# Copyright 2022 Mattia Giambirtone & All Contributors
#
# 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.

import strformat


const BYTECODE_MARKER* = "PEON_BYTECODE"
const HEAP_GROW_FACTOR* = 2 # How much extra memory to allocate for dynamic arrays and garbage collection when resizing
when HEAP_GROW_FACTOR <= 1:
    {.fatal: "Heap growth factor must be > 1".}
const PEON_VERSION* = (major: 0, minor: 1, patch: 0)
const PEON_RELEASE* = "alpha"
const PEON_COMMIT_HASH* = "e90ac2f4eb7ea5b95467bae5439cd21d2e89a812"
when len(PEON_COMMIT_HASH) != 40:
    {.fatal: "The git commit hash must be exactly 40 characters long".}
const PEON_BRANCH* = "master"
when len(PEON_BRANCH) > 255:
    {.fatal: "The git branch name's length must be less than or equal to 255 characters".}
const DEBUG_TRACE_VM* = true # Traces VM execution
const DEBUG_TRACE_GC* = false # Traces the garbage collector (TODO)
const DEBUG_TRACE_ALLOCATION* = false # Traces memory allocation/deallocation
const DEBUG_TRACE_COMPILER* = false # Traces the compiler
const PEON_VERSION_STRING* = &"Peon {PEON_VERSION.major}.{PEON_VERSION.minor}.{PEON_VERSION.patch} {PEON_RELEASE} ({PEON_BRANCH}, {CompileDate}, {CompileTime}, {PEON_COMMIT_HASH[0..8]}) [Nim {NimVersion}] on {hostOS} ({hostCPU})"
const HELP_MESSAGE* = """The peon programming language, Copyright (C) 2022 Mattia Giambirtone & All Contributors

This program is free software, see the license distributed with this program or check
http://www.apache.org/licenses/LICENSE-2.0 for more info.

Basic usage
-----------

$ peon             Opens an interactive session (REPL)
$ peon file.pn     Runs the given Peon source file

Command-line options
--------------------

-h, --help          Shows this help text and exits
-v, --version       Prints the peon version number and exits
-s, --string        Executes the passed string as if it was a file
-i, --interactive   Enables interactive mode, which opens a REPL session after execution of a file or source string
-c, --nocache       Disables dumping the result of bytecode compilation to files for caching
-d, --cache-delay   Configures the bytecode cache invalidation threshold, in minutes (defaults to 60)
"""