Revert "temp remove pairs to merge other changes to dev"

README.md

@@ -53,7 +53,8 @@
 - [Cheat Sheet](#cheat-sheet)
   - [Aliases](#aliases)
   - [Predefs](#predefs)
-  - [Functions](#functions)
+  - [Core Functions](#core-functions)
+  - [Relation Functions](#relation-functions)
   - [Classes](#classes)
     - [Chunk](#chunk)
     - [Builder](#builder)
@@ -1048,14 +1049,20 @@ remove_hook :: {entity, fragment, component}
 
 each_state :: implementation-specific
 execute_state :: implementation-specific
+primaries_state :: implementation-specific
+secondaries_state :: implementation-specific
 
 each_iterator :: {each_state? -> fragment?, component?}
 execute_iterator :: {execute_state? -> chunk?, entity[]?, integer?}
+primaries_iterator :: {primaries_state? -> fragment?, component?}
+secondaries_iterator :: {secondaries_state? -> fragment?, component?}
 ```
 
 ### Predefs
 
 ```
+ANY :: fragment
+
 TAG :: fragment
 NAME :: fragment
 
@@ -1091,7 +1098,7 @@ DESTRUCTION_POLICY_DESTROY_ENTITY :: id
 DESTRUCTION_POLICY_REMOVE_FRAGMENT :: id
 ```
 
-### Functions
+### Core Functions
 
 ```
 id :: integer? -> id...
@@ -1139,6 +1146,25 @@ debug_mode :: boolean -> ()
 collect_garbage :: ()
 ```
 
+### Relation Functions
+
+```
+pair :: id, id -> id
+unpair :: id -> id, id
+
+is_pair :: id -> boolean
+is_wildcard :: id -> boolean
+
+primary :: entity, fragment, integer? -> fragment?, component?
+secondary :: entity, fragment, integer? -> fragment?, component?
+
+primaries :: entity, fragment -> {primaries_state? -> fragment?, component?}, primaries_state?
+secondaries :: entity, fragment -> {secondaries_state? -> fragment?, component?}, secondaries_state?
+
+primary_count :: entity, fragment -> integer
+secondary_count :: entity, fragment -> integer
+```
+
 ### Classes
 
 #### Chunk
@@ -1233,6 +1259,8 @@ builder_mt:destruction_policy :: id -> builder
 
 ## Predefs
 
+### `evolved.ANY`
+
 ### `evolved.TAG`
 
 ### `evolved.NAME`
@@ -1281,7 +1309,7 @@ builder_mt:destruction_policy :: id -> builder
 
 ### `evolved.DESTRUCTION_POLICY_REMOVE_FRAGMENT`
 
-## Functions
+## Core Functions
 
 ### `evolved.id`
 
@@ -1549,6 +1577,112 @@ function evolved.debug_mode(yesno) end
 function evolved.collect_garbage() end
 ```
 
+## Relation Functions
+
+### `evolved.pair`
+
+```lua
+---@param primary evolved.id
+---@param secondary evolved.id
+---@return evolved.id pair
+---@nodiscard
+function evolved.pair(primary, secondary) end
+```
+
+### `evolved.unpair`
+
+```lua
+---@param pair evolved.id
+---@return evolved.id primary
+---@return evolved.id secondary
+---@nodiscard
+function evolved.unpair(pair) end
+```
+
+### `evolved.is_pair`
+
+```lua
+---@param id evolved.id
+---@return boolean
+---@nodiscard
+function evolved.is_pair(id) end
+```
+
+### `evolved.is_wildcard`
+
+```lua
+---@param id evolved.id
+---@return boolean
+---@nodiscard
+function evolved.is_wildcard(id) end
+```
+
+### `evolved.primary`
+
+```lua
+---@param entity evolved.entity
+---@param secondary evolved.fragment
+---@param index? integer
+---@return evolved.fragment? primary
+---@return evolved.component? component
+---@nodiscard
+function evolved.primary(entity, secondary, index) end
+```
+
+### `evolved.secondary`
+
+```lua
+---@param entity evolved.entity
+---@param primary evolved.fragment
+---@param index? integer
+---@return evolved.fragment? secondary
+---@return evolved.component? component
+---@nodiscard
+function evolved.secondary(entity, primary, index) end
+```
+
+### `evolved.primaries`
+
+```lua
+---@param entity evolved.entity
+---@param secondary evolved.fragment
+---@return evolved.primaries_iterator iterator
+---@return evolved.primaries_state? iterator_state
+---@nodiscard
+function evolved.primaries(entity, secondary) end
+```
+
+### `evolved.secondaries`
+
+```lua
+---@param entity evolved.entity
+---@param primary evolved.fragment
+---@return evolved.secondaries_iterator iterator
+---@return evolved.secondaries_state? iterator_state
+---@nodiscard
+function evolved.secondaries(entity, primary) end
+```
+
+### `evolved.primary_count`
+
+```lua
+---@param entity evolved.entity
+---@param secondary evolved.fragment
+---@return integer
+---@nodiscard
+function evolved.primary_count(entity, secondary) end
+```
+
+### `evolved.secondary_count`
+
+```lua
+---@param entity evolved.entity
+---@param primary evolved.fragment
+---@return integer
+---@nodiscard
+function evolved.secondary_count(entity, primary) end
+```
+
 ## Classes
 
 ### Chunk

develop/all.lua

@@ -1,6 +1,8 @@
+require 'develop.samples.relations'
 require 'develop.samples.systems'
 
 require 'develop.testing.name_tests'
+require 'develop.testing.pairs_tests'
 require 'develop.testing.requires_fragment_tests'
 require 'develop.testing.system_as_query_tests'
 
@@ -23,3 +25,5 @@ print '----------------------------------------'
 basics.describe_fuzz 'develop.fuzzing.requires_fuzz'
 print '----------------------------------------'
 basics.describe_fuzz 'develop.fuzzing.unique_fuzz'
+print '----------------------------------------'
+basics.describe_fuzz 'develop.fuzzing.wildcard_fuzz'

develop/fuzzing/wildcard_fuzz.lua

@@ -0,0 +1,254 @@
+local evo = require 'evolved'
+
+evo.debug_mode(true)
+
+---
+---
+---
+---
+---
+
+local __table_unpack = (function()
+    ---@diagnostic disable-next-line: deprecated
+    return table.unpack or unpack
+end)()
+
+---
+---
+---
+---
+---
+
+local all_entity_list = {} ---@type evolved.entity[]
+local all_fragment_list = {} ---@type evolved.fragment[]
+
+for i = 1, math.random(1, 5) do
+    local fragment_builder = evo.builder()
+
+    if math.random(1, 3) == 1 then
+        fragment_builder:explicit()
+    end
+
+    if math.random(1, 3) == 1 then
+        if math.random(1, 2) == 1 then
+            fragment_builder:destruction_policy(evo.DESTRUCTION_POLICY_DESTROY_ENTITY)
+        else
+            fragment_builder:destruction_policy(evo.DESTRUCTION_POLICY_REMOVE_FRAGMENT)
+        end
+    end
+
+    all_fragment_list[i] = fragment_builder:spawn()
+end
+
+for i = 1, math.random(50, 100) do
+    local entity_builder = evo.builder()
+
+    for _ = 0, math.random(0, #all_fragment_list) do
+        if math.random(1, 2) == 1 then
+            local fragment = all_fragment_list[math.random(1, #all_fragment_list)]
+            entity_builder:set(fragment)
+        else
+            local primary = all_fragment_list[math.random(1, #all_fragment_list)]
+            local secondary = all_fragment_list[math.random(1, #all_fragment_list)]
+            entity_builder:set(evo.pair(primary, secondary))
+        end
+    end
+
+    all_entity_list[i] = entity_builder:spawn()
+end
+
+---
+---
+---
+---
+---
+
+for _ = 1, math.random(1, 100) do
+    local query_builder = evo.builder()
+
+    local query_include_set = {} ---@type table<evolved.fragment, integer>
+    local query_include_list = {} ---@type evolved.entity[]
+    local query_include_count = 0 ---@type integer
+
+    local query_exclude_set = {} ---@type table<evolved.fragment, integer>
+    local query_exclude_list = {} ---@type evolved.entity[]
+    local query_exclude_count = 0 ---@type integer
+
+    for _ = 1, math.random(0, 2) do
+        if math.random(1, 2) == 1 then
+            local fragment = all_fragment_list[math.random(1, #all_fragment_list)]
+
+            query_builder:include(fragment)
+
+            if not query_include_set[fragment] then
+                query_include_count = query_include_count + 1
+                query_include_set[fragment] = query_include_count
+                query_include_list[query_include_count] = fragment
+            end
+        else
+            local primary = all_fragment_list[math.random(1, #all_fragment_list)]
+            local secondary = all_fragment_list[math.random(1, #all_fragment_list)]
+
+            if math.random(1, 3) == 1 then
+                primary = evo.ANY
+            end
+
+            if math.random(1, 3) == 1 then
+                secondary = evo.ANY
+            end
+
+            local pair = evo.pair(primary, secondary)
+
+            query_builder:include(pair)
+
+            if not query_include_set[pair] then
+                query_include_count = query_include_count + 1
+                query_include_set[pair] = query_include_count
+                query_include_list[query_include_count] = pair
+            end
+        end
+    end
+
+    for _ = 1, math.random(0, 2) do
+        if math.random(1, 2) == 1 then
+            local fragment = all_fragment_list[math.random(1, #all_fragment_list)]
+
+            query_builder:exclude(fragment)
+
+            if not query_exclude_set[fragment] then
+                query_exclude_count = query_exclude_count + 1
+                query_exclude_set[fragment] = query_exclude_count
+                query_exclude_list[query_exclude_count] = fragment
+            end
+        else
+            local primary = all_fragment_list[math.random(1, #all_fragment_list)]
+            local secondary = all_fragment_list[math.random(1, #all_fragment_list)]
+
+            if math.random(1, 3) == 1 then
+                primary = evo.ANY
+            end
+
+            if math.random(1, 3) == 1 then
+                secondary = evo.ANY
+            end
+
+            local pair = evo.pair(primary, secondary)
+
+            query_builder:exclude(pair)
+
+            if not query_exclude_set[pair] then
+                query_exclude_count = query_exclude_count + 1
+                query_exclude_set[pair] = query_exclude_count
+                query_exclude_list[query_exclude_count] = pair
+            end
+        end
+    end
+
+    local query_entity_set = {} ---@type table<evolved.entity, integer>
+    local query_entity_count = 0 ---@type integer
+
+    do
+        local query = query_builder:spawn()
+
+        for chunk, entity_list, entity_count in evo.execute(query) do
+            if not chunk:has(evo.INTERNAL) then
+                for i = 1, entity_count do
+                    local entity = entity_list[i]
+                    assert(not query_entity_set[entity])
+                    query_entity_count = query_entity_count + 1
+                    query_entity_set[entity] = query_entity_count
+                end
+            end
+        end
+
+        if query_entity_set[query] then
+            query_entity_set[query] = nil
+            query_entity_count = query_entity_count - 1
+        end
+
+        evo.destroy(query)
+    end
+
+    do
+        local expected_entity_count = 0
+
+        for _, entity in ipairs(all_entity_list) do
+            local is_entity_expected =
+                not evo.empty(entity) and
+                evo.has_all(entity, __table_unpack(query_include_list)) and
+                not evo.has_any(entity, __table_unpack(query_exclude_list))
+
+            for fragment in evo.each(entity) do
+                if evo.has(fragment, evo.EXPLICIT) then
+                    local is_fragment_included =
+                        query_include_set[fragment] ~= nil or
+                        query_include_set[evo.pair(fragment, evo.ANY)] ~= nil
+
+                    if not is_fragment_included then
+                        is_entity_expected = false
+                        break
+                    end
+                end
+            end
+
+            if is_entity_expected then
+                assert(query_entity_set[entity])
+                expected_entity_count = expected_entity_count + 1
+            else
+                assert(not query_entity_set[entity])
+            end
+        end
+
+        for _, entity in ipairs(all_fragment_list) do
+            local is_entity_expected =
+                not evo.empty(entity) and
+                evo.has_all(entity, __table_unpack(query_include_list)) and
+                not evo.has_any(entity, __table_unpack(query_exclude_list))
+
+            for fragment in evo.each(entity) do
+                if evo.has(fragment, evo.EXPLICIT) then
+                    is_entity_expected = is_entity_expected and
+                        (query_include_set[fragment] ~= nil) or
+                        (evo.is_pair(fragment) and query_include_set[evo.pair(fragment, evo.ANY)] ~= nil)
+                end
+            end
+
+            if is_entity_expected then
+                assert(query_entity_set[entity])
+                expected_entity_count = expected_entity_count + 1
+            else
+                assert(not query_entity_set[entity])
+            end
+        end
+
+        assert(query_entity_count == expected_entity_count)
+    end
+end
+
+---
+---
+---
+---
+---
+
+if math.random(1, 2) == 1 then
+    evo.collect_garbage()
+end
+
+if math.random(1, 2) == 1 then
+    evo.destroy(__table_unpack(all_entity_list))
+    if math.random(1, 2) == 1 then
+        evo.collect_garbage()
+    end
+    evo.destroy(__table_unpack(all_fragment_list))
+else
+    evo.destroy(__table_unpack(all_fragment_list))
+    if math.random(1, 2) == 1 then
+        evo.collect_garbage()
+    end
+    evo.destroy(__table_unpack(all_entity_list))
+end
+
+if math.random(1, 2) == 1 then
+    evo.collect_garbage()
+end

develop/samples/relations.lua

@@ -0,0 +1,79 @@
+---@diagnostic disable: unused-local
+
+local evo = require 'evolved'
+
+evo.debug_mode(true)
+
+local fragments = {
+    planet = evo.builder()
+        :name('planet')
+        :tag()
+        :spawn(),
+    spaceship = evo.builder()
+        :name('spaceship')
+        :tag()
+        :spawn(),
+}
+
+local relations = {
+    docked_to = evo.builder()
+        :name('docked_to')
+        :tag()
+        :spawn(),
+}
+
+local planets = {
+    mars = evo.builder()
+        :name('Mars')
+        :set(fragments.planet)
+        :spawn(),
+    venus = evo.builder()
+        :name('Venus')
+        :set(fragments.planet)
+        :spawn(),
+}
+
+local spaceships = {
+    falcon = evo.builder()
+        :name('Millennium Falcon')
+        :set(fragments.spaceship)
+        :set(evo.pair(relations.docked_to, planets.mars))
+        :spawn(),
+    enterprise = evo.builder()
+        :name('USS Enterprise')
+        :set(fragments.spaceship)
+        :set(evo.pair(relations.docked_to, planets.venus))
+        :spawn(),
+}
+
+local queries = {
+    all_docked_spaceships = evo.builder()
+        :include(fragments.spaceship)
+        :include(evo.pair(relations.docked_to, evo.ANY))
+        :spawn(),
+    docked_spaceships_to_mars = evo.builder()
+        :include(fragments.spaceship)
+        :include(evo.pair(relations.docked_to, planets.mars))
+        :spawn(),
+
+}
+
+print '-= | All Docked Spaceships | =-'
+
+for chunk, entity_list, entity_count in evo.execute(queries.all_docked_spaceships) do
+    for i = 1, entity_count do
+        local entity = entity_list[i]
+        local planet = evo.secondary(entity, relations.docked_to)
+        print(string.format('%s is docked to %s', evo.name(entity), evo.name(planet)))
+    end
+end
+
+print '-= | Docked Spaceships to Mars | =-'
+
+for chunk, entity_list, entity_count in evo.execute(queries.docked_spaceships_to_mars) do
+    for i = 1, entity_count do
+        local entity = entity_list[i]
+        local planet = evo.secondary(entity, relations.docked_to)
+        print(string.format('%s is docked to %s', evo.name(entity), evo.name(planet)))
+    end
+end