#!/usr/bin/python3

import io
import re

definitionSet = set()
definitionToSourceLocationMap = dict()
overridingSet = set()
nonEmptySet = set()


with io.open("workdir/loplugin.unnecessaryvirtual.log", "r", buffering=1024*1024) as txt:
    for line in txt:
        tokens = line.strip().split("\t")
        if tokens[0] == "definition:":
            fullMethodName = tokens[1]
            sourceLocation = tokens[2]
            definitionSet.add(fullMethodName)
            definitionToSourceLocationMap[fullMethodName] = sourceLocation
        elif tokens[0] == "overriding:":
            fullMethodName = tokens[1]
            overridingSet.add(fullMethodName)
        elif tokens[0] == "nonempty:":
            fullMethodName = tokens[1]
            nonEmptySet.add(fullMethodName)
        else:
            print( "unknown line: " + line)

unnecessaryVirtualSet = set()

for clazz in (definitionSet - overridingSet):
    # windows-specific stuff
    if clazz.startswith("canvas::"):
        continue
    if clazz.startswith("psp::PrinterInfoManager"):
        continue
    if clazz.startswith("DdeTopic::"):
        continue
    if clazz == "basegfx::unotools::UnoPolyPolygon::void-modifying()const":
        continue
    if clazz == "SalLayout::_Bool-IsKashidaPosValid(int,)const":
        continue
    if clazz == "SalLayout::void-DisableGlyphInjection(_Bool,)":
        continue
    # Linux-TDF specific
    if clazz == "X11SalFrame::void-updateGraphics(_Bool,)":
        continue
    # OSX specific
    if clazz == "SalFrame::void-SetRepresentedURL(const class rtl::OUString &,)":
        continue
    if clazz == "SalMenu::_Bool-AddMenuBarButton(const struct SalMenuButtonItem &,)":
        continue
    if clazz == "SalMenu::class Rectangle-GetMenuBarButtonRectPixel(sal_uInt16,class SalFrame *,)":
        continue
    if clazz == "SalMenu::void-RemoveMenuBarButton(sal_uInt16,)":
        continue
    if clazz == "SalLayout::_Bool-DrawTextSpecial(class SalGraphics &,sal_uInt32,)const":
        continue
    # GTK < 3
    if clazz == "GtkSalDisplay::int-CaptureMouse(class SalFrame *,)":
        continue
    # some test magic
    if clazz.startswith("apitest::"):
        continue

    loc = definitionToSourceLocationMap[clazz]

    # ignore external code
    if loc.startswith("external/"):
        continue
    if loc.startswith("workdir/"):
        continue
    if loc.startswith("64-linux-gnu/"):
        continue
    # there is a bunch of Windows specific code that we don't see
    if loc.startswith("include/canvas/"):
        continue
    # not sure what the problem is here
    if loc.startswith("include/test/"):
        continue

    unnecessaryVirtualSet.add( (clazz,loc) )


deadSet = set()

for clazz in (definitionSet - nonEmptySet):

    # ignore destructors
    if "::~" in clazz:
        continue

    loc = definitionToSourceLocationMap[clazz]

    # ignore external code
    if loc.startswith("external/"):
        continue
    if loc.startswith("workdir/"):
        continue
    if loc.startswith("64-linux-gnu/"):
        continue

    deadSet.add( (clazz,loc) )


# sort the results using a "natural order" so sequences like [item1,item2,item10] sort nicely
def natural_sort_key(s, _nsre=re.compile('([0-9]+)')):
    return [int(text) if text.isdigit() else text.lower()
            for text in re.split(_nsre, s)]
# sort by both the source-line and the datatype, so the output file ordering is stable
# when we have multiple items on the same source line
def v_sort_key(v):
    return natural_sort_key(v[1]) + [v[0]]

# sort results by name and line number
tmp1list = sorted(unnecessaryVirtualSet, key=lambda v: v_sort_key(v))
tmp2list = sorted(deadSet, key=lambda v: v_sort_key(v))

with open("compilerplugins/clang/unnecessaryvirtual.results", "wt") as f:
    for t in tmp1list:
        f.write( t[1] + "\n" )
        f.write( "    " + t[0] + "\n" )
    # add an empty line at the end to make it easier for the removevirtuals plugin to mmap() the output file
    f.write("\n")

with open("compilerplugins/clang/unnecessaryvirtual-dead.results", "wt") as f:
    for t in tmp2list:
        f.write( t[1] + "\n" )
        f.write( "    " + t[0] + "\n" )