# See the License for the specific language governing permissions and
# limitations under the License.
-# This package is used to load a metamodel
+# This module is used to load a metamodel
package mmloader
import metamodel
import opts
-import location
+import toolcontext
-class Message
-special Comparable
- redef type OTHER: Message
-
- readable var _location: nullable Location
- readable var _text: String
-
- redef fun <(other: OTHER): Bool do
- if location == null then return true
- if other.location == null then return false
-
- return location.as(not null) < other.location.as(not null)
- end
-
- redef fun to_s: String do
- var l = location
- if l == null then
- return text
- else
- return "{l}: {text}"
- end
- end
-end
-
-# Global context for tools
-class ToolContext
-special MMContext
- # Number of errors
- readable var _error_count: Int = 0
-
- # Number of warnings
- readable var _warning_count: Int = 0
-
- # Directory where to generate log files
- readable var _log_directory: String = "logs"
-
- # Messages
- var _messages: Array[Message] = new Array[Message]
- var _message_sorter: ComparableSorter[Message] = new ComparableSorter[Message]
-
- fun check_errors
- do
- if _messages.length > 0 then
- _message_sorter.sort(_messages)
-
- for m in _messages do
- stderr.write("{m}\n")
- end
-
- _messages.clear
- end
-
- if error_count > 0 then exit(1)
- end
-
- # Display an error
- fun error(l: nullable Location, s: String)
- do
- _messages.add(new Message(l,s))
- _error_count = _error_count + 1
- end
-
- # Add an error, show errors and quit
- fun fatal_error(l: nullable Location, s: String)
- do
- error(l,s)
- check_errors
- end
-
- # Display a warning
- fun warning(l: nullable Location, s: String)
- do
- if _opt_warn.value == 0 then return
- _messages.add(new Message(l,s))
- if _opt_warn.value == 1 then
- _warning_count = _warning_count + 1
- else
- _error_count = _error_count + 1
- end
- end
-
- # Display an info
- fun info(s: String, level: Int)
- do
- if level <= verbose_level then
- print "{s}"
- end
- end
+redef class ToolContext
+ super MMContext
# Paths where to locate modules files
readable var _paths: Array[String] = new Array[String]
# List of module loaders
var _loaders: Array[ModuleLoader] = new Array[ModuleLoader]
-
- # Global OptionContext
- readable var _option_context: OptionContext = new OptionContext
-
- # Option --warn
- readable var _opt_warn: OptionCount = new OptionCount("Show warnings", "-W", "--warn")
# Option --path
readable var _opt_path: OptionArray = new OptionArray("Set include path for loaders (may be used more than once)", "-I", "--path")
- # Option --log
- readable var _opt_log: OptionBool = new OptionBool("Generate various log files", "--log")
-
- # Option --log-dir
- readable var _opt_log_dir: OptionString = new OptionString("Directory where to generate log files", "--log-dir")
-
# Option --only-metamodel
readable var _opt_only_metamodel: OptionBool = new OptionBool("Stop after meta-model processing", "--only-metamodel")
# Option --only-parse
readable var _opt_only_parse: OptionBool = new OptionBool("Only proceed to parse step of loaders", "--only-parse")
- # Option --help
- readable var _opt_help: OptionBool = new OptionBool("Show Help (This screen)", "-h", "-?", "--help")
-
- # Option --version
- readable var _opt_version: OptionBool = new OptionBool("Show version and exit", "--version")
-
- # Option --verbose
- readable var _opt_verbose: OptionCount = new OptionCount("Verbose", "-v", "--verbose")
-
- # Verbose level
- readable var _verbose_level: Int = 0
-
- init
+ redef init
do
super
- option_context.add_option(opt_warn, opt_path, opt_log, opt_log_dir, opt_only_parse, opt_only_metamodel, opt_help, opt_version, opt_verbose)
+ option_context.add_option(opt_path, opt_only_parse, opt_only_metamodel)
end
# Parse and process the options given on the command line
- fun process_options
+ redef fun process_options
do
- # init options
- option_context.parse(args)
-
- # Set verbose level
- _verbose_level = opt_verbose.value
+ super
# Setup the paths value
paths.append(opt_path.value)
- var path_env = once ("NIT_PATH".to_symbol).environ
- if not path_env.is_empty then
+ var path_env = "NIT_PATH".environ
+ if not path_env.is_empty then
paths.append(path_env.split_with(':'))
end
- path_env = once ("NIT_DIR".to_symbol).environ
- if not path_env.is_empty then
+ path_env = "NIT_DIR".environ
+ if not path_env.is_empty then
var libname = "{path_env}/lib"
if libname.file_exists then paths.add(libname)
end
var libname = "{sys.program_name.dirname}/../lib"
- if libname.file_exists then paths.add(libname)
-
- if opt_log_dir.value != null then _log_directory = opt_log_dir.value.as(not null)
- if _opt_log.value then
- # Make sure the output directory exists
- log_directory.mkdir
- end
+ if libname.file_exists then paths.add(libname.simplify_path)
end
# Load and process a module in a directory (or a parent directory).
private fun try_to_load(module_name: Symbol, dir: MMDirectory): nullable MMModule
do
# Look in the module directory
- for m in dir.modules do
+ for m in dir.modules.values do
if m.name == module_name then return m
end
end
# A load handler know how to load a specific module type
-class ModuleLoader
+interface ModuleLoader
# Type of module loaded by the loader
type MODULE: MMModule
# Try to load a new module directory
fun try_to_load_dir(dirname: Symbol, parent_dir: MMDirectory): nullable MMDirectory
do
- var fname = "{parent_dir.path}/{dirname}/"
+ var fname = "{parent_dir.path}/{dirname}"
if not fname.file_exists then return null
var dir = new MMDirectory(parent_dir.full_name_for(dirname), fname, parent_dir)
# filename is the result of can_handle
fun load_and_process_module(context: ToolContext, module_name: Symbol, dir: MMDirectory): MODULE
do
- var filename = "{dir.path}/{module_name}.{file_type}"
+ var filename = "{dir.path}/{module_name}.{file_type}".simplify_path
var m = load_module(context, module_name, dir, filename)
if not context.opt_only_parse.value then process_metamodel(context, m)
return m
protected fun parse_file(context: ToolContext, file: IFStream, filename: String, module_name: Symbol, dir: MMDirectory): MODULE is abstract
# Process a parsed module
- protected fun process_metamodel(context: ToolContext, module: MODULE) is abstract
-end
-
-redef class MMModule
- # Recurcivelty process an import modules
- fun import_supers_modules(names: Collection[Symbol])
- do
- var c = context
- assert c isa ToolContext
- var supers = new Array[MMModule]
- for n in names do
- var m = c.get_module(n, self)
- supers.add(m)
- end
- c.add_module(self,supers)
- end
+ protected fun process_metamodel(context: ToolContext, mod: MODULE) is abstract
end
nitlanguage / nit.git / blobdiff