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