# Copyright 2014 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import("//sky/engine/config.gni")

# All paths in this file should be absolute so targets in any directory can use
# them without worrying about the current directory.
_scripts_dir = "//sky/engine/build/scripts"

scripts_for_in_files = [
  # jinja2/__init__.py contains version string, so sufficient as
  # dependency for whole jinja2 package
  "//third_party/jinja2/__init__.py",
  "//third_party/markupsafe/__init__.py",  # jinja2 dep
  "$_scripts_dir/hasher.py",
  "$_scripts_dir/in_file.py",
  "$_scripts_dir/in_generator.py",
  "$_scripts_dir/license.py",
  "$_scripts_dir/name_macros.py",
  "$_scripts_dir/name_utilities.py",
  "$_scripts_dir/template_expander.py",
  "$_scripts_dir/templates/macros.tmpl",
]

css_properties_files =
    scripts_for_in_files + [ "$_scripts_dir/css_properties.py" ]

make_event_factory_files =
    scripts_for_in_files + [ "$_scripts_dir/make_event_factory.py" ]

make_names_files = scripts_for_in_files + [
                     "$_scripts_dir/make_names.py",
                     "$_scripts_dir/templates/MakeNames.cpp.tmpl",
                     "$_scripts_dir/templates/MakeNames.h.tmpl",
                   ]

make_qualified_names_files =
    scripts_for_in_files + [
      "$_scripts_dir/make_qualified_names.py",
      "$_scripts_dir/templates/MakeQualifiedNames.cpp.tmpl",
      "$_scripts_dir/templates/MakeQualifiedNames.h.tmpl",
    ]

make_element_factory_files =
    make_qualified_names_files + [
      "$_scripts_dir/make_element_factory.py",
    ]

# The executables are relative to the build directory. Don't rebase it because
# on Posix we want to run the system one on the path.
if (is_win) {
  gperf_exe = rebase_path("//third_party/gperf/bin/gperf.exe", root_build_dir)
  bison_exe = rebase_path("//third_party/bison/bin/bison.exe", root_build_dir)
} else {
  gperf_exe = "gperf"
  bison_exe = "bison"
}

# Templates --------------------------------------------------------------------

_sky_gen_dir = "$root_gen_dir/sky"

# The GYP target make_core_generated has some deps and a bunch of actions on
# it, which means that the deps will be resolved before the actions run. Here
# we have separate targets for each action. Its not clear which actions depend
# on these deps, so for GYP compatibility, all of the below actions should
# depend on the following deps.
make_core_generated_deps = [
  "//sky/engine/core:generated_testing_idls",
  "//sky/engine/core:core_event_interfaces",
]

# Template to run most of scripts that process "*.in" files.
#   script: script to run.
#   in_files: ".in" files to pass to the script
#   other_inputs: (optional) other input files the script depends on
#                 defaults to "scripts_for_in_files" (if specified, we assume
#                 that the contents of "scripts_for_in_files" are included in
#                 this list specified since this is how these lists are filled
#                 from the GYP build.
#   outputs: expected results. Note that the directory of the 0th item in this
#            list will be taken to be the output path.
#   other_args: (optional) other arguments to pass to the script.
template("process_in_files") {
  generator_target_name = target_name + "__generator"

  action(generator_target_name) {
    script = invoker.script

    inputs = invoker.in_files
    if (defined(invoker.other_inputs)) {
      inputs += invoker.other_inputs
    } else {
      inputs += scripts_for_in_files
    }
    outputs = invoker.outputs

    # Extract the directory to write files to.
    output_dir = get_path_info(outputs[0], "dir")

    args = rebase_path(invoker.in_files, root_build_dir) + [
             "--output_dir",
             rebase_path(output_dir, root_build_dir),
           ]
    if (defined(invoker.other_args)) {
      args += invoker.other_args
    }

    deps = make_core_generated_deps
  }

  source_set(target_name) {
    sources = invoker.outputs

    configs += [
      "//build/config/compiler:wexit_time_destructors",
      "//sky/engine:inside_blink",
      "//sky/engine:config",
    ]

    deps = [
      ":$generator_target_name",
    ]
    if (defined(invoker.deps)) {
      deps += invoker.deps
    }
  }
}

# Template for scripts using css_properties.py. This is a special case of
# process_in_files.
#   outputs: expected results
template("css_properties") {
  process_in_files(target_name) {
    script = invoker.script
    in_files = [ "css/CSSProperties.in" ]
    other_inputs = css_properties_files
    if (defined(invoker.other_inputs)) {
      other_inputs += invoker.other_inputs
    }
    other_args = [
      "--gperf",
      gperf_exe,
    ]
    outputs = invoker.outputs

    deps = [
      "//sky/engine/wtf",
    ]

    if (defined(invoker.deps)) {
      deps += invoker.deps
    }
  }
}

# Template to run the make_names script. This is a special case of
# process_in_files.
#   in_files: files to pass to the script
#   outputs: expected results
template("make_names") {
  process_in_files(target_name) {
    script = "//sky/engine/build/scripts/make_names.py"
    in_files = invoker.in_files
    other_inputs = make_names_files
    outputs = invoker.outputs

    deps = [
      "//sky/engine/wtf",
    ]

    if (defined(invoker.deps)) {
      deps += invoker.deps
    }
  }
}

# Template to run the make_qualified_names script. This is a special case of
# process_in_files.
#   in_files: list of ".in" files to process.
#   outputs: list of output files
template("make_qualified_names") {
  process_in_files(target_name) {
    script = "//sky/engine/build/scripts/make_qualified_names.py"
    in_files = invoker.in_files
    other_inputs = make_qualified_names_files
    outputs = invoker.outputs

    deps = [
      "//sky/engine/wtf",
    ]

    if (defined(invoker.deps)) {
      deps += invoker.deps
    }
  }
}

# Calls the make_event_factory script. This is a special case of
# process_in_files.
#   in_files: list of ".in" files to process.
#   outputs: list of output files
template("make_event_factory") {
  process_in_files(target_name) {
    script = "//sky/engine/build/scripts/make_event_factory.py"
    in_files = invoker.in_files
    other_inputs = make_event_factory_files
    outputs = invoker.outputs

    deps = [
      "//sky/engine/wtf",
    ]

    if (defined(invoker.deps)) {
      deps += invoker.deps
    }
  }
}

# Calls the make_token_matcher script.
#   input_file: The "*-in.cpp" file
#   output_file: The output file
template("make_token_matcher") {
  action(target_name) {
    script = "//sky/engine/build/scripts/make_token_matcher.py"

    inputs = scripts_for_in_files + [ invoker.input_file ]
    outputs = [
      invoker.output_file,
    ]

    args = [
      rebase_path(invoker.input_file, root_build_dir),
      rebase_path(invoker.output_file, root_build_dir),
    ]

    deps = make_core_generated_deps
  }
}