bitbake: add file and line number to ParseError

Ensure that a file and line number are reported for ParseError where
possible. This helps particularly in the case of inherit and require
which previously did not report either of these upon failure.

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

5 files changed, 26 insertions, 16 deletions

diff --git a/lib/bb/cooker.py b/lib/bb/cooker.py
index 308805a71..bf25a8320 100644
--- a/lib/bb/cooker.py
+++ b/lib/bb/cooker.py
@@ -1398,7 +1398,7 @@ def _parse(fn, data, include=True):
 
 @catch_parse_error
 def _inherit(bbclass, data):
-    bb.parse.BBHandler.inherit([bbclass], data)
+    bb.parse.BBHandler.inherit([bbclass], "configuration INHERITs", 0, data)
     return data
 
 class ParsingFailure(Exception):
diff --git a/lib/bb/parse/__init__.py b/lib/bb/parse/__init__.py
index c5005aec9..8b7ec73c5 100644
--- a/lib/bb/parse/__init__.py
+++ b/lib/bb/parse/__init__.py
@@ -37,6 +37,17 @@ logger = logging.getLogger("BitBake.Parsing")
 
 class ParseError(Exception):
     """Exception raised when parsing fails"""
+    def __init__(self, msg, filename, lineno=0):
+        self.msg = msg
+        self.filename = filename
+        self.lineno = lineno
+        Exception.__init__(self, msg, filename, lineno)
+
+    def __str__(self):
+        if self.lineno:
+            return "ParseError at %s:%d: %s" % (self.filename, self.lineno, self.msg)
+        else:
+            return "ParseError in %s: %s" % (self.filename, self.msg)
 
 class SkipPackage(Exception):
     """Exception raised to skip this package"""
@@ -78,7 +89,7 @@ def handle(fn, data, include = 0):
     for h in handlers:
         if h['supports'](fn, data):
             return h['handle'](fn, data, include)
-    raise ParseError("%s is not a BitBake file" % fn)
+    raise ParseError("not a BitBake file", fn)
 
 def init(fn, data):
     for h in handlers:
@@ -111,7 +122,7 @@ def vars_from_file(mypkg, d):
     parts = myfile[0].split('_')
     __pkgsplit_cache__[mypkg] = parts
     if len(parts) > 3:
-        raise ParseError("Unable to generate default variables from the filename: %s (too many underscores)" % mypkg)
+        raise ParseError("Unable to generate default variables from filename (too many underscores)", mypkg)
     exp = 3 - len(parts)
     tmplist = []
     while exp != 0:
diff --git a/lib/bb/parse/ast.py b/lib/bb/parse/ast.py
index 31c930d9c..94fa175bb 100644
--- a/lib/bb/parse/ast.py
+++ b/lib/bb/parse/ast.py
@@ -59,9 +59,9 @@ class IncludeNode(AstNode):
 
         # TODO: Cache those includes... maybe not here though
         if self.force:
-            bb.parse.ConfHandler.include(self.filename, s, data, "include required")
+            bb.parse.ConfHandler.include(self.filename, s, self.lineno, data, "include required")
         else:
-            bb.parse.ConfHandler.include(self.filename, s, data, False)
+            bb.parse.ConfHandler.include(self.filename, s, self.lineno, data, False)
 
 class ExportNode(AstNode):
     def __init__(self, filename, lineno, var):
@@ -267,7 +267,7 @@ class InheritNode(AstNode):
         self.classes = classes
 
     def eval(self, data):
-        bb.parse.BBHandler.inherit(self.classes, data)
+        bb.parse.BBHandler.inherit(self.classes, self.filename, self.lineno, data)
 
 def handleInclude(statements, filename, lineno, m, force):
     statements.append(IncludeNode(filename, lineno, m.group(1), force))
@@ -450,7 +450,7 @@ def multi_finalize(fn, d):
                 d.setVar("BBEXTENDVARIANT", variantmap[name])
             else:
                 d.setVar("PN", "%s-%s" % (pn, name))
-            bb.parse.BBHandler.inherit([extendedmap[name]], d)
+            bb.parse.BBHandler.inherit([extendedmap[name]], fn, 0, d)
 
         safe_d.setVar("BBCLASSEXTEND", extended)
         _create_variants(datastores, extendedmap.keys(), extendfunc)
diff --git a/lib/bb/parse/parse_py/BBHandler.py b/lib/bb/parse/parse_py/BBHandler.py
index 2d6e331a1..125f458de 100644
--- a/lib/bb/parse/parse_py/BBHandler.py
+++ b/lib/bb/parse/parse_py/BBHandler.py
@@ -68,10 +68,8 @@ def supports(fn, d):
     """Return True if fn has a supported extension"""
     return os.path.splitext(fn)[-1] in [".bb", ".bbclass", ".inc"]
 
-def inherit(files, d):
+def inherit(files, fn, lineno, d):
     __inherit_cache = data.getVar('__inherit_cache', d) or []
-    fn = ""
-    lineno = 0
     for file in files:
         file = data.expand(file, d)
         if not os.path.isabs(file) and not file.endswith(".bbclass"):
@@ -81,7 +79,7 @@ def inherit(files, d):
             logger.log(logging.DEBUG -1, "BB %s:%d: inheriting %s", fn, lineno, file)
             __inherit_cache.append( file )
             data.setVar('__inherit_cache', __inherit_cache, d)
-            include(fn, file, d, "inherit")
+            include(fn, file, lineno, d, "inherit")
             __inherit_cache = data.getVar('__inherit_cache', d) or []
 
 def get_statements(filename, absolute_filename, base_name):
diff --git a/lib/bb/parse/parse_py/ConfHandler.py b/lib/bb/parse/parse_py/ConfHandler.py
index 6ae9d973e..9242632c5 100644
--- a/lib/bb/parse/parse_py/ConfHandler.py
+++ b/lib/bb/parse/parse_py/ConfHandler.py
@@ -44,10 +44,11 @@ def init(data):
 def supports(fn, d):
     return fn[-5:] == ".conf"
 
-def include(oldfn, fn, data, error_out):
+def include(oldfn, fn, lineno, data, error_out):
     """
-    error_out If True a ParseError will be raised if the to be included
-    config-files could not be included.
+    error_out: A string indicating the verb (e.g. "include", "inherit") to be
+    used in a ParseError that will be raised if the file to be included could
+    not be included. Specify False to avoid raising an error in this case.
     """
     if oldfn == fn: # prevent infinite recursion
         return None
@@ -68,7 +69,7 @@ def include(oldfn, fn, data, error_out):
         ret = handle(fn, data, True)
     except IOError:
         if error_out:
-            raise ParseError("Could not %(error_out)s file %(fn)s" % vars() )
+            raise ParseError("Could not %(error_out)s file %(fn)s" % vars(), oldfn, lineno)
         logger.debug(2, "CONF file '%s' not found", fn)
 
 def handle(fn, data, include):
@@ -131,7 +132,7 @@ def feeder(lineno, s, fn, statements):
         ast.handleExport(statements, fn, lineno, m)
         return
 
-    raise ParseError("%s:%d: unparsed line: '%s'" % (fn, lineno, s));
+    raise ParseError("unparsed line: '%s'" % s, fn, lineno);
 
 # Add us to the handlers list
 from bb.parse import handlers