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/*****
* envcompleter.cc
* Andy Hammerlindl 2006/07/31
*
* Implements a text completion function for readline based on symbols in the
* environment.
*****/
#include <fstream>
#include "table.h"
#include "envcompleter.h"
namespace trans {
bool basicListLoaded=false;
envCompleter::symbol_list basicList;
static void loadBasicList() {
assert(basicListLoaded==false);
#define ADD(word) basicList.push_back(symbol::literalTrans(#word))
#include "keywords.cc"
#undef ADD
basicListLoaded=true;
}
void envCompleter::basicCompletions(symbol_list &l, string start) {
if (!basicListLoaded)
loadBasicList();
for (symbol_list::iterator p = basicList.begin(); p != basicList.end(); ++p)
if (prefix(start, *p))
l.push_back(*p);
}
void envCompleter::makeList(const char *text) {
l.clear();
basicCompletions(l, text);
e.completions(l, text);
index=l.begin();
}
char *envCompleter::operator () (const char *text, int state) {
if (state==0)
makeList(text);
if (index==l.end())
return 0;
else {
symbol name=*index;
++index;
return StrdupMalloc((string)name);
}
}
} // namespace trans
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