Mercurial > public > mercurial-scm > hg-stable
diff mercurial/templater.py @ 34535:78590585c0db
templater: add dot operator to easily access a sub item
This and the next patch will allow us to access a deeply-nested item
by foo.bar.baz syntax.
| author | Yuya Nishihara <yuya@tcha.org> |
|---|---|
| date | Sat, 09 Sep 2017 19:32:56 +0900 |
| parents | b3073e175c17 |
| children | 4c1cfe54c08d |
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--- a/mercurial/templater.py Sat Sep 09 19:13:25 2017 +0900 +++ b/mercurial/templater.py Sat Sep 09 19:32:56 2017 +0900 @@ -35,6 +35,7 @@ elements = { # token-type: binding-strength, primary, prefix, infix, suffix "(": (20, None, ("group", 1, ")"), ("func", 1, ")"), None), + ".": (18, None, None, (".", 18), None), "%": (15, None, None, ("%", 15), None), "|": (15, None, None, ("|", 15), None), "*": (5, None, None, ("*", 5), None), @@ -60,7 +61,7 @@ c = program[pos] if c.isspace(): # skip inter-token whitespace pass - elif c in "(=,)%|+-*/": # handle simple operators + elif c in "(=,).%|+-*/": # handle simple operators yield (c, None, pos) elif c in '"\'': # handle quoted templates s = pos + 1 @@ -450,6 +451,26 @@ # If so, return the expanded value. yield v +def buildmember(exp, context): + darg = compileexp(exp[1], context, methods) + memb = getsymbol(exp[2]) + return (runmember, (darg, memb)) + +def runmember(context, mapping, data): + darg, memb = data + d = evalrawexp(context, mapping, darg) + if util.safehasattr(d, 'tomap'): + lm = mapping.copy() + lm.update(d.tomap()) + return runsymbol(context, lm, memb) + # TODO: d.get(memb) if dict-like? + + sym = findsymbolicname(darg) + if sym: + raise error.ParseError(_("keyword '%s' has no member") % sym) + else: + raise error.ParseError(_("%r has no member") % d) + def buildnegate(exp, context): arg = compileexp(exp[1], context, exprmethods) return (runnegate, arg) @@ -1152,7 +1173,7 @@ "symbol": lambda e, c: (runsymbol, e[1]), "template": buildtemplate, "group": lambda e, c: compileexp(e[1], c, exprmethods), -# ".": buildmember, + ".": buildmember, "|": buildfilter, "%": buildmap, "func": buildfunc,