# -*- Python -*-

# Configuration file for the 'lit' test runner.

import os
import sys
import re
import platform

try:
   import lit.util
   import lit.formats
except ImportError:
   pass

# name: The name of this test suite.
config.name = 'KLEE'

# testFormat: The test format to use to interpret tests.
config.test_format = lit.formats.ShTest(execute_external=False)

# suffixes: A list of file extensions to treat as test files
# Note this can be overridden by lit.local.cfg files
config.suffixes = ['.ll', '.c', '.cpp', '.pc']

# test_source_root: The root path where tests are located.
config.test_source_root = os.path.dirname(__file__)

# test_exec_root: The root path where tests should be run.
klee_obj_root = getattr(config, 'klee_obj_root', None)
klee_src_root = getattr(config, 'klee_src_root', None)

if klee_obj_root is not None:
    config.test_exec_root = os.path.join(klee_obj_root, 'test')

# Tweak the PATH to include the tool dir.
if klee_obj_root is not None:
    klee_tools_dir = getattr(config, 'klee_tools_dir', None)
    if not klee_tools_dir:
        lit.fatal('No KLEE tools dir set!')

    # Check LLVM tool directory
    llvm_tools_dir = getattr(config, 'llvm_tools_dir', None)
    if not llvm_tools_dir:
        lit.fatal('No LLVM tool directory set!')

    path = os.path.pathsep.join((llvm_tools_dir, klee_tools_dir, config.environment['PATH'] ))
    config.environment['PATH'] = path


# Propogate some environment variable to test environment.
def addEnv(name):
    if name in os.environ:
        config.environment[name] = os.environ[name]

addEnv('HOME')
addEnv('PWD')

# llvm-gcc on Ubuntu needs to be told where to look
# for headers. If user has these in their environment
# we should propagate to test environment
addEnv('C_INCLUDE_PATH')
addEnv('CPLUS_INCLUDE_PATH')

# Check that the object root is known.
if config.test_exec_root is None:
    lit.fatal('test execution root not set!')


# Add substitutions from lit.site.cfg
subs = [ 'llvmgcc', 'llvmgxx']
for name in subs:
    value = getattr(config, name, None)
    if value == None:
        lit.fatal('{0} is not set'.format(name))
    config.substitutions.append( ('%' + name, value))

# Add a substitution for lli.
config.substitutions.append( ('%lli', os.path.join(llvm_tools_dir, 'lli')) )

# Get KLEE and Kleaver specific parameters passed on llvm-lit cmd line
# e.g. llvm-lit --param klee_opts=--help
try:
  lit.params
except AttributeError:
  klee_extra_params = lit_config.params.get('klee_opts',"")
  kleaver_extra_params = lit_config.params.get('kleaver_opts',"")
else:
  klee_extra_params = lit.params.get('klee_opts',"")
  kleaver_extra_params = lit.params.get('kleaver_opts',"")

if len(klee_extra_params) != 0:
    print("Passing extra KLEE command line args: {0}".format(klee_extra_params))
if len(kleaver_extra_params) != 0:
    print("Passing extra Kleaver command line args: {0}".format(kleaver_extra_params))

# Set absolute paths and extra cmdline args for KLEE's tools
subs = [ ('%kleaver', 'kleaver', kleaver_extra_params), ('%klee','klee', klee_extra_params) ]
for s,basename,extra_args in subs:
    config.substitutions.append( ( s,
                                   "{0} {1}".format( os.path.join(klee_tools_dir, basename), extra_args ).strip()
                                 )
                               )

config.substitutions.append( ('%gentmp', os.path.join(klee_src_root, 'scripts/genTempFiles.sh')) )

# LLVM < 3.0 doesn't Support %T directive
if int(config.llvm_version_major) == 2:
    # This is a hack
    config.substitutions.append(('%T','Output'))

# Add feature for the LLVM version in use, so it can be tested in REQUIRES and
# XFAIL checks. We also add "not-XXX" variants, for the same reason.
known_llvm_versions = set(["2.9", "3.4", "3.5"])
current_llvm_version = "%s.%s" % (config.llvm_version_major,
                                  config.llvm_version_minor)
config.available_features.add("llvm-" + current_llvm_version)
for version in known_llvm_versions:
   if version != current_llvm_version:
      config.available_features.add("not-llvm-" + version)