# Tests for JNI code.

# Compile a single C file and produce a .so file.  OPTIONS is a list
# of options to pass to the compiler.  Returns 0 on failure, 1 on
# success.
proc gcj_jni_compile_c_to_so {file {options {}}} {
  global srcdir
  global host_triplet
  verbose "options: $options"
  set options_cxx $options
  set options ""

# apple uses a different extension for shared/dynamic libraries
# so we check against powerpc-apple-darwin and set them to
# dylib, else we assume it's .so

  if { [ regexp {powerpc-apple-darwin} $host_triplet] } {
      set so_extension "dylib"
      set so_flag "-dynamiclib"
  } else {
      set so_extension "so"
      set so_flag "-shared"
  }
  set filename [file tail $file]
  set name [file rootname $filename]
  set soname lib${name}.${so_extension}

  lappend options "additional_flags=${so_flag} -fPIC"
  # Find the generated header.
  lappend options "additional_flags=-I. -I.."

  # Ensure that the generated header has correct prototypes.
  set cfile [file rootname $file].c
  if { [file exists $cfile]} {
    # This option is only valid for C sources.
    lappend options "additional_flags=-Wmissing-prototypes"
  }

  # Find jni.h.
  lappend options "additional_flags=-I$srcdir/../include"

  # Append C++ options
  lappend options "additional_flags=$options_cxx"

  set x [libjava_prune_warnings \
	   [target_compile $file $soname executable $options]]
  if {$x != ""} {
    verbose "target_compile failed: $x" 2
    fail "$filename compilation"
    return 0
  }

  pass "$filename compilation"
  return 1
}

# Build a header file from a .class file.  Return 0 on failure.
proc gcj_jni_build_header {file} {
  set gcjh [find_gcjh]
  set file [file rootname $file]
  set x [string trim [libjava_prune_warnings \
			[lindex [local_exec "$gcjh -jni $file" "" "" 300] 1]]]
  if {$x != ""} {
    verbose "local_exec failed: $x" 2
    fail "$file header generation"
    return 0
  }

  pass "$file header generation"
  return 1
}

# Do all the work for a single JNI test.  Return 0 on failure.
proc gcj_jni_test_one {file} {
  global runtests
  global host_triplet
  global INTERPRETER

# apple uses a different extension for shared/dynamic libraries
# so we check against powerpc-apple-darwin and set them to 
# dylib, else we assume it's .so

  if { [ regexp {powerpc-apple-darwin} $host_triplet] } {
      set so_extension "dylib"
  } else {
      set so_extension "so"
  }

  # The base name.  We use it for several purposes.
  set main [file rootname [file tail $file]]
  if {! [runtest_file_p $runtests $main]} {
    # Simply skip it.
    return 1
  }

  if {! [bytecompile_file $file [pwd]]} {
    fail "bytecompile $file"
    # FIXME - should use `untested' on all remaining tests.
    # But that is hard.
    return 0
  }
  pass "bytecompile $file"

  set bytefile [file rootname [file tail $file]].class
  if {! [gcj_jni_build_header $bytefile]} {
    # FIXME
    return 0
  }

  set cfile [file rootname $file].c
  set cxxflags ""
  set cxxldlibflags {}
  # If there is no `.c' file, assume there is a `.cc' file.
  if {! [file exists $cfile]} {
    set cfile [file rootname $file].cc

    set cxxflaglist {}
    foreach arg [split [libjava_find_lib libstdc++-v3/src stdc++] " "] {
      switch -glob -- $arg {
	"-L*" {
	  set arg [string range $arg 2 end]
	  lappend cxxldlibflags $arg
	  # Strip the `.libs' directory; we link with libtool which
	  # doesn't need it.
	  set arg "-L[file dirname $arg]"
	}
      }
      lappend cxxflaglist $arg
      # In case the libstdc++ is not installed yet, we pass the build
      # directory of it to the cxxflaglist.
      lappend cxxflaglist "-L$cxxldlibflags"
    }

    # Darwin does not yet have a libgcc_s.dylib library.
    # So we add it here. If the libgcc_s is installed, the libstdc++
    # would pick it up.
    if { [ regexp {powerpc-apple-darwin} $host_triplet] } {
	lappend cxxflaglist "-lgcc_s -lstdc++"
    } else {
	lappend cxxflaglist "-lstdc++"
    }
  
    set cxxflags [join $cxxflaglist]
  }

  if {! [gcj_jni_compile_c_to_so $cfile $cxxflags]} {
    # FIXME
    return 0
  }

  set args [list "additional_flags=-fjni"]
  if {! [gcj_link $main $main $file $args]} {
    # FIXME
    return 0
  }

  set resultfile [file rootname $file].out

  if {! [gcj_invoke $main $resultfile $cxxldlibflags]} {
    # FIXME
    return 0
  }

  # We purposely ignore errors here; we still want to run the other
  # appropriate tests.
  set errname [file rootname [file tail $file]]
  set gij [libjava_find_gij]
  # libjava_find_gij will return `gij' if it couldn't find the
  # program; in this case we want to skip the test.
  # If the libraries are not installed yet, we have to pass them via
  # cxxldlibflags to libjava_invoke.
    if {$INTERPRETER == "yes" && $gij != "gij"} {
	libjava_invoke $errname "gij test" opts $gij \
	    "" $resultfile $cxxldlibflags $main
  }

  # When we succeed we remove all our clutter.
  eval gcj_cleanup [glob -nocomplain -- ${main}.*] [list $main lib${main}.${so_extension}]

  return 1
}

# Run the JNI tests.
proc gcj_jni_run {} {
  global srcdir subdir
  global build_triplet host_triplet

  # For now we only test JNI on native builds.
  if {$build_triplet == $host_triplet} {
    catch { lsort [glob -nocomplain ${srcdir}/${subdir}/*.java] } srcfiles

    foreach x $srcfiles {
      gcj_jni_test_one $x
    }
  } else {
    verbose "JNI tests not run in cross-compilation environment"
  }
}

gcj_jni_run