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gfse: some refactoring

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hallgren
2012-10-03 13:22:50 +00:00
parent 432a354b91
commit edc51c6a2f
4 changed files with 38 additions and 44 deletions
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28
src/www/gfse/gf_abs.js
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@@ -71,7 +71,7 @@ function all_inherited_funs(igs,df) {
}
// Return the index of the function the given name in the abstract syntax
// find_function :: Grammar -> FunId -> (Int|null)
// fun_index :: Grammar -> FunId -> (Int|null)
function fun_index(g,fun) {
with(g.abstract)
for(var i in funs) if(funs[i].name==fun) return i
@@ -93,10 +93,18 @@ function cat_lincat(conc,cat) {
return null;
}
// Return the index of the lin in a given concrete syntax for an abstract function
// lin_index :: Concrete -> FunId -> (Int|null)
function lin_index(conc,fun) {
with(conc) for(var i in lins) if(lins[i].fun==fun) return i
return null;
}
// Return the lin defined in a given concrete syntax for an abstract function
// fun_lin :: Concrete -> FunId -> (Lin|null)
function fun_lin(conc,fun) {
with(conc) for(var i in lins) if(lins[i].fun==fun) return lins[i]
var i=lin_index(conc,fun)
if(i!=null) return conc.lins[i]
return null;
}
@@ -138,25 +146,21 @@ function rename_category(g,oldcat,newcat) {
return g;
}
// rename_function :: Grammar -> Id -> Id -> Grammar // destructive update
// rename_function :: Grammar -> FunId -> FunId -> Grammar // destructive update
function rename_function(g,oldfun,newfun) {
function rename_lin(lin) {
if(lin.fun==oldfun) lin.fun=newfun;
}
function rename_concrete(c) {
for(var i in c.lins) rename_lin(c.lins[i]);
var i=lin_index(c,oldfun)
if(i!=null) c.lins[i].fun=newfun;
}
for(var i in g.concretes) rename_concrete(g.concretes[i]);
return g;
}
// change_lin_lhs :: Grammar -> Id -> Grammar // destructive update
// change_lin_lhs :: Grammar -> Fun -> Grammar // destructive update
function change_lin_lhs(g,fun) {
function change_lin(lin) {
if(lin.fun==fun.name) lin.args=arg_names(fun.type);
}
function change_concrete(c) {
for(var i in c.lins) change_lin(c.lins[i]);
var i=lin_index(c,fun.name)
if(i!=null) c.lins[i].args=arg_names(fun.type);
}
for(var i in g.concretes) change_concrete(g.concretes[i]);
return g;