module loader
import modelbuilder_base
+import ini
redef class ToolContext
# Option --path
end
var nit_dir = toolcontext.nit_dir
- var libname = "{nit_dir}/lib"
+ var libname = nit_dir/"lib"
+ if libname.file_exists then paths.add(libname)
+ libname = nit_dir/"contrib"
if libname.file_exists then paths.add(libname)
end
if nmodule == null then continue # Skip error
# Load imported module
build_module_importation(nmodule)
-
- mmodules.add(nmodule.mmodule.as(not null))
+ var mmodule = nmodule.mmodule
+ if mmodule == null then continue # skip error
+ mmodules.add mmodule
end
var time1 = get_time
self.toolcontext.info("*** END PARSE: {time1-time0} ***", 2)
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)
if nmodule == null then continue # Skip error
# Load imported module
build_module_importation(nmodule)
-
- res.add(nmodule.mmodule.as(not null))
+ var mmodule = nmodule.mmodule
+ if mmodule == null then continue # Skip error
+ res.add mmodule
end
end
return res
end
# Load a bunch of modules and groups.
- # Each name can be a module or a group.
- # If it is a group then recursively all its modules are parsed.
+ #
+ # Each name can be:
+ #
+ # * a path to a module, a group or a directory of packages.
+ # * a short name of a module or a group that are looked in the `paths` (-I)
+ #
+ # Then, for each entry, if it is:
+ #
+ # * a module, then is it parser and returned.
+ # * a group then recursively all its modules are parsed.
+ # * a directory of packages then all the modules of all packages are parsed.
+ # * else an error is displayed.
+ #
# See `parse` for details.
fun parse_full(names: Sequence[String]): Array[MModule]
do
self.toolcontext.info("*** PARSE ***", 1)
var mmodules = new ArraySet[MModule]
for a in names do
+ # Case of a group
var mgroup = self.get_mgroup(a)
if mgroup != null then
mmodules.add_all parse_group(mgroup)
continue
end
+
+ # Case of a directory that is not a group
+ var stat = a.to_path.stat
+ if stat != null and stat.is_dir then
+ self.toolcontext.info("look in directory {a}", 2)
+ var fs = a.files
+ # Try each entry as a group or a module
+ for f in fs do
+ var af = a/f
+ mgroup = get_mgroup(af)
+ if mgroup != null then
+ mmodules.add_all parse_group(mgroup)
+ continue
+ end
+ var mp = identify_file(af)
+ if mp != null then
+ var nmodule = self.load_module(af)
+ if nmodule == null then continue # Skip error
+ build_module_importation(nmodule)
+ var mmodule = nmodule.mmodule
+ if mmodule == null then continue # Skip error
+ mmodules.add mmodule
+ else
+ self.toolcontext.info("ignore file {af}", 2)
+ end
+ end
+ continue
+ end
+
var nmodule = self.load_module(a)
if nmodule == null then continue # Skip error
# Load imported module
build_module_importation(nmodule)
-
- mmodules.add(nmodule.mmodule.as(not null))
+ var mmodule = nmodule.mmodule
+ if mmodule == null then continue # Skip error
+ mmodules.add mmodule
end
var time1 = get_time
self.toolcontext.info("*** END PARSE: {time1-time0} ***", 2)
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
-
- c = c.parent
+ if c != null then
+ var r = c.mpackage.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
var lookpaths = self.paths
- # Look in the directory of the group project also (even if not explicitly in the path)
+ # Look in the directory of the group package also (even if not explicitly in the path)
if mgroup != null then
# path of the root group
- var dirname = mgroup.mproject.root.filepath
+ var dirname = mgroup.mpackage.root.filepath
if dirname != null then
dirname = dirname.join_path("..").simplify_path
if not lookpaths.has(dirname) and dirname.file_exists then
if candidate == null then
if mgroup != null then
- error(anode, "Error: cannot find module {name} from {mgroup.name}. tried {lookpaths.join(", ")}")
+ error(anode, "Error: cannot find module `{name}` from `{mgroup.name}`. Tried: {lookpaths.join(", ")}.")
else
- error(anode, "Error: cannot find module {name}. tried {lookpaths.join(", ")}")
+ error(anode, "Error: cannot find module `{name}`. Tried: {lookpaths.join(", ")}.")
end
return null
end
do
var path = search_mmodule_by_name(anode, mgroup, name)
if path == null then return null # Forward error
+ return load_module_path(path)
+ end
+
+ # Load and process importation of a given ModulePath.
+ #
+ # Basically chains `load_module` and `build_module_importation`.
+ fun load_module_path(path: ModulePath): nullable MModule
+ do
var res = self.load_module(path.filepath)
if res == null then return null # Forward error
# Load imported module
build_module_importation(res)
- return res.mmodule.as(not null)
+ return res.mmodule
end
# Search a module `name` from path `lookpaths`.
# 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
+ # 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
- 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
+ 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
+
+ # Search groups named `name` from paths `lookpaths`.
+ private fun search_group_in_paths(name: String, lookpaths: Collection[String]): ArraySet[MGroup]
+ do
+ var res = new ArraySet[MGroup]
+ for dirname in lookpaths do
+ # try a single group directory
+ var mg = get_mgroup(dirname/name)
+ if mg != null then
+ res.add mg
end
end
- if candidate == null then return null
- return identify_file(candidate)
+ return res
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 package and groups if required.
+ #
+ # This method does what the user expects when giving an argument to a Nit tool.
+ #
+ # * 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 package `digraph` is searched in `paths` and returned.
#
- # Silently return `null` if `path` is not a valid module path.
+ # 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)
var mgroup = get_mgroup(mgrouppath)
if mgroup == null then
- # singleton project
- var mproject = new MProject(pn, model)
- mgroup = new MGroup(pn, mproject, null) # same name for the root group
+ # singleton package
+ var mpackage = new MPackage(pn, model)
+ mgroup = new MGroup(pn, mpackage, null) # same name for the root group
mgroup.filepath = path
- mproject.root = mgroup
- toolcontext.info("found project `{pn}` at {path}", 2)
+ mpackage.root = mgroup
+ toolcontext.info("found singleton package `{pn}` at {path}", 2)
+
+ # Attach homonymous `ini` file to the package
+ var inipath = path.dirname / "{pn}.ini"
+ if inipath.file_exists then
+ var ini = new ConfigTree(inipath)
+ mpackage.ini = ini
+ end
end
var res = new ModulePath(pn, path, mgroup)
# Return the mgroup associated to a directory path.
# If the directory is not a group null is returned.
+ #
+ # Note: `paths` is also used to look for mgroups
fun get_mgroup(dirpath: String): nullable MGroup
do
+ if not dirpath.file_exists then do
+ for p in paths do
+ var try = p / dirpath
+ if try.file_exists then
+ dirpath = try
+ break label
+ end
+ end
+ return null
+ end label
+
var rdp = module_absolute_path(dirpath)
if mgroups.has_key(rdp) then
return mgroups[rdp]
end
- # Hack, a group is determined by:
- # * the presence of a honomymous nit file
- # * the fact that the directory is named `src`
+ # Filter out non-directories
+ var stat = dirpath.file_stat
+ if stat == null or not stat.is_dir then
+ mgroups[rdp] = null
+ return null
+ end
+
+ # By default, the name of the package or group is the base_name of the directory
var pn = rdp.basename(".nit")
- var mp = dirpath.join_path(pn + ".nit").simplify_path
-
- var dirpath2 = dirpath
- if not mp.file_exists then
- if pn == "src" then
- # With a src directory, the group name is the name of the parent directory
- dirpath2 = rdp.dirname
- pn = dirpath2.basename("")
- else
+
+ # Check `package.ini` that indicate a package
+ var ini = null
+ var parent = null
+ var inipath = dirpath / "package.ini"
+ if inipath.file_exists then
+ ini = new ConfigTree(inipath)
+ end
+
+ if ini == null then
+ # No ini, multiple course of action
+
+ # The root of the directory hierarchy in the file system.
+ if rdp == "/" then
+ mgroups[rdp] = null
+ return null
+ end
+
+ # Special stopper `packages.ini`
+ if (dirpath/"packages.ini").file_exists then
+ # dirpath cannot be a package since it is a package directory
+ mgroups[rdp] = null
return null
end
- end
- # check parent directory
- var parentpath = dirpath.join_path("..").simplify_path
- var parent = get_mgroup(parentpath)
+ # check the parent directory (if it does not contain the stopper file)
+ var parentpath = dirpath.join_path("..").simplify_path
+ var stopper = parentpath / "packages.ini"
+ if not stopper.file_exists then
+ # Recursively get the parent group
+ parent = get_mgroup(parentpath)
+ if parent == null then
+ # Parent is not a group, thus we are not a group either
+ mgroups[rdp] = null
+ return null
+ end
+ end
+ end
var mgroup
if parent == null then
- # no parent, thus new project
- 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)
+ # no parent, thus new package
+ if ini != null then pn = ini["package.name"] or else pn
+ var mpackage = new MPackage(pn, model)
+ mgroup = new MGroup(pn, mpackage, null) # same name for the root group
+ mpackage.root = mgroup
+ toolcontext.info("found package `{mpackage}` at {dirpath}", 2)
+ mpackage.ini = ini
else
- mgroup = new MGroup(pn, parent.mproject, parent)
+ mgroup = new MGroup(pn, parent.mpackage, parent)
toolcontext.info("found sub group `{mgroup.full_name}` at {dirpath}", 2)
end
- var readme = dirpath2.join_path("README.md")
- if not readme.file_exists then readme = dirpath2.join_path("README")
+
+ # search documentation
+ # in src first so the documentation of the package code can be distinct for the documentation of the package usage
+ var readme = dirpath.join_path("README.md")
+ if not readme.file_exists then readme = dirpath.join_path("README")
if readme.file_exists then
- var mdoc = new MDoc
- var s = new IFStream.open(readme)
- while not s.eof do
- mdoc.content.add(s.read_line)
- end
+ var mdoc = load_markdown(readme)
mgroup.mdoc = mdoc
mdoc.original_mentity = mgroup
end
+
mgroup.filepath = dirpath
mgroups[rdp] = mgroup
return mgroup
end
- # Force the identification of all ModulePath of the group and sub-groups.
- fun visit_group(mgroup: MGroup) do
+ # Load a markdown file as a documentation object
+ fun load_markdown(filepath: String): MDoc
+ do
+ var s = new FileReader.open(filepath)
+ var lines = new Array[String]
+ var line_starts = new Array[Int]
+ var len = 1
+ while not s.eof do
+ var line = s.read_line
+ lines.add(line)
+ line_starts.add(len)
+ len += line.length + 1
+ end
+ s.close
+ var source = new SourceFile.from_string(filepath, lines.join("\n"))
+ source.line_starts.add_all line_starts
+ var mdoc = new MDoc(new Location(source, 1, lines.length, 0, 0))
+ mdoc.content.add_all(lines)
+ return mdoc
+ end
+
+ # 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 package
+ if g != null and g.mpackage == mgroup.mpackage then
+ scan_group(g)
+ end
identify_file(fp)
end
end
fun load_module_ast(filename: String): nullable AModule
do
if filename.file_extension != "nit" then
- self.toolcontext.error(null, "Error: file {filename} is not a valid nit module.")
+ self.toolcontext.error(null, "Error: file `{filename}` is not a valid nit module.")
return null
end
if not filename.file_exists then
- self.toolcontext.error(null, "Error: file {filename} not found.")
+ self.toolcontext.error(null, "Error: file `{filename}` not found.")
return null
end
self.toolcontext.info("load module {filename}", 2)
# Load the file
- var file = new IFStream.open(filename)
+ var file = new FileReader.open(filename)
var lexer = new Lexer(new SourceFile(filename, file))
var parser = new Parser(lexer)
var tree = parser.parse
return nmodule
end
+ # Remove Nit source files from a list of arguments.
+ #
+ # Items of `args` that can be loaded as a nit file will be removed from `args` and returned.
+ fun filter_nit_source(args: Array[String]): Array[String]
+ do
+ var keep = new Array[String]
+ var res = new Array[String]
+ for a in args do
+ var l = identify_file(a)
+ if l == null then
+ keep.add a
+ else
+ res.add a
+ end
+ end
+ args.clear
+ args.add_all(keep)
+ return res
+ end
+
# Try to load a module using a path.
# Display an error if there is a problem (IO / lexer / parser) and return null.
# Note: usually, you do not need this method, use `get_mmodule_by_name` instead.
# Look for the module
var file = identify_file(filename)
if file == null then
- toolcontext.error(null, "Error: cannot find module `{filename}`.")
+ if filename.file_exists then
+ toolcontext.error(null, "Error: `{filename}` is not a Nit source file.")
+ else
+ toolcontext.error(null, "Error: cannot find module `{filename}`.")
+ end
return null
end
if decl != null then
var decl_name = decl.n_name.n_id.text
if decl_name != mod_name then
- error(decl.n_name, "Error: module name missmatch; declared {decl_name} file named {mod_name}")
+ error(decl.n_name, "Error: module name mismatch; declared {decl_name} file named {mod_name}.")
+ end
+ end
+
+ # Check for conflicting module names in the package
+ if mgroup != null then
+ var others = model.get_mmodules_by_name(mod_name)
+ if others != null then for other in others do
+ if other.mgroup!= null and other.mgroup.mpackage == mgroup.mpackage then
+ var node: ANode
+ if decl == null then node = nmodule else node = decl.n_name
+ error(node, "Error: a module named `{other.full_name}` already exists at {other.location}.")
+ break
+ end
end
end
nmodules.add(nmodule)
self.mmodule2nmodule[mmodule] = nmodule
+ var source = nmodule.location.file
+ if source != null then
+ assert source.mmodule == null
+ source.mmodule = mmodule
+ end
+
if decl != null then
# Extract documentation
var ndoc = decl.n_doc
return mmodule
end
+ # Resolve the module identification for a given `AModuleName`.
+ #
+ # This method handles qualified names as used in `AModuleName`.
+ fun seach_module_by_amodule_name(n_name: AModuleName, mgroup: nullable MGroup): nullable ModulePath
+ do
+ var mod_name = n_name.n_id.text
+
+ # If a quad is given, we ignore the starting group (go from path)
+ if n_name.n_quad != null then mgroup = null
+
+ # If name not qualified, just search the name
+ if n_name.n_path.is_empty then
+ # Fast search if no n_path
+ return search_mmodule_by_name(n_name, mgroup, mod_name)
+ end
+
+ # If qualified and in a group
+ if mgroup != null then
+ # First search in the package
+ var r = mgroup.mpackage.root
+ assert r != null
+ scan_group(r)
+ # Get all modules with the final name
+ var res = r.mmodule_paths_by_name(mod_name)
+ # Filter out the name that does not match the qualifiers
+ res = [for x in res do if match_amodulename(n_name, x) then x]
+ if res.not_empty then
+ if res.length > 1 then
+ error(n_name, "Error: conflicting module files for `{mod_name}`: `{res.join(",")}`")
+ end
+ return res.first
+ end
+ end
+
+ # If no module yet, then assume that the first element of the path
+ # Is to be searched in the path.
+ var root_name = n_name.n_path.first.text
+ var roots = search_group_in_paths(root_name, paths)
+ if roots.is_empty then
+ error(n_name, "Error: cannot find `{root_name}`. Tried: {paths.join(", ")}.")
+ return null
+ end
+
+ var res = new ArraySet[ModulePath]
+ for r in roots do
+ # Then, for each root, collect modules that matches the qualifiers
+ scan_group(r)
+ var root_res = r.mmodule_paths_by_name(mod_name)
+ for x in root_res do if match_amodulename(n_name, x) then res.add x
+ end
+ if res.not_empty then
+ if res.length > 1 then
+ error(n_name, "Error: conflicting module files for `{mod_name}`: `{res.join(",")}`")
+ end
+ return res.first
+ end
+ # If still nothing, just call a basic search that will fail and will produce an error message
+ error(n_name, "Error: cannot find module `{mod_name}` from `{root_name}`. Tried: {paths.join(", ")}.")
+ return null
+ end
+
+ # Is elements of `n_name` correspond to the group nesting of `m`?
+ #
+ # Basically it check that `bar::foo` matches `bar/foo.nit` and `bar/baz/foo.nit`
+ # but not `baz/foo.nit` nor `foo/bar.nit`
+ #
+ # Is used by `seach_module_by_amodule_name` to validate qualified names.
+ private fun match_amodulename(n_name: AModuleName, m: ModulePath): Bool
+ do
+ var g: nullable MGroup = m.mgroup
+ for grp in n_name.n_path.reverse_iterator do
+ while g != null and grp.text != g.name do
+ g = g.parent
+ end
+ end
+ return g != null
+ end
+
# Analyze the module importation and fill the module_importation_hierarchy
#
# Unless you used `load_module`, the importation is already done and this method does a no-op.
var stdimport = true
var imported_modules = new Array[MModule]
for aimport in nmodule.n_imports do
+ # Do not imports conditional
+ var atconditionals = aimport.get_annotations("conditional")
+ if atconditionals.not_empty then continue
+
stdimport = false
if not aimport isa AStdImport then
continue
end
- var mgroup = mmodule.mgroup
- if aimport.n_name.n_quad != null then mgroup = null # Start from top level
- for grp in aimport.n_name.n_path do
- var path = search_mmodule_by_name(grp, mgroup, grp.text)
- if path == null then return # Skip error
- mgroup = path.mgroup
+
+ # Load the imported module
+ var suppath = seach_module_by_amodule_name(aimport.n_name, mmodule.mgroup)
+ if suppath == null then
+ mmodule.is_broken = true
+ nmodule.mmodule = null # invalidate the module
+ continue # Skip error
+ end
+ var sup = load_module_path(suppath)
+ if sup == null then
+ mmodule.is_broken = true
+ nmodule.mmodule = null # invalidate the module
+ continue # Skip error
end
- var mod_name = aimport.n_name.n_id.text
- var sup = self.get_mmodule_by_name(aimport.n_name, mgroup, mod_name)
- if sup == null then continue # Skip error
+
aimport.mmodule = sup
imported_modules.add(sup)
var mvisibility = aimport.n_visibility.mvisibility
if mvisibility == protected_visibility then
+ mmodule.is_broken = true
error(aimport.n_visibility, "Error: only properties can be protected.")
+ mmodule.is_broken = true
+ nmodule.mmodule = null # invalidate the module
return
end
if sup == mmodule then
- error(aimport.n_name, "Error: Dependency loop in module {mmodule}.")
+ error(aimport.n_name, "Error: dependency loop in module {mmodule}.")
+ mmodule.is_broken = true
+ nmodule.mmodule = null # invalidate the module
end
if sup.in_importation < mmodule then
- error(aimport.n_name, "Error: Dependency loop between modules {mmodule} and {sup}.")
+ error(aimport.n_name, "Error: dependency loop between modules {mmodule} and {sup}.")
+ mmodule.is_broken = true
+ nmodule.mmodule = null # invalidate the module
return
end
mmodule.set_visibility_for(sup, mvisibility)
end
if stdimport then
- var mod_name = "standard"
+ var mod_name = "core"
var sup = self.get_mmodule_by_name(nmodule, null, mod_name)
- if sup != null then # Skip error
+ if sup == null then
+ mmodule.is_broken = true
+ nmodule.mmodule = null # invalidate the module
+ else # Skip error
imported_modules.add(sup)
mmodule.set_visibility_for(sup, public_visibility)
end
end
- self.toolcontext.info("{mmodule} imports {imported_modules.join(", ")}", 3)
+
+ # Declare conditional importation
+ for aimport in nmodule.n_imports do
+ if not aimport isa AStdImport then continue
+ var atconditionals = aimport.get_annotations("conditional")
+ if atconditionals.is_empty then continue
+
+ var suppath = seach_module_by_amodule_name(aimport.n_name, mmodule.mgroup)
+ if suppath == null then continue # skip error
+
+ for atconditional in atconditionals do
+ var nargs = atconditional.n_args
+ if nargs.is_empty then
+ error(atconditional, "Syntax Error: `conditional` expects module identifiers as arguments.")
+ continue
+ end
+
+ # The rule
+ var rule = new Array[Object]
+
+ # First element is the goal, thus
+ rule.add suppath
+
+ # Second element is the first condition, that is to be a client of the current module
+ rule.add mmodule
+
+ # Other condition are to be also a client of each modules indicated as arguments of the annotation
+ for narg in nargs do
+ var id = narg.as_id
+ if id == null then
+ error(narg, "Syntax Error: `conditional` expects module identifier as arguments.")
+ continue
+ end
+
+ var mp = search_mmodule_by_name(narg, mmodule.mgroup, id)
+ if mp == null then continue
+
+ rule.add mp
+ end
+
+ conditional_importations.add rule
+ end
+ end
+
mmodule.set_imported_mmodules(imported_modules)
- # Force standard to be public if imported
+ apply_conditional_importations(mmodule)
+
+ self.toolcontext.info("{mmodule} imports {mmodule.in_importation.direct_greaters.join(", ")}", 3)
+
+ # Force `core` to be public if imported
for sup in mmodule.in_importation.greaters do
- if sup.name == "standard" then
+ if sup.name == "core" then
mmodule.set_visibility_for(sup, public_visibility)
end
end
end
end
+ # Global list of conditional importation rules.
+ #
+ # Each rule is a "Horn clause"-like sequence of modules.
+ # It means that the first module is the module to automatically import.
+ # The remaining modules are the conditions of the rule.
+ #
+ # Each module is either represented by a MModule (if the module is already loaded)
+ # or by a ModulePath (if the module is not yet loaded).
+ #
+ # Rules are declared by `build_module_importation` and are applied by `apply_conditional_importations`
+ # (and `build_module_importation` that calls it).
+ #
+ # TODO (when the loader will be rewritten): use a better representation and move up rules in the model.
+ private var conditional_importations = new Array[SequenceRead[Object]]
+
+ # Extends the current importations according to imported rules about conditional importation
+ fun apply_conditional_importations(mmodule: MModule)
+ do
+ # Because a conditional importation may cause additional conditional importation, use a fixed point
+ # The rules are checked naively because we assume that it does not worth to be optimized
+ var check_conditional_importations = true
+ while check_conditional_importations do
+ check_conditional_importations = false
+
+ for ci in conditional_importations do
+ # Check conditions
+ for i in [1..ci.length[ do
+ var rule_element = ci[i]
+ # An element of a rule is either a MModule or a ModulePath
+ # We need the mmodule to resonate on the importation
+ var m
+ if rule_element isa MModule then
+ m = rule_element
+ else if rule_element isa ModulePath then
+ m = rule_element.mmodule
+ # Is loaded?
+ if m == null then continue label
+ else
+ abort
+ end
+ # Is imported?
+ if not mmodule.in_importation.greaters.has(m) then continue label
+ end
+ # Still here? It means that all conditions modules are loaded and imported
+
+ # Identify the module to automatically import
+ var suppath = ci.first.as(ModulePath)
+ var sup = load_module_path(suppath)
+ if sup == null then continue
+
+ # Do nothing if already imported
+ if mmodule.in_importation.greaters.has(sup) then continue label
+
+ # Import it
+ self.toolcontext.info("{mmodule} conditionally imports {sup}", 3)
+ # TODO visibility rules (currently always public)
+ mmodule.set_visibility_for(sup, public_visibility)
+ # TODO linearization rules (currently added at the end in the order of the rules)
+ mmodule.set_imported_mmodules([sup])
+
+ # Prepare to reapply the rules
+ check_conditional_importations = true
+ end label
+ end
+ end
+
# All the loaded modules
var nmodules = new Array[AModule]
# The human path of the module
var filepath: String
- # The group (and the project) of the possible module
+ # The group (and the package) of the possible module
var mgroup: MGroup
# The loaded module (if any)
redef fun to_s do return filepath
end
+redef class MPackage
+ # The associated `.ini` file, if any
+ #
+ # The `ini` file is given as is and might contain invalid or missing information.
+ #
+ # Some packages, like stand-alone packages or virtual packages 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]
# Is the group interesting for a final user?
#
- # Groups are mandatory in the model but for simple projects they are not
+ # Groups are mandatory in the model but for simple packages they are not
# always interesting.
#
# A interesting group has, at least, one of the following true:
# * 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
+ # Associated mmodule, once created
+ var mmodule: nullable MModule = null
end
redef class AStdImport
nitlanguage / nit.git / blobdiff