expect 'x' to be followed by exactly two hex digits
// which means that i+2 must be a valid index
if (i+2 >= val.length()) {
get_manager().raise_exception("invalid hex escape: \\x must be followed by exactly two hex digits");
}
char hexDigitHi = val.at(i+1);
char hexDigitLo = val.at(i+2);
i += 2;
if (!isxdigit((int)hexDigitHi) || !isxdigit((int)hexDigitLo)) {
get_manager().raise_exception("invalid hex escape: \\x must be followed by exactly two hex digits");
}
char tmp[3] = {hexDigitHi, hexDigitLo, '\0'};
long converted = strtol(tmp, NULL, 16);
unsigned char convChar = (unsigned char)converted;
parsedStr.push_back(convChar);
} else if (escapeChar1 == '0' || escapeChar1 == '1' || escapeChar1 == '2' || escapeChar1 == '3' ||
escapeChar1 == '4' || escapeChar1 == '5' || escapeChar1 == '6' || escapeChar1 == '7') {
// TODO octal escape