Mercurial > python-compiler.rs
annotate src/ast_convert.rs @ 87:624393ed3b0b
Don’t cast anything to str, except Num for now.
| author | Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> |
|---|---|
| date | Wed, 22 Jun 2016 23:05:24 +0100 |
| parents | a7b1db623f41 |
| children | 5923cd4bfc36 |
| rev | line source |
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86
a7b1db623f41
Implement NameConstant correctly.
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1 use python_ast::{Module, stmt, expr, expr_context, cmpop, boolop, operator, unaryop, arguments, arg, alias, comprehension, keyword, withitem, excepthandler, slice, name_constant}; |
| 0 | 2 |
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86
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Implement NameConstant correctly.
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3 use cpython::{Python, PyObject, PyBool, PyResult}; |
| 0 | 4 use cpython::ObjectProtocol; //for call method |
| 5 | |
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6 fn get_str(py: Python, object: PyObject) -> String { |
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87
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7 object.extract(py).unwrap() |
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8 } |
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9 |
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10 fn convert_to_str(py: Python, object: PyObject) -> String { |
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11 let pystring = object.str(py).unwrap(); |
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12 let mut string = pystring.to_string(py).unwrap(); |
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13 string.to_mut().to_string() |
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14 } |
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15 |
| 18 | 16 fn get_ctx(py: Python, object: PyObject) -> expr_context { |
| 17 let builtins_module = py.import("builtins").unwrap(); | |
| 18 let isinstance = builtins_module.get(py, "isinstance").unwrap(); | |
| 19 | |
| 20 let is_instance = |object: &PyObject, type_: &PyObject| { | |
| 21 return isinstance.call(py, (object, type_), None).unwrap().is_true(py).unwrap(); | |
| 22 }; | |
| 23 | |
| 24 let ast_module = py.import("ast").unwrap(); | |
| 25 let store_type = ast_module.get(py, "Store").unwrap(); | |
| 26 let load_type = ast_module.get(py, "Load").unwrap(); | |
| 21 | 27 let del_type = ast_module.get(py, "Del").unwrap(); |
| 18 | 28 |
| 29 let ctx = object.getattr(py, "ctx").unwrap(); | |
| 30 if is_instance(&ctx, &store_type) { | |
| 31 expr_context::Store | |
| 32 } else if is_instance(&ctx, &load_type) { | |
| 33 expr_context::Load | |
| 21 | 34 } else if is_instance(&ctx, &del_type) { |
| 35 expr_context::Del | |
| 18 | 36 } else{ |
| 37 unreachable!(); | |
| 38 } | |
| 39 } | |
| 40 | |
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41 fn parse_list<T, F: Fn(Python, PyObject) -> T>(py: Python, list: PyObject, parse: F) -> Vec<T> { |
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42 let mut exprs = vec!(); |
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43 for item in list.iter(py).unwrap() { |
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44 let item = item.unwrap(); |
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45 let item = parse(py, item); |
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46 exprs.push(item); |
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47 } |
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48 exprs |
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49 } |
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50 |
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51 fn parse_alias(py: Python, ast: PyObject) -> alias { |
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52 let ast_alias = get_str(py, ast.getattr(py, "name").unwrap()); |
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53 let asname = ast.getattr(py, "asname").unwrap(); |
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54 if asname == py.None() { |
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55 alias{name: ast_alias, asname: None} |
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56 } else { |
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57 alias{name: ast_alias, asname: Some(get_str(py, asname))} |
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58 } |
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59 } |
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60 |
| 59 | 61 fn parse_withitem(py: Python, ast: PyObject) -> withitem { |
| 62 let context_expr = ast.getattr(py, "context_expr").unwrap(); | |
| 63 let optional_vars = ast.getattr(py, "optional_vars").unwrap(); | |
| 64 | |
| 65 let context_expr = parse_expr(py, context_expr); | |
| 66 | |
| 67 if optional_vars == py.None() { | |
| 68 withitem{context_expr: context_expr, optional_vars: None} | |
| 69 } else { | |
| 70 let optional_vars = parse_expr(py, optional_vars); | |
| 71 withitem{context_expr: context_expr, optional_vars: Some(optional_vars)} | |
| 72 } | |
| 73 } | |
| 74 | |
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75 fn parse_unaryop(py: Python, ast: PyObject) -> unaryop { |
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76 let builtins_module = py.import("builtins").unwrap(); |
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77 let isinstance = builtins_module.get(py, "isinstance").unwrap(); |
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78 |
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79 let is_instance = |object: &PyObject, type_: &PyObject| { |
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80 return isinstance.call(py, (object, type_), None).unwrap().is_true(py).unwrap(); |
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81 }; |
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82 |
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83 let ast_module = py.import("ast").unwrap(); |
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84 let ast_type = ast_module.get(py, "AST").unwrap(); |
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85 let invert_type = ast_module.get(py, "Invert").unwrap(); |
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86 let not_type = ast_module.get(py, "Not").unwrap(); |
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87 let uadd_type = ast_module.get(py, "UAdd").unwrap(); |
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88 let usub_type = ast_module.get(py, "USub").unwrap(); |
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89 |
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90 assert!(is_instance(&ast, &ast_type)); |
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91 |
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92 if is_instance(&ast, &invert_type) { |
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93 unaryop::Invert |
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94 } else if is_instance(&ast, ¬_type) { |
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95 unaryop::Not |
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96 } else if is_instance(&ast, &uadd_type) { |
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97 unaryop::UAdd |
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98 } else if is_instance(&ast, &usub_type) { |
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99 unaryop::USub |
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100 } else { |
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101 unreachable!() |
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102 } |
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103 } |
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104 |
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105 fn parse_boolop(py: Python, ast: PyObject) -> boolop { |
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106 let builtins_module = py.import("builtins").unwrap(); |
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107 let isinstance = builtins_module.get(py, "isinstance").unwrap(); |
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108 |
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109 let is_instance = |object: &PyObject, type_: &PyObject| { |
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110 return isinstance.call(py, (object, type_), None).unwrap().is_true(py).unwrap(); |
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111 }; |
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112 |
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113 let ast_module = py.import("ast").unwrap(); |
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114 let ast_type = ast_module.get(py, "AST").unwrap(); |
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115 let and_type = ast_module.get(py, "And").unwrap(); |
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116 let or_type = ast_module.get(py, "Or").unwrap(); |
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117 |
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118 assert!(is_instance(&ast, &ast_type)); |
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119 |
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120 if is_instance(&ast, &and_type) { |
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121 boolop::And |
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122 } else if is_instance(&ast, &or_type) { |
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123 boolop::Or |
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124 } else { |
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125 unreachable!() |
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126 } |
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127 } |
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128 |
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129 fn parse_cmpop(py: Python, ast: PyObject) -> cmpop { |
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130 let builtins_module = py.import("builtins").unwrap(); |
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131 let isinstance = builtins_module.get(py, "isinstance").unwrap(); |
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132 |
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133 let is_instance = |object: &PyObject, type_: &PyObject| { |
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134 return isinstance.call(py, (object, type_), None).unwrap().is_true(py).unwrap(); |
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135 }; |
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136 |
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137 let ast_module = py.import("ast").unwrap(); |
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138 let ast_type = ast_module.get(py, "AST").unwrap(); |
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139 let eq_type = ast_module.get(py, "Eq").unwrap(); |
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140 let noteq_type = ast_module.get(py, "NotEq").unwrap(); |
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141 let lt_type = ast_module.get(py, "Lt").unwrap(); |
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142 let lte_type = ast_module.get(py, "LtE").unwrap(); |
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143 let gt_type = ast_module.get(py, "Gt").unwrap(); |
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144 let gte_type = ast_module.get(py, "GtE").unwrap(); |
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145 let is_type = ast_module.get(py, "Is").unwrap(); |
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146 let is_not_type = ast_module.get(py, "IsNot").unwrap(); |
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147 let in_type = ast_module.get(py, "In").unwrap(); |
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148 let not_in_type = ast_module.get(py, "NotIn").unwrap(); |
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149 |
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150 assert!(is_instance(&ast, &ast_type)); |
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151 |
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152 if is_instance(&ast, &eq_type) { |
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153 cmpop::Eq |
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154 } else if is_instance(&ast, ¬eq_type) { |
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155 cmpop::NotEq |
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156 } else if is_instance(&ast, <_type) { |
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157 cmpop::Lt |
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158 } else if is_instance(&ast, <e_type) { |
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159 cmpop::LtE |
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160 } else if is_instance(&ast, >_type) { |
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161 cmpop::Gt |
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162 } else if is_instance(&ast, >e_type) { |
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163 cmpop::GtE |
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164 } else if is_instance(&ast, &is_type) { |
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165 cmpop::Is |
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166 } else if is_instance(&ast, &is_not_type) { |
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167 cmpop::IsNot |
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168 } else if is_instance(&ast, &in_type) { |
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169 cmpop::In |
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170 } else if is_instance(&ast, ¬_in_type) { |
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171 cmpop::NotIn |
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172 } else { |
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173 unreachable!() |
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174 } |
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175 } |
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176 |
| 14 | 177 fn parse_comprehension(py: Python, ast: PyObject) -> comprehension { |
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178 let target = ast.getattr(py, "target").unwrap(); |
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179 let iter = ast.getattr(py, "iter").unwrap(); |
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180 let ifs = ast.getattr(py, "ifs").unwrap(); |
| 14 | 181 |
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182 let target = parse_expr(py, target); |
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183 let iter = parse_expr(py, iter); |
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184 let ifs = parse_list(py, ifs, parse_expr); |
| 14 | 185 |
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186 comprehension {target: target, iter: iter, ifs: ifs} |
| 14 | 187 } |
| 188 | |
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189 fn parse_keyword(py: Python, ast: PyObject) -> keyword { |
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190 let arg = ast.getattr(py, "arg").unwrap(); |
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191 let value = ast.getattr(py, "value").unwrap(); |
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192 |
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193 let arg = if arg == py.None() { |
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194 None |
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195 } else { |
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196 let arg = get_str(py, arg); |
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197 Some(arg) |
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198 }; |
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199 let value = parse_expr(py, value); |
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200 |
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201 keyword {arg: arg, value: value} |
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202 } |
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203 |
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204 fn parse_operator(py: Python, ast: PyObject) -> operator { |
| 0 | 205 let builtins_module = py.import("builtins").unwrap(); |
| 206 let isinstance = builtins_module.get(py, "isinstance").unwrap(); | |
| 207 | |
| 208 let is_instance = |object: &PyObject, type_: &PyObject| { | |
| 209 return isinstance.call(py, (object, type_), None).unwrap().is_true(py).unwrap(); | |
| 210 }; | |
| 211 | |
| 212 let ast_module = py.import("ast").unwrap(); | |
| 213 let ast_type = ast_module.get(py, "AST").unwrap(); | |
| 214 let add_type = ast_module.get(py, "Add").unwrap(); | |
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215 let sub_type = ast_module.get(py, "Sub").unwrap(); |
| 0 | 216 let mult_type = ast_module.get(py, "Mult").unwrap(); |
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217 let matmult_type = ast_module.get(py, "MatMult").unwrap(); |
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218 let div_type = ast_module.get(py, "Div").unwrap(); |
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219 let mod_type = ast_module.get(py, "Mod").unwrap(); |
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220 let pow_type = ast_module.get(py, "Pow").unwrap(); |
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221 let lshift_type = ast_module.get(py, "LShift").unwrap(); |
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222 let rshift_type = ast_module.get(py, "RShift").unwrap(); |
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223 let bitor_type = ast_module.get(py, "BitOr").unwrap(); |
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224 let bitxor_type = ast_module.get(py, "BitXor").unwrap(); |
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225 let bitand_type = ast_module.get(py, "BitAnd").unwrap(); |
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226 let floordiv_type = ast_module.get(py, "FloorDiv").unwrap(); |
| 0 | 227 |
| 228 assert!(is_instance(&ast, &ast_type)); | |
| 229 | |
| 230 if is_instance(&ast, &add_type) { | |
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231 operator::Add |
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232 } else if is_instance(&ast, &sub_type) { |
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233 operator::Sub |
| 0 | 234 } else if is_instance(&ast, &mult_type) { |
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235 operator::Mult |
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236 } else if is_instance(&ast, &matmult_type) { |
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237 operator::MatMult |
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238 } else if is_instance(&ast, &div_type) { |
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239 operator::Div |
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240 } else if is_instance(&ast, &mod_type) { |
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241 operator::Mod |
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242 } else if is_instance(&ast, &pow_type) { |
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243 operator::Pow |
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244 } else if is_instance(&ast, &lshift_type) { |
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245 operator::LShift |
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246 } else if is_instance(&ast, &rshift_type) { |
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247 operator::RShift |
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248 } else if is_instance(&ast, &bitor_type) { |
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249 operator::BitOr |
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250 } else if is_instance(&ast, &bitxor_type) { |
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251 operator::BitXor |
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252 } else if is_instance(&ast, &bitand_type) { |
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253 operator::BitAnd |
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254 } else if is_instance(&ast, &floordiv_type) { |
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255 operator::FloorDiv |
| 0 | 256 } else { |
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257 println!("operator {}", ast); |
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258 panic!() |
| 0 | 259 } |
| 260 } | |
| 261 | |
| 68 | 262 fn parse_excepthandler(py: Python, ast: PyObject) -> excepthandler { |
| 263 let type_ = ast.getattr(py, "type").unwrap(); | |
| 264 let name = ast.getattr(py, "name").unwrap(); | |
| 265 let body = ast.getattr(py, "body").unwrap(); | |
| 266 | |
| 267 let type_ = parse_optional_expr(py, type_); | |
| 268 let name = if name == py.None() { None } else { Some(get_str(py, name)) }; | |
| 269 let body = parse_list(py, body, parse_statement); | |
| 270 | |
| 271 excepthandler{type_: type_, name: name, body: body} | |
| 272 } | |
| 273 | |
| 82 | 274 fn parse_slice(py: Python, ast: PyObject) -> slice { |
| 275 let builtins_module = py.import("builtins").unwrap(); | |
| 276 let isinstance = builtins_module.get(py, "isinstance").unwrap(); | |
| 277 | |
| 278 let is_instance = |object: &PyObject, type_: &PyObject| { | |
| 279 return isinstance.call(py, (object, type_), None).unwrap().is_true(py).unwrap(); | |
| 280 }; | |
| 281 | |
| 282 let ast_module = py.import("ast").unwrap(); | |
| 283 let ast_type = ast_module.get(py, "AST").unwrap(); | |
| 284 let index_type = ast_module.get(py, "Index").unwrap(); | |
| 285 let slice_type = ast_module.get(py, "Slice").unwrap(); | |
| 286 let ext_slice_type = ast_module.get(py, "ExtSlice").unwrap(); | |
| 287 | |
| 288 assert!(is_instance(&ast, &ast_type)); | |
| 289 | |
| 290 if is_instance(&ast, &index_type) { | |
| 291 let value = ast.getattr(py, "value").unwrap(); | |
| 292 let value = parse_expr(py, value); | |
| 293 | |
| 294 slice::Index(value) | |
| 295 } else if is_instance(&ast, &slice_type) { | |
| 296 let lower = ast.getattr(py, "lower").unwrap(); | |
| 297 let upper = ast.getattr(py, "upper").unwrap(); | |
| 298 let step = ast.getattr(py, "step").unwrap(); | |
| 299 | |
| 300 let lower = parse_optional_expr(py, lower); | |
| 301 let upper = parse_optional_expr(py, upper); | |
| 302 let step = parse_optional_expr(py, step); | |
| 303 slice::Slice(lower, upper, step) | |
| 304 } else if is_instance(&ast, &ext_slice_type) { | |
| 305 let dims = ast.getattr(py, "dims").unwrap(); | |
| 306 let dims = parse_list(py, dims, parse_slice); | |
| 307 | |
| 308 slice::ExtSlice(dims) | |
| 309 } else { | |
| 310 unreachable!() | |
| 311 } | |
| 312 } | |
| 313 | |
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314 fn parse_optional_expr(py: Python, ast: PyObject) -> Option<expr> { |
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315 if ast == py.None() { |
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316 None |
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317 } else { |
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318 let ast = parse_expr(py, ast); |
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319 Some(ast) |
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320 } |
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321 } |
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322 |
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323 fn parse_expr(py: Python, ast: PyObject) -> expr { |
| 0 | 324 let builtins_module = py.import("builtins").unwrap(); |
| 325 let isinstance = builtins_module.get(py, "isinstance").unwrap(); | |
| 326 | |
| 327 let is_instance = |object: &PyObject, type_: &PyObject| { | |
| 328 return isinstance.call(py, (object, type_), None).unwrap().is_true(py).unwrap(); | |
| 329 }; | |
| 330 | |
| 331 let ast_module = py.import("ast").unwrap(); | |
| 332 let ast_type = ast_module.get(py, "AST").unwrap(); | |
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333 let unary_op_type = ast_module.get(py, "UnaryOp").unwrap(); |
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334 let bool_op_type = ast_module.get(py, "BoolOp").unwrap(); |
| 0 | 335 let bin_op_type = ast_module.get(py, "BinOp").unwrap(); |
| 336 let name_constant_type = ast_module.get(py, "NameConstant").unwrap(); | |
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337 let attribute_type = ast_module.get(py, "Attribute").unwrap(); |
| 0 | 338 let name_type = ast_module.get(py, "Name").unwrap(); |
| 339 let num_type = ast_module.get(py, "Num").unwrap(); | |
| 340 let str_type = ast_module.get(py, "Str").unwrap(); | |
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341 let list_type = ast_module.get(py, "List").unwrap(); |
| 0 | 342 let compare_type = ast_module.get(py, "Compare").unwrap(); |
| 343 let call_type = ast_module.get(py, "Call").unwrap(); | |
| 14 | 344 let listcomp_type = ast_module.get(py, "ListComp").unwrap(); |
| 16 | 345 let dictcomp_type = ast_module.get(py, "DictComp").unwrap(); |
| 17 | 346 let tuple_type = ast_module.get(py, "Tuple").unwrap(); |
| 52 | 347 let ellipsis_type = ast_module.get(py, "Ellipsis").unwrap(); |
| 73 | 348 let await_type = ast_module.get(py, "Await").unwrap(); |
| 74 | 349 let yield_type = ast_module.get(py, "Yield").unwrap(); |
| 75 | 350 let yield_from_type = ast_module.get(py, "YieldFrom").unwrap(); |
| 76 | 351 let set_type = ast_module.get(py, "Set").unwrap(); |
| 77 | 352 let setcomp_type = ast_module.get(py, "SetComp").unwrap(); |
| 78 | 353 let generatorexp_type = ast_module.get(py, "GeneratorExp").unwrap(); |
| 79 | 354 let lambda_type = ast_module.get(py, "Lambda").unwrap(); |
| 80 | 355 let ifexp_type = ast_module.get(py, "IfExp").unwrap(); |
| 81 | 356 let dict_type = ast_module.get(py, "Dict").unwrap(); |
| 82 | 357 let subscript_type = ast_module.get(py, "Subscript").unwrap(); |
| 83 | 358 let starred_type = ast_module.get(py, "Starred").unwrap(); |
| 0 | 359 |
| 360 assert!(is_instance(&ast, &ast_type)); | |
| 361 | |
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362 if is_instance(&ast, &attribute_type) { |
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363 let value = ast.getattr(py, "value").unwrap(); |
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364 let attr = ast.getattr(py, "attr").unwrap(); |
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365 |
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366 let value = parse_expr(py, value); |
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367 let attr = get_str(py, attr); |
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368 |
| 18 | 369 expr::Attribute(Box::new(value), attr, get_ctx(py, ast)) |
| 0 | 370 } else if is_instance(&ast, &name_type) { |
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371 let id = ast.getattr(py, "id").unwrap(); |
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372 let id = get_str(py, id); |
| 18 | 373 expr::Name(id, get_ctx(py, ast)) |
| 0 | 374 } else if is_instance(&ast, &name_constant_type) { |
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375 let value = ast.getattr(py, "value").unwrap(); |
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376 let boolean: PyResult<PyBool> = value.extract(py); |
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377 let constant = match boolean { |
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378 Ok(boolean) => if boolean.is_true() { |
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379 name_constant::True |
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380 } else { |
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381 name_constant::False |
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382 }, |
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383 Err(_) => { |
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384 assert!(value == py.None()); |
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385 name_constant::None_ |
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386 } |
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387 }; |
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388 expr::NameConstant(constant) |
| 0 | 389 } else if is_instance(&ast, &num_type) { |
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390 let n = ast.getattr(py, "n").unwrap(); |
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391 // FIXME: we should convert these to either bigint, double or complex. |
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392 // TODO: find a suitable bigint library. |
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393 let n = convert_to_str(py, n); |
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394 expr::Num(n) |
| 0 | 395 } else if is_instance(&ast, &str_type) { |
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396 let s = ast.getattr(py, "s").unwrap(); |
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397 let s = get_str(py, s); |
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398 expr::Str(s) |
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399 } else if is_instance(&ast, &list_type) { |
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400 let elts = ast.getattr(py, "elts").unwrap(); |
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401 let elements = parse_list(py, elts, parse_expr); |
| 18 | 402 expr::List(elements, get_ctx(py, ast)) |
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403 } else if is_instance(&ast, &unary_op_type) { |
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404 let op = ast.getattr(py, "op").unwrap(); |
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405 let operand = ast.getattr(py, "operand").unwrap(); |
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406 |
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407 let op = parse_unaryop(py, op); |
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408 let operand = parse_expr(py, operand); |
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409 |
|
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410 expr::UnaryOp(op, Box::new(operand)) |
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411 } else if is_instance(&ast, &bool_op_type) { |
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412 let op = ast.getattr(py, "op").unwrap(); |
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413 let values = ast.getattr(py, "values").unwrap(); |
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414 |
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415 let op = parse_boolop(py, op); |
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416 let values = parse_list(py, values, parse_expr); |
|
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417 |
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418 expr::BoolOp(op, values) |
| 0 | 419 } else if is_instance(&ast, &bin_op_type) { |
| 420 let left = ast.getattr(py, "left").unwrap(); | |
| 421 let op = ast.getattr(py, "op").unwrap(); | |
| 422 let right = ast.getattr(py, "right").unwrap(); | |
| 423 | |
| 424 let left = parse_expr(py, left); | |
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425 let op = parse_operator(py, op); |
| 0 | 426 let right = parse_expr(py, right); |
| 427 | |
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428 expr::BinOp(Box::new(left), op, Box::new(right)) |
| 0 | 429 } else if is_instance(&ast, &call_type) { |
| 430 let func = ast.getattr(py, "func").unwrap(); | |
| 431 let args = ast.getattr(py, "args").unwrap(); | |
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432 let keywords = ast.getattr(py, "keywords").unwrap(); |
| 0 | 433 |
| 434 let func = parse_expr(py, func); | |
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435 let args = parse_list(py, args, parse_expr); |
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436 let keywords = parse_list(py, keywords, parse_keyword); |
| 0 | 437 |
|
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438 expr::Call(Box::new(func), args, keywords) |
| 0 | 439 } else if is_instance(&ast, &compare_type) { |
| 440 let left = ast.getattr(py, "left").unwrap(); | |
| 441 let ops = ast.getattr(py, "ops").unwrap(); | |
| 442 let comparators = ast.getattr(py, "comparators").unwrap(); | |
| 443 | |
| 444 let left = parse_expr(py, left); | |
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445 let ops = parse_list(py, ops, parse_cmpop); |
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446 let comparators = parse_list(py, comparators, parse_expr); |
| 0 | 447 |
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448 expr::Compare(Box::new(left), ops, comparators) |
| 14 | 449 } else if is_instance(&ast, &listcomp_type) { |
| 450 let elt = ast.getattr(py, "elt").unwrap(); | |
| 451 let generators = ast.getattr(py, "generators").unwrap(); | |
| 452 | |
| 453 let elt = parse_expr(py, elt); | |
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454 let generators = parse_list(py, generators, parse_comprehension); |
| 14 | 455 |
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456 expr::ListComp(Box::new(elt), generators) |
| 16 | 457 } else if is_instance(&ast, &dictcomp_type) { |
| 458 let key = ast.getattr(py, "key").unwrap(); | |
| 459 let value = ast.getattr(py, "value").unwrap(); | |
| 460 let generators = ast.getattr(py, "generators").unwrap(); | |
| 461 | |
| 462 let key = parse_expr(py, key); | |
| 463 let value = parse_expr(py, value); | |
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464 let generators = parse_list(py, generators, parse_comprehension); |
| 16 | 465 |
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466 expr::DictComp(Box::new(key), Box::new(value), generators) |
| 17 | 467 } else if is_instance(&ast, &tuple_type) { |
| 468 let elts = ast.getattr(py, "elts").unwrap(); | |
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469 let elts = parse_list(py, elts, parse_expr); |
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470 expr::Tuple(elts, get_ctx(py, ast)) |
| 52 | 471 } else if is_instance(&ast, &ellipsis_type) { |
| 472 expr::Ellipsis | |
| 73 | 473 } else if is_instance(&ast, &await_type) { |
| 474 let value = ast.getattr(py, "value").unwrap(); | |
| 475 let value = parse_expr(py, value); | |
| 476 | |
| 477 expr::Await(Box::new(value)) | |
| 74 | 478 } else if is_instance(&ast, &yield_type) { |
| 479 let value = ast.getattr(py, "value").unwrap(); | |
| 480 let value = parse_optional_expr(py, value); | |
| 481 | |
| 482 expr::Yield(Box::new(value)) | |
| 75 | 483 } else if is_instance(&ast, &yield_from_type) { |
| 484 let value = ast.getattr(py, "value").unwrap(); | |
| 485 let value = parse_expr(py, value); | |
| 486 | |
| 487 expr::YieldFrom(Box::new(value)) | |
| 76 | 488 } else if is_instance(&ast, &set_type) { |
| 489 let elts = ast.getattr(py, "elts").unwrap(); | |
| 490 let elements = parse_list(py, elts, parse_expr); | |
| 491 | |
| 492 expr::Set(elements) | |
| 77 | 493 } else if is_instance(&ast, &setcomp_type) { |
| 494 let elt = ast.getattr(py, "elt").unwrap(); | |
| 495 let generators = ast.getattr(py, "generators").unwrap(); | |
| 496 | |
| 497 let elt = parse_expr(py, elt); | |
| 498 let generators = parse_list(py, generators, parse_comprehension); | |
| 499 | |
| 500 expr::SetComp(Box::new(elt), generators) | |
| 78 | 501 } else if is_instance(&ast, &generatorexp_type) { |
| 502 let elt = ast.getattr(py, "elt").unwrap(); | |
| 503 let generators = ast.getattr(py, "generators").unwrap(); | |
| 504 | |
| 505 let elt = parse_expr(py, elt); | |
| 506 let generators = parse_list(py, generators, parse_comprehension); | |
| 507 | |
| 508 expr::GeneratorExp(Box::new(elt), generators) | |
| 79 | 509 } else if is_instance(&ast, &lambda_type) { |
| 510 let args = ast.getattr(py, "args").unwrap(); | |
| 511 let body = ast.getattr(py, "body").unwrap(); | |
| 512 | |
| 513 let args = parse_arguments(py, args); | |
| 514 let body = parse_expr(py, body); | |
| 515 | |
| 516 expr::Lambda(Box::new(args), Box::new(body)) | |
| 80 | 517 } else if is_instance(&ast, &ifexp_type) { |
| 518 let test = ast.getattr(py, "test").unwrap(); | |
| 519 let body = ast.getattr(py, "body").unwrap(); | |
| 520 let orelse = ast.getattr(py, "orelse").unwrap(); | |
| 521 | |
| 522 let test = parse_expr(py, test); | |
| 523 let body = parse_expr(py, body); | |
| 524 let orelse = parse_expr(py, orelse); | |
| 525 | |
| 526 expr::IfExp(Box::new(test), Box::new(body), Box::new(orelse)) | |
| 81 | 527 } else if is_instance(&ast, &dict_type) { |
| 528 let keys = ast.getattr(py, "keys").unwrap(); | |
| 529 let values = ast.getattr(py, "values").unwrap(); | |
| 530 | |
| 531 let keys = parse_list(py, keys, parse_optional_expr); | |
| 532 let values = parse_list(py, values, parse_expr); | |
| 533 | |
| 534 expr::Dict(keys, values) | |
| 82 | 535 } else if is_instance(&ast, &subscript_type) { |
| 536 let value = ast.getattr(py, "value").unwrap(); | |
| 537 let slice = ast.getattr(py, "slice").unwrap(); | |
| 538 let ctx = get_ctx(py, ast); | |
| 539 | |
| 540 let value = parse_expr(py, value); | |
| 541 let slice = parse_slice(py, slice); | |
| 542 | |
| 543 expr::Subscript(Box::new(value), Box::new(slice), ctx) | |
| 83 | 544 } else if is_instance(&ast, &starred_type) { |
| 545 let value = ast.getattr(py, "value").unwrap(); | |
| 546 let ctx = get_ctx(py, ast); | |
| 547 | |
| 548 let value = parse_expr(py, value); | |
| 549 | |
| 550 expr::Starred(Box::new(value), ctx) | |
| 16 | 551 } else { |
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552 println!("expr {}", ast); |
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553 unreachable!() |
| 0 | 554 } |
| 555 } | |
| 556 | |
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557 fn parse_arg(py: Python, ast: PyObject) -> arg { |
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558 let arg = ast.getattr(py, "arg").unwrap(); |
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559 let annotation = ast.getattr(py, "annotation").unwrap(); |
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560 |
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561 let arg = get_str(py, arg); |
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562 let annotation = parse_optional_expr(py, annotation); |
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563 |
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564 arg{arg: arg, annotation: annotation} |
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565 } |
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566 |
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567 fn parse_arguments(py: Python, ast: PyObject) -> arguments { |
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568 let builtins_module = py.import("builtins").unwrap(); |
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569 let isinstance = builtins_module.get(py, "isinstance").unwrap(); |
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570 |
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571 let is_instance = |object: &PyObject, type_: &PyObject| { |
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572 return isinstance.call(py, (object, type_), None).unwrap().is_true(py).unwrap(); |
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573 }; |
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574 |
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575 let ast_module = py.import("ast").unwrap(); |
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576 let ast_type = ast_module.get(py, "AST").unwrap(); |
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577 let arguments_type = ast_module.get(py, "arguments").unwrap(); |
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578 let arg_type = ast_module.get(py, "arg").unwrap(); |
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579 |
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580 assert!(is_instance(&ast, &ast_type)); |
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581 |
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582 if is_instance(&ast, &arguments_type) { |
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583 let args = arguments{ |
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584 //args: Vec<arg>, |
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585 args: { |
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586 let args = ast.getattr(py, "args").unwrap(); |
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587 let mut arguments = vec!(); |
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588 for arg in args.iter(py).unwrap() { |
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589 let arg = arg.unwrap(); |
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590 assert!(is_instance(&arg, &arg_type)); |
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591 let arg = parse_arg(py, arg); |
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592 arguments.push(arg); |
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593 } |
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594 arguments |
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595 }, |
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596 //vararg: Option<arg>, |
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597 vararg: { |
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598 let vararg = ast.getattr(py, "vararg").unwrap(); |
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599 if vararg == py.None() { |
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600 None |
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601 } else { |
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602 let arg = parse_arg(py, vararg); |
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603 Some(arg) |
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604 } |
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605 }, |
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606 //kwonlyargs: Vec<arg>, |
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607 kwonlyargs: { |
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608 let kwonlyargs = ast.getattr(py, "kwonlyargs").unwrap(); |
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609 let mut arguments = vec!(); |
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610 for arg in kwonlyargs.iter(py).unwrap() { |
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611 let arg = arg.unwrap(); |
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612 assert!(is_instance(&arg, &arg_type)); |
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613 let arg = parse_arg(py, arg); |
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614 arguments.push(arg); |
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615 } |
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616 arguments |
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617 }, |
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618 //kw_defaults: Vec<Option<expr>>, |
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619 kw_defaults: { |
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620 let kw_defaults = ast.getattr(py, "kw_defaults").unwrap(); |
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621 let mut arguments = vec!(); |
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622 for arg in kw_defaults.iter(py).unwrap() { |
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623 let arg = arg.unwrap(); |
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624 let arg = parse_optional_expr(py, arg); |
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625 |
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626 arguments.push(arg); |
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627 } |
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628 arguments |
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629 }, |
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630 //kwarg: Option<arg>, |
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|
631 kwarg: { |
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632 let kwarg = ast.getattr(py, "kwarg").unwrap(); |
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633 if kwarg == py.None() { |
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634 None |
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635 } else { |
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636 let arg = parse_arg(py, kwarg); |
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637 Some(arg) |
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638 } |
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639 }, |
|
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640 //defaults: Vec<expr> |
|
56
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641 defaults: { |
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642 let defaults = ast.getattr(py, "defaults").unwrap(); |
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643 let mut arguments = vec!(); |
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644 for arg in defaults.iter(py).unwrap() { |
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645 let arg = arg.unwrap(); |
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646 let arg = parse_expr(py, arg); |
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647 arguments.push(arg); |
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648 } |
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649 arguments |
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650 } |
|
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651 }; |
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652 args |
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653 } else { |
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654 println!("arguments {}", ast); |
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655 panic!() |
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656 } |
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657 } |
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658 |
|
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659 fn parse_statement(py: Python, ast: PyObject) -> stmt { |
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660 //stmt::FunctionDef(expr::Name("function".to_string()), vec!(expr::Name("a".to_string()), expr::Name("b".to_string())), vec!()) |
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661 //stmt::If(expr::BinOp(BinOp::BinEq, Box::new(expr::Name("__name__".to_string())), Box::new(expr::Str("__main__".to_string()))), vec!(stmt::Expr(expr::Call(Box::new(expr::Name("function".to_string())), vec!(expr::Num(1), expr::Num(2)))))) |
| 0 | 662 |
| 663 let builtins_module = py.import("builtins").unwrap(); | |
| 664 let isinstance = builtins_module.get(py, "isinstance").unwrap(); | |
| 665 | |
| 666 let is_instance = |object: &PyObject, type_: &PyObject| { | |
| 667 return isinstance.call(py, (object, type_), None).unwrap().is_true(py).unwrap(); | |
| 668 }; | |
| 669 | |
| 670 let ast_module = py.import("ast").unwrap(); | |
| 671 let ast_type = ast_module.get(py, "AST").unwrap(); | |
|
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Add class support.
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672 let class_def_type = ast_module.get(py, "ClassDef").unwrap(); |
| 0 | 673 let function_def_type = ast_module.get(py, "FunctionDef").unwrap(); |
|
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|
674 let async_function_def_type = ast_module.get(py, "AsyncFunctionDef").unwrap(); |
| 0 | 675 let global_type = ast_module.get(py, "Global").unwrap(); |
| 51 | 676 let nonlocal_type = ast_module.get(py, "Nonlocal").unwrap(); |
| 0 | 677 let assign_type = ast_module.get(py, "Assign").unwrap(); |
|
8
94ff501bf336
Add ast.AugAssign.
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|
678 let aug_assign_type = ast_module.get(py, "AugAssign").unwrap(); |
| 0 | 679 let return_type = ast_module.get(py, "Return").unwrap(); |
| 680 let import_from_type = ast_module.get(py, "ImportFrom").unwrap(); | |
|
47
38f59b0efc2c
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Bastien Orivel <eijebong@bananium.fr>
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|
681 let import_type = ast_module.get(py, "Import").unwrap(); |
| 0 | 682 let if_type = ast_module.get(py, "If").unwrap(); |
|
6
6f2bf13f4cb5
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|
683 let while_type = ast_module.get(py, "While").unwrap(); |
|
5
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|
684 let for_type = ast_module.get(py, "For").unwrap(); |
| 71 | 685 let async_for_type = ast_module.get(py, "AsyncFor").unwrap(); |
| 0 | 686 let expr_type = ast_module.get(py, "Expr").unwrap(); |
|
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|
687 let break_type = ast_module.get(py, "Break").unwrap(); |
| 21 | 688 let delete_type = ast_module.get(py, "Delete").unwrap(); |
| 49 | 689 let pass_type = ast_module.get(py, "Pass").unwrap(); |
| 50 | 690 let continue_type = ast_module.get(py, "Continue").unwrap(); |
| 57 | 691 let assert_type = ast_module.get(py, "Assert").unwrap(); |
| 59 | 692 let with_type = ast_module.get(py, "With").unwrap(); |
| 72 | 693 let async_with_type = ast_module.get(py, "AsyncWith").unwrap(); |
| 60 | 694 let raise_type = ast_module.get(py, "Raise").unwrap(); |
| 68 | 695 let try_type = ast_module.get(py, "Try").unwrap(); |
| 0 | 696 |
| 697 assert!(is_instance(&ast, &ast_type)); | |
| 698 | |
| 699 /* | |
| 700 // TODO: implement Hash for PyObject. (trivial) | |
| 701 let map = { | |
| 702 let fields = ast.getattr(py, "_fields").unwrap(); | |
| 703 let mut map = HashMap::new(); | |
| 704 for field in fields.iter(py).unwrap() { | |
| 705 let field = field.unwrap(); | |
| 706 let value = ast.getattr(py, field).unwrap(); | |
| 707 map.insert(field, value); | |
| 708 } | |
| 709 map | |
| 710 }; | |
| 711 */ | |
| 712 | |
|
2
5fc7c2790d8c
Add class support.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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diff
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|
713 if is_instance(&ast, &class_def_type) { |
|
5fc7c2790d8c
Add class support.
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parents:
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diff
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|
714 let name = ast.getattr(py, "name").unwrap(); |
|
5fc7c2790d8c
Add class support.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
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diff
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|
715 let bases = ast.getattr(py, "bases").unwrap(); |
|
67
8ce78e2ba48c
Implement class keywords.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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65
diff
changeset
|
716 let keywords = ast.getattr(py, "keywords").unwrap(); |
|
2
5fc7c2790d8c
Add class support.
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diff
changeset
|
717 let body = ast.getattr(py, "body").unwrap(); |
|
65
ce5e27a3f277
Add ClassDef.decorator_list support.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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diff
changeset
|
718 let decorator_list = ast.getattr(py, "decorator_list").unwrap(); |
|
2
5fc7c2790d8c
Add class support.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
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diff
changeset
|
719 |
|
5fc7c2790d8c
Add class support.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
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diff
changeset
|
720 let name = get_str(py, name); |
|
20
ace12d6b9855
Replace every loop in ast_convert with parse_list.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
19
diff
changeset
|
721 let bases = parse_list(py, bases, parse_expr); |
|
67
8ce78e2ba48c
Implement class keywords.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
65
diff
changeset
|
722 let keywords = parse_list(py, keywords, parse_keyword); |
|
20
ace12d6b9855
Replace every loop in ast_convert with parse_list.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
19
diff
changeset
|
723 let body = parse_list(py, body, parse_statement); |
|
65
ce5e27a3f277
Add ClassDef.decorator_list support.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
64
diff
changeset
|
724 let decorator_list = parse_list(py, decorator_list, parse_expr); |
|
2
5fc7c2790d8c
Add class support.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
1
diff
changeset
|
725 |
|
67
8ce78e2ba48c
Implement class keywords.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
65
diff
changeset
|
726 stmt::ClassDef(name, bases, keywords, body, decorator_list) |
|
69
a73eaf42bea1
Add ast.AsyncDefFunction.
Bastien Orivel <eijebong@bananium.fr>
parents:
68
diff
changeset
|
727 } else if is_instance(&ast, &function_def_type) || is_instance(&ast, &async_function_def_type) { |
| 0 | 728 let name = ast.getattr(py, "name").unwrap(); |
| 729 let args = ast.getattr(py, "args").unwrap(); | |
| 730 let body = ast.getattr(py, "body").unwrap(); | |
|
64
53817b39f139
Add FunctionDef.decorator_list support.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
63
diff
changeset
|
731 let decorator_list = ast.getattr(py, "decorator_list").unwrap(); |
|
63
5df52b40fe54
Implement FunctionDef.returns.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
61
diff
changeset
|
732 let returns = ast.getattr(py, "returns").unwrap(); |
| 0 | 733 |
|
1
b90e49ab734b
Factorise conversion of Python str into Rust String.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
0
diff
changeset
|
734 let name = get_str(py, name); |
|
13
38b0d63697b1
Import the full AST grammar from CPython 3.5.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
9
diff
changeset
|
735 let args = parse_arguments(py, args); |
|
20
ace12d6b9855
Replace every loop in ast_convert with parse_list.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
19
diff
changeset
|
736 let body = parse_list(py, body, parse_statement); |
|
64
53817b39f139
Add FunctionDef.decorator_list support.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
63
diff
changeset
|
737 let decorator_list = parse_list(py, decorator_list, parse_expr); |
|
63
5df52b40fe54
Implement FunctionDef.returns.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
61
diff
changeset
|
738 let returns = parse_optional_expr(py, returns); |
|
13
38b0d63697b1
Import the full AST grammar from CPython 3.5.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
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diff
changeset
|
739 |
|
69
a73eaf42bea1
Add ast.AsyncDefFunction.
Bastien Orivel <eijebong@bananium.fr>
parents:
68
diff
changeset
|
740 stmt::FunctionDef(name, args, body, decorator_list, returns, is_instance(&ast, &async_function_def_type)) |
| 0 | 741 } else if is_instance(&ast, &global_type) { |
| 742 let names = ast.getattr(py, "names").unwrap(); | |
|
20
ace12d6b9855
Replace every loop in ast_convert with parse_list.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
19
diff
changeset
|
743 let names = parse_list(py, names, get_str); |
|
ace12d6b9855
Replace every loop in ast_convert with parse_list.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
19
diff
changeset
|
744 stmt::Global(names) |
| 51 | 745 } else if is_instance(&ast, &nonlocal_type) { |
| 746 let names = ast.getattr(py, "names").unwrap(); | |
| 747 let names = parse_list(py, names, get_str); | |
| 748 stmt::Nonlocal(names) | |
| 0 | 749 } else if is_instance(&ast, &if_type) { |
| 750 let test = ast.getattr(py, "test").unwrap(); | |
| 751 let body = ast.getattr(py, "body").unwrap(); | |
| 752 let orelse = ast.getattr(py, "orelse").unwrap(); | |
| 753 | |
| 754 let test = parse_expr(py, test); | |
|
20
ace12d6b9855
Replace every loop in ast_convert with parse_list.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
19
diff
changeset
|
755 let body = parse_list(py, body, parse_statement); |
|
ace12d6b9855
Replace every loop in ast_convert with parse_list.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
19
diff
changeset
|
756 let orelse = parse_list(py, orelse, parse_statement); |
| 0 | 757 |
|
20
ace12d6b9855
Replace every loop in ast_convert with parse_list.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
19
diff
changeset
|
758 stmt::If(test, body, orelse) |
|
6
6f2bf13f4cb5
Add ast.While and ast.Break.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
5
diff
changeset
|
759 } else if is_instance(&ast, &while_type) { |
|
6f2bf13f4cb5
Add ast.While and ast.Break.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
5
diff
changeset
|
760 let test = ast.getattr(py, "test").unwrap(); |
|
6f2bf13f4cb5
Add ast.While and ast.Break.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
5
diff
changeset
|
761 let body = ast.getattr(py, "body").unwrap(); |
|
6f2bf13f4cb5
Add ast.While and ast.Break.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
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diff
changeset
|
762 let orelse = ast.getattr(py, "orelse").unwrap(); |
|
6f2bf13f4cb5
Add ast.While and ast.Break.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
5
diff
changeset
|
763 |
|
6f2bf13f4cb5
Add ast.While and ast.Break.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
5
diff
changeset
|
764 let test = parse_expr(py, test); |
|
20
ace12d6b9855
Replace every loop in ast_convert with parse_list.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
19
diff
changeset
|
765 let body = parse_list(py, body, parse_statement); |
|
ace12d6b9855
Replace every loop in ast_convert with parse_list.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
19
diff
changeset
|
766 let orelse = parse_list(py, orelse, parse_statement); |
|
6
6f2bf13f4cb5
Add ast.While and ast.Break.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
5
diff
changeset
|
767 |
|
20
ace12d6b9855
Replace every loop in ast_convert with parse_list.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
19
diff
changeset
|
768 stmt::While(test, body, orelse) |
| 71 | 769 } else if is_instance(&ast, &for_type) || is_instance(&ast, &async_for_type) { |
|
5
ddf372373a77
Add ast.For, ast.UnaryOp, and Sub and Div to ast.BinOp.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
4
diff
changeset
|
770 let target = ast.getattr(py, "target").unwrap(); |
|
ddf372373a77
Add ast.For, ast.UnaryOp, and Sub and Div to ast.BinOp.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
4
diff
changeset
|
771 let iter = ast.getattr(py, "iter").unwrap(); |
|
ddf372373a77
Add ast.For, ast.UnaryOp, and Sub and Div to ast.BinOp.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
4
diff
changeset
|
772 let body = ast.getattr(py, "body").unwrap(); |
|
ddf372373a77
Add ast.For, ast.UnaryOp, and Sub and Div to ast.BinOp.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
4
diff
changeset
|
773 let orelse = ast.getattr(py, "orelse").unwrap(); |
|
ddf372373a77
Add ast.For, ast.UnaryOp, and Sub and Div to ast.BinOp.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
4
diff
changeset
|
774 |
|
ddf372373a77
Add ast.For, ast.UnaryOp, and Sub and Div to ast.BinOp.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
4
diff
changeset
|
775 let target = parse_expr(py, target); |
|
ddf372373a77
Add ast.For, ast.UnaryOp, and Sub and Div to ast.BinOp.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
4
diff
changeset
|
776 let iter = parse_expr(py, iter); |
|
20
ace12d6b9855
Replace every loop in ast_convert with parse_list.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
19
diff
changeset
|
777 let body = parse_list(py, body, parse_statement); |
|
ace12d6b9855
Replace every loop in ast_convert with parse_list.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
19
diff
changeset
|
778 let orelse = parse_list(py, orelse, parse_statement); |
|
5
ddf372373a77
Add ast.For, ast.UnaryOp, and Sub and Div to ast.BinOp.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
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779 |
| 71 | 780 stmt::For(target, iter, body, orelse, is_instance(&ast, &async_for_type)) |
| 0 | 781 } else if is_instance(&ast, &assign_type) { |
| 782 let targets = ast.getattr(py, "targets").unwrap(); | |
| 783 let value = ast.getattr(py, "value").unwrap(); | |
| 784 | |
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785 let targets = parse_list(py, targets, parse_expr); |
| 0 | 786 let value = parse_expr(py, value); |
| 787 | |
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788 stmt::Assign(targets, value) |
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789 } else if is_instance(&ast, &aug_assign_type) { |
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790 let target = ast.getattr(py, "target").unwrap(); |
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791 let op = ast.getattr(py, "op").unwrap(); |
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792 let value = ast.getattr(py, "value").unwrap(); |
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793 |
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794 let target = parse_expr(py, target); |
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795 let op = parse_operator(py, op); |
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796 let value = parse_expr(py, value); |
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797 |
|
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798 stmt::AugAssign(target, op, value) |
| 0 | 799 } else if is_instance(&ast, &import_from_type) { |
| 800 let module = ast.getattr(py, "module").unwrap(); | |
| 801 let names = ast.getattr(py, "names").unwrap(); | |
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802 let level = ast.getattr(py, "level").unwrap(); |
| 0 | 803 |
|
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804 let module = get_str(py, module); |
|
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805 let names = parse_list(py, names, parse_alias); |
| 0 | 806 |
|
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807 if level == py.None() { |
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808 stmt::ImportFrom(module, names, None) |
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809 } else { |
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810 let level = level.extract(py).unwrap(); |
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811 stmt::ImportFrom(module, names, Some(level)) |
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812 } |
|
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813 } else if is_instance(&ast, &import_type) { |
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814 let names = ast.getattr(py, "names").unwrap(); |
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815 let names = parse_list(py, names, parse_alias); |
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816 |
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817 stmt::Import(names) |
| 0 | 818 } else if is_instance(&ast, &return_type) { |
| 819 let value = ast.getattr(py, "value").unwrap(); | |
|
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820 let value = parse_optional_expr(py, value); |
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821 |
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822 stmt::Return(value) |
| 0 | 823 } else if is_instance(&ast, &expr_type) { |
| 824 let value = ast.getattr(py, "value").unwrap(); | |
| 825 let value = parse_expr(py, value); | |
|
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826 stmt::Expr(value) |
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827 } else if is_instance(&ast, &break_type) { |
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828 stmt::Break |
| 21 | 829 } else if is_instance(&ast, &delete_type) { |
| 830 let targets = ast.getattr(py, "targets").unwrap(); | |
| 831 let targets = parse_list(py, targets, parse_expr); | |
| 832 stmt::Delete(targets) | |
| 49 | 833 } else if is_instance(&ast, &pass_type) { |
| 834 stmt::Pass | |
| 50 | 835 } else if is_instance(&ast, &continue_type) { |
| 836 stmt::Continue | |
| 57 | 837 } else if is_instance(&ast, &assert_type) { |
| 838 let test = ast.getattr(py, "test").unwrap(); | |
| 839 let msg = ast.getattr(py, "msg").unwrap(); | |
| 840 | |
|
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841 let test = parse_expr(py, test); |
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842 let msg = parse_optional_expr(py, msg); |
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843 |
|
6b73843c5b4a
Add a parse_optional_expr function and use it instead of let var = if var == py.None() { None } else { Some(parse_expr(var) };
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844 stmt::Assert(test, msg) |
| 72 | 845 } else if is_instance(&ast, &with_type) || is_instance(&ast, &async_with_type) { |
| 59 | 846 let items = ast.getattr(py, "items").unwrap(); |
| 847 let body = ast.getattr(py, "body").unwrap(); | |
| 848 | |
| 849 let items = parse_list(py, items, parse_withitem); | |
| 850 let body = parse_list(py, body, parse_statement); | |
| 72 | 851 stmt::With(items, body, is_instance(&ast, &async_with_type)) |
| 60 | 852 } else if is_instance(&ast, &raise_type) { |
| 853 let exc = ast.getattr(py, "exc").unwrap(); | |
| 854 let cause = ast.getattr(py, "cause").unwrap(); | |
| 855 | |
|
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856 let exc = parse_optional_expr(py, exc); |
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857 let cause = parse_optional_expr(py, cause); |
| 60 | 858 |
|
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859 stmt::Raise(exc, cause) |
| 68 | 860 } else if is_instance(&ast, &try_type) { |
| 861 let body = ast.getattr(py, "body").unwrap(); | |
| 862 let excepthandlers = ast.getattr(py, "handlers").unwrap(); | |
| 863 let orelse = ast.getattr(py, "orelse").unwrap(); | |
| 864 let finalbody = ast.getattr(py, "finalbody").unwrap(); | |
| 865 | |
| 866 let body = parse_list(py, body, parse_statement); | |
| 867 let excepthandlers = parse_list(py, excepthandlers, parse_excepthandler); | |
| 868 let orelse = parse_list(py, orelse, parse_statement); | |
| 869 let finalbody = parse_list(py, finalbody, parse_statement); | |
| 870 | |
| 871 stmt::Try(body, excepthandlers, orelse, finalbody) | |
| 0 | 872 } else { |
|
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873 println!("stmt {}", ast); |
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874 panic!() |
| 0 | 875 } |
| 876 } | |
| 877 | |
| 878 #[allow(dead_code)] | |
| 879 pub fn convert_ast(name: String, module: &PyObject) -> Module { | |
| 880 let gil = Python::acquire_gil(); | |
| 881 let py = gil.python(); | |
| 882 | |
| 883 let builtins_module = py.import("builtins").unwrap(); | |
| 884 let isinstance = builtins_module.get(py, "isinstance").unwrap(); | |
| 885 | |
| 886 let ast_module = py.import("ast").unwrap(); | |
| 887 let module_type = ast_module.get(py, "Module").unwrap(); | |
| 888 | |
| 889 assert!(isinstance.call(py, (module, module_type), None).unwrap().is_true(py).unwrap()); | |
| 890 | |
| 891 let body = module.getattr(py, "body").unwrap(); | |
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892 let body = parse_list(py, body, parse_statement); |
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893 Module{name: name, statements: body} |
| 0 | 894 } |