mark(node) {
let loc = node.loc;
if (!loc) return; // no location info
let map = this.map;
if (!map) return; // no source map
if (t.isProgram(node) || t.isFile(node)) return; // illegal mapping nodes
let position = this.position;
let generated = {
line: position.line,
column: position.column
};
let original = loc.start;
// Avoid emitting duplicates on either side. Duplicated
// original values creates unnecesssarily large source maps
// and increases compile time. Duplicates on the generated
// side can lead to incorrect mappings.
if (comparePosition(original, this.last.original)
|| comparePosition(generated, this.last.generated)) {
return;
}
this.last = {
source: loc.filename || this.opts.sourceFileName,
generated: generated,
original: original
};
map.addMapping(this.last);
}
print(node, parent, opts = {}) {
if (!node) return;
this._lastPrintedIsEmptyStatement = false;
if (parent && parent._compact) {
node._compact = true;
}
let oldInAux = this.insideAux;
this.insideAux = !node.loc;
let oldConcise = this.format.concise;
if (node._compact) {
this.format.concise = true;
}
let printMethod = this[node.type];
if (!printMethod) {
throw new ReferenceError(`unknown node of type ${JSON.stringify(node.type)} with constructor ${JSON.stringify(node && node.constructor.name)}`);
}
this._printStack.push(node);
if (node.loc) this.printAuxAfterComment();
this.printAuxBeforeComment(oldInAux);
let needsParens = n.needsParens(node, parent, this._printStack);
if (needsParens) this.push("(");
this.printLeadingComments(node, parent);
this.catchUp(node);
this._printNewline(true, node, parent, opts);
if (opts.before) opts.before();
let loc = (t.isProgram(node) || t.isFile(node)) ? null : node.loc;
this.withSource("start", loc, () => {
this._print(node, parent);
});
// Check again if any of our children may have left an aux comment on the stack
if (node.loc) this.printAuxAfterComment();
this.printTrailingComments(node, parent);
if (needsParens) this.push(")");
// end
this._printStack.pop();
if (opts.after) opts.after();
this.format.concise = oldConcise;
this.insideAux = oldInAux;
this._printNewline(false, node, parent, opts);
}