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Weak table implementation.

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This commit is contained in:
James Roseborough
2008-04-08 21:55:16 +00:00
parent 720c6027d6
commit 09aa37a837
14 changed files with 501 additions and 270 deletions
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123
src/test/res/table.lua
View File

@@ -18,69 +18,70 @@ tryconcat( { a='aaa', b='bbb', c='ccc', d='ddd', e='eee' } )
tryconcat( { [501]="one", [502]="two", [503]="three", [504]="four", [505]="five" } )
tryconcat( {} )
-- print the elements of a table in a platform-independent way
function eles(t,f)
f = f or pairs
all = {}
for k,v in f(t) do
table.insert( all, "["..tostring(k).."]="..tostring(v) )
end
table.sort( all )
return "{"..table.concat(all,',').."}"
end
-- insert, maxn
print( '-- insert, maxn tests' )
local t = { "one", "two", "three", a='aaa', b='bbb', c='ccc' }
print( table.concat(t,'-'), table.maxn(t), #t, table.getn(t) )
table.insert(t,'six')
print( table.concat(t,'-'), table.maxn(t), #t, table.getn(t) )
table.insert(t,1,'seven')
print( table.concat(t,'-'), table.maxn(t), #t, table.getn(t) )
table.insert(t,4,'eight')
print( table.concat(t,'-'), table.maxn(t), #t, table.getn(t) )
table.insert(t,7,'nine')
print( table.concat(t,'-'), table.maxn(t), #t, table.getn(t) )
table.insert(t,10,'ten')
print( table.concat(t,'-'), table.maxn(t), #t, table.getn(t) )
print( t[10] )
print( table.maxn({}), #{} )
print( eles(t) )
table.insert(t,'six'); print( eles(t) )
table.insert(t,1,'seven'); print( eles(t) )
table.insert(t,4,'eight'); print( eles(t) )
table.insert(t,7,'nine'); print( eles(t) )
table.insert(t,10,'ten'); print( eles(t) )
-- remove
print( '-- remove tests' )
t = { "one", "two", "three", "four", "five", "six", "seven", [10]="ten", a='aaa', b='bbb', c='ccc' }
print( table.concat(t,'-'), table.maxn(t), #t )
print( table.remove(t) )
print( table.concat(t,'-'), table.maxn(t) )
print( table.remove(t,1) )
print( table.concat(t,'-'), table.maxn(t) )
print( table.remove(t,3) )
print( table.concat(t,'-'), table.maxn(t) )
print( table.remove(t,5) )
print( table.concat(t,'-'), table.maxn(t), t[10] )
print( table.remove(t,10) )
print( table.concat(t,'-'), table.maxn(t), t[10] )
print( table.remove(t,-1) )
print( table.concat(t,'-'), table.maxn(t), t[10] )
print( table.remove(t,-1) )
print( table.concat(t,'-'), table.maxn(t), t[10] )
print( eles(t) )
print( 'table.remove(t)', table.remove(t) ); print( eles(t) )
print( 'table.remove(t,1)', table.remove(t,1) ); print( eles(t) )
print( 'table.remove(t,3)', table.remove(t,3) ); print( eles(t) )
print( 'table.remove(t,5)', table.remove(t,5) ); print( eles(t) )
print( 'table.remove(t,10)', table.remove(t,10) ); print( eles(t) )
print( 'table.remove(t,-1)', table.remove(t,-1) ); print( eles(t) )
print( 'table.remove(t,-1)', table.remove(t,-1) ) ; print( eles(t) )
-- sort
print( '-- sort tests' )
t = { "one", "two", "three", a='aaa', b='bbb', c='ccc' }
print( table.concat(t,'-'), table.maxn(t), #t )
table.sort(t)
print( table.concat(t,'-'), table.maxn(t), #t )
t = { "zzz", "yyy", "xxx", "www", "vvv", "uuu", "ttt", "sss" }
print( table.concat(t,'-'), table.maxn(t), #t )
table.sort(t)
print( table.concat(t,'-'), table.maxn(t), #t )
table.sort(t,function(a,b) return b<a end)
print( table.concat(t,'-'), table.maxn(t), #t )
function sorttest(t,f)
t = (t)
print( table.concat(t,'-') )
if f then
table.sort(t,f)
else
table.sort(t)
end
print( table.concat(t,'-') )
end
sorttest{ "one", "two", "three" }
sorttest{ "www", "vvv", "uuu", "ttt", "sss", "zzz", "yyy", "xxx" }
sorttest( { "www", "vvv", "uuu", "ttt", "sss", "zzz", "yyy", "xxx" }, function(a,b) return b<a end)
-- getn
t0 = {}
t1 = { 'one', 'two', 'three' }
t2 = { a='aa', b='bb', c='cc' }
t3 = { 'one', 'two', 'three', a='aa', b='bb', c='cc' }
print( 'getn(t0)', pcall( table.getn, t0 ) )
print( 'getn(t0)', pcall( table.getn, t1 ) )
print( 'getn(t0)', pcall( table.getn, t2 ) )
print( 'getn(t0)', pcall( table.getn, t3 ) )
print( 'getn('..eles(t0)..')', pcall( table.getn, t0 ) )
print( 'getn('..eles(t1)..')', pcall( table.getn, t1 ) )
print( 'getn('..eles(t2)..')', pcall( table.getn, t2 ) )
print( 'getn('..eles(t3)..')', pcall( table.getn, t3 ) )
-- foreach
function test( f, t, result, name )
status, value = pcall( f, t, function(...)
print(name,...)
print(' -- ',...)
print(' next',next(t,(...)))
return result
end )
print( name, 's,v', status, value )
@@ -90,12 +91,32 @@ function testall( f, t, name )
test( f, t, false, name..'fls' )
test( f, t, 100, name..'100' )
end
testall( table.foreach, t0, 'table.foreach(t0)' )
testall( table.foreach, t1, 'table.foreach(t1)' )
testall( table.foreach, t2, 'table.foreach(t2)' )
testall( table.foreach, t3, 'table.foreach(t3)' )
testall( table.foreachi, t0, 'table.foreachi(t0)' )
testall( table.foreachi, t1, 'table.foreachi(t1)' )
testall( table.foreachi, t2, 'table.foreachi(t2)' )
testall( table.foreachi, t3, 'table.foreachi(t3)' )
testall( table.foreach, t0, 'table.foreach('..eles(t0)..')' )
testall( table.foreach, t1, 'table.foreach('..eles(t1)..')' )
testall( table.foreach, t2, 'table.foreach('..eles(t2)..')' )
testall( table.foreach, t3, 'table.foreach('..eles(t3)..')' )
testall( table.foreachi, t0, 'table.foreachi('..eles(t0)..')' )
testall( table.foreachi, t1, 'table.foreachi('..eles(t1)..')' )
testall( table.foreachi, t2, 'table.foreachi('..eles(t2)..')' )
testall( table.foreachi, t3, 'table.foreachi('..eles(t3)..')' )
-- pairs, ipairs
function testpairs(f, t, name)
print( name )
for a,b in f(t) do
print( ' ', a, b )
end
end
function testbothpairs(t)
testpairs( pairs, t, 'pairs( '..eles(t)..' )' )
testpairs( ipairs, t, 'ipairs( '..eles(t)..' )' )
end
for i,t in ipairs({t0,t1,t2,t3}) do
testbothpairs(t)
end
t = { 'one', 'two', 'three', 'four', 'five' }
testbothpairs(t)
t[6] = 'six'
testbothpairs(t)
t[4] = nil
testbothpairs(t)

143
src/test/res/weaktable.lua
View File

@@ -1,12 +1,14 @@
-- concat
print( '-- weak table tests' )
-- construct new weak table
function newweak(t)
return setmetatable(t,{__mode="v"})
function newtable(t)
n = setmetatable(t,{__mode="v"})
for k,v in pairs(t) do
n[k] = v
end
return n;
end
-- print the elements of a table in a platform-independent way
-- normalized printing
function eles(t,f)
f = f or pairs
all = {}
@@ -14,12 +16,47 @@ function eles(t,f)
table.insert( all, "["..tostring(k).."]="..tostring(v) )
end
table.sort( all )
return "{"..table.concat(all,',').."}"
return tostring(t).."{"..table.concat(all,',').."}"
end
-- basic weak-reference table test
local src = "return { 'one', 'two', 'three', 'four', a='aaa', b='bbb', c='ccc', d='ddd'}"
local weak = newtable( loadstring(src)() )
local strong = { weak[1], weak[3], a=weak.a, c=weak.c }
print( 'before, weak:', eles(weak) )
print( 'before, strong:', eles(strong) )
print( 'gc', pcall( collectgarbage, "collect" ) )
print( 'after, weak:', eles(weak) )
print( 'after, strong:', eles(strong) )
print( 'gc', pcall( collectgarbage, "collect" ) )
print( 'after, weak:', eles(weak) )
print( 'after, strong:', eles(strong) )
print( '-- concat tests' )
function tryconcat(t)
print( table.concat(t) )
print( table.concat(t,'--') )
print( table.concat(t,',',2) )
print( table.concat(t,',',2,2) )
print( table.concat(t,',',5,2) )
end
tryconcat( newtable{ "one", "two", "three", a='aaa', b='bbb', c='ccc' } )
tryconcat( newtable{ "one", "two", "three", "four", "five" } )
function tryconcat(t)
print( table.concat(t) )
print( table.concat(t,'--') )
print( table.concat(t,',',2) )
end
tryconcat( newtable{ a='aaa', b='bbb', c='ccc', d='ddd', e='eee' } )
tryconcat( newtable{ [501]="one", [502]="two", [503]="three", [504]="four", [505]="five" } )
tryconcat( newtable{} )
-- insert, maxn
print( '-- insert, maxn tests' )
local t = newweak{ "one", "two", "three", a='aaa', b='bbb', c='ccc' }
local t = newtable{ "one", "two", "three", a='aaa', b='bbb', c='ccc' }
print( eles(t) )
table.insert(t,'six'); print( eles(t) )
table.insert(t,1,'seven'); print( eles(t) )
@@ -29,20 +66,20 @@ table.insert(t,10,'ten'); print( eles(t) )
-- remove
print( '-- remove tests' )
t = newweak{ "one", "two", "three", "four", "five", "six", "seven", [10]="ten", a='aaa', b='bbb', c='ccc' }
t = newtable{ "one", "two", "three", "four", "five", "six", "seven", [10]="ten", a='aaa', b='bbb', c='ccc' }
print( eles(t) )
print( table.remove(t) ); print( eles(t) )
print( table.remove(t,1) ); print( eles(t) )
print( table.remove(t,3) ); print( eles(t) )
print( table.remove(t,5) ); print( eles(t) )
print( table.remove(t,10) ); print( eles(t) )
print( table.remove(t,-1) ); print( eles(t) )
print( table.remove(t,-1) ) ; print( eles(t) )
print( 'table.remove(t)', table.remove(t) ); print( eles(t) )
print( 'table.remove(t,1)', table.remove(t,1) ); print( eles(t) )
print( 'table.remove(t,3)', table.remove(t,3) ); print( eles(t) )
print( 'table.remove(t,5)', table.remove(t,5) ); print( eles(t) )
print( 'table.remove(t,10)', table.remove(t,10) ); print( eles(t) )
print( 'table.remove(t,-1)', table.remove(t,-1) ); print( eles(t) )
print( 'table.remove(t,-1)', table.remove(t,-1) ) ; print( eles(t) )
-- sort
print( '-- sort tests' )
function sorttest(t,f)
t = newweak(t)
t = (t)
print( table.concat(t,'-') )
if f then
table.sort(t,f)
@@ -50,25 +87,28 @@ function sorttest(t,f)
table.sort(t)
end
print( table.concat(t,'-') )
end
sorttest{ "one", "two", "three" }
sorttest{ "www", "vvv", "uuu", "ttt", "sss", "zzz", "yyy", "xxx" }
sorttest( { "www", "vvv", "uuu", "ttt", "sss", "zzz", "yyy", "xxx" }, function(a,b) return b<a end)
end
--[[
sorttest( newtable{ "one", "two", "three" } )
sorttest( newtable{ "www", "vvv", "uuu", "ttt", "sss", "zzz", "yyy", "xxx" } )
sorttest( newtable{ "www", "vvv", "uuu", "ttt", "sss", "zzz", "yyy", "xxx" }, function(a,b) return b<a end)
--]]
-- getn
t0 = newweak{}
t1 = newweak{ 'one', 'two', 'three' }
t2 = newweak{ a='aa', b='bb', c='cc' }
t3 = newweak{ 'one', 'two', 'three', a='aa', b='bb', c='cc' }
print( 'getn(t0)', pcall( table.getn, t0 ) )
print( 'getn(t1)', pcall( table.getn, t1 ) )
print( 'getn(t2)', pcall( table.getn, t2 ) )
print( 'getn(t3)', pcall( table.getn, t3 ) )
t0 = newtable{}
t1 = newtable{ 'one', 'two', 'three' }
t2 = newtable{ a='aa', b='bb', c='cc' }
t3 = newtable{ 'one', 'two', 'three', a='aa', b='bb', c='cc' }
print( 'getn('..eles(t0)..')', pcall( table.getn, t0 ) )
print( 'getn('..eles(t1)..')', pcall( table.getn, t1 ) )
print( 'getn('..eles(t2)..')', pcall( table.getn, t2 ) )
print( 'getn('..eles(t3)..')', pcall( table.getn, t3 ) )
-- foreach
function test( f, t, result, name )
status, value = pcall( f, t, function(...)
print(name,...)
print(' -- ',...)
print(' next',next(t,(...)))
return result
end )
print( name, 's,v', status, value )
@@ -78,29 +118,32 @@ function testall( f, t, name )
test( f, t, false, name..'fls' )
test( f, t, 100, name..'100' )
end
testall( table.foreach, t0, 'table.foreach(t0)' )
testall( table.foreach, t1, 'table.foreach(t1)' )
testall( table.foreach, t2, 'table.foreach(t2)' )
testall( table.foreach, t3, 'table.foreach(t3)' )
testall( table.foreachi, t0, 'table.foreachi(t0)' )
testall( table.foreachi, t1, 'table.foreachi(t1)' )
testall( table.foreachi, t2, 'table.foreachi(t2)' )
testall( table.foreachi, t3, 'table.foreachi(t3)' )
testall( table.foreach, t0, 'table.foreach('..eles(t0)..')' )
testall( table.foreach, t1, 'table.foreach('..eles(t1)..')' )
testall( table.foreach, t2, 'table.foreach('..eles(t2)..')' )
testall( table.foreach, t3, 'table.foreach('..eles(t3)..')' )
testall( table.foreachi, t0, 'table.foreachi('..eles(t0)..')' )
testall( table.foreachi, t1, 'table.foreachi('..eles(t1)..')' )
testall( table.foreachi, t2, 'table.foreachi('..eles(t2)..')' )
testall( table.foreachi, t3, 'table.foreachi('..eles(t3)..')' )
-- pairs, ipairs
function testpairs(f, t, name)
print( name, unpack(t) )
print( name )
for a,b in f(t) do
print( a, b )
print( ' ', a, b )
end
end
testpairs( pairs, t0, 'pairs(t0)' )
testpairs( pairs, t1, 'pairs(t1)' )
testpairs( pairs, t2, 'pairs(t2)' )
testpairs( pairs, t3, 'pairs(t3)' )
testpairs( ipairs, t0, 'ipairs(t0)' )
testpairs( ipairs, t1, 'ipairs(t1)' )
testpairs( ipairs, t2, 'ipairs(t2)' )
testpairs( ipairs, t3, 'ipairs(t3)' )
function testbothpairs(t)
testpairs( pairs, t, 'pairs( '..eles(t)..' )' )
testpairs( ipairs, t, 'ipairs( '..eles(t)..' )' )
end
for i,t in ipairs({t0,t1,t2,t3}) do
testbothpairs(t)
end
t = newtable{ 'one', 'two', 'three', 'four', 'five' }
testbothpairs(t)
t[6] = 'six'
testbothpairs(t)
t[4] = nil
testbothpairs(t)