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haskell.hiji.primitives.js
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haskell.hiji.primitives.js
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(function(primitives, ast, interpreter){
var showResult = function(result) {
if (result.type == "Data") {
var str = result.identifier;
var op = " ";
if (str == "I#") {
str = "";
} else if (str == ":") {
str = "";
op = ",";
}
if (result.ptrs) {
var first = true;
for (var i = 0; i < result.ptrs.length; i++) {
if (str.length == 0 && first) {
str = showResult(result.ptrs[i].dereference());
if (typeof str.str != "undefined")
str = str.str;
first = false;
} else {
var res = showResult(result.ptrs[i].dereference());
if (typeof res.str != "undefined")
res = res.str;
str = str + op + res;
}
}
}
return { str: str, isList: op == "," };
} if (result.force) {
return result.force();
} else if (result.ptrs) {
return result.ptrs[0].dereference();
} else {
return result;
}
};
primitives.initHiji = function(env) {
env.bind("hijiContinuation#", primitives.createPrimitive(env, 0,
function(env, args) {
return new interpreter.Data("IO", [new interpreter.HeapPtr(env)]);
}));
// hijiOutputLine# :: a -> IO ()
env.bind("hijiOutputLine#", primitives.createPrimitive(env, 1,
function(env, args) {
var arg = args[0];
var result = showResult(arg);
if (result.isList) {
result = result.str;
result = result.substring(0, result.length - 3);
result = "[" + result + "]";
} else if (typeof result.str != "undefined") {
result = result.str;
}
printArea.append($("<li class='output'></li>").text(result.toString()));
return new interpreter.Data("IO", [new interpreter.HeapPtr(new interpreter.Closure(env, new ast.VariableLookup("()")))]);
}));
};
})(haskell.primitives, haskell.ast, haskell.interpreter);