ui/node_modules/@lezer/python/test/statement.txt

# Function definition

def foo():
  pass
def bar(a: str, b = 22, **c) -> num:
  pass

==>

Script(
  FunctionDefinition(def,VariableName,ParamList,Body(PassStatement(pass))),
  FunctionDefinition(def,VariableName,ParamList(VariableName, TypeDef(VariableName), VariableName, AssignOp, Number, VariableName),
    TypeDef(VariableName), Body(PassStatement(pass))))

# Single-line function definition

def foo(a, b): return a + b

==>

Script(FunctionDefinition(def,VariableName,ParamList(VariableName, VariableName),
  Body(ReturnStatement(return, BinaryExpression(VariableName, ArithOp, VariableName)))))

# Return with no body

def foo(a, b):
  a = b
  return

==>

Script(FunctionDefinition(def,VariableName,ParamList(VariableName, VariableName),
  Body(AssignStatement(VariableName, AssignOp, VariableName), ReturnStatement(return))))

# Conditional

if a: b()

if 1 + 3:
  pass
elif 55 < 2:
  pass
else:
  pass

==>

Script(
  IfStatement(if, VariableName, Body(ExpressionStatement(CallExpression(VariableName, ArgList))))
  IfStatement(if, BinaryExpression(Number, ArithOp, Number), Body(PassStatement(pass)),
              elif, BinaryExpression(Number, CompareOp, Number), Body(PassStatement(pass)),
              else, Body(PassStatement(pass))))

# Assignment

a = 4
b: str = "hi"
c, d, e = None
f = g = False
h += 1

==>

Script(
  AssignStatement(VariableName, AssignOp, Number),
  AssignStatement(VariableName, TypeDef(VariableName), AssignOp, String),
  AssignStatement(VariableName, VariableName, VariableName, AssignOp, None),
  AssignStatement(VariableName, AssignOp, VariableName, AssignOp, Boolean),
  UpdateStatement(VariableName, UpdateOp, Number))

# For loops

for a, b in woop():
  doStuff(b, a)

==>

Script(ForStatement(for, VariableName, VariableName, in CallExpression(VariableName, ArgList),
  Body(ExpressionStatement(CallExpression(VariableName, ArgList(VariableName, VariableName))))))

# Try statements

try:
  pass
except SomeException as e:
  pass
except OtherException:
  pass
else:
  pass
finally:
  pass

==>

Script(TryStatement(
  try, Body(PassStatement(pass)),
  except, VariableName, as, VariableName, Body(PassStatement(pass)),
  except VariableName, Body(PassStatement(pass)),
  else Body(PassStatement(pass)),
  finally Body(PassStatement(pass))))

# With statements

with open("x") as file:
  pass
async with foo as bar:
  pass

==>

Script(
  WithStatement(with, CallExpression(VariableName, ArgList(String)), as, VariableName, Body(PassStatement(pass))),
  WithStatement(async, with, VariableName, as, VariableName, Body(PassStatement(pass))))

# Class definition

class Foo:
  prop = 0
  def __init__(self):
    pass
  def plus(self):
    self.prop += 1

class Bar(Foo): pass

==>

Script(
  ClassDefinition(class, VariableName, Body(
    AssignStatement(VariableName, AssignOp, Number),
    FunctionDefinition(def, VariableName, ParamList(VariableName), Body(PassStatement(pass))),
    FunctionDefinition(def, VariableName, ParamList(VariableName), Body(
      UpdateStatement(MemberExpression(VariableName, PropertyName), UpdateOp, Number))))),
  ClassDefinition(class, VariableName, ArgList(VariableName), Body(PassStatement(pass))))

# Scope statements

global a
nonlocal b, c

==>

Script(
  ScopeStatement(global, VariableName),
  ScopeStatement(nonlocal, VariableName, VariableName))

# Decorators

@Something.X
def f(): pass

@Other(arg1, arg2)
class C: pass

==>

Script(
  DecoratedStatement(Decorator(At, VariableName, VariableName),
    FunctionDefinition(def, VariableName, ParamList, Body(PassStatement(pass)))),
  DecoratedStatement(Decorator(At, VariableName, ArgList(VariableName, VariableName)),
    ClassDefinition(class, VariableName, Body(PassStatement(pass)))))

# Small statements

def x(): return 5
raise Exception("woop")
while False:
  break
  continue
assert 1 == 2
del x[2]

==>

Script(
  FunctionDefinition(def, VariableName, ParamList, Body(ReturnStatement(return, Number))),
  RaiseStatement(raise, CallExpression(VariableName, ArgList(String))),
  WhileStatement(while, Boolean, Body(BreakStatement(break), ContinueStatement(continue))),
  AssertStatement(assert, BinaryExpression(Number, CompareOp, Number)),
  DeleteStatement(del, MemberExpression(VariableName, Number)))

# Import statements

import datetime
from something.other import one, two

==>

Script(
  ImportStatement(import, VariableName),
  ImportStatement(from, VariableName, VariableName, import VariableName, VariableName))

# One-line small statements

x; y(); z = 2
raise "oh"

==>

Script(
  StatementGroup(
    ExpressionStatement(VariableName),
    ExpressionStatement(CallExpression(VariableName, ArgList)),
    AssignStatement(VariableName, AssignOp, Number)),
  RaiseStatement(raise, String))

# Nested bodies

def x():
  ok
  if not ok:
    while True:
      one
      two
  three
  if None:
    four
  else:
    five
  six
seven

==>

Script(
  FunctionDefinition(def, VariableName, ParamList, Body(
    ExpressionStatement(VariableName),
    IfStatement(if, UnaryExpression(not, VariableName), Body(
      WhileStatement(while, Boolean, Body(
        ExpressionStatement(VariableName),
        ExpressionStatement(VariableName))))),
    ExpressionStatement(VariableName),
    IfStatement(if, None, Body(
      ExpressionStatement(VariableName)
    ), else, Body(
      ExpressionStatement(VariableName))),
    ExpressionStatement(VariableName))),
  ExpressionStatement(VariableName))

# Empty and commented lines

if None:
  one

  two

  four
# comment
  five
six

==>

Script(
  IfStatement(if, None, Body(
    ExpressionStatement(VariableName),
    ExpressionStatement(VariableName),
    ExpressionStatement(VariableName),
    Comment,
    ExpressionStatement(VariableName))),
  ExpressionStatement(VariableName))

# Escaped newlines

x = 1 + \
  2

==>

Script(AssignStatement(VariableName, AssignOp, BinaryExpression(Number, ArithOp, Number)))

# Python 2 compatibility

print "hi"
print(print.something)

try:
  raise Exception, "foo"
except Exception, foo:
  pass

==>

Script(
  PrintStatement(print, String),
  ExpressionStatement(CallExpression(VariableName, ArgList(MemberExpression(VariableName, PropertyName)))),
  TryStatement(try, Body(RaiseStatement(raise, VariableName, String)),
               except, VariableName, VariableName, Body(PassStatement(pass))))

# Require indentation on body

def foo():
pass

==>

Script(FunctionDefinition(def,VariableName,ParamList,Body(⚠)), PassStatement(pass))

# Nested else

if a:
  if b:
    pass
else:
  pass

==>

Script(IfStatement(if, VariableName, Body(
  IfStatement(if, VariableName, Body(PassStatement(pass)))),
  else, Body(PassStatement(pass))))

# Self not reserved

self = True

==>

Script(AssignStatement(VariableName,AssignOp,Boolean))

# Trailing whitespace in block

def x():
  one
  
  two

==>

Script(FunctionDefinition(def,VariableName,ParamList,Body(ExpressionStatement(VariableName),ExpressionStatement(VariableName))))

# Can handle tab indentation

class Employee:
	first_name: str
        last_name: str

	def __init__(self, a):
		self.first_name = a
	  	self.last_name = a

==>

Script(ClassDefinition(class,VariableName,Body(
  AssignStatement(VariableName,TypeDef(VariableName)),
  AssignStatement(VariableName,TypeDef(VariableName)),
  FunctionDefinition(def,VariableName,ParamList(VariableName,VariableName),Body(
    AssignStatement(MemberExpression(VariableName,PropertyName),AssignOp,VariableName),
    AssignStatement(MemberExpression(VariableName,PropertyName),AssignOp,VariableName))))))

# Parses match statements

match foo:
  case 1:
    pass
  case Point("a", True) as z | a.b | {x: None, **y}:
    pass
  case [a, b, *rest] | (p, q):
    pass

==>

Script(MatchStatement(match,VariableName,MatchBody(
  MatchClause(case,
    LiteralPattern(Number),
    Body(PassStatement(pass))),
  MatchClause(case,
    OrPattern(
      AsPattern(
        ClassPattern(VariableName,PatternArgList(LiteralPattern(String),LiteralPattern(Boolean))),
        as,VariableName),
      LogicOp,
      AttributePattern(VariableName,PropertyName),
      LogicOp,
      MappingPattern(VariableName,LiteralPattern(None),CapturePattern(VariableName))),
    Body(PassStatement(pass))),
  MatchClause(case,
      OrPattern(SequencePattern(
        CapturePattern(VariableName),
        CapturePattern(VariableName),
        StarPattern(CapturePattern(VariableName))),
      LogicOp,
      SequencePattern(CapturePattern(VariableName),CapturePattern(VariableName))),
    Body(PassStatement(pass))))))

# Type Params

class ClassA[T: str]:
  def method1(self) -> T:
    pass

def func[**T](a: T, b: T) -> T:
  pass

==>

Script(
  ClassDefinition(class,VariableName,
    TypeParamList(TypeParam(VariableName,TypeDef(":",VariableName))),
    Body(FunctionDefinition(def,VariableName,ParamList(VariableName),TypeDef(VariableName),
      Body(PassStatement(pass))))),
  FunctionDefinition(def,VariableName,TypeParamList(TypeParam(VariableName)),
    ParamList(VariableName,TypeDef(VariableName),VariableName,TypeDef(VariableName)),
    TypeDef(VariableName),
    Body(PassStatement(pass))))

# Type Definition

type Point = tuple[float, float]

==>

Script(TypeDefinition(type,VariableName,MemberExpression(VariableName,VariableName,",",VariableName)))