Initial import
LoxiGen is the work of several developers, not just myself.
diff --git a/utest/test_parser.py b/utest/test_parser.py
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+++ b/utest/test_parser.py
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+#!/usr/bin/env python
+# Copyright 2013, Big Switch Networks, Inc.
+#
+# LoxiGen is licensed under the Eclipse Public License, version 1.0 (EPL), with
+# the following special exception:
+#
+# LOXI Exception
+#
+# As a special exception to the terms of the EPL, you may distribute libraries
+# generated by LoxiGen (LoxiGen Libraries) under the terms of your choice, provided
+# that copyright and licensing notices generated by LoxiGen are not altered or removed
+# from the LoxiGen Libraries and the notice provided below is (i) included in
+# the LoxiGen Libraries, if distributed in source code form and (ii) included in any
+# documentation for the LoxiGen Libraries, if distributed in binary form.
+#
+# Notice: "Copyright 2013, Big Switch Networks, Inc. This library was generated by the LoxiGen Compiler."
+#
+# You may not use this file except in compliance with the EPL or LOXI Exception. You may obtain
+# a copy of the EPL at:
+#
+# http://www.eclipse.org/legal/epl-v10.html
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# EPL for the specific language governing permissions and limitations
+# under the EPL.
+
+import unittest
+import pyparsing
+import loxi_front_end.parser as parser
+
+class StructTests(unittest.TestCase):
+ def test_empty(self):
+ src = """\
+struct foo { };
+"""
+ ast = parser.parse(src)
+ self.assertEquals(ast.asList(), [['struct', 'foo', []]])
+
+ def test_one_field(self):
+ src = """\
+struct foo {
+ uint32_t bar;
+};
+"""
+ ast = parser.parse(src)
+ self.assertEquals(ast.asList(),
+ [['struct', 'foo', [['uint32_t', 'bar']]]])
+
+ def test_multiple_fields(self):
+ src = """\
+struct foo {
+ uint32_t bar;
+ uint8_t baz;
+ uint64_t abc;
+};
+"""
+ ast = parser.parse(src)
+ self.assertEquals(ast.asList(),
+ [['struct', 'foo',
+ [['uint32_t', 'bar'],
+ ['uint8_t', 'baz'],
+ ['uint64_t', 'abc']]]])
+
+ def test_array_type(self):
+ src = """\
+struct foo {
+ uint32_t[4] bar;
+};
+"""
+ ast = parser.parse(src)
+ self.assertEquals(ast.asList(),
+ [['struct', 'foo', [['uint32_t[4]', 'bar']]]])
+
+ def test_list_type(self):
+ src = """\
+struct foo {
+ list(of_action_t) bar;
+};
+"""
+ ast = parser.parse(src)
+ self.assertEquals(ast.asList(),
+ [['struct', 'foo', [['list(of_action_t)', 'bar']]]])
+
+class TestMetadata(unittest.TestCase):
+ def test_version(self):
+ src = """\
+#version 1
+"""
+ ast = parser.parse(src)
+ self.assertEquals(ast.asList(), [['metadata', 'version', '1']])
+
+class TestToplevel(unittest.TestCase):
+ def test_multiple_structs(self):
+ src = """\
+struct foo { };
+struct bar { };
+"""
+ ast = parser.parse(src)
+ self.assertEquals(ast.asList(),
+ [['struct', 'foo', []], ['struct', 'bar', []]])
+
+ def test_comments(self):
+ src = """\
+// comment 1
+struct foo { //comment 2
+// comment 3
+ uint32_t a; //comment 5
+// comment 6
+};
+// comment 4
+"""
+ ast = parser.parse(src)
+ self.assertEquals(ast.asList(),
+ [['struct', 'foo', [['uint32_t', 'a']]]])
+
+ def test_mixed(self):
+ src = """\
+#version 1
+struct foo { };
+#version 2
+struct bar { };
+"""
+ ast = parser.parse(src)
+ self.assertEquals(ast.asList(),
+ [['metadata', 'version', '1'],
+ ['struct', 'foo', []],
+ ['metadata', 'version', '2'],
+ ['struct', 'bar', []]])
+
+class TestErrors(unittest.TestCase):
+ def syntax_error(self, src, regex):
+ with self.assertRaisesRegexp(pyparsing.ParseSyntaxException, regex):
+ parser.parse(src)
+
+ def test_missing_struct_syntax(self):
+ self.syntax_error('struct { uint32_t bar; };',
+ 'Expected identifier \(at char 7\)')
+ self.syntax_error('struct foo uint32_t bar; };',
+ 'Expected "{" \(at char 11\)')
+ self.syntax_error('struct foo { uint32_t bar; ;',
+ 'Expected "}" \(at char 27\)')
+ self.syntax_error('struct foo { uint32_t bar; }',
+ 'Expected ";" \(at char 28\)')
+
+ def test_invalid_type_name(self):
+ self.syntax_error('struct foo { list<of_action_t> bar; }',
+ 'Expected "\(" \(at char 17\)')
+ self.syntax_error('struct foo { uint32_t[10 bar; }',
+ 'Expected "\]" \(at char 24\)')
+
+ def test_invalid_member_syntax(self):
+ self.syntax_error('struct foo { bar; }',
+ 'Expected identifier \(at char 16\)')
+ self.syntax_error('struct foo { uint32_t bar baz; }',
+ 'Expected ";" \(at char 26\)')
+
+
+if __name__ == '__main__':
+ unittest.main()