qapi: Use quotes more consistently in frontend error messages

Consistently enclose error messages in double quotes.  Use single
quotes within, except for one case of "'".

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20190914153506.2151-8-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>

scripts/qapi/common.py

@@ -214,7 +214,7 @@ class QAPIDoc(object):
         # recognized, and get silently treated as ordinary text
         if not self.symbol and not self.body.text and line.startswith('@'):
             if not line.endswith(':'):
-                raise QAPIParseError(self._parser, "Line should end with :")
+                raise QAPIParseError(self._parser, "Line should end with ':'")
             self.symbol = line[1:-1]
             # FIXME invalid names other than the empty string aren't flagged
             if not self.symbol:
@@ -470,7 +470,7 @@ class QAPISchemaParser(object):
             else:
                 fobj = open(incl_fname, 'r')
         except IOError as e:
-            raise QAPISemError(info, '%s: %s' % (e.strerror, incl_fname))
+            raise QAPISemError(info, "%s: %s" % (e.strerror, incl_fname))
         return QAPISchemaParser(fobj, previously_included, info)
 
     def _pragma(self, name, value, info):
@@ -522,7 +522,7 @@ class QAPISchemaParser(object):
                     ch = self.src[self.cursor]
                     self.cursor += 1
                     if ch == '\n':
-                        raise QAPIParseError(self, 'Missing terminating "\'"')
+                        raise QAPIParseError(self, "Missing terminating \"'\"")
                     if esc:
                         # Note: we recognize only \\ because we have
                         # no use for funny characters in strings
@@ -559,7 +559,7 @@ class QAPISchemaParser(object):
                 self.line += 1
                 self.line_pos = self.cursor
             elif not self.tok.isspace():
-                raise QAPIParseError(self, 'Stray "%s"' % self.tok)
+                raise QAPIParseError(self, "Stray '%s'" % self.tok)
 
     def get_members(self):
         expr = OrderedDict()
@@ -567,24 +567,24 @@ class QAPISchemaParser(object):
             self.accept()
             return expr
         if self.tok != "'":
-            raise QAPIParseError(self, 'Expected string or "}"')
+            raise QAPIParseError(self, "Expected string or '}'")
         while True:
             key = self.val
             self.accept()
             if self.tok != ':':
-                raise QAPIParseError(self, 'Expected ":"')
+                raise QAPIParseError(self, "Expected ':'")
             self.accept()
             if key in expr:
-                raise QAPIParseError(self, 'Duplicate key "%s"' % key)
+                raise QAPIParseError(self, "Duplicate key '%s'" % key)
             expr[key] = self.get_expr(True)
             if self.tok == '}':
                 self.accept()
                 return expr
             if self.tok != ',':
-                raise QAPIParseError(self, 'Expected "," or "}"')
+                raise QAPIParseError(self, "Expected ',' or '}'")
             self.accept()
             if self.tok != "'":
-                raise QAPIParseError(self, 'Expected string')
+                raise QAPIParseError(self, "Expected string")
 
     def get_values(self):
         expr = []
@@ -592,20 +592,20 @@ class QAPISchemaParser(object):
             self.accept()
             return expr
         if self.tok not in "{['tfn":
-            raise QAPIParseError(self, 'Expected "{", "[", "]", string, '
+            raise QAPIParseError(
-                                 'boolean or "null"')
+                self, "Expected '{', '[', ']', string, boolean or 'null'")
         while True:
             expr.append(self.get_expr(True))
             if self.tok == ']':
                 self.accept()
                 return expr
             if self.tok != ',':
-                raise QAPIParseError(self, 'Expected "," or "]"')
+                raise QAPIParseError(self, "Expected ',' or ']'")
             self.accept()
 
     def get_expr(self, nested):
         if self.tok != '{' and not nested:
-            raise QAPIParseError(self, 'Expected "{"')
+            raise QAPIParseError(self, "Expected '{'")
         if self.tok == '{':
             self.accept()
             expr = self.get_members()
@@ -616,8 +616,8 @@ class QAPISchemaParser(object):
             expr = self.val
             self.accept()
         else:
-            raise QAPIParseError(self, 'Expected "{", "[", string, '
+            raise QAPIParseError(
-                                 'boolean or "null"')
+                self, "Expected '{', '[', string, boolean or 'null'")
         return expr
 
     def get_doc(self, info):
@@ -881,9 +881,10 @@ def check_union(expr, info):
                                "struct '%s'"
                                % (discriminator, base))
         if discriminator_value.get('if'):
-            raise QAPISemError(info, 'The discriminator %s.%s for union %s '
+            raise QAPISemError(
-                               'must not be conditional' %
+                info,
-                               (base, discriminator, name))
+                "The discriminator %s.%s for union %s must not be conditional"
+                % (base, discriminator, name))
         enum_define = enum_types.get(discriminator_value['type'])
         # Do not allow string discriminator
         if not enum_define:

tests/qapi-schema/bad-type-int.err

@@ -1 +1 @@
-tests/qapi-schema/bad-type-int.json:3:13: Stray "1"
+tests/qapi-schema/bad-type-int.json:3:13: Stray '1'

tests/qapi-schema/doc-missing-colon.err

@@ -1 +1 @@
-tests/qapi-schema/doc-missing-colon.json:4:1: Line should end with :
+tests/qapi-schema/doc-missing-colon.json:4:1: Line should end with ':'

tests/qapi-schema/duplicate-key.err

@@ -1 +1 @@
-tests/qapi-schema/duplicate-key.json:3:10: Duplicate key "key"
+tests/qapi-schema/duplicate-key.json:3:10: Duplicate key 'key'

tests/qapi-schema/enum-int-member.err

@@ -1 +1 @@
-tests/qapi-schema/enum-int-member.json:3:31: Stray "1"
+tests/qapi-schema/enum-int-member.json:3:31: Stray '1'

tests/qapi-schema/escape-outside-string.err

@@ -0,0 +1 @@
+tests/qapi-schema/escape-outside-string.json:3:27: Stray '\'

tests/qapi-schema/funny-char.err

@@ -1 +1 @@
-tests/qapi-schema/funny-char.json:2:36: Stray ";"
+tests/qapi-schema/funny-char.json:2:36: Stray ';'

tests/qapi-schema/funny-word.err

@@ -1 +1 @@
-tests/qapi-schema/funny-word.json:1:3: Stray "c"
+tests/qapi-schema/funny-word.json:1:3: Stray 'c'

tests/qapi-schema/include-before-err.err

@@ -1 +1 @@
-tests/qapi-schema/include-before-err.json:2:13: Expected ":"
+tests/qapi-schema/include-before-err.json:2:13: Expected ':'

tests/qapi-schema/include-nested-err.err

@@ -1,2 +1,2 @@
 In file included from tests/qapi-schema/include-nested-err.json:1:
-tests/qapi-schema/missing-colon.json:1:10: Expected ":"
+tests/qapi-schema/missing-colon.json:1:10: Expected ':'

tests/qapi-schema/leading-comma-list.err

@@ -1 +1 @@
-tests/qapi-schema/leading-comma-list.json:2:13: Expected "{", "[", "]", string, boolean or "null"
+tests/qapi-schema/leading-comma-list.json:2:13: Expected '{', '[', ']', string, boolean or 'null'

tests/qapi-schema/leading-comma-object.err

@@ -1 +1 @@
-tests/qapi-schema/leading-comma-object.json:1:3: Expected string or "}"
+tests/qapi-schema/leading-comma-object.json:1:3: Expected string or '}'

tests/qapi-schema/missing-colon.err

@@ -1 +1 @@
-tests/qapi-schema/missing-colon.json:1:10: Expected ":"
+tests/qapi-schema/missing-colon.json:1:10: Expected ':'

tests/qapi-schema/missing-comma-list.err

@@ -1 +1 @@
-tests/qapi-schema/missing-comma-list.json:2:20: Expected "," or "]"
+tests/qapi-schema/missing-comma-list.json:2:20: Expected ',' or ']'

tests/qapi-schema/missing-comma-object.err

@@ -1 +1 @@
-tests/qapi-schema/missing-comma-object.json:2:3: Expected "," or "}"
+tests/qapi-schema/missing-comma-object.json:2:3: Expected ',' or '}'

tests/qapi-schema/non-objects.err

@@ -1 +1 @@
-tests/qapi-schema/non-objects.json:1:1: Expected "{"
+tests/qapi-schema/non-objects.json:1:1: Expected '{'

tests/qapi-schema/quoted-structural-chars.err

@@ -1 +1 @@
-tests/qapi-schema/quoted-structural-chars.json:1:1: Expected "{"
+tests/qapi-schema/quoted-structural-chars.json:1:1: Expected '{'

tests/qapi-schema/trailing-comma-list.err

@@ -1 +1 @@
-tests/qapi-schema/trailing-comma-list.json:2:36: Expected "{", "[", string, boolean or "null"
+tests/qapi-schema/trailing-comma-list.json:2:36: Expected '{', '[', string, boolean or 'null'

tests/qapi-schema/unclosed-list.err

@@ -1 +1 @@
-tests/qapi-schema/unclosed-list.json:1:20: Expected "," or "]"
+tests/qapi-schema/unclosed-list.json:1:20: Expected ',' or ']'

tests/qapi-schema/unclosed-object.err

@@ -1 +1 @@
-tests/qapi-schema/unclosed-object.json:1:21: Expected "," or "}"
+tests/qapi-schema/unclosed-object.json:1:21: Expected ',' or '}'