added glob targets, closes #3

Build.moon

@@ -8,8 +8,6 @@ OUT_C        = patsubst MAIN, '%.moon', '%.lua.c'
 PREFIX       = env 'PREFIX', '/usr/local'
 INSTALL_LOC  = "#{PREFIX}/bin"
 
-default public target 'all', deps: BINARY
-
 public target 'install', from: BINARY, out: INSTALL_LOC, fn: =>
 	-install @infile, @outfile
 
@@ -25,10 +23,8 @@ public target 'info', fn: =>
 	#echo "Compiled lua:", OUT_LUA
 	#echo "Binary:", BINARY
 
-target BINARY, out: {BINARY, OUT_C}, from: OUT_LUA, fn: =>
+default target BINARY, out: {BINARY, OUT_C}, from: OUT_LUA, fn: =>
 	-luastatic MAIN_LUA, OUT_LUA, '-I/usr/include/lua5.3', '-llua5.3'
 
-foreach OUT_LUA, (file) ->
+target '%.lua', in: '%.moon', out: '%.lua', fn: =>
-	source=patsubst file, '%.lua', '%.moon'
+	-moonc @infile
-	target file, in: source, out: file, fn: =>
-		-moonc @infile

README.md

@@ -30,6 +30,10 @@ Define a new target, and give it a list of depenancies, inputs, outputs and a fu
 - `outs`: the table of outputs
 - `outfile`: the first output
 
+If `name` is a glob, the target becomes a glob target.
+Glob targets can be used with name that matches them (with a limit of one glob target per name, and no ordering is specified).
+Glob targets will have their name substituted for their inputs, outputs and dependancies.
+
 ### `wildcard <wc>`
 Returns a table with all the matching files. Valid wildcards contain either `**`, which can be expanded by any characters, including '/', or `*`, which cannot be expanded by `/`. Wildcards can only contain one `**` or `*`.
 

moonbuild.moon

@@ -8,7 +8,7 @@ import truncate_traceback, rewrite_traceback from require 'moonscript.errors'
 import trim from require 'moonscript.util'
 
 util=require 'util'
-import exists, mtime, run, min, max, first, flatten from util
+import exists, mtime, run, min, max, first, flatten, match, patsubst from util
 
 import insert, concat from table
 
@@ -47,42 +47,76 @@ class Command
 -- represents a target
 class BuildObject
 	all={}
+	skip={}
+	cycle={}
+
+	@find: (name) =>
+		target=all[name]
+		return target if target
+		for glob, tgt in pairs all
+			return tgt if match name, glob
+		nil
+
 
 	@build: (name) =>
-		target=all[name] or error "No such target: #{name}"
+		target=@find name or error "No such target: #{name}"
-		target\build!
+		target\build name
+
+	__tostring: =>
+		"Target #{@name} (#{concat @deps, ', '})"
 
 	new: (@name, @outs={}, @ins={}, @deps={}, @fn= =>) =>
 		@skip=false
 		error "Duplicate build name #{@name}" if all[@name]
 		all[@name]=@
 
-	build: =>
+	build: (name) =>
-		return if @skip
+		return if skip[name]
-		error "Can't build #{@name}: cyclic dependancy" if @cycle
+		error "Can't build #{name}: cyclic depenancies found" if cycle[name]
-		@cycle=true
+		cycle[name]=true
-		for depname in *@deps
+		if @name!=name
-			dep=all[depname] or error "Can't build #{@name}: missing dependancy #{depname}"
+			@@build patsubst name, @name, dep for dep in *@deps
-			dep\build!
+		else
-		return unless @shouldbuild!
+			@@build dep for dep in *@deps
-
+		return unless @shouldbuild name
-		print "Building #{@name}"
+
+		ins=@ins
+		outs=@outs
+		if @name!=name
+			ins=[patsubst name, @name, elem for elem in *@ins]
+			outs=[patsubst name, @name, elem for elem in *@outs]
+			print "Building #{@name} as #{name}"
+		else
+			print "Building #{name}"
 		ok, err=pcall ->
-			@.fn ins: @ins, outs: @outs, infile: @ins[1], outfile: @outs[1], name: @name
+			@.fn
+				ins: ins
+				outs: outs
+				infile: ins[1]
+				outfile: outs[1]
+				name: name
 		error "Can't build #{@name}: lua error\n#{err}" unless ok
-		for f in *@outs
+		for f in *outs
 			error "Can't build #{@name}: output file #{f} not created" unless exists f
-		@skip=true
+		skip[name]=true
 
-	shouldbuild: =>
+	shouldbuild: (name) =>
 		return true if args.noskip
 		return true if #@ins==0 or #@outs==0
 
-		itimes=[mtime f for f in *@ins]
+		ins=if @name!=name
+			[patsubst name, @name, elem for elem in *@ins]
+		else
+			@ins
+		itimes=[mtime f for f in *ins]
 		for i=1, #@ins
 			error "Can't build #{@name}: missing inputs" unless itimes[i]
 
-		otimes=[mtime f for f in *@outs]
+		outs=if @name!=name
+			[patsubst name, @name, elem for elem in *@outs]
+		else
+			@outs
+		otimes=[mtime f for f in *outs]
 		for i=1, #@outs
 			return true if not otimes[i]
 

util.moon

@@ -3,6 +3,8 @@ import attributes, dir from require 'lfs'
 import insert, concat from table
 unpack or=table.unpack
 
+GLOB_PATT='^([^%%]*)%%([^%%]*)$'
+
 -- min and max of table
 max= (t) ->
 	m=t[1]
@@ -109,15 +111,29 @@ wildcard= (pattern) ->
 -- string pattern
 patsubst= (str, pattern, replacement) ->
 	return [patsubst s, pattern, replacement for s in *str] if (type str)=='table'
-	prefix, suffix=pattern\match '^(.*)%%(.*)$'
+	prefix, suffix=pattern\match GLOB_PATT
-	error "Invalid pattern #{pattern}" unless prefix
+	return str unless prefix
-	reprefix, resuffix=replacement\match '^(.*)%%(.*)$'
+	reprefix, resuffix=replacement\match GLOB_PATT
-	error "Invalid replacement pattern #{pattern}" unless reprefix
+	return replacement unless reprefix
 
 	if (str\sub 1, #prefix)==prefix and (str\sub -#suffix)==suffix
 		return reprefix..(str\sub #prefix+1, -#suffix-1)..resuffix
 	str
 
+-- glob match
+match= (str, glob) ->
+	prefix, suffix=glob\match GLOB_PATT
+	return str==glob unless prefix
+	return str\sub #prefix+1, -#suffix-1 if (str\sub 1, #prefix)==prefix and (str\sub -#suffix)==suffix
+	false
+
+-- is a valid glob
+isglob= (glob) ->
+	return if glob\match GLOB_PATT
+		true
+	else
+		false
+
 env= (key, def) ->
 	(os.getenv key) or def
 
@@ -138,6 +154,6 @@ env= (key, def) ->
 	:run, :popen
 
 	-- string functions
-	:patsubst
+	:patsubst, :match, :isglob
 	:env
 }