// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

use std::from_str::FromStr;
use std::fmt;
use regex::Regex;

#[deriving(Clone, PartialEq)]
pub enum Mode {
    CompileFail,
    RunFail,
    RunPass,
    Pretty,
    DebugInfoGdb,
    DebugInfoLldb,
    Codegen
}

impl FromStr for Mode {
    fn from_str(s: &str) -> Option<Mode> {
        match s {
          "compile-fail" => Some(CompileFail),
          "run-fail" => Some(RunFail),
          "run-pass" => Some(RunPass),
          "pretty" => Some(Pretty),
          "debuginfo-lldb" => Some(DebugInfoLldb),
          "debuginfo-gdb" => Some(DebugInfoGdb),
          "codegen" => Some(Codegen),
          _ => None,
        }
    }
}

impl fmt::Show for Mode {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        let msg = match *self {
            CompileFail => "compile-fail",
            RunFail => "run-fail",
            RunPass => "run-pass",
            Pretty => "pretty",
            DebugInfoGdb => "debuginfo-gdb",
            DebugInfoLldb => "debuginfo-lldb",
            Codegen => "codegen",
        };
        msg.fmt(f)
    }
}

#[deriving(Clone)]
pub struct Config {
    // The library paths required for running the compiler
    pub compile_lib_path: String,

    // The library paths required for running compiled programs
    pub run_lib_path: String,

    // The rustc executable
    pub rustc_path: Path,

    // The clang executable
    pub clang_path: Option<Path>,

    // The llvm binaries path
    pub llvm_bin_path: Option<Path>,

    // The directory containing the tests to run
    pub src_base: Path,

    // The directory where programs should be built
    pub build_base: Path,

    // Directory for auxiliary libraries
    pub aux_base: Path,

    // The name of the stage being built (stage1, etc)
    pub stage_id: String,

    // The test mode, compile-fail, run-fail, run-pass
    pub mode: Mode,

    // Run ignored tests
    pub run_ignored: bool,

    // Only run tests that match this filter
    pub filter: Option<Regex>,

    // Precompiled regex for finding expected errors in cfail
    pub cfail_regex: Regex,

    // Write out a parseable log of tests that were run
    pub logfile: Option<Path>,

    // Write out a json file containing any metrics of the run
    pub save_metrics: Option<Path>,

    // Write and ratchet a metrics file
    pub ratchet_metrics: Option<Path>,

    // Percent change in metrics to consider noise
    pub ratchet_noise_percent: Option<f64>,

    // "Shard" of the testsuite to pub run: this has the form of
    // two numbers (a,b), and causes only those tests with
    // positional order equal to a mod b to run.
    pub test_shard: Option<(uint,uint)>,

    // A command line to prefix program execution with,
    // for running under valgrind
    pub runtool: Option<String>,

    // Flags to pass to the compiler when building for the host
    pub host_rustcflags: Option<String>,

    // Flags to pass to the compiler when building for the target
    pub target_rustcflags: Option<String>,

    // Run tests using the JIT
    pub jit: bool,

    // Target system to be tested
    pub target: String,

    // Host triple for the compiler being invoked
    pub host: String,

    // Version of GDB
    pub gdb_version: Option<String>,

    // Path to the android tools
    pub android_cross_path: Path,

    // Extra parameter to run adb on arm-linux-androideabi
    pub adb_path: String,

    // Extra parameter to run test suite on arm-linux-androideabi
    pub adb_test_dir: String,

    // status whether android device available or not
    pub adb_device_status: bool,

    // the path containing LLDB's Python module
    pub lldb_python_dir: Option<String>,

    // Explain what's going on
    pub verbose: bool
}