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* Caching of expression successors.

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This commit is contained in:
Eelco Dolstra 2003-07-04 12:18:06 +00:00
parent 40b5936691
commit 207ff2caf0
8 changed files with 145 additions and 43 deletions
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39
src/util.cc
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@ -36,7 +36,7 @@ string absPath(string path, string dir)
/* !!! canonicalise */
char resolved[PATH_MAX];
if (!realpath(path.c_str(), resolved))
throw SysError("cannot canonicalise path " + path);
throw SysError(format("cannot canonicalise path %1%") % path);
path = resolved;
}
return path;
@ -46,7 +46,8 @@ string absPath(string path, string dir)
string dirOf(string path)
{
unsigned int pos = path.rfind('/');
if (pos == string::npos) throw Error("invalid file name: " + path);
if (pos == string::npos)
throw Error(format("invalid file name: %1%") % path);
return string(path, 0, pos);
}
@ -54,7 +55,8 @@ string dirOf(string path)
string baseNameOf(string path)
{
unsigned int pos = path.rfind('/');
if (pos == string::npos) throw Error("invalid file name: " + path);
if (pos == string::npos)
throw Error(format("invalid file name %1% ") % path);
return string(path, pos + 1);
}
@ -63,7 +65,7 @@ void deletePath(string path)
{
struct stat st;
if (lstat(path.c_str(), &st))
throw SysError("getting attributes of path " + path);
throw SysError(format("getting attributes of path %1%") % path);
if (S_ISDIR(st.st_mode)) {
DIR * dir = opendir(path.c_str());
@ -79,11 +81,36 @@ void deletePath(string path)
}
if (remove(path.c_str()) == -1)
throw SysError("cannot unlink " + path);
throw SysError(format("cannot unlink %1%") % path);
}
static int nestingLevel = 0;
Nest::Nest(bool nest)
{
this->nest = nest;
if (nest) nestingLevel++;
}
Nest::~Nest()
{
if (nest) nestingLevel--;
}
void msg(const format & f)
{
string spaces;
for (int i = 0; i < nestingLevel; i++)
spaces += " ";
cerr << format("%1%%2%\n") % spaces % f.str();
}
void debug(const format & f)
{
cerr << format("debug: %1%\n") % f.str();
msg(format("debug: %1%") % f.str());
}