module loader
import modelbuilder_base
+import ini
redef class ToolContext
# Option --path
fun parse_group(mgroup: MGroup): Array[MModule]
do
var res = new Array[MModule]
- visit_group(mgroup)
+ scan_group(mgroup)
for mg in mgroup.in_nesting.smallers do
for mp in mg.module_paths do
var nmodule = self.load_module(mp.filepath)
do
# First, look in groups
var c = mgroup
- while c != null do
- var dirname = c.filepath
- if dirname == null then break # virtual group
- if dirname.has_suffix(".nit") then break # singleton project
-
- # Second, try the directory to find a file
- var try_file = dirname + "/" + name + ".nit"
- if try_file.file_exists then
- var res = self.identify_file(try_file.simplify_path)
- assert res != null
- return res
- end
-
- # Third, try if the requested module is itself a group
- try_file = dirname + "/" + name + "/" + name + ".nit"
- if try_file.file_exists then
- var res = self.identify_file(try_file.simplify_path)
- assert res != null
- return res
- end
-
- # Fourth, try if the requested module is itself a group with a src
- try_file = dirname + "/" + name + "/src/" + name + ".nit"
- if try_file.file_exists then
- var res = self.identify_file(try_file.simplify_path)
- assert res != null
- return res
- end
-
- c = c.parent
+ if c != null then
+ var r = c.mproject.root
+ assert r != null
+ scan_group(r)
+ var res = r.mmodule_paths_by_name(name)
+ if res.not_empty then return res.first
end
# Look at some known directories
# If found, the path of the file is returned
private fun search_module_in_paths(location: nullable Location, name: String, lookpaths: Collection[String]): nullable ModulePath
do
- var candidate: nullable String = null
+ var res = new ArraySet[ModulePath]
for dirname in lookpaths do
- var try_file = (dirname + "/" + name + ".nit").simplify_path
- if try_file.file_exists then
- if candidate == null then
- candidate = try_file
- else if candidate != try_file then
- # try to disambiguate conflicting modules
- var abs_candidate = module_absolute_path(candidate)
- var abs_try_file = module_absolute_path(try_file)
- if abs_candidate != abs_try_file then
- toolcontext.error(location, "Error: conflicting module file for `{name}`: `{candidate}` `{try_file}`")
- end
- end
- end
- try_file = (dirname + "/" + name + "/" + name + ".nit").simplify_path
- if try_file.file_exists then
- if candidate == null then
- candidate = try_file
- else if candidate != try_file then
- # try to disambiguate conflicting modules
- var abs_candidate = module_absolute_path(candidate)
- var abs_try_file = module_absolute_path(try_file)
- if abs_candidate != abs_try_file then
- toolcontext.error(location, "Error: conflicting module file for `{name}`: `{candidate}` `{try_file}`")
- end
- end
- end
- try_file = (dirname + "/" + name + "/src/" + name + ".nit").simplify_path
- if try_file.file_exists then
- if candidate == null then
- candidate = try_file
- else if candidate != try_file then
- # try to disambiguate conflicting modules
- var abs_candidate = module_absolute_path(candidate)
- var abs_try_file = module_absolute_path(try_file)
- if abs_candidate != abs_try_file then
- toolcontext.error(location, "Error: conflicting module file for `{name}`: `{candidate}` `{try_file}`")
- end
- end
+ # Try a single module file
+ var mp = identify_file((dirname/"{name}.nit").simplify_path)
+ if mp != null then res.add mp
+ # Try the default module of a group
+ var g = get_mgroup((dirname/name).simplify_path)
+ if g != null then
+ scan_group(g)
+ res.add_all g.mmodule_paths_by_name(name)
end
end
- if candidate == null then return null
- return identify_file(candidate)
+ if res.is_empty then return null
+ if res.length > 1 then
+ toolcontext.error(location, "Error: conflicting module files for `{name}`: `{res.join(",")}`")
+ end
+ return res.first
end
# Cache for `identify_file` by realpath
# See `identify_file`.
var identified_files = new Array[ModulePath]
- # Identify a source file
- # Load the associated project and groups if required
+ # Identify a source file and load the associated project and groups if required.
+ #
+ # This method does what the user expects when giving an argument to a Nit tool.
#
- # Silently return `null` if `path` is not a valid module path.
+ # * If `path` is an existing Nit source file (with the `.nit` extension),
+ # then the associated ModulePath is returned
+ # * If `path` is a directory (with a `/`),
+ # then the ModulePath of its default module is returned (if any)
+ # * If `path` is a simple identifier (eg. `digraph`),
+ # then the main module of the project `digraph` is searched in `paths` and returned.
+ #
+ # Silently return `null` if `path` does not exists or cannot be identified.
fun identify_file(path: String): nullable ModulePath
do
# special case for not a nit file
if path.file_extension != "nit" then
# search dirless files in known -I paths
- if path.dirname == "" then
+ if not path.chars.has('/') then
var res = search_module_in_paths(null, path, self.paths)
if res != null then return res
end
path = candidate
end
+ # Does the file exists?
+ if not path.file_exists then
+ return null
+ end
+
# Fast track, the path is already known
var pn = path.basename(".nit")
var rp = module_absolute_path(path)
mgroup = new MGroup(pn, mproject, null) # same name for the root group
mgroup.filepath = path
mproject.root = mgroup
- toolcontext.info("found project `{pn}` at {path}", 2)
+ toolcontext.info("found singleton project `{pn}` at {path}", 2)
end
var res = new ModulePath(pn, path, mgroup)
return mgroups[rdp]
end
+ # Filter out non-directories
+ var stat = dirpath.file_stat
+ if stat == null or not stat.is_dir then
+ mgroups[rdp] = null
+ return null
+ end
+
# Hack, a group is determined by one of the following:
# * the presence of a honomymous nit file
# * the fact that the directory is named `src`
var pn = rdp.basename(".nit")
var mp = dirpath.join_path(pn + ".nit").simplify_path
+ # Check `project.ini` that indicate a project
+ var ini = null
+ var parent = null
+ var inipath = dirpath / "project.ini"
+ if inipath.file_exists then
+ ini = new ConfigTree(inipath)
+ end
+
# dirpath2 is the root directory
# dirpath is the src subdirectory directory, if any, else it is the same that dirpath2
var dirpath2 = dirpath
var mgroup
if parent == null then
# no parent, thus new project
+ if ini != null and ini.has_key("name") then pn = ini["name"]
var mproject = new MProject(pn, model)
mgroup = new MGroup(pn, mproject, null) # same name for the root group
mproject.root = mgroup
toolcontext.info("found project `{mproject}` at {dirpath}", 2)
+ mproject.ini = ini
else
mgroup = new MGroup(pn, parent.mproject, parent)
toolcontext.info("found sub group `{mgroup.full_name}` at {dirpath}", 2)
return mdoc
end
- # Force the identification of all ModulePath of the group and sub-groups.
- fun visit_group(mgroup: MGroup) do
+ # Force the identification of all ModulePath of the group and sub-groups in the file system.
+ #
+ # When a group is scanned, its sub-groups hierarchy is filled (see `MGroup::in_nesting`)
+ # and the potential modules (and nested modules) are identified (see `MGroup::module_paths`).
+ #
+ # Basically, this recursively call `get_mgroup` and `identify_file` on each directory entry.
+ #
+ # No-op if the group was already scanned (see `MGroup::scanned`).
+ fun scan_group(mgroup: MGroup) do
+ if mgroup.scanned then return
+ mgroup.scanned = true
var p = mgroup.filepath
+ # a virtual group has nothing to scan
+ if p == null then return
for f in p.files do
var fp = p/f
var g = get_mgroup(fp)
- if g != null then visit_group(g)
+ # Recursively scan for groups of the same project
+ if g != null and g.mproject == mgroup.mproject then
+ scan_group(g)
+ end
identify_file(fp)
end
end
redef fun to_s do return filepath
end
+redef class MProject
+ # The associated `.ini` file, if any
+ #
+ # The `ini` file is given as is and might contain invalid or missing information.
+ #
+ # Some projects, like stand-alone projects or virtual projects have no `ini` file associated.
+ var ini: nullable ConfigTree = null
+end
+
redef class MGroup
# Modules paths associated with the group
var module_paths = new Array[ModulePath]
# * it has a documentation
fun is_interesting: Bool
do
- return module_paths.length > 1 or mmodules.length > 1 or not in_nesting.direct_smallers.is_empty or mdoc != null
+ return module_paths.length > 1 or
+ mmodules.length > 1 or
+ not in_nesting.direct_smallers.is_empty or
+ mdoc != null or
+ (mmodules.length == 1 and default_mmodule == null)
end
+ # Are files and directories in self scanned?
+ #
+ # See `ModelBuilder::scan_group`.
+ var scanned = false
+
+ # Return the modules in self and subgroups named `name`.
+ #
+ # If `self` is not scanned (see `ModelBuilder::scan_group`) the
+ # results might be partial.
+ fun mmodule_paths_by_name(name: String): Array[ModulePath]
+ do
+ var res = new Array[ModulePath]
+ for g in in_nesting.smallers do
+ for mp in g.module_paths do
+ if mp.name == name then
+ res.add mp
+ end
+ end
+ end
+ return res
+ end
end
redef class SourceFile
nitlanguage / nit.git / blobdiff