New cppinfo and CMakeDeps as example of usage (#8766)

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* fix

* wip

* wip

* wip

* wip

* remove unused

* wip

* wip

* wip

* wip

* wip

* minor changes

* wip

* fix local flow

* wip

* simplify code

* change update function name

* generalize name

* start build modules support

* wip

* wip

* update test

* old behaviour

* wip

* wip

* add custom content to pkg-config generator

* add tests with components

* add some unit tests

* remove translate

* revert changes

* revert changes

* revert changes

* use other properties names

* update tests

* fix filename

* not bad

* review

* fix gets

* add tests

* fix test

* add note

* test multi

* move to integration

* fix name

* revert change

* add more tests

* remove argument

* Fix win test

* review

* review

* minor refactor

* Review

* Removed patterns vars

* Fixed tests

* change name

* Remove import

* Test passing

* Adadpter CMakeDeps

* removed version access

* lines

* Fixed tests

* PEPOCHO

* print

* Mock

* traces for test

* more asserts

* traces

* try host only

* Replace path windows

* Default get name to old mechanism

* review

* Renamed var

Co-authored-by: czoido <mrgalleta@gmail.com>
Co-authored-by: James <james@conan.io>

conans/model/conan_file.py

@@ -15,6 +15,7 @@
 from conans.model.build_info import DepsCppInfo
 from conans.model.env_info import DepsEnvInfo
 from conans.model.layout import Layout
+from conans.model.new_build_info import NewCppInfo
 from conans.model.options import Options, OptionsValues, PackageOptions
 from conans.model.requires import Requirements
 from conans.model.user_info import DepsUserInfo
@@ -156,6 +157,8 @@ def __init__(self, output, runner, display_name="", user=None, channel=None):
         self._conan_node = None  # access to container Node object, to access info, context, deps...
         self.virtualenv = True  # Set to false to opt-out automatic usage of VirtualEnv
 
+        self._conan_new_cpp_info = None  # Will be calculated lazy in the getter
+
     @property
     def context(self):
         return self._conan_node.context
@@ -213,6 +216,12 @@ def initialize(self, settings, env, buildenv=None):
         if self.description is not None and not isinstance(self.description, six.string_types):
             raise ConanException("Recipe 'description' must be a string.")
 
+    @property
+    def new_cpp_info(self):
+        if not self._conan_new_cpp_info:
+            self._conan_new_cpp_info = NewCppInfo.from_old_cppinfo(self.cpp_info)
+        return self._conan_new_cpp_info
+
     @property
     def source_folder(self):
         return self.layout.source_folder

conans/model/conanfile_interface.py

@@ -21,6 +21,10 @@ def __eq__(self, other):
     def __ne__(self, other):
         return not self.__eq__(other)
 
+    @property
+    def package_folder(self):
+        return self._conanfile.package_folder
+
     @property
     def ref(self):
         return self._conanfile.ref
@@ -41,6 +45,10 @@ def runenv_info(self):
     def cpp_info(self):
         return self._conanfile.cpp_info
 
+    @property
+    def new_cpp_info(self):
+        return self._conanfile.new_cpp_info
+
     @property
     def settings(self):
         return self._conanfile.settings

conans/model/new_build_info.py

@@ -0,0 +1,169 @@
+import copy
+from collections import OrderedDict
+
+from conans.errors import ConanException
+from conans.model.build_info import DefaultOrderedDict
+
+_DIRS_VAR_NAMES = ["includedirs", "srcdirs", "libdirs", "resdirs", "bindirs", "builddirs",
+                   "frameworkdirs"]
+_FIELD_VAR_NAMES = ["system_libs", "frameworks", "libs", "defines", "cflags", "cxxflags",
+                    "sharedlinkflags", "exelinkflags"]
+
+
+class _NewComponent(object):
+
+    def __init__(self):
+
+        # ###### PROPERTIES
+        self._generator_properties = {}
+
+        # ###### DIRECTORIES
+        self.includedirs = []  # Ordered list of include paths
+        self.srcdirs = []  # Ordered list of source paths
+        self.libdirs = []  # Directories to find libraries
+        self.resdirs = []  # Directories to find resources, data, etc
+        self.bindirs = []  # Directories to find executables and shared libs
+        self.builddirs = []
+        self.frameworkdirs = []
+
+        # ##### FIELDS
+        self.system_libs = []  # Ordered list of system libraries
+        self.frameworks = []  # Macos .framework
+        self.libs = []  # The libs to link against
+        self.defines = []  # preprocessor definitions
+        self.cflags = []  # pure C flags
+        self.cxxflags = []  # C++ compilation flags
+        self.sharedlinkflags = []  # linker flags
+        self.exelinkflags = []  # linker flags
+
+        self.sysroot = ""
+        self.requires = []
+
+    @property
+    def required_component_names(self):
+        """ Names of the required components of the same package (not scoped with ::)"""
+        return [r for r in self.requires if "::" not in r]
+
+    def set_property(self, property_name, value, generator=None):
+        self._generator_properties.setdefault(generator, {})[property_name] = value
+
+    def get_property(self, property_name, generator=None):
+        if generator:
+            try:
+                return self._generator_properties[generator][property_name]
+            except KeyError:
+                pass
+        try:
+            return self._generator_properties[None][property_name]
+        except KeyError:
+            pass
+
+
+class NewCppInfo(object):
+
+    def __init__(self):
+        super(NewCppInfo, self).__init__()
+        self.components = DefaultOrderedDict(lambda: _NewComponent())
+        self.components[None] = _NewComponent()  # Main package is a component with None key
+
+    def __getattr__(self, attr):
+        return getattr(self.components[None], attr)
+
+    def __setattr__(self, attr, value):
+        if attr in ["components"]:
+            super(NewCppInfo, self).__setattr__(attr, value)
+        else:
+            setattr(self.components[None], attr, value)
+
+    @property
+    def has_components(self):
+        return len(self.components) > 1
+
+    @staticmethod
+    def from_old_cppinfo(old):
+        ret = NewCppInfo()
+        for varname in _DIRS_VAR_NAMES + _FIELD_VAR_NAMES:
+            setattr(ret, varname, getattr(old, varname))
+
+        ret._generator_properties = copy.copy(old._generator_properties)
+
+        # COMPONENTS
+        for cname, c in old.components.items():
+            for varname in _DIRS_VAR_NAMES + _FIELD_VAR_NAMES:
+                setattr(ret.components[cname], varname, getattr(c, varname))
+            ret.components[cname].requires = copy.copy(c.requires)
+            ret.components[cname]._generator_properties = copy.copy(c._generator_properties)
+        return ret
+
+    def get_sorted_components(self):
+        """Order the components taking into account if they depend on another component in the
+        same package (not scoped with ::). First less dependant
+        return:  {component_name: component}
+        """
+        processed = []  # Names of the components ordered
+        # FIXME: Cache the sort
+        while (len(self.components) - 1) > len(processed):
+            for name, c in self.components.items():
+                if name is None:
+                    continue
+                req_processed = [n for n in c.required_component_names if n not in processed]
+                if not req_processed and name not in processed:
+                    processed.append(name)
+
+        return OrderedDict([(cname,  self.components[cname]) for cname in processed])
+
+    def aggregate_components(self):
+        """Aggregates all the components as global values"""
+        if self.has_components:
+            components = self.get_sorted_components()
+            cnames = list(components.keys())
+            cnames.reverse()  # More dependant first
+
+            # Clean global values
+            for n in _DIRS_VAR_NAMES + _FIELD_VAR_NAMES:
+                setattr(self.components[None], n, [])
+
+            for name in cnames:
+                component = components[name]
+                for n in _DIRS_VAR_NAMES + _FIELD_VAR_NAMES:
+                    dest = getattr(self.components[None], n)
+                    dest += [i for i in getattr(component, n) if i not in dest]
+                self.components[None].requires.extend(component.requires)
+                # The generator properties are not aggregated, should be defined in the root
+                # cpp info if needed
+            # FIXME: What to do about sysroot?
+        # Leave only the aggregated value
+        main_value = self.components[None]
+        self.components = DefaultOrderedDict(lambda: _NewComponent())
+        self.components[None] = main_value
+
+    def merge(self, other):
+        # TODO: Still not used, to be used by global generators
+        # If we are merging isolated cppinfo objects is because the generator is "global"
+        # (dirs and flags in link order in a single list) so first call
+        # cpp_info.aggregate_components()
+        if self.has_components or other.has_components:
+            raise ConanException("Cannot aggregate two cppinfo objects with components. "
+                                 "Do cpp_info.aggregate_components() first")
+        for n in _DIRS_VAR_NAMES + _FIELD_VAR_NAMES:
+            dest = getattr(self.components[None], n)
+            dest += [i for i in getattr(other, n) if i not in dest]
+
+    def copy(self):
+        ret = NewCppInfo()
+        ret._generator_properties = copy.copy(self._generator_properties)
+        ret.components = DefaultOrderedDict(lambda: _NewComponent())
+        for comp_name in self.components:
+            ret.components[comp_name] = copy.copy(self.components[comp_name])
+        return ret
+
+    @property
+    def required_components(self):
+        """Returns a list of tuples with (require, component_name) required by the package
+        If the require is internal (to another component), the require will be None"""
+        # FIXME: Cache the value
+        ret = []
+        for comp in self.components.values():
+            ret.extend([r.split("::") for r in comp.requires if "::" in r and r not in ret])
+            ret.extend([(None, r) for r in comp.requires if "::" not in r and r not in ret])
+        return ret

conans/test/functional/conan_build_info/new_build_info_test.py

@@ -0,0 +1,163 @@
+import pytest
+
+from conans.errors import ConanException
+from conans.model.build_info import CppInfo
+from conans.model.new_build_info import NewCppInfo, _DIRS_VAR_NAMES, _FIELD_VAR_NAMES
+
+
+def test_components_order():
+    cppinfo = NewCppInfo()
+    cppinfo.components["c1"].requires = ["c4", "OtherPackage::OtherComponent2"]
+    cppinfo.components["c2"].requires = ["OtherPackage::OtherComponent"]
+    cppinfo.components["c3"].requires = ["c2"]
+    cppinfo.components["c4"].requires = ["c3"]
+    sorted_c = list(cppinfo.get_sorted_components().keys())
+    assert sorted_c == ["c2", "c3", "c4", "c1"]
+
+
+def test_generator_properties_copy():
+    cppinfo = NewCppInfo()
+    cppinfo.set_property("foo", "foo_value", "generator1")
+    cppinfo.set_property("foo", "var_value", "generator2")
+    cppinfo.set_property("foo2", "foo2_value", "generator1")
+
+    copied = cppinfo.copy()
+
+    assert copied.get_property("foo") is None
+    assert copied.get_property("foo", "generator1") == "foo_value"
+    assert copied.get_property("foo", "generator2") == "var_value"
+
+
+def test_component_aggregation():
+    cppinfo = NewCppInfo()
+
+    cppinfo.includedirs = ["includedir"]
+    cppinfo.libdirs = ["libdir"]
+    cppinfo.srcdirs = ["srcdir"]
+    cppinfo.bindirs = ["bindir"]
+    cppinfo.builddirs = ["builddir"]
+    cppinfo.frameworkdirs = ["frameworkdir"]
+
+    cppinfo.components["c2"].includedirs = ["includedir_c2"]
+    cppinfo.components["c2"].libdirs = ["libdir_c2"]
+    cppinfo.components["c2"].srcdirs = ["srcdir_c2"]
+    cppinfo.components["c2"].bindirs = ["bindir_c2"]
+    cppinfo.components["c2"].builddirs = ["builddir_c2"]
+    cppinfo.components["c2"].frameworkdirs = ["frameworkdir_c2"]
+    cppinfo.components["c2"].cxxflags = ["cxxflags_c2"]
+    cppinfo.components["c2"].defines = ["defines_c2"]
+
+    cppinfo.components["c1"].requires = ["c2", "LIB_A::C1"]
+    cppinfo.components["c1"].includedirs = ["includedir_c1"]
+    cppinfo.components["c1"].libdirs = ["libdir_c1"]
+    cppinfo.components["c1"].srcdirs = ["srcdir_c1"]
+    cppinfo.components["c1"].bindirs = ["bindir_c1"]
+    cppinfo.components["c1"].builddirs = ["builddir_c1"]
+    cppinfo.components["c1"].frameworkdirs = ["frameworkdir_c1"]
+    cppinfo.components["c1"].cxxflags = ["cxxflags_c1"]
+    cppinfo.components["c1"].defines = ["defines_c1"]
+
+    ret = cppinfo.copy()
+    ret.aggregate_components()
+
+    assert ret.includedirs == ["includedir_c1", "includedir_c2"]
+    assert ret.libdirs == ["libdir_c1", "libdir_c2"]
+    assert ret.srcdirs == ["srcdir_c1", "srcdir_c2"]
+    assert ret.bindirs == ["bindir_c1", "bindir_c2"]
+    assert ret.builddirs == ["builddir_c1", "builddir_c2"]
+    assert ret.frameworkdirs == ["frameworkdir_c1", "frameworkdir_c2"]
+    assert ret.cxxflags == ["cxxflags_c1", "cxxflags_c2"]
+    assert ret.defines == ["defines_c1", "defines_c2"]
+
+    # If we change the internal graph the order is different
+    cppinfo.components["c1"].requires = []
+    cppinfo.components["c2"].requires = ["c1"]
+
+    ret = cppinfo.copy()
+    ret.aggregate_components()
+
+    assert ret.includedirs == ["includedir_c2", "includedir_c1"]
+    assert ret.libdirs == ["libdir_c2", "libdir_c1"]
+    assert ret.srcdirs == ["srcdir_c2", "srcdir_c1"]
+    assert ret.bindirs == ["bindir_c2", "bindir_c1"]
+    assert ret.builddirs == ["builddir_c2", "builddir_c1"]
+    assert ret.frameworkdirs == ["frameworkdir_c2", "frameworkdir_c1"]
+
+
+def norm(paths):
+    return [d.replace("\\", "/") for d in paths]
+
+
+def test_cpp_info_merge_with_components():
+    """If we try to merge a cpp info with another one and some of them have components, assert"""
+    cppinfo = NewCppInfo()
+    cppinfo.components["foo"].cxxflags = ["var"]
+
+    other = NewCppInfo()
+    other.components["foo2"].cxxflags = ["var2"]
+
+    with pytest.raises(ConanException) as exc:
+        cppinfo.merge(other)
+
+    assert "Cannot aggregate two cppinfo objects with components" in str(exc.value)
+
+
+def test_cpp_info_merge_aggregating_components_first():
+    cppinfo = NewCppInfo()
+    for n in _DIRS_VAR_NAMES + _FIELD_VAR_NAMES:
+        setattr(cppinfo.components["foo"], n, ["var_{}_1".format(n), "var_{}_2".format(n)])
+        setattr(cppinfo.components["foo2"], n, ["var2_{}_1".format(n), "var2_{}_2".format(n)])
+
+    cppinfo.components["foo"].requires = ["foo2"]  # Deterministic order
+
+    other = NewCppInfo()
+    for n in _DIRS_VAR_NAMES + _FIELD_VAR_NAMES:
+        setattr(other.components["boo"], n, ["jar_{}_1".format(n), "jar_{}_2".format(n)])
+        setattr(other.components["boo2"], n, ["jar2_{}_1".format(n), "jar2_{}_2".format(n)])
+
+    other.components["boo"].requires = ["boo2"]  # Deterministic order
+
+    cppinfo.aggregate_components()
+    other.aggregate_components()
+
+    cppinfo.merge(other)
+
+    for n in _DIRS_VAR_NAMES + _FIELD_VAR_NAMES:
+        assert getattr(cppinfo, n) == ["var_{}_1".format(n), "var_{}_2".format(n),
+                                       "var2_{}_1".format(n), "var2_{}_2".format(n),
+                                       "jar_{}_1".format(n), "jar_{}_2".format(n),
+                                       "jar2_{}_1".format(n), "jar2_{}_2".format(n)]
+
+
+def test_from_old_cppinfo_components():
+    oldcppinfo = CppInfo("ref", "/root/")
+    for n in _DIRS_VAR_NAMES + _FIELD_VAR_NAMES:
+        setattr(oldcppinfo.components["foo"], n, ["var_{}_1".format(n), "var_{}_2".format(n)])
+        setattr(oldcppinfo.components["foo2"], n, ["var2_{}_1".format(n), "var2_{}_2".format(n)])
+
+    # The names and filenames are not copied to the new model
+    oldcppinfo.components["foo"].names["Gen"] = ["MyName"]
+    oldcppinfo.filenames["Gen"] = ["Myfilename"]
+
+    cppinfo = NewCppInfo.from_old_cppinfo(oldcppinfo)
+
+    assert isinstance(cppinfo, NewCppInfo)
+
+    for n in _DIRS_VAR_NAMES + _FIELD_VAR_NAMES:
+        assert getattr(cppinfo.components["foo"], n) == ["var_{}_1".format(n),
+                                                         "var_{}_2".format(n)]
+        assert getattr(cppinfo.components["foo2"], n) == ["var2_{}_1".format(n),
+                                                          "var2_{}_2".format(n)]
+
+
+def test_from_old_cppinfo_no_components():
+    oldcppinfo = CppInfo("ref", "/root/")
+    for n in _DIRS_VAR_NAMES + _FIELD_VAR_NAMES:
+        setattr(oldcppinfo, n, ["var_{}_1".format(n), "var_{}_2".format(n)])
+
+    cppinfo = NewCppInfo.from_old_cppinfo(oldcppinfo)
+
+    assert isinstance(cppinfo, NewCppInfo)
+
+    for n in _DIRS_VAR_NAMES + _FIELD_VAR_NAMES:
+        assert getattr(cppinfo, n) == ["var_{}_1".format(n), "var_{}_2".format(n)]