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anselme/stdlib/types.lua

319 lines
7.1 KiB
Lua

local format, to_lua, from_lua, events, anselme, escape, hash, mark_constant, update_hashes
local types = {}
types.lua = {
["nil"] = {
to_anselme = function(val)
return {
type = "nil",
value = nil
}
end
},
boolean = {
to_anselme = function(val)
return {
type = "number",
value = val and 1 or 0
}
end
},
number = {
to_anselme = function(val)
return {
type = "number",
value = val
}
end
},
string = {
to_anselme = function(val)
return {
type = "string",
value = val
}
end
},
table = {
to_anselme = function(val)
local is_map = false
local l = {}
local m = {}
for _, v in ipairs(val) do
local r, e = from_lua(v)
if not r then return r, e end
table.insert(l, r)
end
for k, v in pairs(val) do
if not l[k] then
is_map = true
local kv, ke = from_lua(k)
if not k then return k, ke end
local vv, ve = from_lua(v)
if not v then return v, ve end
local h, err = hash(kv)
if not h then return nil, err end
m[h] = { kv, vv }
end
end
if is_map then
for i, v in ipairs(l) do
local key = { type = "number", value = i }
local h, err = hash(key)
if not h then return nil, err end
m[h] = { key, v }
end
return {
type = "map",
value = m
}
else
return {
type = "list",
value = l
}
end
end
}
}
types.anselme = {
["nil"] = {
format = function()
return ""
end,
to_lua = function()
return nil
end,
hash = function()
return "nil()"
end,
mark_constant = function() end,
},
number = {
format = function(val)
return tostring(val)
end,
to_lua = function(val)
return val
end,
hash = function(val)
return ("n(%s)"):format(val)
end,
mark_constant = function() end,
},
string = {
format = function(val)
return tostring(val)
end,
to_lua = function(val)
return val
end,
hash = function(val)
return ("s(%s)"):format(val)
end,
mark_constant = function() end,
},
list = {
mutable = true,
format = function(val)
local l = {}
for _, v in ipairs(val) do
local s, e = format(v)
if not s then return s, e end
table.insert(l, s)
end
return ("[%s]"):format(table.concat(l, ", "))
end,
to_lua = function(val)
local l = {}
for _, v in ipairs(val) do
local s, e = to_lua(v)
if not s and e then return s, e end
table.insert(l, s)
end
return l
end,
hash = function(val)
local l = {}
for _, v in ipairs(val) do
local s, e = hash(v)
if not s then return s, e end
table.insert(l, s)
end
return ("l(%s)"):format(table.concat(l, ","))
end,
mark_constant = function(v)
v.constant = true
for _, item in ipairs(v.value) do
mark_constant(item)
end
end
},
map = {
mutable = true,
format = function(val)
local l = {}
for _, v in pairs(val) do
local ks, ke = format(v[1])
if not ks then return ks, ke end
local vs, ve = format(v[2])
if not vs then return vs, ve end
table.insert(l, ("%s=%s"):format(ks, vs))
end
table.sort(l)
return ("{%s}"):format(table.concat(l, ", "))
end,
to_lua = function(val)
local l = {}
for _, v in pairs(val) do
local kl, ke = to_lua(v[1])
if not kl and ke then return kl, ke end
local xl, xe = to_lua(v[2])
if not xl and xe then return xl, xe end
l[kl] = xl
end
return l
end,
hash = function(val)
local l = {}
for _, v in pairs(val) do
local ks, ke = hash(v[1])
if not ks then return ks, ke end
local vs, ve = hash(v[2])
if not vs then return vs, ve end
table.insert(l, ("%s=%s"):format(ks, vs))
end
table.sort(l)
return ("m(%s)"):format(table.concat(l, ","))
end,
mark_constant = function(v)
v.constant = true
for _, val in pairs(v.value) do
mark_constant(val[1])
mark_constant(val[2])
end
update_hashes(v)
end,
},
pair = {
format = function(val)
local k, ke = format(val[1])
if not k then return k, ke end
local v, ve = format(val[2])
if not v then return v, ve end
return ("%s=%s"):format(k, v)
end,
to_lua = function(val)
local k, ke = to_lua(val[1])
if not k and ke then return k, ke end
local v, ve = to_lua(val[2])
if not v and ve then return v, ve end
return { [k] = v }
end,
hash = function(val)
local k, ke = hash(val[1])
if not k then return k, ke end
local v, ve = hash(val[2])
if not v then return v, ve end
return ("p(%s=%s)"):format(k, v)
end,
mark_constant = function(v)
mark_constant(v.value[1])
mark_constant(v.value[2])
end,
},
annotated = {
format = function(val)
local k, ke = format(val[1])
if not k then return k, ke end
local v, ve = format(val[2])
if not v then return v, ve end
return ("%s::%s"):format(k, v)
end,
to_lua = function(val)
local k, ke = to_lua(val[1])
if not k and ke then return k, ke end
return k
end,
hash = function(val)
local k, ke = hash(val[1])
if not k then return k, ke end
local v, ve = hash(val[2])
if not v then return v, ve end
return ("a(%s::%s)"):format(k, v)
end,
mark_constant = function(v)
mark_constant(v.value[1])
mark_constant(v.value[2])
end,
},
["function reference"] = {
format = function(val)
if #val > 1 then
return ("&(%s)"):format(table.concat(val, ", "))
else
return ("&%s"):format(table.concat(val, ", "))
end
end,
to_lua = nil,
hash = function(val)
return ("&f(%s)"):format(table.concat(val, ", "))
end,
mark_constant = function() end,
},
["variable reference"] = {
format = function(val)
return ("&%s"):format(val)
end,
to_lua = nil,
hash = function(val)
return ("&v(%s)"):format(val)
end,
mark_constant = function() end,
},
object = {
mutable = true,
format = function(val)
local attributes = {}
for name, v in pairs(val.attributes) do
table.insert(attributes, ("%s=%s"):format(name:gsub("^"..escape(val.class)..".", ""), format(v)))
end
if #attributes > 0 then
table.sort(attributes)
return ("%%%s(%s)"):format(val.class, table.concat(attributes, ", "))
else
return ("%%%s"):format(val.class)
end
end,
to_lua = nil,
hash = function(val)
local attributes = {}
for name, v in pairs(val.attributes) do
table.insert(attributes, ("%s=%s"):format(name:gsub("^"..escape(val.class)..".", ""), format(v)))
end
table.sort(attributes)
return ("%%(%s;%s)"):format(val.class, table.concat(attributes, ","))
end,
mark_constant = function(v)
v.constant = true
end,
},
-- internal types
["event buffer"] = {
format = function(val) -- triggered from subtexts
local v, e = events:write_buffer(anselme.running.state, val)
if not v then return v, e end
return ""
end
},
}
package.loaded[...] = types
local common = require((...):gsub("stdlib%.types$", "interpreter.common"))
format, to_lua, from_lua, events, hash, mark_constant, update_hashes = common.format, common.to_lua, common.from_lua, common.events, common.hash, common.mark_constant, common.update_hashes
anselme = require((...):gsub("stdlib%.types$", "anselme"))
escape = require((...):gsub("stdlib%.types$", "parser.common")).escape
return types