Mercurial > python-compiler.rs
annotate src/ast_convert.rs @ 76:efd42fc280e8
Add ast.Set.
author | Bastien Orivel <eijebong@bananium.fr> |
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date | Mon, 13 Jun 2016 19:19:49 +0200 |
parents | 1abc8ca9f30b |
children | 7d1406181aae |
rev | line source |
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68 | 1 use python_ast::{Module, stmt, expr, expr_context, cmpop, boolop, operator, unaryop, arguments, arg, alias, comprehension, keyword, withitem, excepthandler}; |
0 | 2 |
3 use cpython::{Python, PyObject}; | |
4 use cpython::ObjectProtocol; //for call method | |
5 | |
1
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6 fn get_str(py: Python, object: PyObject) -> String { |
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7 let pystring = object.str(py).unwrap(); |
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8 let mut string = pystring.to_string(py).unwrap(); |
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9 string.to_mut().to_string() |
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10 } |
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11 |
18 | 12 fn get_ctx(py: Python, object: PyObject) -> expr_context { |
13 let builtins_module = py.import("builtins").unwrap(); | |
14 let isinstance = builtins_module.get(py, "isinstance").unwrap(); | |
15 | |
16 let is_instance = |object: &PyObject, type_: &PyObject| { | |
17 return isinstance.call(py, (object, type_), None).unwrap().is_true(py).unwrap(); | |
18 }; | |
19 | |
20 let ast_module = py.import("ast").unwrap(); | |
21 let store_type = ast_module.get(py, "Store").unwrap(); | |
22 let load_type = ast_module.get(py, "Load").unwrap(); | |
21 | 23 let del_type = ast_module.get(py, "Del").unwrap(); |
18 | 24 |
25 let ctx = object.getattr(py, "ctx").unwrap(); | |
26 if is_instance(&ctx, &store_type) { | |
27 expr_context::Store | |
28 } else if is_instance(&ctx, &load_type) { | |
29 expr_context::Load | |
21 | 30 } else if is_instance(&ctx, &del_type) { |
31 expr_context::Del | |
18 | 32 } else{ |
33 unreachable!(); | |
34 } | |
35 } | |
36 | |
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37 fn parse_list<T, F: Fn(Python, PyObject) -> T>(py: Python, list: PyObject, parse: F) -> Vec<T> { |
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38 let mut exprs = vec!(); |
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39 for item in list.iter(py).unwrap() { |
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40 let item = item.unwrap(); |
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41 let item = parse(py, item); |
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42 exprs.push(item); |
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43 } |
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44 exprs |
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45 } |
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46 |
44
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47 fn parse_alias(py: Python, ast: PyObject) -> alias { |
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48 let ast_alias = get_str(py, ast.getattr(py, "name").unwrap()); |
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49 let asname = ast.getattr(py, "asname").unwrap(); |
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50 if asname == py.None() { |
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51 alias{name: ast_alias, asname: None} |
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52 } else { |
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53 alias{name: ast_alias, asname: Some(get_str(py, asname))} |
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54 } |
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55 } |
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56 |
59 | 57 fn parse_withitem(py: Python, ast: PyObject) -> withitem { |
58 let context_expr = ast.getattr(py, "context_expr").unwrap(); | |
59 let optional_vars = ast.getattr(py, "optional_vars").unwrap(); | |
60 | |
61 let context_expr = parse_expr(py, context_expr); | |
62 | |
63 if optional_vars == py.None() { | |
64 withitem{context_expr: context_expr, optional_vars: None} | |
65 } else { | |
66 let optional_vars = parse_expr(py, optional_vars); | |
67 withitem{context_expr: context_expr, optional_vars: Some(optional_vars)} | |
68 } | |
69 } | |
70 | |
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71 fn parse_unaryop(py: Python, ast: PyObject) -> unaryop { |
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72 let builtins_module = py.import("builtins").unwrap(); |
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73 let isinstance = builtins_module.get(py, "isinstance").unwrap(); |
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74 |
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75 let is_instance = |object: &PyObject, type_: &PyObject| { |
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76 return isinstance.call(py, (object, type_), None).unwrap().is_true(py).unwrap(); |
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77 }; |
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78 |
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79 let ast_module = py.import("ast").unwrap(); |
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80 let ast_type = ast_module.get(py, "AST").unwrap(); |
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81 let invert_type = ast_module.get(py, "Invert").unwrap(); |
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82 let not_type = ast_module.get(py, "Not").unwrap(); |
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83 let uadd_type = ast_module.get(py, "UAdd").unwrap(); |
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84 let usub_type = ast_module.get(py, "USub").unwrap(); |
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85 |
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86 assert!(is_instance(&ast, &ast_type)); |
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87 |
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88 if is_instance(&ast, &invert_type) { |
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89 unaryop::Invert |
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90 } else if is_instance(&ast, ¬_type) { |
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91 unaryop::Not |
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92 } else if is_instance(&ast, &uadd_type) { |
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93 unaryop::UAdd |
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94 } else if is_instance(&ast, &usub_type) { |
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95 unaryop::USub |
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96 } else { |
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97 unreachable!() |
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98 } |
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99 } |
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100 |
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101 fn parse_boolop(py: Python, ast: PyObject) -> boolop { |
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102 let builtins_module = py.import("builtins").unwrap(); |
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103 let isinstance = builtins_module.get(py, "isinstance").unwrap(); |
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104 |
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105 let is_instance = |object: &PyObject, type_: &PyObject| { |
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106 return isinstance.call(py, (object, type_), None).unwrap().is_true(py).unwrap(); |
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107 }; |
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108 |
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109 let ast_module = py.import("ast").unwrap(); |
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110 let ast_type = ast_module.get(py, "AST").unwrap(); |
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111 let and_type = ast_module.get(py, "And").unwrap(); |
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112 let or_type = ast_module.get(py, "Or").unwrap(); |
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113 |
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114 assert!(is_instance(&ast, &ast_type)); |
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115 |
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116 if is_instance(&ast, &and_type) { |
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117 boolop::And |
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118 } else if is_instance(&ast, &or_type) { |
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119 boolop::Or |
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120 } else { |
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121 unreachable!() |
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122 } |
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123 } |
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124 |
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125 fn parse_cmpop(py: Python, ast: PyObject) -> cmpop { |
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126 let builtins_module = py.import("builtins").unwrap(); |
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127 let isinstance = builtins_module.get(py, "isinstance").unwrap(); |
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128 |
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129 let is_instance = |object: &PyObject, type_: &PyObject| { |
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130 return isinstance.call(py, (object, type_), None).unwrap().is_true(py).unwrap(); |
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131 }; |
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132 |
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133 let ast_module = py.import("ast").unwrap(); |
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134 let ast_type = ast_module.get(py, "AST").unwrap(); |
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135 let eq_type = ast_module.get(py, "Eq").unwrap(); |
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136 let noteq_type = ast_module.get(py, "NotEq").unwrap(); |
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137 let lt_type = ast_module.get(py, "Lt").unwrap(); |
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138 let lte_type = ast_module.get(py, "LtE").unwrap(); |
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139 let gt_type = ast_module.get(py, "Gt").unwrap(); |
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140 let gte_type = ast_module.get(py, "GtE").unwrap(); |
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141 let is_type = ast_module.get(py, "Is").unwrap(); |
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142 let is_not_type = ast_module.get(py, "IsNot").unwrap(); |
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143 let in_type = ast_module.get(py, "In").unwrap(); |
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144 let not_in_type = ast_module.get(py, "NotIn").unwrap(); |
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145 |
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146 assert!(is_instance(&ast, &ast_type)); |
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147 |
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148 if is_instance(&ast, &eq_type) { |
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149 cmpop::Eq |
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150 } else if is_instance(&ast, ¬eq_type) { |
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151 cmpop::NotEq |
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152 } else if is_instance(&ast, <_type) { |
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153 cmpop::Lt |
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154 } else if is_instance(&ast, <e_type) { |
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155 cmpop::LtE |
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156 } else if is_instance(&ast, >_type) { |
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157 cmpop::Gt |
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158 } else if is_instance(&ast, >e_type) { |
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159 cmpop::GtE |
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160 } else if is_instance(&ast, &is_type) { |
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161 cmpop::Is |
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162 } else if is_instance(&ast, &is_not_type) { |
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163 cmpop::IsNot |
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164 } else if is_instance(&ast, &in_type) { |
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165 cmpop::In |
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166 } else if is_instance(&ast, ¬_in_type) { |
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167 cmpop::NotIn |
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168 } else { |
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169 unreachable!() |
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170 } |
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171 } |
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172 |
14 | 173 fn parse_comprehension(py: Python, ast: PyObject) -> comprehension { |
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174 let target = ast.getattr(py, "target").unwrap(); |
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175 let iter = ast.getattr(py, "iter").unwrap(); |
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176 let ifs = ast.getattr(py, "ifs").unwrap(); |
14 | 177 |
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178 let target = parse_expr(py, target); |
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179 let iter = parse_expr(py, iter); |
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180 let ifs = parse_list(py, ifs, parse_expr); |
14 | 181 |
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182 comprehension {target: target, iter: iter, ifs: ifs} |
14 | 183 } |
184 | |
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185 fn parse_keyword(py: Python, ast: PyObject) -> keyword { |
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186 let arg = ast.getattr(py, "arg").unwrap(); |
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187 let value = ast.getattr(py, "value").unwrap(); |
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188 |
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189 let arg = if arg == py.None() { |
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190 None |
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191 } else { |
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192 let arg = get_str(py, arg); |
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193 Some(arg) |
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194 }; |
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195 let value = parse_expr(py, value); |
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196 |
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197 keyword {arg: arg, value: value} |
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198 } |
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199 |
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200 fn parse_operator(py: Python, ast: PyObject) -> operator { |
0 | 201 let builtins_module = py.import("builtins").unwrap(); |
202 let isinstance = builtins_module.get(py, "isinstance").unwrap(); | |
203 | |
204 let is_instance = |object: &PyObject, type_: &PyObject| { | |
205 return isinstance.call(py, (object, type_), None).unwrap().is_true(py).unwrap(); | |
206 }; | |
207 | |
208 let ast_module = py.import("ast").unwrap(); | |
209 let ast_type = ast_module.get(py, "AST").unwrap(); | |
210 let add_type = ast_module.get(py, "Add").unwrap(); | |
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211 let sub_type = ast_module.get(py, "Sub").unwrap(); |
0 | 212 let mult_type = ast_module.get(py, "Mult").unwrap(); |
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213 let matmult_type = ast_module.get(py, "MatMult").unwrap(); |
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214 let div_type = ast_module.get(py, "Div").unwrap(); |
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215 let mod_type = ast_module.get(py, "Mod").unwrap(); |
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216 let pow_type = ast_module.get(py, "Pow").unwrap(); |
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217 let lshift_type = ast_module.get(py, "LShift").unwrap(); |
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218 let rshift_type = ast_module.get(py, "RShift").unwrap(); |
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219 let bitor_type = ast_module.get(py, "BitOr").unwrap(); |
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220 let bitxor_type = ast_module.get(py, "BitXor").unwrap(); |
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221 let bitand_type = ast_module.get(py, "BitAnd").unwrap(); |
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222 let floordiv_type = ast_module.get(py, "FloorDiv").unwrap(); |
0 | 223 |
224 assert!(is_instance(&ast, &ast_type)); | |
225 | |
226 if is_instance(&ast, &add_type) { | |
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227 operator::Add |
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228 } else if is_instance(&ast, &sub_type) { |
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229 operator::Sub |
0 | 230 } else if is_instance(&ast, &mult_type) { |
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231 operator::Mult |
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232 } else if is_instance(&ast, &matmult_type) { |
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233 operator::MatMult |
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234 } else if is_instance(&ast, &div_type) { |
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235 operator::Div |
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236 } else if is_instance(&ast, &mod_type) { |
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237 operator::Mod |
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238 } else if is_instance(&ast, &pow_type) { |
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239 operator::Pow |
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240 } else if is_instance(&ast, &lshift_type) { |
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241 operator::LShift |
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242 } else if is_instance(&ast, &rshift_type) { |
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243 operator::RShift |
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244 } else if is_instance(&ast, &bitor_type) { |
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245 operator::BitOr |
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246 } else if is_instance(&ast, &bitxor_type) { |
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247 operator::BitXor |
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248 } else if is_instance(&ast, &bitand_type) { |
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249 operator::BitAnd |
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250 } else if is_instance(&ast, &floordiv_type) { |
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251 operator::FloorDiv |
0 | 252 } else { |
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253 println!("operator {}", ast); |
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254 panic!() |
0 | 255 } |
256 } | |
257 | |
68 | 258 fn parse_excepthandler(py: Python, ast: PyObject) -> excepthandler { |
259 let type_ = ast.getattr(py, "type").unwrap(); | |
260 let name = ast.getattr(py, "name").unwrap(); | |
261 let body = ast.getattr(py, "body").unwrap(); | |
262 | |
263 let type_ = parse_optional_expr(py, type_); | |
264 let name = if name == py.None() { None } else { Some(get_str(py, name)) }; | |
265 let body = parse_list(py, body, parse_statement); | |
266 | |
267 excepthandler{type_: type_, name: name, body: body} | |
268 } | |
269 | |
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270 fn parse_optional_expr(py: Python, ast: PyObject) -> Option<expr> { |
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271 if ast == py.None() { |
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272 None |
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273 } else { |
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274 let ast = parse_expr(py, ast); |
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275 Some(ast) |
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276 } |
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277 } |
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278 |
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279 fn parse_expr(py: Python, ast: PyObject) -> expr { |
0 | 280 let builtins_module = py.import("builtins").unwrap(); |
281 let isinstance = builtins_module.get(py, "isinstance").unwrap(); | |
282 | |
283 let is_instance = |object: &PyObject, type_: &PyObject| { | |
284 return isinstance.call(py, (object, type_), None).unwrap().is_true(py).unwrap(); | |
285 }; | |
286 | |
287 let ast_module = py.import("ast").unwrap(); | |
288 let ast_type = ast_module.get(py, "AST").unwrap(); | |
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289 let unary_op_type = ast_module.get(py, "UnaryOp").unwrap(); |
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290 let bool_op_type = ast_module.get(py, "BoolOp").unwrap(); |
0 | 291 let bin_op_type = ast_module.get(py, "BinOp").unwrap(); |
292 let name_constant_type = ast_module.get(py, "NameConstant").unwrap(); | |
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293 let attribute_type = ast_module.get(py, "Attribute").unwrap(); |
0 | 294 let name_type = ast_module.get(py, "Name").unwrap(); |
295 let num_type = ast_module.get(py, "Num").unwrap(); | |
296 let str_type = ast_module.get(py, "Str").unwrap(); | |
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297 let list_type = ast_module.get(py, "List").unwrap(); |
0 | 298 let compare_type = ast_module.get(py, "Compare").unwrap(); |
299 let call_type = ast_module.get(py, "Call").unwrap(); | |
14 | 300 let listcomp_type = ast_module.get(py, "ListComp").unwrap(); |
16 | 301 let dictcomp_type = ast_module.get(py, "DictComp").unwrap(); |
17 | 302 let tuple_type = ast_module.get(py, "Tuple").unwrap(); |
52 | 303 let ellipsis_type = ast_module.get(py, "Ellipsis").unwrap(); |
73 | 304 let await_type = ast_module.get(py, "Await").unwrap(); |
74 | 305 let yield_type = ast_module.get(py, "Yield").unwrap(); |
75 | 306 let yield_from_type = ast_module.get(py, "YieldFrom").unwrap(); |
76 | 307 let set_type = ast_module.get(py, "Set").unwrap(); |
0 | 308 |
309 assert!(is_instance(&ast, &ast_type)); | |
310 | |
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311 if is_instance(&ast, &attribute_type) { |
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312 let value = ast.getattr(py, "value").unwrap(); |
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313 let attr = ast.getattr(py, "attr").unwrap(); |
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314 |
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315 let value = parse_expr(py, value); |
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316 let attr = get_str(py, attr); |
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317 |
18 | 318 expr::Attribute(Box::new(value), attr, get_ctx(py, ast)) |
0 | 319 } else if is_instance(&ast, &name_type) { |
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320 let id = ast.getattr(py, "id").unwrap(); |
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321 let id = get_str(py, id); |
18 | 322 expr::Name(id, get_ctx(py, ast)) |
0 | 323 } else if is_instance(&ast, &name_constant_type) { |
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324 let value = ast.getattr(py, "value").unwrap(); |
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325 let value = get_str(py, value); |
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326 expr::NameConstant(value) |
0 | 327 } else if is_instance(&ast, &num_type) { |
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328 let n = ast.getattr(py, "n").unwrap(); |
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329 let n = get_str(py, n); |
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330 expr::Num(n) |
0 | 331 } else if is_instance(&ast, &str_type) { |
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332 let s = ast.getattr(py, "s").unwrap(); |
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333 let s = get_str(py, s); |
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334 expr::Str(s) |
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335 } else if is_instance(&ast, &list_type) { |
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336 let elts = ast.getattr(py, "elts").unwrap(); |
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337 let elements = parse_list(py, elts, parse_expr); |
18 | 338 expr::List(elements, get_ctx(py, ast)) |
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339 } else if is_instance(&ast, &unary_op_type) { |
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340 let op = ast.getattr(py, "op").unwrap(); |
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341 let operand = ast.getattr(py, "operand").unwrap(); |
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342 |
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343 let op = parse_unaryop(py, op); |
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344 let operand = parse_expr(py, operand); |
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345 |
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346 expr::UnaryOp(op, Box::new(operand)) |
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347 } else if is_instance(&ast, &bool_op_type) { |
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348 let op = ast.getattr(py, "op").unwrap(); |
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349 let values = ast.getattr(py, "values").unwrap(); |
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350 |
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351 let op = parse_boolop(py, op); |
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352 let values = parse_list(py, values, parse_expr); |
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353 |
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354 expr::BoolOp(op, values) |
0 | 355 } else if is_instance(&ast, &bin_op_type) { |
356 let left = ast.getattr(py, "left").unwrap(); | |
357 let op = ast.getattr(py, "op").unwrap(); | |
358 let right = ast.getattr(py, "right").unwrap(); | |
359 | |
360 let left = parse_expr(py, left); | |
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361 let op = parse_operator(py, op); |
0 | 362 let right = parse_expr(py, right); |
363 | |
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364 expr::BinOp(Box::new(left), op, Box::new(right)) |
0 | 365 } else if is_instance(&ast, &call_type) { |
366 let func = ast.getattr(py, "func").unwrap(); | |
367 let args = ast.getattr(py, "args").unwrap(); | |
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368 let keywords = ast.getattr(py, "keywords").unwrap(); |
0 | 369 |
370 let func = parse_expr(py, func); | |
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371 let args = parse_list(py, args, parse_expr); |
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372 let keywords = parse_list(py, keywords, parse_keyword); |
0 | 373 |
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374 expr::Call(Box::new(func), args, keywords) |
0 | 375 } else if is_instance(&ast, &compare_type) { |
376 let left = ast.getattr(py, "left").unwrap(); | |
377 let ops = ast.getattr(py, "ops").unwrap(); | |
378 let comparators = ast.getattr(py, "comparators").unwrap(); | |
379 | |
380 let left = parse_expr(py, left); | |
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381 let ops = parse_list(py, ops, parse_cmpop); |
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382 let comparators = parse_list(py, comparators, parse_expr); |
0 | 383 |
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384 expr::Compare(Box::new(left), ops, comparators) |
14 | 385 } else if is_instance(&ast, &listcomp_type) { |
386 let elt = ast.getattr(py, "elt").unwrap(); | |
387 let generators = ast.getattr(py, "generators").unwrap(); | |
388 | |
389 let elt = parse_expr(py, elt); | |
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390 let generators = parse_list(py, generators, parse_comprehension); |
14 | 391 |
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392 expr::ListComp(Box::new(elt), generators) |
16 | 393 } else if is_instance(&ast, &dictcomp_type) { |
394 let key = ast.getattr(py, "key").unwrap(); | |
395 let value = ast.getattr(py, "value").unwrap(); | |
396 let generators = ast.getattr(py, "generators").unwrap(); | |
397 | |
398 let key = parse_expr(py, key); | |
399 let value = parse_expr(py, value); | |
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400 let generators = parse_list(py, generators, parse_comprehension); |
16 | 401 |
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402 expr::DictComp(Box::new(key), Box::new(value), generators) |
17 | 403 } else if is_instance(&ast, &tuple_type) { |
404 let elts = ast.getattr(py, "elts").unwrap(); | |
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405 let elts = parse_list(py, elts, parse_expr); |
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406 expr::Tuple(elts, get_ctx(py, ast)) |
52 | 407 } else if is_instance(&ast, &ellipsis_type) { |
408 expr::Ellipsis | |
73 | 409 } else if is_instance(&ast, &await_type) { |
410 let value = ast.getattr(py, "value").unwrap(); | |
411 let value = parse_expr(py, value); | |
412 | |
413 expr::Await(Box::new(value)) | |
74 | 414 } else if is_instance(&ast, &yield_type) { |
415 let value = ast.getattr(py, "value").unwrap(); | |
416 let value = parse_optional_expr(py, value); | |
417 | |
418 expr::Yield(Box::new(value)) | |
75 | 419 } else if is_instance(&ast, &yield_from_type) { |
420 let value = ast.getattr(py, "value").unwrap(); | |
421 let value = parse_expr(py, value); | |
422 | |
423 expr::YieldFrom(Box::new(value)) | |
76 | 424 } else if is_instance(&ast, &set_type) { |
425 let elts = ast.getattr(py, "elts").unwrap(); | |
426 let elements = parse_list(py, elts, parse_expr); | |
427 | |
428 expr::Set(elements) | |
16 | 429 } else { |
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430 println!("expr {}", ast); |
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431 unreachable!() |
0 | 432 } |
433 } | |
434 | |
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435 fn parse_arg(py: Python, ast: PyObject) -> arg { |
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436 let arg = ast.getattr(py, "arg").unwrap(); |
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437 let annotation = ast.getattr(py, "annotation").unwrap(); |
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438 |
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439 let arg = get_str(py, arg); |
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440 let annotation = parse_optional_expr(py, annotation); |
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441 |
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442 arg{arg: arg, annotation: annotation} |
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443 } |
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444 |
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445 fn parse_arguments(py: Python, ast: PyObject) -> arguments { |
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446 let builtins_module = py.import("builtins").unwrap(); |
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447 let isinstance = builtins_module.get(py, "isinstance").unwrap(); |
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448 |
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449 let is_instance = |object: &PyObject, type_: &PyObject| { |
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450 return isinstance.call(py, (object, type_), None).unwrap().is_true(py).unwrap(); |
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451 }; |
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452 |
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453 let ast_module = py.import("ast").unwrap(); |
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454 let ast_type = ast_module.get(py, "AST").unwrap(); |
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455 let arguments_type = ast_module.get(py, "arguments").unwrap(); |
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456 let arg_type = ast_module.get(py, "arg").unwrap(); |
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457 |
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458 assert!(is_instance(&ast, &ast_type)); |
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459 |
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460 if is_instance(&ast, &arguments_type) { |
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461 let args = arguments{ |
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462 //args: Vec<arg>, |
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463 args: { |
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464 let args = ast.getattr(py, "args").unwrap(); |
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465 let mut arguments = vec!(); |
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466 for arg in args.iter(py).unwrap() { |
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467 let arg = arg.unwrap(); |
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468 assert!(is_instance(&arg, &arg_type)); |
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469 let arg = parse_arg(py, arg); |
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470 arguments.push(arg); |
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471 } |
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472 arguments |
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473 }, |
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474 //vararg: Option<arg>, |
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475 vararg: { |
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476 let vararg = ast.getattr(py, "vararg").unwrap(); |
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477 if vararg == py.None() { |
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478 None |
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479 } else { |
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480 let arg = parse_arg(py, vararg); |
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481 Some(arg) |
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482 } |
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483 }, |
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484 //kwonlyargs: Vec<arg>, |
56
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485 kwonlyargs: { |
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486 let kwonlyargs = ast.getattr(py, "kwonlyargs").unwrap(); |
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487 let mut arguments = vec!(); |
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488 for arg in kwonlyargs.iter(py).unwrap() { |
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489 let arg = arg.unwrap(); |
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490 assert!(is_instance(&arg, &arg_type)); |
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491 let arg = parse_arg(py, arg); |
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492 arguments.push(arg); |
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493 } |
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494 arguments |
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495 }, |
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496 //kw_defaults: Vec<Option<expr>>, |
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497 kw_defaults: { |
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498 let kw_defaults = ast.getattr(py, "kw_defaults").unwrap(); |
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499 let mut arguments = vec!(); |
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500 for arg in kw_defaults.iter(py).unwrap() { |
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501 let arg = arg.unwrap(); |
61
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502 let arg = parse_optional_expr(py, arg); |
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503 |
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504 arguments.push(arg); |
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505 } |
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506 arguments |
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507 }, |
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508 //kwarg: Option<arg>, |
56
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509 kwarg: { |
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510 let kwarg = ast.getattr(py, "kwarg").unwrap(); |
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511 if kwarg == py.None() { |
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512 None |
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513 } else { |
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514 let arg = parse_arg(py, kwarg); |
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515 Some(arg) |
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516 } |
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517 }, |
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518 //defaults: Vec<expr> |
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519 defaults: { |
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520 let defaults = ast.getattr(py, "defaults").unwrap(); |
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521 let mut arguments = vec!(); |
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522 for arg in defaults.iter(py).unwrap() { |
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523 let arg = arg.unwrap(); |
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524 let arg = parse_expr(py, arg); |
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525 arguments.push(arg); |
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526 } |
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527 arguments |
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528 } |
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529 }; |
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530 args |
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531 } else { |
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532 println!("arguments {}", ast); |
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533 panic!() |
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534 } |
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535 } |
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536 |
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537 fn parse_statement(py: Python, ast: PyObject) -> stmt { |
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538 //stmt::FunctionDef(expr::Name("function".to_string()), vec!(expr::Name("a".to_string()), expr::Name("b".to_string())), vec!()) |
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539 //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 | 540 |
541 let builtins_module = py.import("builtins").unwrap(); | |
542 let isinstance = builtins_module.get(py, "isinstance").unwrap(); | |
543 | |
544 let is_instance = |object: &PyObject, type_: &PyObject| { | |
545 return isinstance.call(py, (object, type_), None).unwrap().is_true(py).unwrap(); | |
546 }; | |
547 | |
548 let ast_module = py.import("ast").unwrap(); | |
549 let ast_type = ast_module.get(py, "AST").unwrap(); | |
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550 let class_def_type = ast_module.get(py, "ClassDef").unwrap(); |
0 | 551 let function_def_type = ast_module.get(py, "FunctionDef").unwrap(); |
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Add ast.AsyncDefFunction.
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552 let async_function_def_type = ast_module.get(py, "AsyncFunctionDef").unwrap(); |
0 | 553 let global_type = ast_module.get(py, "Global").unwrap(); |
51 | 554 let nonlocal_type = ast_module.get(py, "Nonlocal").unwrap(); |
0 | 555 let assign_type = ast_module.get(py, "Assign").unwrap(); |
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94ff501bf336
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556 let aug_assign_type = ast_module.get(py, "AugAssign").unwrap(); |
0 | 557 let return_type = ast_module.get(py, "Return").unwrap(); |
558 let import_from_type = ast_module.get(py, "ImportFrom").unwrap(); | |
47
38f59b0efc2c
Handle Import and add a test for it.
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559 let import_type = ast_module.get(py, "Import").unwrap(); |
0 | 560 let if_type = ast_module.get(py, "If").unwrap(); |
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561 let while_type = ast_module.get(py, "While").unwrap(); |
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ddf372373a77
Add ast.For, ast.UnaryOp, and Sub and Div to ast.BinOp.
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562 let for_type = ast_module.get(py, "For").unwrap(); |
71 | 563 let async_for_type = ast_module.get(py, "AsyncFor").unwrap(); |
0 | 564 let expr_type = ast_module.get(py, "Expr").unwrap(); |
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565 let break_type = ast_module.get(py, "Break").unwrap(); |
21 | 566 let delete_type = ast_module.get(py, "Delete").unwrap(); |
49 | 567 let pass_type = ast_module.get(py, "Pass").unwrap(); |
50 | 568 let continue_type = ast_module.get(py, "Continue").unwrap(); |
57 | 569 let assert_type = ast_module.get(py, "Assert").unwrap(); |
59 | 570 let with_type = ast_module.get(py, "With").unwrap(); |
72 | 571 let async_with_type = ast_module.get(py, "AsyncWith").unwrap(); |
60 | 572 let raise_type = ast_module.get(py, "Raise").unwrap(); |
68 | 573 let try_type = ast_module.get(py, "Try").unwrap(); |
0 | 574 |
575 assert!(is_instance(&ast, &ast_type)); | |
576 | |
577 /* | |
578 // TODO: implement Hash for PyObject. (trivial) | |
579 let map = { | |
580 let fields = ast.getattr(py, "_fields").unwrap(); | |
581 let mut map = HashMap::new(); | |
582 for field in fields.iter(py).unwrap() { | |
583 let field = field.unwrap(); | |
584 let value = ast.getattr(py, field).unwrap(); | |
585 map.insert(field, value); | |
586 } | |
587 map | |
588 }; | |
589 */ | |
590 | |
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591 if is_instance(&ast, &class_def_type) { |
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592 let name = ast.getattr(py, "name").unwrap(); |
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593 let bases = ast.getattr(py, "bases").unwrap(); |
67
8ce78e2ba48c
Implement class keywords.
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594 let keywords = ast.getattr(py, "keywords").unwrap(); |
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595 let body = ast.getattr(py, "body").unwrap(); |
65
ce5e27a3f277
Add ClassDef.decorator_list support.
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596 let decorator_list = ast.getattr(py, "decorator_list").unwrap(); |
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597 |
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598 let name = get_str(py, name); |
20
ace12d6b9855
Replace every loop in ast_convert with parse_list.
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599 let bases = parse_list(py, bases, parse_expr); |
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600 let keywords = parse_list(py, keywords, parse_keyword); |
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601 let body = parse_list(py, body, parse_statement); |
65
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Add ClassDef.decorator_list support.
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602 let decorator_list = parse_list(py, decorator_list, parse_expr); |
2
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Add class support.
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603 |
67
8ce78e2ba48c
Implement class keywords.
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604 stmt::ClassDef(name, bases, keywords, body, decorator_list) |
69
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605 } else if is_instance(&ast, &function_def_type) || is_instance(&ast, &async_function_def_type) { |
0 | 606 let name = ast.getattr(py, "name").unwrap(); |
607 let args = ast.getattr(py, "args").unwrap(); | |
608 let body = ast.getattr(py, "body").unwrap(); | |
64
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609 let decorator_list = ast.getattr(py, "decorator_list").unwrap(); |
63
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Implement FunctionDef.returns.
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610 let returns = ast.getattr(py, "returns").unwrap(); |
0 | 611 |
1
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Factorise conversion of Python str into Rust String.
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612 let name = get_str(py, name); |
13
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613 let args = parse_arguments(py, args); |
20
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614 let body = parse_list(py, body, parse_statement); |
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615 let decorator_list = parse_list(py, decorator_list, parse_expr); |
63
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616 let returns = parse_optional_expr(py, returns); |
13
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617 |
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618 stmt::FunctionDef(name, args, body, decorator_list, returns, is_instance(&ast, &async_function_def_type)) |
0 | 619 } else if is_instance(&ast, &global_type) { |
620 let names = ast.getattr(py, "names").unwrap(); | |
20
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621 let names = parse_list(py, names, get_str); |
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622 stmt::Global(names) |
51 | 623 } else if is_instance(&ast, &nonlocal_type) { |
624 let names = ast.getattr(py, "names").unwrap(); | |
625 let names = parse_list(py, names, get_str); | |
626 stmt::Nonlocal(names) | |
0 | 627 } else if is_instance(&ast, &if_type) { |
628 let test = ast.getattr(py, "test").unwrap(); | |
629 let body = ast.getattr(py, "body").unwrap(); | |
630 let orelse = ast.getattr(py, "orelse").unwrap(); | |
631 | |
632 let test = parse_expr(py, test); | |
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633 let body = parse_list(py, body, parse_statement); |
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634 let orelse = parse_list(py, orelse, parse_statement); |
0 | 635 |
20
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636 stmt::If(test, body, orelse) |
6
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637 } else if is_instance(&ast, &while_type) { |
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638 let test = ast.getattr(py, "test").unwrap(); |
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639 let body = ast.getattr(py, "body").unwrap(); |
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640 let orelse = ast.getattr(py, "orelse").unwrap(); |
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641 |
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642 let test = parse_expr(py, test); |
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643 let body = parse_list(py, body, parse_statement); |
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644 let orelse = parse_list(py, orelse, parse_statement); |
6
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645 |
20
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646 stmt::While(test, body, orelse) |
71 | 647 } else if is_instance(&ast, &for_type) || is_instance(&ast, &async_for_type) { |
5
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648 let target = ast.getattr(py, "target").unwrap(); |
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649 let iter = ast.getattr(py, "iter").unwrap(); |
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650 let body = ast.getattr(py, "body").unwrap(); |
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651 let orelse = ast.getattr(py, "orelse").unwrap(); |
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diff
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652 |
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653 let target = parse_expr(py, target); |
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654 let iter = parse_expr(py, iter); |
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655 let body = parse_list(py, body, parse_statement); |
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656 let orelse = parse_list(py, orelse, parse_statement); |
5
ddf372373a77
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657 |
71 | 658 stmt::For(target, iter, body, orelse, is_instance(&ast, &async_for_type)) |
0 | 659 } else if is_instance(&ast, &assign_type) { |
660 let targets = ast.getattr(py, "targets").unwrap(); | |
661 let value = ast.getattr(py, "value").unwrap(); | |
662 | |
20
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663 let targets = parse_list(py, targets, parse_expr); |
0 | 664 let value = parse_expr(py, value); |
665 | |
20
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666 stmt::Assign(targets, value) |
8
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667 } else if is_instance(&ast, &aug_assign_type) { |
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668 let target = ast.getattr(py, "target").unwrap(); |
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669 let op = ast.getattr(py, "op").unwrap(); |
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670 let value = ast.getattr(py, "value").unwrap(); |
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671 |
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672 let target = parse_expr(py, target); |
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673 let op = parse_operator(py, op); |
8
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674 let value = parse_expr(py, value); |
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675 |
13
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676 stmt::AugAssign(target, op, value) |
0 | 677 } else if is_instance(&ast, &import_from_type) { |
678 let module = ast.getattr(py, "module").unwrap(); | |
679 let names = ast.getattr(py, "names").unwrap(); | |
13
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|
680 let level = ast.getattr(py, "level").unwrap(); |
0 | 681 |
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parents:
0
diff
changeset
|
682 let module = get_str(py, module); |
44
5f1d285471af
Finish ImportFrom conversion and add a test for it.
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683 let names = parse_list(py, names, parse_alias); |
0 | 684 |
48
039f85b187f2
Also handle relative imports.
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|
685 if level == py.None() { |
039f85b187f2
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|
686 stmt::ImportFrom(module, names, None) |
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|
687 } else { |
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diff
changeset
|
688 let level = level.extract(py).unwrap(); |
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|
689 stmt::ImportFrom(module, names, Some(level)) |
039f85b187f2
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Bastien Orivel <eijebong@bananium.fr>
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diff
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690 } |
47
38f59b0efc2c
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691 } else if is_instance(&ast, &import_type) { |
38f59b0efc2c
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692 let names = ast.getattr(py, "names").unwrap(); |
38f59b0efc2c
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diff
changeset
|
693 let names = parse_list(py, names, parse_alias); |
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diff
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|
694 |
38f59b0efc2c
Handle Import and add a test for it.
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44
diff
changeset
|
695 stmt::Import(names) |
0 | 696 } else if is_instance(&ast, &return_type) { |
697 let value = ast.getattr(py, "value").unwrap(); | |
61
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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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698 let value = parse_optional_expr(py, value); |
6b73843c5b4a
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|
699 |
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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|
700 stmt::Return(value) |
0 | 701 } else if is_instance(&ast, &expr_type) { |
702 let value = ast.getattr(py, "value").unwrap(); | |
703 let value = parse_expr(py, value); | |
13
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|
704 stmt::Expr(value) |
6
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705 } else if is_instance(&ast, &break_type) { |
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|
706 stmt::Break |
21 | 707 } else if is_instance(&ast, &delete_type) { |
708 let targets = ast.getattr(py, "targets").unwrap(); | |
709 let targets = parse_list(py, targets, parse_expr); | |
710 stmt::Delete(targets) | |
49 | 711 } else if is_instance(&ast, &pass_type) { |
712 stmt::Pass | |
50 | 713 } else if is_instance(&ast, &continue_type) { |
714 stmt::Continue | |
57 | 715 } else if is_instance(&ast, &assert_type) { |
716 let test = ast.getattr(py, "test").unwrap(); | |
717 let msg = ast.getattr(py, "msg").unwrap(); | |
718 | |
61
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Add a parse_optional_expr function and use it instead of let var = if var == py.None() { None } else { Some(parse_expr(var) };
Bastien Orivel <eijebong@bananium.fr>
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60
diff
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|
719 let test = parse_expr(py, test); |
6b73843c5b4a
Add a parse_optional_expr function and use it instead of let var = if var == py.None() { None } else { Some(parse_expr(var) };
Bastien Orivel <eijebong@bananium.fr>
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|
720 let msg = parse_optional_expr(py, msg); |
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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parents:
60
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721 |
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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|
722 stmt::Assert(test, msg) |
72 | 723 } else if is_instance(&ast, &with_type) || is_instance(&ast, &async_with_type) { |
59 | 724 let items = ast.getattr(py, "items").unwrap(); |
725 let body = ast.getattr(py, "body").unwrap(); | |
726 | |
727 let items = parse_list(py, items, parse_withitem); | |
728 let body = parse_list(py, body, parse_statement); | |
72 | 729 stmt::With(items, body, is_instance(&ast, &async_with_type)) |
60 | 730 } else if is_instance(&ast, &raise_type) { |
731 let exc = ast.getattr(py, "exc").unwrap(); | |
732 let cause = ast.getattr(py, "cause").unwrap(); | |
733 | |
61
6b73843c5b4a
Add a parse_optional_expr function and use it instead of let var = if var == py.None() { None } else { Some(parse_expr(var) };
Bastien Orivel <eijebong@bananium.fr>
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diff
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|
734 let exc = parse_optional_expr(py, exc); |
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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|
735 let cause = parse_optional_expr(py, cause); |
60 | 736 |
61
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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|
737 stmt::Raise(exc, cause) |
68 | 738 } else if is_instance(&ast, &try_type) { |
739 let body = ast.getattr(py, "body").unwrap(); | |
740 let excepthandlers = ast.getattr(py, "handlers").unwrap(); | |
741 let orelse = ast.getattr(py, "orelse").unwrap(); | |
742 let finalbody = ast.getattr(py, "finalbody").unwrap(); | |
743 | |
744 let body = parse_list(py, body, parse_statement); | |
745 let excepthandlers = parse_list(py, excepthandlers, parse_excepthandler); | |
746 let orelse = parse_list(py, orelse, parse_statement); | |
747 let finalbody = parse_list(py, finalbody, parse_statement); | |
748 | |
749 stmt::Try(body, excepthandlers, orelse, finalbody) | |
0 | 750 } else { |
13
38b0d63697b1
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|
751 println!("stmt {}", ast); |
38b0d63697b1
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|
752 panic!() |
0 | 753 } |
754 } | |
755 | |
756 #[allow(dead_code)] | |
757 pub fn convert_ast(name: String, module: &PyObject) -> Module { | |
758 let gil = Python::acquire_gil(); | |
759 let py = gil.python(); | |
760 | |
761 let builtins_module = py.import("builtins").unwrap(); | |
762 let isinstance = builtins_module.get(py, "isinstance").unwrap(); | |
763 | |
764 let ast_module = py.import("ast").unwrap(); | |
765 let module_type = ast_module.get(py, "Module").unwrap(); | |
766 | |
767 assert!(isinstance.call(py, (module, module_type), None).unwrap().is_true(py).unwrap()); | |
768 | |
769 let body = module.getattr(py, "body").unwrap(); | |
20
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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19
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|
770 let body = parse_list(py, body, parse_statement); |
ace12d6b9855
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|
771 Module{name: name, statements: body} |
0 | 772 } |