japl/src/stdlib.nim

54 lines
1.6 KiB
Nim

# Copyright 2020 Mattia Giambirtone
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# Implementations of builtin functions and modules
import vm
import types/native
import types/baseObject
import types/japlNil
import types/numbers
import types/methods
import times
proc natPrint(args: seq[ptr Obj]): tuple[ok: bool, result: ptr Obj] =
## Native function print
## Prints an object representation
## to stdout. If more than one argument
## is passed, they will be printed separated
## by a space
var res = ""
for arg in args:
res = res & arg.stringify() & " "
echo res
return (ok: true, result: asNil())
proc natClock(args: seq[ptr Obj]): tuple[ok: bool, result: ptr Obj] =
## Native function clock
## Returns the current unix
## time (also known as epoch)
## with subsecond precision
# TODO: Move this to a separate module once we have imports
result = (ok: true, result: getTime().toUnixFloat().asFloat())
template stdlibInit*(vm: VM) =
vm.defineGlobal("print", newNative("print", natPrint, -1))
vm.defineGlobal("clock", newNative("clock", natClock, 0))