See the example from Hayes 1995 (Metrical Stress Theory): 
I don't need to exactly replicate his notation, but I'd like a way in Sharelatex (preferably using the standard compiler) to make a similarly compact and readable one-line analysis of syllable weight and stress.
His notation uses one character per syllable, with a big macron for a heavy syllable, a big breve for a light one, and grave and acute accents for primary and secondary stress. Any other notation that's generally readable would do as well, but I don't want to break all my existing Sharelatex document by changing compiler if possible. Hopefully there's a notation and a package that's in common usage.
If I must change compiler, please tell me what packages I'd have to remove and add to my document.

metrixpackage give the sort of output you want? – Thérèse Jun 08 '16 at 02:43I just looked at metrix (new to me) and it's awesome and well-suited, except for the lack of accents on top of the long/short markers. It does have the ability to redefine an 'arrow' character above the markers, so theoretically it could be used with the 'arrow' redefined as an acute accent for most of my work.
– Steve Rapaport Jun 08 '16 at 16:21