def testEnums(self):
"""Tests that enum statements are correctly parsed."""
source = """\
module my_module {
enum MyEnum1 { VALUE1, VALUE2 }; // No trailing comma.
enum MyEnum2 {
VALUE1 = -1,
VALUE2 = 0,
VALUE3 = + 987, // Check that space is allowed.
VALUE4 = 0xAF12,
VALUE5 = -0x09bcd,
VALUE6 = VALUE5,
VALUE7, // Leave trailing comma.
};
} // my_module
"""
expected = ast.Mojom(
ast.Module(('IDENTIFIER', 'my_module'), None),
ast.ImportList(),
[ast.Enum(
'MyEnum1',
ast.EnumValueList([ast.EnumValue('VALUE1', None),
ast.EnumValue('VALUE2', None)])),
ast.Enum(
'MyEnum2',
ast.EnumValueList([ast.EnumValue('VALUE1', '-1'),
ast.EnumValue('VALUE2', '0'),
ast.EnumValue('VALUE3', '+987'),
ast.EnumValue('VALUE4', '0xAF12'),
ast.EnumValue('VALUE5', '-0x09bcd'),
ast.EnumValue('VALUE6', ('IDENTIFIER',
'VALUE5')),
ast.EnumValue('VALUE7', None)]))])
self.assertEquals(parser.Parse(source, "my_file.mojom"), expected)
def p_enum_1(self, p):
"""enum : attribute_section ENUM NAME LBRACE enum_value_list \
RBRACE SEMI
| attribute_section ENUM NAME LBRACE nonempty_enum_value_list \
COMMA RBRACE SEMI"""
p[0] = ast.Enum(
p[3], p[1], p[5], filename=self.filename, lineno=p.lineno(2))
def testValidInterfaceDefinitions(self):
"""Tests all types of definitions that can occur in an interface."""
source = """\
interface MyInterface {
enum MyEnum { VALUE };
const int32 kMyConst = 123;
MyMethod(int32 x) => (MyEnum y);
};
"""
expected = ast.Mojom(
None,
ast.ImportList(),
[ast.Interface(
'MyInterface',
None,
ast.InterfaceBody(
[ast.Enum('MyEnum',
None,
ast.EnumValueList(
ast.EnumValue('VALUE', None, None))),
ast.Const('kMyConst', 'int32', '123'),
ast.Method(
'MyMethod',
None,
None,
ast.ParameterList(ast.Parameter('x', None, None, 'int32')),
ast.ParameterList(ast.Parameter('y', None, None,
'MyEnum')))]))])
self.assertEquals(parser.Parse(source, "my_file.mojom"), expected)
def testValidStructDefinitions(self):
"""Tests all types of definitions that can occur in a struct."""
source = """\
struct MyStruct {
enum MyEnum { VALUE };
const double kMyConst = 1.23;
int32 a;
SomeOtherStruct b; // Invalidity detected at another stage.
};
"""
expected = ast.Mojom(
None,
ast.ImportList(),
[ast.Struct(
'MyStruct',
None,
ast.StructBody(
[ast.Enum('MyEnum',
None,
ast.EnumValueList(
ast.EnumValue('VALUE', None, None))),
ast.Const('kMyConst', 'double', '1.23'),
ast.StructField('a', None, None, 'int32', None),
ast.StructField('b', None, None, 'SomeOtherStruct', None)]))])
self.assertEquals(parser.Parse(source, "my_file.mojom"), expected)
def p_enum_2(self, p):
"""enum : attribute_section ENUM NAME SEMI"""
p[0] = ast.Enum(p[3],
p[1],
None,
filename=self.filename,
lineno=p.lineno(2))
def testValidAttributes(self):
"""Tests parsing attributes (and attribute lists)."""
# Note: We use structs because they have (optional) attribute lists.
# Empty attribute list.
source1 = "[] struct MyStruct {};"
expected1 = ast.Mojom(
None,
ast.ImportList(),
[ast.Struct('MyStruct', ast.AttributeList(), ast.StructBody())])
self.assertEquals(parser.Parse(source1, "my_file.mojom"), expected1)
# One-element attribute list, with name value.
source2 = "[MyAttribute=MyName] struct MyStruct {};"
expected2 = ast.Mojom(
None,
ast.ImportList(),
[ast.Struct(
'MyStruct',
ast.AttributeList(ast.Attribute("MyAttribute", "MyName")),
ast.StructBody())])
self.assertEquals(parser.Parse(source2, "my_file.mojom"), expected2)
# Two-element attribute list, with one string value and one integer value.
source3 = "[MyAttribute1 = \"hello\", MyAttribute2 = 5] struct MyStruct {};"
expected3 = ast.Mojom(
None,
ast.ImportList(),
[ast.Struct(
'MyStruct',
ast.AttributeList([ast.Attribute("MyAttribute1", "hello"),
ast.Attribute("MyAttribute2", 5)]),
ast.StructBody())])
self.assertEquals(parser.Parse(source3, "my_file.mojom"), expected3)
# Various places that attribute list is allowed.
source4 = """\
[Attr0=0] module my_module;
[Attr1=1] struct MyStruct {
[Attr2=2] int32 a;
};
[Attr3=3] union MyUnion {
[Attr4=4] int32 a;
};
[Attr5=5] enum MyEnum {
[Attr6=6] a
};
[Attr7=7] interface MyInterface {
[Attr8=8] MyMethod([Attr9=9] int32 a) => ([Attr10=10] bool b);
};
"""
expected4 = ast.Mojom(
ast.Module(('IDENTIFIER', 'my_module'),
ast.AttributeList([ast.Attribute("Attr0", 0)])),
ast.ImportList(),
[ast.Struct(
'MyStruct',
ast.AttributeList(ast.Attribute("Attr1", 1)),
ast.StructBody(
ast.StructField(
'a', ast.AttributeList([ast.Attribute("Attr2", 2)]),
None, 'int32', None))),
ast.Union(
'MyUnion',
ast.AttributeList(ast.Attribute("Attr3", 3)),
ast.UnionBody(
ast.UnionField(
'a', ast.AttributeList([ast.Attribute("Attr4", 4)]), None,
'int32'))),
ast.Enum(
'MyEnum',
ast.AttributeList(ast.Attribute("Attr5", 5)),
ast.EnumValueList(
ast.EnumValue(
'VALUE', ast.AttributeList([ast.Attribute("Attr6", 6)]),
None))),
ast.Interface(
'MyInterface',
ast.AttributeList(ast.Attribute("Attr7", 7)),
ast.InterfaceBody(
ast.Method(
'MyMethod',
ast.AttributeList(ast.Attribute("Attr8", 8)),
None,
ast.ParameterList(
ast.Parameter(
'a', ast.AttributeList([ast.Attribute("Attr9", 9)]),
None, 'int32')),
ast.ParameterList(
ast.Parameter(
'b',
ast.AttributeList([ast.Attribute("Attr10", 10)]),
None, 'bool')))))])
self.assertEquals(parser.Parse(source4, "my_file.mojom"), expected4)
