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Implemented ability to exclude code from coverage. #460

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Implemented ability to exclude code from coverage. #460

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31 changes: 28 additions & 3 deletions src/blanket.js
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Original file line number Diff line number Diff line change
Expand Up @@ -55,6 +55,28 @@ var parseAndModify = (inBrowser ? window.falafel : require("falafel"));
__blanket = window.blanket.noConflict();
}

var shouldIgnore = false;

var checkLeadingComments = function(node) {
var comments = node.leadingComments,
comment;

if (!comments) {
return;
}

for (var i = 0, length = comments.length; i < length; i++) {
comment = comments[i];

if (comment.value === "blanketjs:ignore true") {
shouldIgnore = true;
}
else if (comment.value === "blanketjs:ignore false") {
shouldIgnore = false;
}
}
};

_blanket = {

noConflict: function() {
Expand Down Expand Up @@ -131,7 +153,8 @@ var parseAndModify = (inBrowser ? window.falafel : require("falafel"));

var instrumented = parseAndModify(inFile, {
loc: true,
comment: true
comment: true,
attachComment: true
}, _blanket._addTracking(inFileName));

instrumented = _blanket._trackingSetup(inFileName, sourceArray) + instrumented;
Expand Down Expand Up @@ -273,8 +296,10 @@ var parseAndModify = (inBrowser ? window.falafel : require("falafel"));
}

if (node.loc && node.loc.start) {
node.update(covVar + "['" + filename + "'][" + node.loc.start.line + "]++;\n" + node.source());
_blanket._trackingArraySetup.push(node.loc.start.line);
if (!shouldIgnore) {
node.update(covVar + "['" + filename + "'][" + node.loc.start.line + "]++;\n" + node.source());
_blanket._trackingArraySetup.push(node.loc.start.line);
}
} else {
//I don't think we can handle a node with no location
throw new Error("The instrumenter encountered a node with no location: " + Object.keys(node));
Expand Down