def test_interp(self):
assert self.parse_expr(r'``') == ast.InterpString([''], [])
assert self.parse_expr(r'`${1}`') == ast.InterpString(
['', ''], [ast.Number(1)])
assert self.parse_expr(r'`foo${1}bar`') == ast.InterpString(
['foo', 'bar'], [ast.Number(1)])
assert self.parse_expr(r'`${1 + 2}`') == ast.InterpString(
['', ''], [ast.BinOp('+', ast.Number(1), ast.Number(2), oppos=(18, 19))])
def test_various_kinds_of_calls(self):
r = self.parse('x(1, 2, 3)')
assert r == ast.Call(
ast.Identifier('x'),
[ast.Number(1), ast.Number(2),
ast.Number(3)])
r = self.parse('(1)(2)')
assert r == ast.Call(ast.Number(1), [ast.Number(2)])
def test_var(self):
r = self.parse('''
let x;
x = 3;
x = x + 1;
''')
assert r == [
ast.VarDeclaration([ast.Var('x', ast.NoTypeDecl(), None)]),
ast.Assignment('x', ast.Number(3)),
ast.Assignment('x', ast.BinOp('+', ast.Identifier('x'),
ast.Number(1), oppos=(46, 47)))]
def test_var(self):
r = self.parse('''
var x;
x = 3;
x = x + 1;
''')
assert r == [
ast.VarDeclaration(['x']),
ast.Assignment('x', ast.Number(3)),
ast.Assignment('x',
ast.BinOp('+', ast.Identifier('x'), ast.Number(1)))
]
def test_call_with_named_args(self):
r = self.parse('x(a=1, b=2)')
assert r == ast.Call(ast.Identifier('x'), [], [
ast.NamedArg('a', ast.Number(1)),
ast.NamedArg('b', ast.Number(2)),
])
r = self.parse('x(1, b=2)')
assert r == ast.Call(ast.Identifier('x'), [ast.Number(1)], [
ast.NamedArg('b', ast.Number(2)),
])
self.parse_bad('x(1=b)')
self.parse_bad('x(1, a=2, 3')
def test_while_loop(self):
r = self.parse('''
let i, s;
i = 0;
while i < 10 {
i = i + 1;
s = s + i;
}
return s;
''')
assert r == [
ast.VarDeclaration([ast.Var('i', ast.NoTypeDecl(), None),
ast.Var('s', ast.NoTypeDecl(), None)]),
ast.Assignment('i', ast.Number(0)),
ast.While(
ast.BinOp('<', ast.Identifier('i'), ast.Number(10), oppos=(51, 52)), [
ast.Assignment('i', ast.BinOp(
'+', ast.Identifier('i'), ast.Number(1), oppos=(72, 73))),
ast.Assignment('s', ast.BinOp(
'+', ast.Identifier('s'), ast.Identifier('i'), oppos=(91, 92)))]),
ast.Return(ast.Identifier('s'))]
def test_while_loop(self):
r = self.parse('''
var i, s;
i = 0;
while i < 10 {
i = i + 1;
s = s + i;
}
return s;
''')
assert r == [
ast.VarDeclaration(['i', 's']),
ast.Assignment('i', ast.Number(0)),
ast.While(ast.BinOp('<', ast.Identifier('i'), ast.Number(10)), [
ast.Assignment(
'i', ast.BinOp('+', ast.Identifier('i'), ast.Number(1))),
ast.Assignment(
's',
ast.BinOp('+', ast.Identifier('s'), ast.Identifier('i')))
]),
ast.Return(ast.Identifier('s'))
]
def expression_number(state, p):
return ast.Number(int(p[0].getstr()), srcpos=sr(p))
def constant_val_int(state, p):
return ast.Number(int(p[0].getstr()), srcpos=sr(p))
def test_add(self):
assert self.parse('1 + 1') == ast.BinOp('+', ast.Number(1),
ast.Number(1))
def expression_number(state, p):
return ast.Number(int(p[0].getstr()))