Mercurial > python-compiler.rs
annotate src/ast_convert.rs @ 81:dc82a0d8f144
Add ast.Dict.
| author | Bastien Orivel <eijebong@bananium.fr> |
|---|---|
| date | Mon, 13 Jun 2016 20:45:19 +0200 |
| parents | c6d3f0dabbba |
| children | 2d906d1cb940 |
| rev | line source |
|---|---|
| 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 | |
|
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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 |
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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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61
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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(); |
| 77 | 308 let setcomp_type = ast_module.get(py, "SetComp").unwrap(); |
| 78 | 309 let generatorexp_type = ast_module.get(py, "GeneratorExp").unwrap(); |
| 79 | 310 let lambda_type = ast_module.get(py, "Lambda").unwrap(); |
| 80 | 311 let ifexp_type = ast_module.get(py, "IfExp").unwrap(); |
| 81 | 312 let dict_type = ast_module.get(py, "Dict").unwrap(); |
| 0 | 313 |
| 314 assert!(is_instance(&ast, &ast_type)); | |
| 315 | |
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316 if is_instance(&ast, &attribute_type) { |
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317 let value = ast.getattr(py, "value").unwrap(); |
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318 let attr = ast.getattr(py, "attr").unwrap(); |
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319 |
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320 let value = parse_expr(py, value); |
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321 let attr = get_str(py, attr); |
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322 |
| 18 | 323 expr::Attribute(Box::new(value), attr, get_ctx(py, ast)) |
| 0 | 324 } else if is_instance(&ast, &name_type) { |
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325 let id = ast.getattr(py, "id").unwrap(); |
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326 let id = get_str(py, id); |
| 18 | 327 expr::Name(id, get_ctx(py, ast)) |
| 0 | 328 } else if is_instance(&ast, &name_constant_type) { |
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329 let value = ast.getattr(py, "value").unwrap(); |
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330 let value = get_str(py, value); |
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331 expr::NameConstant(value) |
| 0 | 332 } else if is_instance(&ast, &num_type) { |
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333 let n = ast.getattr(py, "n").unwrap(); |
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334 let n = get_str(py, n); |
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335 expr::Num(n) |
| 0 | 336 } else if is_instance(&ast, &str_type) { |
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337 let s = ast.getattr(py, "s").unwrap(); |
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338 let s = get_str(py, s); |
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339 expr::Str(s) |
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340 } else if is_instance(&ast, &list_type) { |
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341 let elts = ast.getattr(py, "elts").unwrap(); |
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342 let elements = parse_list(py, elts, parse_expr); |
| 18 | 343 expr::List(elements, get_ctx(py, ast)) |
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344 } else if is_instance(&ast, &unary_op_type) { |
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345 let op = ast.getattr(py, "op").unwrap(); |
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346 let operand = ast.getattr(py, "operand").unwrap(); |
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347 |
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348 let op = parse_unaryop(py, op); |
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349 let operand = parse_expr(py, operand); |
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350 |
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351 expr::UnaryOp(op, Box::new(operand)) |
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352 } else if is_instance(&ast, &bool_op_type) { |
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353 let op = ast.getattr(py, "op").unwrap(); |
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354 let values = ast.getattr(py, "values").unwrap(); |
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355 |
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356 let op = parse_boolop(py, op); |
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357 let values = parse_list(py, values, parse_expr); |
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358 |
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359 expr::BoolOp(op, values) |
| 0 | 360 } else if is_instance(&ast, &bin_op_type) { |
| 361 let left = ast.getattr(py, "left").unwrap(); | |
| 362 let op = ast.getattr(py, "op").unwrap(); | |
| 363 let right = ast.getattr(py, "right").unwrap(); | |
| 364 | |
| 365 let left = parse_expr(py, left); | |
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366 let op = parse_operator(py, op); |
| 0 | 367 let right = parse_expr(py, right); |
| 368 | |
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369 expr::BinOp(Box::new(left), op, Box::new(right)) |
| 0 | 370 } else if is_instance(&ast, &call_type) { |
| 371 let func = ast.getattr(py, "func").unwrap(); | |
| 372 let args = ast.getattr(py, "args").unwrap(); | |
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373 let keywords = ast.getattr(py, "keywords").unwrap(); |
| 0 | 374 |
| 375 let func = parse_expr(py, func); | |
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376 let args = parse_list(py, args, parse_expr); |
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377 let keywords = parse_list(py, keywords, parse_keyword); |
| 0 | 378 |
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379 expr::Call(Box::new(func), args, keywords) |
| 0 | 380 } else if is_instance(&ast, &compare_type) { |
| 381 let left = ast.getattr(py, "left").unwrap(); | |
| 382 let ops = ast.getattr(py, "ops").unwrap(); | |
| 383 let comparators = ast.getattr(py, "comparators").unwrap(); | |
| 384 | |
| 385 let left = parse_expr(py, left); | |
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386 let ops = parse_list(py, ops, parse_cmpop); |
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387 let comparators = parse_list(py, comparators, parse_expr); |
| 0 | 388 |
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389 expr::Compare(Box::new(left), ops, comparators) |
| 14 | 390 } else if is_instance(&ast, &listcomp_type) { |
| 391 let elt = ast.getattr(py, "elt").unwrap(); | |
| 392 let generators = ast.getattr(py, "generators").unwrap(); | |
| 393 | |
| 394 let elt = parse_expr(py, elt); | |
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395 let generators = parse_list(py, generators, parse_comprehension); |
| 14 | 396 |
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397 expr::ListComp(Box::new(elt), generators) |
| 16 | 398 } else if is_instance(&ast, &dictcomp_type) { |
| 399 let key = ast.getattr(py, "key").unwrap(); | |
| 400 let value = ast.getattr(py, "value").unwrap(); | |
| 401 let generators = ast.getattr(py, "generators").unwrap(); | |
| 402 | |
| 403 let key = parse_expr(py, key); | |
| 404 let value = parse_expr(py, value); | |
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405 let generators = parse_list(py, generators, parse_comprehension); |
| 16 | 406 |
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407 expr::DictComp(Box::new(key), Box::new(value), generators) |
| 17 | 408 } else if is_instance(&ast, &tuple_type) { |
| 409 let elts = ast.getattr(py, "elts").unwrap(); | |
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410 let elts = parse_list(py, elts, parse_expr); |
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411 expr::Tuple(elts, get_ctx(py, ast)) |
| 52 | 412 } else if is_instance(&ast, &ellipsis_type) { |
| 413 expr::Ellipsis | |
| 73 | 414 } else if is_instance(&ast, &await_type) { |
| 415 let value = ast.getattr(py, "value").unwrap(); | |
| 416 let value = parse_expr(py, value); | |
| 417 | |
| 418 expr::Await(Box::new(value)) | |
| 74 | 419 } else if is_instance(&ast, &yield_type) { |
| 420 let value = ast.getattr(py, "value").unwrap(); | |
| 421 let value = parse_optional_expr(py, value); | |
| 422 | |
| 423 expr::Yield(Box::new(value)) | |
| 75 | 424 } else if is_instance(&ast, &yield_from_type) { |
| 425 let value = ast.getattr(py, "value").unwrap(); | |
| 426 let value = parse_expr(py, value); | |
| 427 | |
| 428 expr::YieldFrom(Box::new(value)) | |
| 76 | 429 } else if is_instance(&ast, &set_type) { |
| 430 let elts = ast.getattr(py, "elts").unwrap(); | |
| 431 let elements = parse_list(py, elts, parse_expr); | |
| 432 | |
| 433 expr::Set(elements) | |
| 77 | 434 } else if is_instance(&ast, &setcomp_type) { |
| 435 let elt = ast.getattr(py, "elt").unwrap(); | |
| 436 let generators = ast.getattr(py, "generators").unwrap(); | |
| 437 | |
| 438 let elt = parse_expr(py, elt); | |
| 439 let generators = parse_list(py, generators, parse_comprehension); | |
| 440 | |
| 441 expr::SetComp(Box::new(elt), generators) | |
| 78 | 442 } else if is_instance(&ast, &generatorexp_type) { |
| 443 let elt = ast.getattr(py, "elt").unwrap(); | |
| 444 let generators = ast.getattr(py, "generators").unwrap(); | |
| 445 | |
| 446 let elt = parse_expr(py, elt); | |
| 447 let generators = parse_list(py, generators, parse_comprehension); | |
| 448 | |
| 449 expr::GeneratorExp(Box::new(elt), generators) | |
| 79 | 450 } else if is_instance(&ast, &lambda_type) { |
| 451 let args = ast.getattr(py, "args").unwrap(); | |
| 452 let body = ast.getattr(py, "body").unwrap(); | |
| 453 | |
| 454 let args = parse_arguments(py, args); | |
| 455 let body = parse_expr(py, body); | |
| 456 | |
| 457 expr::Lambda(Box::new(args), Box::new(body)) | |
| 80 | 458 } else if is_instance(&ast, &ifexp_type) { |
| 459 let test = ast.getattr(py, "test").unwrap(); | |
| 460 let body = ast.getattr(py, "body").unwrap(); | |
| 461 let orelse = ast.getattr(py, "orelse").unwrap(); | |
| 462 | |
| 463 let test = parse_expr(py, test); | |
| 464 let body = parse_expr(py, body); | |
| 465 let orelse = parse_expr(py, orelse); | |
| 466 | |
| 467 expr::IfExp(Box::new(test), Box::new(body), Box::new(orelse)) | |
| 81 | 468 } else if is_instance(&ast, &dict_type) { |
| 469 let keys = ast.getattr(py, "keys").unwrap(); | |
| 470 let values = ast.getattr(py, "values").unwrap(); | |
| 471 | |
| 472 let keys = parse_list(py, keys, parse_optional_expr); | |
| 473 let values = parse_list(py, values, parse_expr); | |
| 474 | |
| 475 expr::Dict(keys, values) | |
| 16 | 476 } else { |
|
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477 println!("expr {}", ast); |
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478 unreachable!() |
| 0 | 479 } |
| 480 } | |
| 481 | |
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482 fn parse_arg(py: Python, ast: PyObject) -> arg { |
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483 let arg = ast.getattr(py, "arg").unwrap(); |
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484 let annotation = ast.getattr(py, "annotation").unwrap(); |
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485 |
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486 let arg = get_str(py, arg); |
|
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487 let annotation = parse_optional_expr(py, annotation); |
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488 |
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489 arg{arg: arg, annotation: annotation} |
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490 } |
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491 |
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492 fn parse_arguments(py: Python, ast: PyObject) -> arguments { |
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493 let builtins_module = py.import("builtins").unwrap(); |
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494 let isinstance = builtins_module.get(py, "isinstance").unwrap(); |
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495 |
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496 let is_instance = |object: &PyObject, type_: &PyObject| { |
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497 return isinstance.call(py, (object, type_), None).unwrap().is_true(py).unwrap(); |
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498 }; |
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499 |
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500 let ast_module = py.import("ast").unwrap(); |
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501 let ast_type = ast_module.get(py, "AST").unwrap(); |
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502 let arguments_type = ast_module.get(py, "arguments").unwrap(); |
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503 let arg_type = ast_module.get(py, "arg").unwrap(); |
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504 |
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505 assert!(is_instance(&ast, &ast_type)); |
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506 |
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507 if is_instance(&ast, &arguments_type) { |
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508 let args = arguments{ |
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509 //args: Vec<arg>, |
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510 args: { |
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511 let args = ast.getattr(py, "args").unwrap(); |
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512 let mut arguments = vec!(); |
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513 for arg in args.iter(py).unwrap() { |
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514 let arg = arg.unwrap(); |
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515 assert!(is_instance(&arg, &arg_type)); |
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516 let arg = parse_arg(py, arg); |
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517 arguments.push(arg); |
|
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518 } |
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519 arguments |
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520 }, |
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521 //vararg: Option<arg>, |
|
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522 vararg: { |
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523 let vararg = ast.getattr(py, "vararg").unwrap(); |
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524 if vararg == py.None() { |
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525 None |
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526 } else { |
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527 let arg = parse_arg(py, vararg); |
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528 Some(arg) |
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529 } |
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530 }, |
|
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531 //kwonlyargs: Vec<arg>, |
|
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532 kwonlyargs: { |
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533 let kwonlyargs = ast.getattr(py, "kwonlyargs").unwrap(); |
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534 let mut arguments = vec!(); |
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535 for arg in kwonlyargs.iter(py).unwrap() { |
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536 let arg = arg.unwrap(); |
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537 assert!(is_instance(&arg, &arg_type)); |
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538 let arg = parse_arg(py, arg); |
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539 arguments.push(arg); |
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540 } |
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541 arguments |
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542 }, |
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543 //kw_defaults: Vec<Option<expr>>, |
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544 kw_defaults: { |
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545 let kw_defaults = ast.getattr(py, "kw_defaults").unwrap(); |
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546 let mut arguments = vec!(); |
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547 for arg in kw_defaults.iter(py).unwrap() { |
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548 let arg = arg.unwrap(); |
|
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|
549 let arg = parse_optional_expr(py, arg); |
|
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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|
550 |
|
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551 arguments.push(arg); |
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552 } |
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|
553 arguments |
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|
554 }, |
|
13
38b0d63697b1
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|
555 //kwarg: Option<arg>, |
|
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|
556 kwarg: { |
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557 let kwarg = ast.getattr(py, "kwarg").unwrap(); |
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558 if kwarg == py.None() { |
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559 None |
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560 } else { |
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561 let arg = parse_arg(py, kwarg); |
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562 Some(arg) |
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563 } |
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564 }, |
|
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565 //defaults: Vec<expr> |
|
56
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|
566 defaults: { |
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|
567 let defaults = ast.getattr(py, "defaults").unwrap(); |
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|
568 let mut arguments = vec!(); |
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|
569 for arg in defaults.iter(py).unwrap() { |
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|
570 let arg = arg.unwrap(); |
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|
571 let arg = parse_expr(py, arg); |
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|
572 arguments.push(arg); |
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|
573 } |
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574 arguments |
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|
575 } |
|
13
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|
576 }; |
|
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|
577 args |
|
38b0d63697b1
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|
578 } else { |
|
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|
579 println!("arguments {}", ast); |
|
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|
580 panic!() |
|
38b0d63697b1
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diff
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|
581 } |
|
38b0d63697b1
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|
582 } |
|
38b0d63697b1
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|
583 |
|
38b0d63697b1
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|
584 fn parse_statement(py: Python, ast: PyObject) -> stmt { |
|
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|
585 //stmt::FunctionDef(expr::Name("function".to_string()), vec!(expr::Name("a".to_string()), expr::Name("b".to_string())), vec!()) |
|
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Import the full AST grammar from CPython 3.5.
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|
586 //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 | 587 |
| 588 let builtins_module = py.import("builtins").unwrap(); | |
| 589 let isinstance = builtins_module.get(py, "isinstance").unwrap(); | |
| 590 | |
| 591 let is_instance = |object: &PyObject, type_: &PyObject| { | |
| 592 return isinstance.call(py, (object, type_), None).unwrap().is_true(py).unwrap(); | |
| 593 }; | |
| 594 | |
| 595 let ast_module = py.import("ast").unwrap(); | |
| 596 let ast_type = ast_module.get(py, "AST").unwrap(); | |
|
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597 let class_def_type = ast_module.get(py, "ClassDef").unwrap(); |
| 0 | 598 let function_def_type = ast_module.get(py, "FunctionDef").unwrap(); |
|
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599 let async_function_def_type = ast_module.get(py, "AsyncFunctionDef").unwrap(); |
| 0 | 600 let global_type = ast_module.get(py, "Global").unwrap(); |
| 51 | 601 let nonlocal_type = ast_module.get(py, "Nonlocal").unwrap(); |
| 0 | 602 let assign_type = ast_module.get(py, "Assign").unwrap(); |
|
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603 let aug_assign_type = ast_module.get(py, "AugAssign").unwrap(); |
| 0 | 604 let return_type = ast_module.get(py, "Return").unwrap(); |
| 605 let import_from_type = ast_module.get(py, "ImportFrom").unwrap(); | |
|
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|
606 let import_type = ast_module.get(py, "Import").unwrap(); |
| 0 | 607 let if_type = ast_module.get(py, "If").unwrap(); |
|
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608 let while_type = ast_module.get(py, "While").unwrap(); |
|
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|
609 let for_type = ast_module.get(py, "For").unwrap(); |
| 71 | 610 let async_for_type = ast_module.get(py, "AsyncFor").unwrap(); |
| 0 | 611 let expr_type = ast_module.get(py, "Expr").unwrap(); |
|
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|
612 let break_type = ast_module.get(py, "Break").unwrap(); |
| 21 | 613 let delete_type = ast_module.get(py, "Delete").unwrap(); |
| 49 | 614 let pass_type = ast_module.get(py, "Pass").unwrap(); |
| 50 | 615 let continue_type = ast_module.get(py, "Continue").unwrap(); |
| 57 | 616 let assert_type = ast_module.get(py, "Assert").unwrap(); |
| 59 | 617 let with_type = ast_module.get(py, "With").unwrap(); |
| 72 | 618 let async_with_type = ast_module.get(py, "AsyncWith").unwrap(); |
| 60 | 619 let raise_type = ast_module.get(py, "Raise").unwrap(); |
| 68 | 620 let try_type = ast_module.get(py, "Try").unwrap(); |
| 0 | 621 |
| 622 assert!(is_instance(&ast, &ast_type)); | |
| 623 | |
| 624 /* | |
| 625 // TODO: implement Hash for PyObject. (trivial) | |
| 626 let map = { | |
| 627 let fields = ast.getattr(py, "_fields").unwrap(); | |
| 628 let mut map = HashMap::new(); | |
| 629 for field in fields.iter(py).unwrap() { | |
| 630 let field = field.unwrap(); | |
| 631 let value = ast.getattr(py, field).unwrap(); | |
| 632 map.insert(field, value); | |
| 633 } | |
| 634 map | |
| 635 }; | |
| 636 */ | |
| 637 | |
|
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|
638 if is_instance(&ast, &class_def_type) { |
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639 let name = ast.getattr(py, "name").unwrap(); |
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640 let bases = ast.getattr(py, "bases").unwrap(); |
|
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641 let keywords = ast.getattr(py, "keywords").unwrap(); |
|
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642 let body = ast.getattr(py, "body").unwrap(); |
|
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643 let decorator_list = ast.getattr(py, "decorator_list").unwrap(); |
|
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644 |
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645 let name = get_str(py, name); |
|
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646 let bases = parse_list(py, bases, parse_expr); |
|
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|
647 let keywords = parse_list(py, keywords, parse_keyword); |
|
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648 let body = parse_list(py, body, parse_statement); |
|
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649 let decorator_list = parse_list(py, decorator_list, parse_expr); |
|
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|
650 |
|
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|
651 stmt::ClassDef(name, bases, keywords, body, decorator_list) |
|
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652 } else if is_instance(&ast, &function_def_type) || is_instance(&ast, &async_function_def_type) { |
| 0 | 653 let name = ast.getattr(py, "name").unwrap(); |
| 654 let args = ast.getattr(py, "args").unwrap(); | |
| 655 let body = ast.getattr(py, "body").unwrap(); | |
|
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656 let decorator_list = ast.getattr(py, "decorator_list").unwrap(); |
|
63
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657 let returns = ast.getattr(py, "returns").unwrap(); |
| 0 | 658 |
|
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659 let name = get_str(py, name); |
|
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660 let args = parse_arguments(py, args); |
|
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661 let body = parse_list(py, body, parse_statement); |
|
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662 let decorator_list = parse_list(py, decorator_list, parse_expr); |
|
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663 let returns = parse_optional_expr(py, returns); |
|
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664 |
|
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665 stmt::FunctionDef(name, args, body, decorator_list, returns, is_instance(&ast, &async_function_def_type)) |
| 0 | 666 } else if is_instance(&ast, &global_type) { |
| 667 let names = ast.getattr(py, "names").unwrap(); | |
|
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668 let names = parse_list(py, names, get_str); |
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669 stmt::Global(names) |
| 51 | 670 } else if is_instance(&ast, &nonlocal_type) { |
| 671 let names = ast.getattr(py, "names").unwrap(); | |
| 672 let names = parse_list(py, names, get_str); | |
| 673 stmt::Nonlocal(names) | |
| 0 | 674 } else if is_instance(&ast, &if_type) { |
| 675 let test = ast.getattr(py, "test").unwrap(); | |
| 676 let body = ast.getattr(py, "body").unwrap(); | |
| 677 let orelse = ast.getattr(py, "orelse").unwrap(); | |
| 678 | |
| 679 let test = parse_expr(py, test); | |
|
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680 let body = parse_list(py, body, parse_statement); |
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681 let orelse = parse_list(py, orelse, parse_statement); |
| 0 | 682 |
|
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683 stmt::If(test, body, orelse) |
|
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684 } else if is_instance(&ast, &while_type) { |
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685 let test = ast.getattr(py, "test").unwrap(); |
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686 let body = ast.getattr(py, "body").unwrap(); |
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687 let orelse = ast.getattr(py, "orelse").unwrap(); |
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|
688 |
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Add ast.While and ast.Break.
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|
689 let test = parse_expr(py, test); |
|
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690 let body = parse_list(py, body, parse_statement); |
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|
691 let orelse = parse_list(py, orelse, parse_statement); |
|
6
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|
692 |
|
20
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|
693 stmt::While(test, body, orelse) |
| 71 | 694 } else if is_instance(&ast, &for_type) || is_instance(&ast, &async_for_type) { |
|
5
ddf372373a77
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|
695 let target = ast.getattr(py, "target").unwrap(); |
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|
696 let iter = ast.getattr(py, "iter").unwrap(); |
|
ddf372373a77
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|
697 let body = ast.getattr(py, "body").unwrap(); |
|
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|
698 let orelse = ast.getattr(py, "orelse").unwrap(); |
|
ddf372373a77
Add ast.For, ast.UnaryOp, and Sub and Div to ast.BinOp.
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changeset
|
699 |
|
ddf372373a77
Add ast.For, ast.UnaryOp, and Sub and Div to ast.BinOp.
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|
700 let target = parse_expr(py, target); |
|
ddf372373a77
Add ast.For, ast.UnaryOp, and Sub and Div to ast.BinOp.
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changeset
|
701 let iter = parse_expr(py, iter); |
|
20
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diff
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|
702 let body = parse_list(py, body, parse_statement); |
|
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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diff
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|
703 let orelse = parse_list(py, orelse, parse_statement); |
|
5
ddf372373a77
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parents:
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|
704 |
| 71 | 705 stmt::For(target, iter, body, orelse, is_instance(&ast, &async_for_type)) |
| 0 | 706 } else if is_instance(&ast, &assign_type) { |
| 707 let targets = ast.getattr(py, "targets").unwrap(); | |
| 708 let value = ast.getattr(py, "value").unwrap(); | |
| 709 | |
|
20
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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diff
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|
710 let targets = parse_list(py, targets, parse_expr); |
| 0 | 711 let value = parse_expr(py, value); |
| 712 | |
|
20
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diff
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|
713 stmt::Assign(targets, value) |
|
8
94ff501bf336
Add ast.AugAssign.
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diff
changeset
|
714 } else if is_instance(&ast, &aug_assign_type) { |
|
94ff501bf336
Add ast.AugAssign.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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changeset
|
715 let target = ast.getattr(py, "target").unwrap(); |
|
94ff501bf336
Add ast.AugAssign.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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|
716 let op = ast.getattr(py, "op").unwrap(); |
|
94ff501bf336
Add ast.AugAssign.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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diff
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|
717 let value = ast.getattr(py, "value").unwrap(); |
|
94ff501bf336
Add ast.AugAssign.
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parents:
7
diff
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|
718 |
|
94ff501bf336
Add ast.AugAssign.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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diff
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|
719 let target = parse_expr(py, target); |
|
13
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
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|
720 let op = parse_operator(py, op); |
|
8
94ff501bf336
Add ast.AugAssign.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
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diff
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|
721 let value = parse_expr(py, value); |
|
94ff501bf336
Add ast.AugAssign.
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diff
changeset
|
722 |
|
13
38b0d63697b1
Import the full AST grammar from CPython 3.5.
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parents:
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diff
changeset
|
723 stmt::AugAssign(target, op, value) |
| 0 | 724 } else if is_instance(&ast, &import_from_type) { |
| 725 let module = ast.getattr(py, "module").unwrap(); | |
| 726 let names = ast.getattr(py, "names").unwrap(); | |
|
13
38b0d63697b1
Import the full AST grammar from CPython 3.5.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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|
727 let level = ast.getattr(py, "level").unwrap(); |
| 0 | 728 |
|
1
b90e49ab734b
Factorise conversion of Python str into Rust String.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
0
diff
changeset
|
729 let module = get_str(py, module); |
|
44
5f1d285471af
Finish ImportFrom conversion and add a test for it.
Bastien Orivel <eijebong@bananium.fr>
parents:
21
diff
changeset
|
730 let names = parse_list(py, names, parse_alias); |
| 0 | 731 |
|
48
039f85b187f2
Also handle relative imports.
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47
diff
changeset
|
732 if level == py.None() { |
|
039f85b187f2
Also handle relative imports.
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diff
changeset
|
733 stmt::ImportFrom(module, names, None) |
|
039f85b187f2
Also handle relative imports.
Bastien Orivel <eijebong@bananium.fr>
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diff
changeset
|
734 } else { |
|
039f85b187f2
Also handle relative imports.
Bastien Orivel <eijebong@bananium.fr>
parents:
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diff
changeset
|
735 let level = level.extract(py).unwrap(); |
|
039f85b187f2
Also handle relative imports.
Bastien Orivel <eijebong@bananium.fr>
parents:
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diff
changeset
|
736 stmt::ImportFrom(module, names, Some(level)) |
|
039f85b187f2
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diff
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|
737 } |
|
47
38f59b0efc2c
Handle Import and add a test for it.
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diff
changeset
|
738 } else if is_instance(&ast, &import_type) { |
|
38f59b0efc2c
Handle Import and add a test for it.
Bastien Orivel <eijebong@bananium.fr>
parents:
44
diff
changeset
|
739 let names = ast.getattr(py, "names").unwrap(); |
|
38f59b0efc2c
Handle Import and add a test for it.
Bastien Orivel <eijebong@bananium.fr>
parents:
44
diff
changeset
|
740 let names = parse_list(py, names, parse_alias); |
|
38f59b0efc2c
Handle Import and add a test for it.
Bastien Orivel <eijebong@bananium.fr>
parents:
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diff
changeset
|
741 |
|
38f59b0efc2c
Handle Import and add a test for it.
Bastien Orivel <eijebong@bananium.fr>
parents:
44
diff
changeset
|
742 stmt::Import(names) |
| 0 | 743 } else if is_instance(&ast, &return_type) { |
| 744 let value = ast.getattr(py, "value").unwrap(); | |
|
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>
parents:
60
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745 let value = parse_optional_expr(py, value); |
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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>
parents:
60
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changeset
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746 |
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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>
parents:
60
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747 stmt::Return(value) |
| 0 | 748 } else if is_instance(&ast, &expr_type) { |
| 749 let value = ast.getattr(py, "value").unwrap(); | |
| 750 let value = parse_expr(py, value); | |
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38b0d63697b1
Import the full AST grammar from CPython 3.5.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
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751 stmt::Expr(value) |
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6
6f2bf13f4cb5
Add ast.While and ast.Break.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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752 } else if is_instance(&ast, &break_type) { |
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38b0d63697b1
Import the full AST grammar from CPython 3.5.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
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753 stmt::Break |
| 21 | 754 } else if is_instance(&ast, &delete_type) { |
| 755 let targets = ast.getattr(py, "targets").unwrap(); | |
| 756 let targets = parse_list(py, targets, parse_expr); | |
| 757 stmt::Delete(targets) | |
| 49 | 758 } else if is_instance(&ast, &pass_type) { |
| 759 stmt::Pass | |
| 50 | 760 } else if is_instance(&ast, &continue_type) { |
| 761 stmt::Continue | |
| 57 | 762 } else if is_instance(&ast, &assert_type) { |
| 763 let test = ast.getattr(py, "test").unwrap(); | |
| 764 let msg = ast.getattr(py, "msg").unwrap(); | |
| 765 | |
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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>
parents:
60
diff
changeset
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766 let test = parse_expr(py, test); |
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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>
parents:
60
diff
changeset
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767 let msg = parse_optional_expr(py, msg); |
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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>
parents:
60
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768 |
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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>
parents:
60
diff
changeset
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769 stmt::Assert(test, msg) |
| 72 | 770 } else if is_instance(&ast, &with_type) || is_instance(&ast, &async_with_type) { |
| 59 | 771 let items = ast.getattr(py, "items").unwrap(); |
| 772 let body = ast.getattr(py, "body").unwrap(); | |
| 773 | |
| 774 let items = parse_list(py, items, parse_withitem); | |
| 775 let body = parse_list(py, body, parse_statement); | |
| 72 | 776 stmt::With(items, body, is_instance(&ast, &async_with_type)) |
| 60 | 777 } else if is_instance(&ast, &raise_type) { |
| 778 let exc = ast.getattr(py, "exc").unwrap(); | |
| 779 let cause = ast.getattr(py, "cause").unwrap(); | |
| 780 | |
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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>
parents:
60
diff
changeset
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781 let exc = parse_optional_expr(py, exc); |
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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>
parents:
60
diff
changeset
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782 let cause = parse_optional_expr(py, cause); |
| 60 | 783 |
|
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>
parents:
60
diff
changeset
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784 stmt::Raise(exc, cause) |
| 68 | 785 } else if is_instance(&ast, &try_type) { |
| 786 let body = ast.getattr(py, "body").unwrap(); | |
| 787 let excepthandlers = ast.getattr(py, "handlers").unwrap(); | |
| 788 let orelse = ast.getattr(py, "orelse").unwrap(); | |
| 789 let finalbody = ast.getattr(py, "finalbody").unwrap(); | |
| 790 | |
| 791 let body = parse_list(py, body, parse_statement); | |
| 792 let excepthandlers = parse_list(py, excepthandlers, parse_excepthandler); | |
| 793 let orelse = parse_list(py, orelse, parse_statement); | |
| 794 let finalbody = parse_list(py, finalbody, parse_statement); | |
| 795 | |
| 796 stmt::Try(body, excepthandlers, orelse, finalbody) | |
| 0 | 797 } else { |
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13
38b0d63697b1
Import the full AST grammar from CPython 3.5.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
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798 println!("stmt {}", ast); |
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38b0d63697b1
Import the full AST grammar from CPython 3.5.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
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799 panic!() |
| 0 | 800 } |
| 801 } | |
| 802 | |
| 803 #[allow(dead_code)] | |
| 804 pub fn convert_ast(name: String, module: &PyObject) -> Module { | |
| 805 let gil = Python::acquire_gil(); | |
| 806 let py = gil.python(); | |
| 807 | |
| 808 let builtins_module = py.import("builtins").unwrap(); | |
| 809 let isinstance = builtins_module.get(py, "isinstance").unwrap(); | |
| 810 | |
| 811 let ast_module = py.import("ast").unwrap(); | |
| 812 let module_type = ast_module.get(py, "Module").unwrap(); | |
| 813 | |
| 814 assert!(isinstance.call(py, (module, module_type), None).unwrap().is_true(py).unwrap()); | |
| 815 | |
| 816 let body = module.getattr(py, "body").unwrap(); | |
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20
ace12d6b9855
Replace every loop in ast_convert with parse_list.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
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817 let body = parse_list(py, body, parse_statement); |
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ace12d6b9855
Replace every loop in ast_convert with parse_list.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
19
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818 Module{name: name, statements: body} |
| 0 | 819 } |