86a3219e7f
"package.nomsupath" to search for files in different locations, and prioritizing use of "luafilesystem" over system calls.
223 lines
8.8 KiB
Plaintext
223 lines
8.8 KiB
Plaintext
#
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This File contains actions for making actions and compile-time actions and some helper
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functions to make that easier.
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lua> ".."
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nomsu.COMPILE_ACTIONS["% -> %"] = function(nomsu, tree, \%args, \%body)
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local lua = LuaCode.Value(tree.source, "function(")
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if AST.is_syntax_tree(\%args, "Action") then \%args = \%args:get_args() end
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local lua_args = table.map(\%args, function(a) return AST.is_syntax_tree(a) and tostring(nomsu:compile(a)) or a end)
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lua:concat_append(lua_args, ", ")
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local body_lua = AST.is_syntax_tree(\%body) and nomsu:compile(\%body):as_statements("return ") or \%body
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body_lua:remove_free_vars(lua_args)
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body_lua:declare_locals()
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lua:append(")\n ", body_lua, "\nend")
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return lua
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end
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lua> ".."
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nomsu.COMPILE_ACTIONS["compile as %"] = function(nomsu, tree, \%action)
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local lua = LuaCode.Value(tree.source, "nomsu.COMPILE_ACTIONS[", repr(\%action.stub), "](")
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local lua_args = table.map(\%action:get_args(), function(a) return nomsu:compile(a) end)
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table.insert(lua_args, 1, "nomsu")
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table.insert(lua_args, 2, "tree")
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lua:concat_append(lua_args, ", ")
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lua:append(")")
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return lua
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end
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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lua> ".."
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nomsu.COMPILE_ACTIONS["compile % to %"] = function(nomsu, tree, \%actions, \%body)
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local \%args = {"nomsu", "tree", unpack(table.map(\%actions[1]:get_args(), function(a) return tostring(nomsu:compile(a)) end))}
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local lua = LuaCode(tree.source, "nomsu.COMPILE_ACTIONS[", repr(\%actions[1].stub),
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"] = ", \(compile as: %args -> %body))
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for i=2,#\%actions do
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local alias = \%actions[i]
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local \%alias_args = {"nomsu", "tree", unpack(table.map(alias:get_args(), function(a) return tostring(nomsu:compile(a)) end))}
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lua:append("\nnomsu.COMPILE_ACTIONS[", repr(alias.stub), "] = ")
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if utils.equivalent(\%args, \%alias_args) then
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lua:append("nomsu.COMPILE_ACTIONS[", repr(\%actions[1].stub), "]")
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else
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lua:append("function(")
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lua:concat_append(\%alias_args, ", ")
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lua:append(")\n return nomsu.COMPILE_ACTIONS[", repr(\%actions[1].stub), "](")
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lua:concat_append(\%args, ", ")
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lua:append(")\nend")
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end
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end
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return lua
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end
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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compile [using %defs compile %body] to
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lua> ".."
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local lua = LuaCode(tree.source)
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lua:append(
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"local old_nomsu = nomsu\n",
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"local nomsu = table.fork(old_nomsu, {COMPILE_ACTIONS=table.fork(old_nomsu.COMPILE_ACTIONS)})")
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lua:append(nomsu:compile(\%defs))
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lua:append("\n")
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lua:append("local ret = nomsu:compile(tree)\n")
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lua:append("return ret")
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nomsu = table.fork(nomsu, {tree=\%body})
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local output = nomsu:run_lua(lua)
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return output
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compile [local action %actions %body] to
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lua> ".."
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local fn_name = "A"..string.as_lua_id(\%actions[1].stub)
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local \%args = table.map(\%actions[1]:get_args(), function(a) return tostring(nomsu:compile(a)) end)
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local lua = LuaCode(tree.source, fn_name, " = ", \(compile as: %args -> %body))
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lua:add_free_vars({fn_name})
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for i=2,#\%actions do
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local alias = \%actions[i]
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local alias_name = "A"..string.as_lua_id(alias.stub)
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lua:add_free_vars({alias_name})
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local \%alias_args = table.map(alias:get_args(), function(a) return tostring(nomsu:compile(a)) end)
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lua:append("\n", alias_name, " = ")
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if utils.equivalent(\%args, \%alias_args) then
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lua:append(fn_name)
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else
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lua:append("function(")
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lua:concat_append(\%alias_args, ", ")
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lua:append(")\n return ", fn_name, "(")
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lua:concat_append(\%args, ", ")
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lua:append(")\nend")
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end
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end
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return lua
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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compile [action %actions %body] to
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lua> ".."
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local lua = \(compile as: local action %actions %body)
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lua:remove_free_vars(table.map(\%actions, function(a) return "A"..string.as_lua_id(a.stub) end))
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return lua
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compile [action %action] to
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Lua value "A\(%action.stub as lua id)"
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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compile [parse %actions as %body] to
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lua> ".."
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local replacements = {}
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for i,arg in ipairs(\%actions[1]:get_args()) do
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replacements[arg[1]] = tostring(nomsu:compile(arg))
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end
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local function make_tree(t)
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if not AST.is_syntax_tree(t) then
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return repr(t)
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elseif t.type ~= 'Var' then
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local args = {repr(tostring(t.source)), unpack(table.map(t, make_tree))}
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return t.type.."("..table.concat(args, ", ")..")"
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elseif replacements[t[1]] then
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return replacements[t[1]]
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else
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return t.type.."("..repr(tostring(t.source))..", "..repr(t[1].." \\0").."..string.format('%X', __MANGLE_INDEX))"
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end
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end
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local \%new_body = LuaCode(\%body.source,
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"__MANGLE_INDEX = (__MANGLE_INDEX or 0) + 1",
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"\nlocal tree = ", make_tree(\%body),
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"\nreturn nomsu:compile(tree)")
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return \(compile as: compile %actions to %new_body)
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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compile [remove action %action] to
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Lua ".."
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A\(=lua "string.as_lua_id(\(%action.stub))") = nil
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action [%tree as nomsu]
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=lua "nomsu:tree_to_nomsu(\%tree)"
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action [%tree as inline nomsu]
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=lua "nomsu:tree_to_nomsu(\%tree, true)"
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action [%tree as lua]
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=lua "nomsu:compile(\%tree)"
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action [%tree as lua expr]
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lua> ".."
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local lua = nomsu:compile(\%tree)
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if not lua.is_value then
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nomsu:compile_error(\%tree, "Invalid thing to convert to lua expr:\n%s")
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end
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return lua
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action [%tree as lua statements]
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=lua "nomsu:compile(\%tree):as_statements()"
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action [%tree as lua return]
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=lua "nomsu:compile(\%tree):as_statements('return ')"
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action [%var as lua identifier, %var as lua id]
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lua> ".."
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if type(\%var) == 'string' then return string.as_lua_id(\%var)
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elseif \%var.type == 'Var' then return string.as_lua_id(\%var[1])
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elseif \%var.type == 'Action' then return "A"..string.as_lua_id(\%var.stub)
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end
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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compile [%tree with %t -> %replacement] to
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Lua value ".."
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\(%tree as lua expr):map(function(\(%t as lua expr))
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\(%replacement as lua return)
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end)
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compile [declare locals in %code] to
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Lua value "\(%code as lua expr):declare_locals()"
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compile [declare locals %locals in %code] to
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Lua value "\(%code as lua expr):declare_locals(\(%locals as lua expr))"
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compile [add free vars %vars to %code] to
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Lua "\(%code as lua expr):add_free_vars(\(%vars as lua expr));"
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compile [remove free vars %vars from %code] to
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Lua "\(%code as lua expr):remove_free_vars(\(%vars as lua expr));"
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compile [%lua <-write %code, to %lua write %code] to: Lua "\(%lua as lua expr):append(\(%code as lua expr));"
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compile [quote %s] to
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Lua value ".."
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('"'..\(%s as lua expr):gsub("\\\\", "\\\\\\\\"):gsub("\n","\\\\n"):gsub('"', '\\\\"')..'"')
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compile [type of %obj] to: Lua value "type(\(%obj as lua expr))"
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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compile [parse %text] to
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Lua value ".."
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nomsu:parse(NomsuCode("\("\(%text.source)")", \(%text as lua expr)))
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compile [run %nomsu_code] to
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Lua value "nomsu:run(NomsuCode(\(quote "\(%nomsu_code.source)"), \(%nomsu_code as lua expr)))"
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action [run tree %tree, %tree as value]
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lua> ".."
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if \%tree.type == 'Text' and #\%tree == 1 and type(\%tree[1]) == 'string' then
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return \%tree[1]
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end
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local lua = LuaCode(\%tree.source, "return ",nomsu:compile(\%tree))
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return nomsu:run_lua(lua)
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compile [compile %block, compiled %block, %block compiled] to
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Lua value "nomsu:compile(\(%block as lua))"
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# Return statement is wrapped in a do..end block because Lua is unhappy if you
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put code after a return statement, unless you wrap it in a block.
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compile [return] to: Lua "do return; end"
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compile [return %return_value] to: Lua "do return \(%return_value as lua expr); end"
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# Literals
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compile [yes] to: Lua value "true"
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compile [no] to: Lua value "false"
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compile [nothing, nil, null] to: Lua value "nil"
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