X-Git-Url: http://nitlanguage.org

diff --git a/src/phase.nit b/src/phase.nit
index df72660..502d817 100644
--- a/src/phase.nit
+++ b/src/phase.nit
@@ -21,7 +21,7 @@ import poset
 
 redef class ToolContext
 	# The various registered phases to performs
-	# The order in the poset is the dependance of phases
+	# The order in the poset is the dependence of phases
 	#
 	# While you can directly modify the poset (nodes and edges),
 	# it is often simpler to use the constructor in `Phase`
@@ -30,11 +30,14 @@ redef class ToolContext
 	# --disable-phase
 	var opt_disable_phase = new OptionArray("DEBUG: Disable a specific phase; use `list` to get the list.", "--disable-phase")
 
+	# --disable-phase
+	var opt_sloppy = new OptionBool("DEBUG: force lazy semantic analysis of the source-code", "--sloppy")
+
 	redef init
 	do
 		super
 
-		option_context.add_option(opt_disable_phase)
+		option_context.add_option(opt_disable_phase, opt_sloppy)
 	end
 
 	redef fun process_options(args)
@@ -62,15 +65,24 @@ redef class ToolContext
 			end
 			if not found then fatal_error(null, "Error: no phase named `{v}`. Use `list` to list all phases.")
 		end
+
+		if opt_sloppy.value then semantize_is_lazy = true
 	end
 
-	fun phases_list: Sequence[Phase]
-	do
+	# The list of registered phases in the application order.
+	var phases_list: Sequence[Phase] is lazy do
 		var phases = self.phases.to_a
 		self.phases.sort(phases)
 		return phases
 	end
 
+	# Is `phase_process_npropdef` not called automatically by `run_phases`?
+	#
+	# When set to true, it is the responsibility of the tools
+	#
+	# Is false by default.
+	var semantize_is_lazy = false is writable
+
 	# Set of already analyzed modules.
 	private var phased_modules = new HashSet[AModule]
 
@@ -98,7 +110,6 @@ redef class ToolContext
 
 			for phase in phases do
 				if phase.disabled then continue
-				self.info(" phase: {phase}", 3)
 				assert phase.toolcontext == self
 				var errcount = self.error_count
 				phase.process_nmodule(nmodule)
@@ -110,9 +121,9 @@ redef class ToolContext
 				for nclassdef in nmodule.n_classdefs do
 					assert phase.toolcontext == self
 					phase.process_nclassdef(nclassdef)
-					for npropdef in nclassdef.n_propdefs do
+					if not semantize_is_lazy then for npropdef in nclassdef.n_propdefs do
 						assert phase.toolcontext == self
-						phase.process_npropdef(npropdef)
+						phase_process_npropdef(phase, npropdef)
 					end
 				end
 				if errcount != self.error_count then
@@ -120,7 +131,10 @@ redef class ToolContext
 					break
 				end
 				for na in vannot.annotations do
-					phase.process_annotated_node(na.parent.parent.as(not null), na)
+					var p = na.parent
+					if p isa AAnnotations then p = p.parent
+					assert p != null
+					phase.process_annotated_node(p, na)
 				end
 				if errcount != self.error_count then
 					self.check_errors
@@ -132,9 +146,43 @@ redef class ToolContext
 
 		var time1 = get_time
 		self.info("*** END SEMANTIC ANALYSIS: {time1-time0} ***", 2)
+
+		self.check_errors
+	end
+
+	# Process the given `phase` on the `npropdef`
+	# Called by `run_phases`
+	protected fun phase_process_npropdef(phase: Phase, npropdef: APropdef)
+	do
+		phase.process_npropdef(npropdef)
+	end
+
+	# Run the phase on the given npropdef.
+	# Does nothing if `semantize_is_lazy` is false.
+	fun run_phases_on_npropdef(npropdef: APropdef)
+	do
+		if not semantize_is_lazy then return
+		if npropdef.is_phased then return
+		npropdef.is_phased = true
+
+		#self.info("Semantic analysis of property {npropdef.location.file.filename}", 0)
+
+		var phases = phases_list
+		for phase in phases do
+			if phase.disabled then continue
+			assert phase.toolcontext == self
+			phase_process_npropdef(phase, npropdef)
+			self.check_errors
+		end
 	end
 end
 
+redef class APropdef
+	# Is the propdef already analyzed by `run_phases_on_npropdef`.
+	# Unused unless `semantize_is_lazy` is true.
+	private var is_phased = false
+end
+
 # Collect all annotation
 private class AnnotationPhaseVisitor
 	super Visitor
@@ -156,13 +204,16 @@ abstract class Phase
 	var toolcontext: ToolContext
 
 	# The dependence relation of the phase with the other phases
-	var in_hierarchy: POSetElement[Phase]
+	var in_hierarchy: POSetElement[Phase] is noinit
+
+	# The explicit dependences, used to initialize `in_importation`
+	var depends: nullable Collection[Phase]
 
 	# Initialize and register a phase to the toolcontext
-	init(toolcontext: ToolContext, depends: nullable Collection[Phase])
+	init
 	do
-		self.toolcontext = toolcontext
 		in_hierarchy = toolcontext.phases.add_node(self)
+		var depends = self.depends
 		if depends != null then
 			for d in depends do
 				toolcontext.phases.add_edge(self, d)
@@ -175,7 +226,9 @@ abstract class Phase
 
 	# Is the phase globally disabled?
 	# A disabled phase is not called automatically called by `ToolContext::run_phases` and cie.
-	var disabled = false
+	#
+	# Warning: disabling a phase may cause subsequent phases to work in a degraded way or to fail.
+	var disabled = false is writable
 
 	# Specific actions to execute on the whole tree of a module
 	# @toimplement