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dump: render literals as regexes (with comments)

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This commit is contained in:
Justin Viiret 2017-01-09 11:05:02 +11:00 committed by Matthew Barr
parent 22edaad1dd
commit 68bdc800fc
1 changed files with 67 additions and 8 deletions
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75
src/rose/rose_build_dump.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2015-2016, Intel Corporation
* Copyright (c) 2015-2017, Intel Corporation
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
@ -419,22 +419,81 @@ string toHex(Iter i, const Iter &end) {
return oss.str();
}
static
bool isMetaChar(char c) {
switch (c) {
case '#':
case '$':
case '(':
case ')':
case '*':
case '+':
case '.':
case '/':
case '?':
case '[':
case '\\':
case ']':
case '^':
case '{':
case '|':
case '}':
return true;
default:
return false;
}
}
static
string toRegex(const string &lit) {
ostringstream os;
for (char c : lit) {
if (0x20 <= c && c <= 0x7e) {
if (isMetaChar(c)) {
os << "\\" << c;
} else {
os << c;
}
} else if (c == '\n') {
os << "\\n";
} else if (c == '\r') {
os << "\\r";
} else if (c == '\t') {
os << "\\t";
} else {
os << "\\x" << hex << setw(2) << setfill('0')
<< (unsigned)(c & 0xff) << dec;
}
}
return os.str();
}
static
void dumpTestLiterals(const string &filename, const vector<hwlmLiteral> &lits) {
ofstream of(filename.c_str());
// Unique regex index, as literals may share an ID.
u32 i = 0;
for (const hwlmLiteral &lit : lits) {
of << lit.id << "=";
if (lit.nocase) {
of << "!";
}
of << toHex(lit.s.begin(), lit.s.end());
// First, detail in a comment.
of << "# id=" << lit.id;
if (!lit.msk.empty()) {
of << " " << toHex(lit.msk.begin(), lit.msk.end());
of << " " << toHex(lit.cmp.begin(), lit.cmp.end());
of << " msk=0x" << toHex(lit.msk.begin(), lit.msk.end());
of << " cmp=0x" << toHex(lit.cmp.begin(), lit.cmp.end());
}
of << " groups=0x" << hex << setfill('0') << lit.groups << dec;
if (lit.noruns) {
of << " noruns";
}
of << endl;
// Second, literal rendered as a regex.
of << i << ":/" << toRegex(lit.s) << (lit.nocase ? "/i" : "/");
of << endl;
i++;
}
of.close();