annotate Parser/Python.asdl @ 74446:62545104f9c0

murder tabs
author Benjamin Peterson <benjamin@python.org>
date Mon, 16 Jan 2012 09:54:28 -0500
parents e1177b9167ce
children ffb2fa900cb7
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f578ca44193d add a asdl bytes type, so Bytes.s be properly typechecked
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1 -- ASDL's five builtin types are identifier, int, string, bytes, object
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3 module Python
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4 {
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5 mod = Module(stmt* body)
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6 | Interactive(stmt* body)
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7 | Expression(expr body)
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9 -- not really an actual node but useful in Jython's typesystem.
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10 | Suite(stmt* body)
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12 stmt = FunctionDef(identifier name, arguments args,
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13 stmt* body, expr* decorator_list, expr? returns)
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14 | ClassDef(identifier name,
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15 expr* bases,
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16 keyword* keywords,
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17 expr? starargs,
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18 expr? kwargs,
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19 stmt* body,
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20 expr* decorator_list)
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21 | Return(expr? value)
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22
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23 | Delete(expr* targets)
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24 | Assign(expr* targets, expr value)
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25 | AugAssign(expr target, operator op, expr value)
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26
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27 -- use 'orelse' because else is a keyword in target languages
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28 | For(expr target, expr iter, stmt* body, stmt* orelse)
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29 | While(expr test, stmt* body, stmt* orelse)
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30 | If(expr test, stmt* body, stmt* orelse)
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31 | With(withitem* items, stmt* body)
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32
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33 | Raise(expr? exc, expr? cause)
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34 | Try(stmt* body, excepthandler* handlers, stmt* orelse, stmt* finalbody)
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35 | Assert(expr test, expr? msg)
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36
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37 | Import(alias* names)
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38 | ImportFrom(identifier? module, alias* names, int? level)
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39
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40 | Global(identifier* names)
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41 | Nonlocal(identifier* names)
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42 | Expr(expr value)
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43 | Pass | Break | Continue
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44
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45 -- XXX Jython will be different
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46 -- col_offset is the byte offset in the utf8 string the parser uses
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47 attributes (int lineno, int col_offset)
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48
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49 -- BoolOp() can use left & right?
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50 expr = BoolOp(boolop op, expr* values)
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51 | BinOp(expr left, operator op, expr right)
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52 | UnaryOp(unaryop op, expr operand)
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53 | Lambda(arguments args, expr body)
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54 | IfExp(expr test, expr body, expr orelse)
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55 | Dict(expr* keys, expr* values)
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56 | Set(expr* elts)
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57 | ListComp(expr elt, comprehension* generators)
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58 | SetComp(expr elt, comprehension* generators)
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59 | DictComp(expr key, expr value, comprehension* generators)
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60 | GeneratorExp(expr elt, comprehension* generators)
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61 -- the grammar constrains where yield expressions can occur
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62 | Yield(expr? value)
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63 | YieldFrom(expr? value)
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64 -- need sequences for compare to distinguish between
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65 -- x < 4 < 3 and (x < 4) < 3
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66 | Compare(expr left, cmpop* ops, expr* comparators)
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67 | Call(expr func, expr* args, keyword* keywords,
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68 expr? starargs, expr? kwargs)
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69 | Num(object n) -- a number as a PyObject.
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70 | Str(string s) -- need to specify raw, unicode, etc?
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71 | Bytes(bytes s)
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72 | Ellipsis
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73 -- other literals? bools?
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74
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75 -- the following expression can appear in assignment context
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76 | Attribute(expr value, identifier attr, expr_context ctx)
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77 | Subscript(expr value, slice slice, expr_context ctx)
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78 | Starred(expr value, expr_context ctx)
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79 | Name(identifier id, expr_context ctx)
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80 | List(expr* elts, expr_context ctx)
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81 | Tuple(expr* elts, expr_context ctx)
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83 -- col_offset is the byte offset in the utf8 string the parser uses
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84 attributes (int lineno, int col_offset)
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85
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86 expr_context = Load | Store | Del | AugLoad | AugStore | Param
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87
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88 slice = Slice(expr? lower, expr? upper, expr? step)
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89 | ExtSlice(slice* dims)
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90 | Index(expr value)
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91
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92 boolop = And | Or
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93
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94 operator = Add | Sub | Mult | Div | Mod | Pow | LShift
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95 | RShift | BitOr | BitXor | BitAnd | FloorDiv
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96
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97 unaryop = Invert | Not | UAdd | USub
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98
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99 cmpop = Eq | NotEq | Lt | LtE | Gt | GtE | Is | IsNot | In | NotIn
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100
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101 comprehension = (expr target, expr iter, expr* ifs)
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102
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103 excepthandler = ExceptHandler(expr? type, identifier? name, stmt* body)
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104 attributes (int lineno, int col_offset)
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105
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106 arguments = (arg* args, identifier? vararg, expr? varargannotation,
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107 arg* kwonlyargs, identifier? kwarg,
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108 expr? kwargannotation, expr* defaults,
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109 expr* kw_defaults)
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110 arg = (identifier arg, expr? annotation)
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111
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112 -- keyword arguments supplied to call
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113 keyword = (identifier arg, expr value)
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114
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115 -- import name with optional 'as' alias.
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116 alias = (identifier name, identifier? asname)
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117
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118 withitem = (expr context_expr, expr? optional_vars)
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119 }
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120