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local nodeMgr = require 'vm.node'
local guide = require 'parser.guide'
local compiler = require 'vm.compiler'
---@class vm.value-manager
local m = {}
---@param source parser.object
---@return boolean|nil
function m.test(source)
local node = compiler.compileNode(source)
local hasTrue, hasFalse
for n in nodeMgr.eachNode(node) do
if n.type == 'boolean' then
if n[1] == true then
hasTrue = true
end
if n[1] == false then
hasTrue = false
end
end
if n.type == 'nil' then
hasFalse = true
end
if n.type == 'string'
or n.type == 'number'
or n.type == 'integer'
or n.type == 'table'
or n.type == 'function' then
hasTrue = true
end
end
if hasTrue == hasFalse then
return nil
end
if hasTrue then
return true
else
return false
end
end
---@param v vm.node
---@return string?
local function getUnique(v)
if v.type == 'local' then
return ('loc:%s@%d'):format(guide.getUri(v), v.start)
end
if v.type == 'global' then
return ('%s:%s'):format(v.cate, v.name)
end
if v.type == 'boolean' then
if v[1] == nil then
return false
end
return ('%s'):format(v[1])
end
if v.type == 'number' then
if not v[1] then
return false
end
return ('num:%s'):format(v[1])
end
if v.type == 'integer' then
if not v[1] then
return false
end
return ('num:%s'):format(v[1])
end
if v.type == 'table' then
return ('table:%s@%d'):format(guide.getUri(v), v.start)
end
if v.type == 'function' then
return ('func:%s@%d'):format(guide.getUri(v), v.start)
end
return false
end
---@param a vm.node
---@param b vm.node
---@return boolean|nil
function m.equal(a, b)
local nodeA = compiler.compileNode(a)
local nodeB = compiler.compileNode(b)
local mapA = {}
for n in nodeMgr.eachNode(nodeA) do
local unique = getUnique(n)
if not unique then
return nil
end
mapA[unique] = true
end
for n in nodeMgr.eachNode(nodeB) do
local unique = getUnique(n)
if not unique then
return nil
end
if not mapA[unique] then
return false
end
end
return true
end
---@param v vm.node
---@return integer?
function m.getInteger(v)
local node = compiler.compileNode(v)
local result
for n in nodeMgr.eachNode(node) do
if n.type == 'integer' then
if result then
return nil
else
result = n[1]
end
elseif n.type == 'number' then
if result then
return nil
elseif not math.tointeger(n[1]) then
return nil
else
result = math.tointeger(n[1])
end
elseif n.type ~= 'local'
and n.type ~= 'global' then
return nil
end
end
return result
end
---@param v vm.node
---@return integer?
function m.getString(v)
local node = compiler.compileNode(v)
local result
for n in nodeMgr.eachNode(node) do
if n.type == 'string' then
if result then
return nil
else
result = n[1]
end
elseif n.type ~= 'local'
and n.type ~= 'global' then
return nil
end
end
return result
end
---@param v vm.node
---@return number?
function m.getNumber(v)
local node = compiler.compileNode(v)
local result
for n in nodeMgr.eachNode(node) do
if n.type == 'number'
or n.type == 'integer' then
if result then
return nil
else
result = n[1]
end
elseif n.type ~= 'local'
and n.type ~= 'global' then
return nil
end
end
return result
end
---@param v vm.node
---@return boolean|nil
function m.getBoolean(v)
local node = compiler.compileNode(v)
local result
for n in nodeMgr.eachNode(node) do
if n.type == 'boolean' then
if result then
return nil
else
result = n[1]
end
elseif n.type ~= 'local'
and n.type ~= 'global' then
return nil
end
end
return result
end
---@param v vm.node
---@return table<any, boolean>?
function m.getLiterals(v)
local map
local node = compiler.compileNode(v)
for n in nodeMgr.eachNode(node) do
local literal
if n.type == 'boolean'
or n.type == 'string'
or n.type == 'number'
or n.type == 'integer' then
literal = n[1]
end
if n.type == 'global' and n.cate == 'type' then
if n.name == 'true' then
literal = true
elseif n.name == 'false' then
literal = false
end
end
if n.type == 'doc.type.integer' then
literal = n[1]
end
if literal ~= nil then
if not map then
map = {}
end
map[literal] = true
end
end
return map
end
return m
|
