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gfse: bug fix: avoid hickup when inhertiting from a missing concrete syntax

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hallgren
2012-03-05 20:47:52 +00:00
parent a55588aad5
commit 6ee74e5df5
1 changed files with 2 additions and 1 deletions
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src/www/gfse/editor.js
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@@ -1130,12 +1130,13 @@ function inherited_grammars(g) {
// Load the available grammars once // Load the available grammars once
var grammar_byname=cached_grammar_byname(); var grammar_byname=cached_grammar_byname();
var visited={}; var visited={};
function exists(g) { return g; }
// Then traverse the dependencies to collect all inherited grammars // Then traverse the dependencies to collect all inherited grammars
function ihgs(g) { function ihgs(g) {
if(visited[g.basename]) return []; // avoid cycles and diamonds if(visited[g.basename]) return []; // avoid cycles and diamonds
else { else {
visited[g.basename]=true; visited[g.basename]=true;
var igs=(g.extends || []).map(grammar_byname) var igs=(g.extends || []).map(grammar_byname).filter(exists);
var igss=igs.map(ihgs) var igss=igs.map(ihgs)
for(var i in igss) igs=igs.concat(igss[i]); for(var i in igss) igs=igs.concat(igss[i]);
return igs; return igs;