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glhr:: a more efficient stringbuilder (previous version caused stack overflow in web)

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This commit is contained in:
Zeno Rogue 2019-10-12 11:21:29 +02:00
parent adee8aa699
commit 54a9345777
1 changed files with 13 additions and 7 deletions
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20
shaders.cpp
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@ -412,13 +412,19 @@ GLprogram *programs[gmMAX][int(shader_projection::MAX)];
string stringbuilder() { return ""; }
template<class... T> string stringbuilder(bool i, const string& s, T... t) {
if(i) return s +
#if DEBUG_GL
"\n" +
#endif
stringbuilder(t...);
else return stringbuilder(t...);
bool use_next = false;
int stringbuilder_helper(string& output, bool i) { use_next = i; return 0; }
int stringbuilder_helper(string& output, const char *s) { if(use_next) output += s; return 0; }
int stringbuilder_helper(string& output, const string& s) { if(use_next) output += s; return 0; }
template<class... T> string stringbuilder(T... t) {
use_next = true;
string output;
std::initializer_list<int> dummy = {stringbuilder_helper(output, t)...};
ignore(dummy);
println(hlog, "output = '", output, "'");
return output;
}
glmatrix current_matrix, current_modelview, current_projection;