#!/usr/bin/env python3
# HFacer.py - regenerate the Scintilla.h and SciLexer.h files from the Scintilla.iface interface
# definition file.
# Implemented 2000 by Neil Hodgson neilh@scintilla.org
# Requires Python 3.6 or later

import pathlib
import Face
import FileGenerator

def printHFile(f):
	out = []
	previousCategory = ""
	anyProvisional = False
	for name in f.order:
		v = f.features[name]
		if v["Category"] != "Deprecated":
			if v["Category"] == "Provisional" and previousCategory != "Provisional":
				out.append("#ifndef SCI_DISABLE_PROVISIONAL")
				anyProvisional = True
			previousCategory = v["Category"]
			if v["FeatureType"] in ["fun", "get", "set"]:
				featureDefineName = "SCI_" + name.upper()
				out.append("#define " + featureDefineName + " " + v["Value"])
			elif v["FeatureType"] in ["evt"]:
				featureDefineName = "SCN_" + name.upper()
				out.append("#define " + featureDefineName + " " + v["Value"])
			elif v["FeatureType"] in ["val"]:
				out.append("#define " + name + " " + v["Value"])
	if anyProvisional:
		out.append("#endif")
	return out

showUnused = False

def RegenerateAll(root, showMaxID):
	f = Face.Face()
	f.ReadFromFile(root / "include/Scintilla.iface")
	FileGenerator.Regenerate(root / "include/Scintilla.h", "/* ", printHFile(f))
	if showMaxID:
		valueSet = set(int(x) for x in f.values if int(x) < 3000)
		maximumID = max(valueSet)
		print("Maximum ID is %d" % maximumID)
		if showUnused:
			valuesUnused = sorted(x for x in range(2001,maximumID) if x not in valueSet)
			print("\nUnused values")
			valueToName = {}
			for name, feature in f.features.items():
				try:
					value = int(feature["Value"])
					valueToName[value] = name
				except ValueError:
					pass
			for v in valuesUnused:
				prev = valueToName.get(v-1, "")
				print(v, prev)

if __name__ == "__main__":
	RegenerateAll(pathlib.Path(__file__).resolve().parent.parent, True)