void AbstractUniform::update(Program * program)
{
assert(program != nullptr);
if (!program->isLinked())
{
return;
}
if (!m_cacheDSA) // TODO: move caching to a per context caching
{
m_cacheDSA = true;
m_directStateAccess = hasExtension(GLOW_EXT_direct_state_access);
}
if (m_directStateAccess)
{
setValueAt(program, locationFor(program));
}
else
{
program->use();
setValueAt(locationFor(program));
}
}
static bool nextDocToken(Token &x) {
x = Token();
const char *p = save();
for (;;) {
p = save();
if(!docSpace()) {
restore(p);
break;
}
}
if (docIsBlock) {
if (docEndBlock(x)) goto success;
} else {
if (docEndLine(x)) goto success;
}
restore(p); if (docProperty(x)) goto success;
restore(p); if (docText(x)) goto success;
if (p != end) {
pushLocation(locationFor(p));
error("invalid doc token");
}
return false;
success :
assert(x.tokenKind != T_NONE);
if (!x.location.ok())
x.location = locationFor(p);
return true;
}
static bool nextToken(Token &x) {
x = Token();
const char *p = save();
if (space(x)) goto success;
restore(p); if (docStartLine(x)) goto success;
restore(p); if (docStartBlock(x)) goto success;
restore(p); if (lineComment(x)) goto success;
restore(p); if (blockComment(x)) goto success;
restore(p); if (staticIndex(x)) goto success;
restore(p); if (opIdentifier(x)) goto success;
restore(p); if (symbol(x)) goto success;
restore(p); if (op(x)) goto success;
restore(p); if (llvmToken(x)) goto success;
restore(p); if (keywordIdentifier(x)) goto success;
restore(p); if (charToken(x)) goto success;
restore(p); if (stringToken(x)) goto success;
restore(p); if (floatToken(x)) goto success;
restore(p); if (intToken(x)) goto success;
if (p != end) {
pushLocation(locationFor(p));
error("invalid token");
}
return false;
success :
assert(x.tokenKind != T_NONE);
if (!x.location.ok())
x.location = locationFor(p);
return true;
}
static bool docProperty(Token &x) {
char c;
if (!next(c)) return false;
while (isSpace(c))
if (!next(c))
break;
if (c != '@') return false;
const char *begin = save();
while (!isSpace(c))
if (!next(c)) return false;
const char *end = save();
x = Token(T_DOC_PROPERTY, llvm::StringRef(begin, end - begin - 1));
x.location = locationFor(begin);
return true;
}
static bool llvmToken(Token &x) {
const char *prefix = "__llvm__";
while (*prefix) {
char c;
if (!next(c)) return false;
if (c != *prefix) return false;
++prefix;
}
const char *p = save();
while (true) {
char c;
if (!next(c)) return false;
if (!isSpace(c))
break;
p = save();
}
restore(p);
const char *begin = save();
if (!llvmBraces()) return false;
const char *end = save();
x = Token(T_LLVM, llvm::StringRef(begin, end-begin));
x.location = locationFor(begin);
return true;
}