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 testConsts(self):
"""Tests some constants and struct members initialized with them."""
source = """\
module my_module;
struct MyStruct {
const int8 kNumber = -1;
int8 number@0 = kNumber;
};
"""
expected = ast.Mojom(
ast.Module(('IDENTIFIER', 'my_module'), None),
ast.ImportList(),
[ast.Struct(
'MyStruct', None,
ast.StructBody(
[ast.Const('kNumber', 'int8', '-1'),
ast.StructField('number', None, ast.Ordinal(0), 'int8',
('IDENTIFIER', 'kNumber'))]))])
self.assertEquals(parser.Parse(source, "my_file.mojom"), expected)
def p_const(self, p): """const : attribute_section CONST typename NAME EQUALS constant SEMI""" p[0] = ast.Const(p[4], p[1], p[3], p[6])
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] import "my_import";
[Attr2=2] struct MyStruct {
[Attr3=3] int32 a;
};
[Attr4=4] union MyUnion {
[Attr5=5] int32 a;
};
[Attr6=6] enum MyEnum {
[Attr7=7] a
};
[Attr8=8] interface MyInterface {
[Attr9=9] MyMethod([Attr10=10] int32 a) => ([Attr11=11] bool b);
};
[Attr12=12] const double kMyConst = 1.23;
"""
expected4 = ast.Mojom(
ast.Module(('IDENTIFIER', 'my_module'),
ast.AttributeList([ast.Attribute("Attr0", 0)])),
ast.ImportList(ast.Import(
ast.AttributeList([ast.Attribute("Attr1", 1)]),
"my_import")),
[ast.Struct(
'MyStruct',
ast.AttributeList(ast.Attribute("Attr2", 2)),
ast.StructBody(
ast.StructField(
'a', ast.AttributeList([ast.Attribute("Attr3", 3)]),
None, 'int32', None))),
ast.Union(
'MyUnion',
ast.AttributeList(ast.Attribute("Attr4", 4)),
ast.UnionBody(
ast.UnionField(
'a', ast.AttributeList([ast.Attribute("Attr5", 5)]), None,
'int32'))),
ast.Enum(
'MyEnum',
ast.AttributeList(ast.Attribute("Attr6", 6)),
ast.EnumValueList(
ast.EnumValue(
'VALUE', ast.AttributeList([ast.Attribute("Attr7", 7)]),
None))),
ast.Interface(
'MyInterface',
ast.AttributeList(ast.Attribute("Attr8", 8)),
ast.InterfaceBody(
ast.Method(
'MyMethod',
ast.AttributeList(ast.Attribute("Attr9", 9)),
None,
ast.ParameterList(
ast.Parameter(
'a',
ast.AttributeList([ast.Attribute("Attr10", 10)]),
None, 'int32')),
ast.ParameterList(
ast.Parameter(
'b',
ast.AttributeList([ast.Attribute("Attr11", 11)]),
None, 'bool'))))),
ast.Const(
'kMyConst',
ast.AttributeList(ast.Attribute("Attr12", 12)),
'double', '1.23')])
self.assertEquals(parser.Parse(source4, "my_file.mojom"), expected4)