build/interperter: Add annotations and move input validation to interpreter

This moves the user input validation to the interpreter, instead of
being in the build module, and adds type annotations.

1 files changed, 3 insertions, 7 deletions

diff --git a/mesonbuild/build.py b/mesonbuild/build.py
index dacf68b..736d42c 100644
--- a/mesonbuild/build.py
+++ b/mesonbuild/build.py
@@ -2567,19 +2567,15 @@ class ConfigurationData:
 # A bit poorly named, but this represents plain data files to copy
 # during install.
 class Data:
-    def __init__(self, sources, install_dir, install_mode=None, rename=None):
+    def __init__(self, sources: T.List[File], install_dir: str,
+                 install_mode: T.Optional['FileMode'] = None, rename: T.List[str] = None):
         self.sources = sources
         self.install_dir = install_dir
         self.install_mode = install_mode
-        self.sources = listify(self.sources)
-        for s in self.sources:
-            assert(isinstance(s, File))
         if rename is None:
             self.rename = [os.path.basename(f.fname) for f in self.sources]
         else:
-            self.rename = stringlistify(rename)
-            if len(self.rename) != len(self.sources):
-                raise MesonException('Size of rename argument is different from number of sources')
+            self.rename = rename
 
 class RunScript(dict):
     def __init__(self, script, args):