diff options
Diffstat (limited to 'scripts/qapi.py')
| -rw-r--r-- | scripts/qapi.py | 69 |
1 files changed, 55 insertions, 14 deletions
diff --git a/scripts/qapi.py b/scripts/qapi.py index b474c39558..ec806aabeb 100644 --- a/scripts/qapi.py +++ b/scripts/qapi.py @@ -11,7 +11,9 @@ # This work is licensed under the terms of the GNU GPL, version 2. # See the COPYING file in the top-level directory. +import re from ordereddict import OrderedDict +import os import sys builtin_types = [ @@ -35,9 +37,17 @@ builtin_type_qtypes = { 'uint64': 'QTYPE_QINT', } +def error_path(parent): + res = "" + while parent: + res = ("In file included from %s:%d:\n" % (parent['file'], + parent['line'])) + res + parent = parent['parent'] + return res + class QAPISchemaError(Exception): def __init__(self, schema, msg): - self.fp = schema.fp + self.input_file = schema.input_file self.msg = msg self.col = 1 self.line = schema.line @@ -46,23 +56,31 @@ class QAPISchemaError(Exception): self.col = (self.col + 7) % 8 + 1 else: self.col += 1 + self.info = schema.parent_info def __str__(self): - return "%s:%s:%s: %s" % (self.fp.name, self.line, self.col, self.msg) + return error_path(self.info) + \ + "%s:%d:%d: %s" % (self.input_file, self.line, self.col, self.msg) class QAPIExprError(Exception): def __init__(self, expr_info, msg): - self.fp = expr_info['fp'] - self.line = expr_info['line'] + self.info = expr_info self.msg = msg def __str__(self): - return "%s:%s: %s" % (self.fp.name, self.line, self.msg) + return error_path(self.info['parent']) + \ + "%s:%d: %s" % (self.info['file'], self.info['line'], self.msg) class QAPISchema: - def __init__(self, fp): - self.fp = fp + def __init__(self, fp, input_relname=None, include_hist=[], parent_info=None): + input_fname = os.path.abspath(fp.name) + if input_relname is None: + input_relname = fp.name + self.input_dir = os.path.dirname(input_fname) + self.input_file = input_relname + self.include_hist = include_hist + [(input_relname, input_fname)] + self.parent_info = parent_info self.src = fp.read() if self.src == '' or self.src[-1] != '\n': self.src += '\n' @@ -73,10 +91,33 @@ class QAPISchema: self.accept() while self.tok != None: - expr_info = {'fp': fp, 'line': self.line} - expr_elem = {'expr': self.get_expr(False), - 'info': expr_info} - self.exprs.append(expr_elem) + expr_info = {'file': input_relname, 'line': self.line, 'parent': self.parent_info} + expr = self.get_expr(False) + if isinstance(expr, dict) and "include" in expr: + if len(expr) != 1: + raise QAPIExprError(expr_info, "Invalid 'include' directive") + include = expr["include"] + if not isinstance(include, str): + raise QAPIExprError(expr_info, + 'Expected a file name (string), got: %s' + % include) + include_path = os.path.join(self.input_dir, include) + if any(include_path == elem[1] + for elem in self.include_hist): + raise QAPIExprError(expr_info, "Inclusion loop for %s" + % include) + try: + fobj = open(include_path, 'r') + except IOError as e: + raise QAPIExprError(expr_info, + '%s: %s' % (e.strerror, include)) + exprs_include = QAPISchema(fobj, include, + self.include_hist, expr_info) + self.exprs.extend(exprs_include.exprs) + else: + expr_elem = {'expr': expr, + 'info': expr_info} + self.exprs.append(expr_elem) def accept(self): while True: @@ -263,10 +304,10 @@ def check_exprs(schema): if expr.has_key('union'): check_union(expr, expr_elem['info']) -def parse_schema(fp): +def parse_schema(input_file): try: - schema = QAPISchema(fp) - except QAPISchemaError, e: + schema = QAPISchema(open(input_file, "r")) + except (QAPISchemaError, QAPIExprError), e: print >>sys.stderr, e exit(1) |