z3-z3-4.13.0.src.util.smt2_util.cpp Maven / Gradle / Ivy
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/*++
Copyright (c) 2011 Microsoft Corporation
Module Name:
smt2_util.cpp
Abstract:
Goodies for SMT2 standard
Author:
Leonardo (leonardo) 2012-10-20
Notes:
--*/
#include "util/smt2_util.h"
bool is_smt2_simple_symbol_char(char s) {
return
('0' <= s && s <= '9') ||
('a' <= s && s <= 'z') ||
('A' <= s && s <= 'Z') ||
s == '~' || s == '!' || s == '@' || s == '$' || s == '%' || s == '^' || s == '&' ||
s == '*' || s == '_' || s == '-' || s == '+' || s == '=' || s == '<' || s == '>' ||
s == '.' || s == '?' || s == '/';
}
bool is_smt2_quoted_symbol(char const * s) {
if (s == nullptr)
return false;
if ('0' <= s[0] && s[0] <= '9')
return true;
unsigned len = static_cast(strlen(s));
if (len >= 2 && s[0] == '|' && s[len-1] == '|') {
for (unsigned i = 1; i + 1 < len; i++) {
if (s[i] == '\\' && i + 2 < len && (s[i+1] == '\\' || s[i+1] == '|')) {
i++;
}
else if (s[i] == '\\' || s[i] == '|')
return true;
}
return false;
}
for (unsigned i = 0; i < len; i++)
if (!is_smt2_simple_symbol_char(s[i]))
return true;
return false;
}
bool is_smt2_quoted_symbol(symbol const & s) {
if (s.is_numerical())
return false;
return is_smt2_quoted_symbol(s.bare_str());
}
std::string mk_smt2_quoted_symbol(symbol const & s) {
SASSERT(is_smt2_quoted_symbol(s));
string_buffer<> buffer;
buffer.append('|');
char const * str = s.bare_str();
while (*str) {
if (*str == '|' || *str == '\\')
buffer.append('\\');
buffer.append(*str);
str++;
}
buffer.append('|');
return std::string(buffer.c_str());
}