def test15parseConditionalExpression(self):
parser = Parser()
parser.src = '1+2 ? 4*2 : 5'
parser.reset()
node = parser.parseConditionalExpression(False)
self.assertEqual(type(node), AST.ConditionalExpression)
self.assertEqual(node.expr.op, '+')
self.assertEqual(node.left.op, '*')
self.assertEqual(node.right.value, '5')
def test11LTLookAhead(self):
parser = Parser()
parser.src = 'asd eee\nddd\n'
parser.reset()
self.assertEqual(parser.lookup()[1], 'asd')
parser.nextToken()
self.assertEqual(parser.LTAhead(), False)
parser.nextToken()
self.assertEqual(parser.lookup()[1], 'ddd')
self.assertEqual(parser.LTAhead(), True)
parser.nextToken()
self.assertEqual(parser.LTAhead(), True)
def test14parseBinaryExpression(self):
parser = Parser()
parser.src = '1/2'
parser.reset()
node = parser.parseBinaryExpression(False, 0)
self.assertEqual(type(node), AST.BinaryExpression)
self.assertEqual(node.left.value , '1')
self.assertEqual(node.right.value, '2')
self.assertEqual(node.op, '/')
parser.src = 'a<<1>c>>d'
parser.reset()
node = parser.parseBinaryExpression(False, 0)
self.assertEqual(type(node.left), AST.BinaryExpression)
self.assertEqual(type(node.right), AST.BinaryExpression)
self.assertEqual(node.op, '>')
self.assertEqual(node.left.op, '<<')
self.assertEqual(node.left.left.name, 'a')
self.assertEqual(node.left.right.value, '1')
self.assertEqual(node.right.op, '>>')
self.assertEqual(node.right.left.name, 'c')
self.assertEqual(node.right.right.name, 'd')
parser.src = 'a != b in c &2'
parser.reset()
node = parser.parseBinaryExpression(False, 0)
self.assertEqual(node.op, '&')
self.assertEqual(node.left.op, '!=')
self.assertEqual(node.right.value, '2')
self.assertEqual(node.left.right.op, 'in')
parser.src = 'a + b in d'
parser.reset()
node = parser.parseBinaryExpression(False, 0)
self.assertEqual(node.op, 'in')
self.assertEqual(node.left.op, '+')
parser.src = 'a + b in d'
parser.reset()
node = parser.parseBinaryExpression(True,0)
self.assertEqual(node.op, '+')
self.assertEqual(node.left.name, 'a')
self.assertEqual(node.right.name, 'b')
def test13UnaryExpression(self):
parser = Parser()
parser.src = 'a++ delete c void d typeof e\n ++f \n --g +h -i ~j !k'
parser.reset()
node = parser.parseUnaryExpression()
self.assertEqual(type(node), AST.PostfixExpression)
node = parser.parseUnaryExpression()
self.assertEqual(type(node), AST.UnaryExpression)
self.assertEqual(node.expr.name, 'c')
self.assertEqual(node.op, 'delete')
node = parser.parseUnaryExpression()
self.assertEqual(node.expr.name, 'd')
self.assertEqual(node.op, 'void')
node = parser.parseUnaryExpression()
self.assertEqual(node.expr.name, 'e')
self.assertEqual(node.op, 'typeof')
node = parser.parseUnaryExpression()
self.assertEqual(node.expr.name, 'f')
self.assertEqual(node.op, '++')
node = parser.parseUnaryExpression()
self.assertEqual(node.expr.name, 'g')
self.assertEqual(node.op, '--')
node = parser.parseUnaryExpression()
self.assertEqual(node.expr.name, 'h')
self.assertEqual(node.op, '+')
node = parser.parseUnaryExpression()
self.assertEqual(node.expr.name, 'i')
self.assertEqual(node.op, '-')
node = parser.parseUnaryExpression()
self.assertEqual(node.expr.name, 'j')
self.assertEqual(node.op, '~')
node = parser.parseUnaryExpression()
self.assertEqual(node.expr.name, 'k')
self.assertEqual(node.op, '!')
def test16parseAssignmentExpression(self):
parser = Parser()
parser.src = 'b[1]=33+=4'
parser.reset()
node = parser.parseAssignmentExpression(False)
self.assertEqual(type(node), AST.AssignmentExpression)
self.assertEqual(node.left.property.value, '1')
self.assertEqual(node.right.op, '+=')
self.assertEqual(node.right.right.value, '4')
parser.src = 'b/=33'
parser.reset()
node = parser.parseAssignmentExpression(False)
self.assertEqual(type(node), AST.AssignmentExpression)
self.assertEqual(node.left.name, 'b')
self.assertEqual(node.op, '/=')
def test12PostfixExpression(self):
parser = Parser()
parser.src='a ++ b-- c\n++'
parser.reset()
node = parser.parsePostfixExpression()
self.assertEqual(type(node), AST.PostfixExpression)
self.assertEqual(node.expr.name, 'a')
self.assertEqual(node.op, '++')
node = parser.parsePostfixExpression()
self.assertEqual(node.expr.name, 'b')
self.assertEqual(node.op, '--')
node = parser.parsePostfixExpression()
self.assertEqual(type(node), AST.Identifier)
self.assertEqual(node.name, 'c')
self.assertEqual(parser.nextToken()[1],'++')
def test08ParseLeftHandSideExpression(self):
parser = Parser()
parser.src = 'a 1'
parser.reset()
node = parser.parseLeftHandSideExpression()
self.assertEqual(type(node), AST.Identifier)
self.assertEqual(node.name, 'a')
node = parser.parseLeftHandSideExpression()
self.assertEqual(type(node), AST.NumericLiteral)
self.assertEqual(node.value, '1')
parser.src = 'a[1] asd[b]'
parser.reset()
node = parser.parseLeftHandSideExpression()
self.assertEqual(type(node), AST.Property)
self.assertEqual(node.object.name, 'a')
self.assertEqual(node.property.value, '1')
node = parser.parseLeftHandSideExpression()
self.assertEqual(type(node), AST.Property)
self.assertEqual(node.object.name, 'asd')
self.assertEqual(node.property.name, 'b')
parser.src = 'a.b.c'
parser.reset()
node = parser.parseLeftHandSideExpression()
self.assertEqual(type(node), AST.Property)
self.assertEqual(node.property.name, 'c')
self.assertEqual(node.object.property.name, 'b')
self.assertEqual(node.object.object.name, 'a')
def test09ParseCallLeftHandSideExpression(self):
parser = Parser()
parser.src = 'b() c()() d(1)(2,a) '
parser.reset()
node = parser.parseLeftHandSideExpression()
self.assertEqual(type(node), AST.Call)
self.assertEqual(type(node.expr), AST.Identifier)
self.assertEqual(node.expr.name, 'b')
node = parser.parseLeftHandSideExpression()
self.assertEqual(type(node), AST.Call)
self.assertEqual(type(node.expr), AST.Call)
self.assertEqual(node.expr.expr.name, 'c')
node = parser.parseLeftHandSideExpression()
self.assertEqual(len(node.expr.args), 1)
self.assertEqual(type(node.expr.args[0]), AST.NumericLiteral)
self.assertEqual(node.expr.args[0].value, '1')
self.assertEqual(len(node.args), 2)
self.assertEqual(type(node.args[0]), AST.NumericLiteral)
self.assertEqual(type(node.args[1]), AST.Identifier)
self.assertEqual(node.args[0].value, '2')
self.assertEqual(node.args[1].name, 'a')
parser.src = 'new a() new new b(a)(23,3)(12,c,b)'
parser.reset()
node = parser.parseLeftHandSideExpression()
self.assertEqual(type(node), AST.New)
self.assertEqual(type(node.expr), AST.Identifier)
self.assertEqual(node.expr.name, 'a')
self.assertEqual(node.args, [])
node = parser.parseLeftHandSideExpression()
self.assertEqual(type(node), AST.Call)
self.assertEqual(len(node.args), 3)
self.assertEqual(type(node.expr), AST.New)
self.assertEqual(len(node.expr.args), 2)
self.assertEqual(type(node.expr.expr), AST.New)
self.assertEqual(len(node.expr.expr.args), 1)
self.assertEqual(node.expr.expr.args[0].name, 'a')
parser.src = 'new a.b(1)'
parser.reset()
node = parser.parseLeftHandSideExpression()
self.assertEqual(type(node), AST.New)
self.assertEqual(type(node.expr), AST.Property)
self.assertEqual(node.expr.object.name, 'a')
self.assertEqual(node.expr.property.name, 'b')
self.assertEqual(len(node.args), 1)
def test10PrimaryExpression(self):
parser = Parser()
parser.src = 'this asd false true null "dd" 56.7e34 /asd/i [] [1,a,,3]'
parser.reset()
node = parser.parsePrimaryExpression()
self.assertEqual(type(node), AST.This)
node = parser.parsePrimaryExpression()
self.assertEqual(type(node), AST.Identifier)
node = parser.parsePrimaryExpression()
self.assertEqual(type(node), AST.BoolLiteral)
self.assertEqual(node.value, 'false')
node = parser.parsePrimaryExpression()
self.assertEqual(type(node), AST.BoolLiteral)
self.assertEqual(node.value, 'true')
node = parser.parsePrimaryExpression()
self.assertEqual(type(node), AST.NullLiteral)
self.assertEqual(node.value, 'null')
node = parser.parsePrimaryExpression()
self.assertEqual(type(node), AST.Literal)
self.assertEqual(node.value, 'dd')
node = parser.parsePrimaryExpression()
self.assertEqual(type(node), AST.NumericLiteral)
self.assertEqual(node.value, '56.7e34')
node = parser.parsePrimaryExpression()
self.assertEqual(type(node), AST.RegExpLiteral)
self.assertEqual(node.value, '/asd/i')
node = parser.parsePrimaryExpression()
self.assertEqual(type(node), AST.Array)
node = parser.parsePrimaryExpression()
self.assertEqual(len(node.items), 4)
self.assertEqual(node.items[0].value, '1')
self.assertEqual(node.items[1].name, 'a')
self.assertEqual(type(node.items[2]), AST.HoleLiteral)
parser.src ='{} {a:1} {a:1,b:a,1:2} {get a() {var a=1;},set "asd"(val) {}, set a(value) {}}'
parser.reset()
node = parser.parsePrimaryExpression()
self.assertEqual(type(node), AST.ObjectLiteral)
node = parser.parsePrimaryExpression()
self.assertEqual(len(node.properties), 1)
self.assertEqual(type(node.properties[0]), AST.ObjectProperty)
self.assertEqual(node.properties[0].key, 'a')
self.assertEqual(node.properties[0].value.value, '1')
node = parser.parsePrimaryExpression()
self.assertEqual(len(node.properties), 3)
self.assertEqual(node.properties[1].key, 'b')
self.assertEqual(node.properties[1].value.name, 'a')
self.assertEqual(node.properties[2].key, '1')
self.assertEqual(node.properties[2].value.value, '2')
node = parser.parsePrimaryExpression()
self.assertEqual(len(node.properties), 2)
self.assertEqual(type(node.properties[0]), AST.ObjectGetSetProperty)
self.assertEqual(len(node.properties[0].getterBody), 1)
self.assertEqual(type(node.properties[0].setterBody), list)
self.assertEqual(node.properties[0].paramName, 'value')
self.assertEqual(node.properties[0].key, 'a')
self.assertEqual(type(node.properties[1]), AST.ObjectGetSetProperty)
self.assertEqual(node.properties[1].key, 'asd')
self.assertEqual(node.properties[1].getterBody, None)
self.assertEqual(type(node.properties[1].setterBody), list)
self.assertEqual(node.properties[1].paramName, 'val')
parser.src ='{get :1, set:3+3}'
parser.reset()
node = parser.parsePrimaryExpression()
self.assertEqual(type(node), AST.ObjectLiteral)
self.assertEqual(node.properties[0].key, 'get')
self.assertEqual(node.properties[0].value.value, '1')
self.assertEqual(node.properties[1].key, 'set')
self.assertEqual(node.properties[1].value.op, '+')
parser.src = '({}) ([],{},asd)'
parser.reset()
node = parser.parsePrimaryExpression()
self.assertEqual(type(node), AST.ObjectLiteral)
node = parser.parsePrimaryExpression()
self.assertEqual(type(node), AST.BinaryExpression)
self.assertEqual(type(node.right), AST.Identifier)
self.assertEqual(node.op, ',')
self.assertEqual(type(node.left), AST.BinaryExpression)
self.assertEqual(type(node.left.left), AST.Array)
self.assertEqual(type(node.left.right), AST.ObjectLiteral)
