Mercurial > python-compiler.rs

annotate src/ast_convert.rs @ 50:5edbc24b625f

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Add ast.Continue.
author Bastien Orivel <eijebong@bananium.fr>
date Wed, 08 Jun 2016 17:21:57 +0200
parents 141f1769e1f0
children ded1907b7a69
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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0cb53a31ac12 Implement ast.BoolOp, and improve its display.
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1 use python_ast::{Module, stmt, expr, expr_context, cmpop, boolop, operator, unaryop, arguments, arg, alias, comprehension};
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211b0df72e64 Hello world!
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2
211b0df72e64 Hello world!
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3 use cpython::{Python, PyObject};
211b0df72e64 Hello world!
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4 use cpython::ObjectProtocol; //for call method
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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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12 fn get_ctx(py: Python, object: PyObject) -> expr_context {
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13 let builtins_module = py.import("builtins").unwrap();
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14 let isinstance = builtins_module.get(py, "isinstance").unwrap();
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15
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16 let is_instance = |object: &PyObject, type_: &PyObject| {
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17 return isinstance.call(py, (object, type_), None).unwrap().is_true(py).unwrap();
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18 };
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19
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20 let ast_module = py.import("ast").unwrap();
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21 let store_type = ast_module.get(py, "Store").unwrap();
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22 let load_type = ast_module.get(py, "Load").unwrap();
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23 let del_type = ast_module.get(py, "Del").unwrap();
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24
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25 let ctx = object.getattr(py, "ctx").unwrap();
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26 if is_instance(&ctx, &store_type) {
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27 expr_context::Store
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28 } else if is_instance(&ctx, &load_type) {
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29 expr_context::Load
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30 } else if is_instance(&ctx, &del_type) {
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31 expr_context::Del
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32 } else{
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33 unreachable!();
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34 }
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35 }
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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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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
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57 fn parse_unaryop(py: Python, ast: PyObject) -> unaryop {
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58 let builtins_module = py.import("builtins").unwrap();
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59 let isinstance = builtins_module.get(py, "isinstance").unwrap();
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60
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61 let is_instance = |object: &PyObject, type_: &PyObject| {
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62 return isinstance.call(py, (object, type_), None).unwrap().is_true(py).unwrap();
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63 };
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64
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65 let ast_module = py.import("ast").unwrap();
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66 let ast_type = ast_module.get(py, "AST").unwrap();
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67 let invert_type = ast_module.get(py, "Invert").unwrap();
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68 let not_type = ast_module.get(py, "Not").unwrap();
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69 let uadd_type = ast_module.get(py, "UAdd").unwrap();
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70 let usub_type = ast_module.get(py, "USub").unwrap();
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71
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72 assert!(is_instance(&ast, &ast_type));
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73
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74 if is_instance(&ast, &invert_type) {
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75 unaryop::Invert
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76 } else if is_instance(&ast, &not_type) {
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77 unaryop::Not
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78 } else if is_instance(&ast, &uadd_type) {
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79 unaryop::UAdd
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80 } else if is_instance(&ast, &usub_type) {
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81 unaryop::USub
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82 } else {
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83 unreachable!()
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84 }
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85 }
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86
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87 fn parse_boolop(py: Python, ast: PyObject) -> boolop {
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88 let builtins_module = py.import("builtins").unwrap();
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89 let isinstance = builtins_module.get(py, "isinstance").unwrap();
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90
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91 let is_instance = |object: &PyObject, type_: &PyObject| {
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92 return isinstance.call(py, (object, type_), None).unwrap().is_true(py).unwrap();
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93 };
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94
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95 let ast_module = py.import("ast").unwrap();
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96 let ast_type = ast_module.get(py, "AST").unwrap();
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97 let and_type = ast_module.get(py, "And").unwrap();
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98 let or_type = ast_module.get(py, "Or").unwrap();
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99
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100 assert!(is_instance(&ast, &ast_type));
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101
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102 if is_instance(&ast, &and_type) {
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103 boolop::And
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104 } else if is_instance(&ast, &or_type) {
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105 boolop::Or
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106 } else {
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107 unreachable!()
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108 }
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109 }
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110
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111 fn parse_cmpop(py: Python, ast: PyObject) -> cmpop {
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112 let builtins_module = py.import("builtins").unwrap();
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113 let isinstance = builtins_module.get(py, "isinstance").unwrap();
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114
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115 let is_instance = |object: &PyObject, type_: &PyObject| {
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116 return isinstance.call(py, (object, type_), None).unwrap().is_true(py).unwrap();
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117 };
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118
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119 let ast_module = py.import("ast").unwrap();
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120 let ast_type = ast_module.get(py, "AST").unwrap();
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121 let eq_type = ast_module.get(py, "Eq").unwrap();
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122 let noteq_type = ast_module.get(py, "NotEq").unwrap();
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123 let lt_type = ast_module.get(py, "Lt").unwrap();
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124 let lte_type = ast_module.get(py, "LtE").unwrap();
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125 let gt_type = ast_module.get(py, "Gt").unwrap();
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126 let gte_type = ast_module.get(py, "GtE").unwrap();
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127 let is_type = ast_module.get(py, "Is").unwrap();
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128 let is_not_type = ast_module.get(py, "IsNot").unwrap();
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129 let in_type = ast_module.get(py, "In").unwrap();
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130 let not_in_type = ast_module.get(py, "NotIn").unwrap();
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131
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132 assert!(is_instance(&ast, &ast_type));
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133
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134 if is_instance(&ast, &eq_type) {
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135 cmpop::Eq
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136 } else if is_instance(&ast, &noteq_type) {
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137 cmpop::NotEq
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138 } else if is_instance(&ast, &lt_type) {
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139 cmpop::Lt
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140 } else if is_instance(&ast, &lte_type) {
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141 cmpop::LtE
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142 } else if is_instance(&ast, &gt_type) {
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143 cmpop::Gt
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144 } else if is_instance(&ast, &gte_type) {
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145 cmpop::GtE
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146 } else if is_instance(&ast, &is_type) {
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147 cmpop::Is
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148 } else if is_instance(&ast, &is_not_type) {
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149 cmpop::IsNot
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150 } else if is_instance(&ast, &in_type) {
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151 cmpop::In
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152 } else if is_instance(&ast, &not_in_type) {
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153 cmpop::NotIn
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154 } else {
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155 unreachable!()
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156 }
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157 }
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158
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159 fn parse_comprehension(py: Python, ast: PyObject) -> comprehension {
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160 let target = ast.getattr(py, "target").unwrap();
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161 let iter = ast.getattr(py, "iter").unwrap();
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162 let ifs = ast.getattr(py, "ifs").unwrap();
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163
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164 let target = parse_expr(py, target);
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165 let iter = parse_expr(py, iter);
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166 let ifs = parse_list(py, ifs, parse_expr);
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167
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168 comprehension {target: target, iter: iter, ifs: ifs}
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169 }
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170
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171 fn parse_operator(py: Python, ast: PyObject) -> operator {
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172 let builtins_module = py.import("builtins").unwrap();
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173 let isinstance = builtins_module.get(py, "isinstance").unwrap();
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174
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175 let is_instance = |object: &PyObject, type_: &PyObject| {
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176 return isinstance.call(py, (object, type_), None).unwrap().is_true(py).unwrap();
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177 };
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178
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179 let ast_module = py.import("ast").unwrap();
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180 let ast_type = ast_module.get(py, "AST").unwrap();
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181 let add_type = ast_module.get(py, "Add").unwrap();
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182 let sub_type = ast_module.get(py, "Sub").unwrap();
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183 let mult_type = ast_module.get(py, "Mult").unwrap();
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184 let matmult_type = ast_module.get(py, "MatMult").unwrap();
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185 let div_type = ast_module.get(py, "Div").unwrap();
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186 let mod_type = ast_module.get(py, "Mod").unwrap();
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187 let pow_type = ast_module.get(py, "Pow").unwrap();
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188 let lshift_type = ast_module.get(py, "LShift").unwrap();
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189 let rshift_type = ast_module.get(py, "RShift").unwrap();
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190 let bitor_type = ast_module.get(py, "BitOr").unwrap();
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191 let bitxor_type = ast_module.get(py, "BitXor").unwrap();
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192 let bitand_type = ast_module.get(py, "BitAnd").unwrap();
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193 let floordiv_type = ast_module.get(py, "FloorDiv").unwrap();
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194
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195 assert!(is_instance(&ast, &ast_type));
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196
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197 if is_instance(&ast, &add_type) {
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198 operator::Add
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199 } else if is_instance(&ast, &sub_type) {
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200 operator::Sub
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201 } else if is_instance(&ast, &mult_type) {
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202 operator::Mult
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203 } else if is_instance(&ast, &matmult_type) {
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204 operator::MatMult
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205 } else if is_instance(&ast, &div_type) {
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206 operator::Div
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207 } else if is_instance(&ast, &mod_type) {
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208 operator::Mod
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209 } else if is_instance(&ast, &pow_type) {
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210 operator::Pow
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211 } else if is_instance(&ast, &lshift_type) {
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212 operator::LShift
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213 } else if is_instance(&ast, &rshift_type) {
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214 operator::RShift
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215 } else if is_instance(&ast, &bitor_type) {
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216 operator::BitOr
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217 } else if is_instance(&ast, &bitxor_type) {
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218 operator::BitXor
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219 } else if is_instance(&ast, &bitand_type) {
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220 operator::BitAnd
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221 } else if is_instance(&ast, &floordiv_type) {
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222 operator::FloorDiv
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223 } else {
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224 println!("operator {}", ast);
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225 panic!()
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226 }
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227 }
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228
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229 fn parse_expr(py: Python, ast: PyObject) -> expr {
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230 let builtins_module = py.import("builtins").unwrap();
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231 let isinstance = builtins_module.get(py, "isinstance").unwrap();
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232
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233 let is_instance = |object: &PyObject, type_: &PyObject| {
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234 return isinstance.call(py, (object, type_), None).unwrap().is_true(py).unwrap();
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235 };
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236
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237 let ast_module = py.import("ast").unwrap();
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238 let ast_type = ast_module.get(py, "AST").unwrap();
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239 let arg_type = ast_module.get(py, "arg").unwrap();
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240 let unary_op_type = ast_module.get(py, "UnaryOp").unwrap();
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241 let bool_op_type = ast_module.get(py, "BoolOp").unwrap();
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242 let bin_op_type = ast_module.get(py, "BinOp").unwrap();
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243 let name_constant_type = ast_module.get(py, "NameConstant").unwrap();
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244 let attribute_type = ast_module.get(py, "Attribute").unwrap();
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245 let name_type = ast_module.get(py, "Name").unwrap();
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246 let num_type = ast_module.get(py, "Num").unwrap();
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247 let str_type = ast_module.get(py, "Str").unwrap();
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248 let list_type = ast_module.get(py, "List").unwrap();
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249 let compare_type = ast_module.get(py, "Compare").unwrap();
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250 let call_type = ast_module.get(py, "Call").unwrap();
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251 let listcomp_type = ast_module.get(py, "ListComp").unwrap();
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252 let dictcomp_type = ast_module.get(py, "DictComp").unwrap();
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253 let tuple_type = ast_module.get(py, "Tuple").unwrap();
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254
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255 assert!(is_instance(&ast, &ast_type));
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256
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257 if is_instance(&ast, &arg_type) {
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258 let arg = ast.getattr(py, "arg").unwrap();
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259 let arg = get_str(py, arg);
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260 expr::Name(arg, get_ctx(py, ast))
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261 } else if is_instance(&ast, &attribute_type) {
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262 let value = ast.getattr(py, "value").unwrap();
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263 let attr = ast.getattr(py, "attr").unwrap();
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264
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265 let value = parse_expr(py, value);
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266 let attr = get_str(py, attr);
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267
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268 expr::Attribute(Box::new(value), attr, get_ctx(py, ast))
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269 } else if is_instance(&ast, &name_type) {
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270 let id = ast.getattr(py, "id").unwrap();
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271 let id = get_str(py, id);
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272 expr::Name(id, get_ctx(py, ast))
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273 } else if is_instance(&ast, &name_constant_type) {
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274 let value = ast.getattr(py, "value").unwrap();
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275 let value = get_str(py, value);
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276 expr::NameConstant(value)
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277 } else if is_instance(&ast, &num_type) {
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278 let n = ast.getattr(py, "n").unwrap();
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279 let n = get_str(py, n);
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280 expr::Num(n)
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281 } else if is_instance(&ast, &str_type) {
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282 let s = ast.getattr(py, "s").unwrap();
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283 let s = get_str(py, s);
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284 expr::Str(s)
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285 } else if is_instance(&ast, &list_type) {
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286 let elts = ast.getattr(py, "elts").unwrap();
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287 let elements = parse_list(py, elts, parse_expr);
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288 expr::List(elements, get_ctx(py, ast))
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289 } else if is_instance(&ast, &unary_op_type) {
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290 let op = ast.getattr(py, "op").unwrap();
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291 let operand = ast.getattr(py, "operand").unwrap();
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292
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293 let op = parse_unaryop(py, op);
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294 let operand = parse_expr(py, operand);
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295
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296 expr::UnaryOp(op, Box::new(operand))
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297 } else if is_instance(&ast, &bool_op_type) {
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298 let op = ast.getattr(py, "op").unwrap();
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299 let values = ast.getattr(py, "values").unwrap();
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300
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301 let op = parse_boolop(py, op);
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302 let values = parse_list(py, values, parse_expr);
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303
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304 expr::BoolOp(op, values)
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305 } else if is_instance(&ast, &bin_op_type) {
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306 let left = ast.getattr(py, "left").unwrap();
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307 let op = ast.getattr(py, "op").unwrap();
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308 let right = ast.getattr(py, "right").unwrap();
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309
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310 let left = parse_expr(py, left);
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311 let op = parse_operator(py, op);
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312 let right = parse_expr(py, right);
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313
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314 expr::BinOp(Box::new(left), op, Box::new(right))
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315 } else if is_instance(&ast, &call_type) {
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316 let func = ast.getattr(py, "func").unwrap();
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317 let args = ast.getattr(py, "args").unwrap();
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318 let keywords = ast.getattr(py, "keywords").unwrap();
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319
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320 let func = parse_expr(py, func);
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321 let args = parse_list(py, args, parse_expr);
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322
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323 /*
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324 let mut kwargs = vec!();
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325 for arg in keywords.iter(py).unwrap() {
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326 let arg = arg.unwrap();
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327 kwargs.push(parse_expr(py, arg));
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328 }
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329 */
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330
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331 expr::Call(Box::new(func), args, vec!())
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332 } else if is_instance(&ast, &compare_type) {
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333 let left = ast.getattr(py, "left").unwrap();
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334 let ops = ast.getattr(py, "ops").unwrap();
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335 let comparators = ast.getattr(py, "comparators").unwrap();
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336
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337 let left = parse_expr(py, left);
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338 let ops = parse_list(py, ops, parse_cmpop);
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339 let comparators = parse_list(py, comparators, parse_expr);
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340
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341 expr::Compare(Box::new(left), ops, comparators)
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342 } else if is_instance(&ast, &listcomp_type) {
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343 let elt = ast.getattr(py, "elt").unwrap();
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344 let generators = ast.getattr(py, "generators").unwrap();
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345
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346 let elt = parse_expr(py, elt);
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347 let generators = parse_list(py, generators, parse_comprehension);
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348
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349 expr::ListComp(Box::new(elt), generators)
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350 } else if is_instance(&ast, &dictcomp_type) {
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351 let key = ast.getattr(py, "key").unwrap();
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352 let value = ast.getattr(py, "value").unwrap();
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353 let generators = ast.getattr(py, "generators").unwrap();
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354
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355 let key = parse_expr(py, key);
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356 let value = parse_expr(py, value);
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357 let generators = parse_list(py, generators, parse_comprehension);
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358
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359 expr::DictComp(Box::new(key), Box::new(value), generators)
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360 } else if is_instance(&ast, &tuple_type) {
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361 let elts = ast.getattr(py, "elts").unwrap();
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362 let elts = parse_list(py, elts, parse_expr);
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363 expr::Tuple(elts, get_ctx(py, ast))
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364 } else {
13
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365 println!("expr {}", ast);
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366 unreachable!()
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367 }
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368 }
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369
13
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370 fn parse_arguments(py: Python, ast: PyObject) -> arguments {
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371 let builtins_module = py.import("builtins").unwrap();
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372 let isinstance = builtins_module.get(py, "isinstance").unwrap();
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373
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374 let is_instance = |object: &PyObject, type_: &PyObject| {
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375 return isinstance.call(py, (object, type_), None).unwrap().is_true(py).unwrap();
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376 };
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377
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378 let ast_module = py.import("ast").unwrap();
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379 let ast_type = ast_module.get(py, "AST").unwrap();
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380 let arguments_type = ast_module.get(py, "arguments").unwrap();
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381 let arg_type = ast_module.get(py, "arg").unwrap();
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382
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diff changeset
383 assert!(is_instance(&ast, &ast_type));
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parents: 9
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384
38b0d63697b1 Import the full AST grammar from CPython 3.5.
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parents: 9
diff changeset
385 if is_instance(&ast, &arguments_type) {
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parents: 9
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386 let args = arguments{
38b0d63697b1 Import the full AST grammar from CPython 3.5.
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parents: 9
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387 //args: Vec<arg>,
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388 args: {
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diff changeset
389 let args = ast.getattr(py, "args").unwrap();
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390 let mut arguments = vec!();
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diff changeset
391 for arg in args.iter(py).unwrap() {
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392 let arg = arg.unwrap();
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393 assert!(is_instance(&arg, &arg_type));
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394 let arg = get_str(py, arg);
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diff changeset
395 arguments.push(arg{arg: arg, annotation: None});
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parents: 9
diff changeset
396 }
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parents: 9
diff changeset
397 arguments
38b0d63697b1 Import the full AST grammar from CPython 3.5.
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diff changeset
398 },
38b0d63697b1 Import the full AST grammar from CPython 3.5.
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parents: 9
diff changeset
399 //vararg: Option<arg>,
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400 vararg: None,
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diff changeset
401 //kwonlyargs: Vec<arg>,
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402 kwonlyargs: vec!(),
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diff changeset
403 //kw_defaults: Vec<expr>,
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404 kw_defaults: vec!(),
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diff changeset
405 //kwarg: Option<arg>,
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406 kwarg: None,
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407 //defaults: Vec<expr>
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408 defaults: vec!()
38b0d63697b1 Import the full AST grammar from CPython 3.5.
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409 };
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410 args
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411 } else {
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412 println!("arguments {}", ast);
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413 panic!()
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414 }
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parents: 9
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415 }
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parents: 9
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416
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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417 fn parse_statement(py: Python, ast: PyObject) -> stmt {
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418 //stmt::FunctionDef(expr::Name("function".to_string()), vec!(expr::Name("a".to_string()), expr::Name("b".to_string())), vec!())
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419 //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
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420
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421 let builtins_module = py.import("builtins").unwrap();
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422 let isinstance = builtins_module.get(py, "isinstance").unwrap();
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423
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424 let is_instance = |object: &PyObject, type_: &PyObject| {
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425 return isinstance.call(py, (object, type_), None).unwrap().is_true(py).unwrap();
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426 };
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427
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428 let ast_module = py.import("ast").unwrap();
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429 let ast_type = ast_module.get(py, "AST").unwrap();
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430 let class_def_type = ast_module.get(py, "ClassDef").unwrap();
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431 let function_def_type = ast_module.get(py, "FunctionDef").unwrap();
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432 let global_type = ast_module.get(py, "Global").unwrap();
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433 let assign_type = ast_module.get(py, "Assign").unwrap();
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94ff501bf336 Add ast.AugAssign.
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parents: 7
diff changeset
434 let aug_assign_type = ast_module.get(py, "AugAssign").unwrap();
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435 let return_type = ast_module.get(py, "Return").unwrap();
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436 let import_from_type = ast_module.get(py, "ImportFrom").unwrap();
47
38f59b0efc2c Handle Import and add a test for it.
Bastien Orivel <eijebong@bananium.fr>
parents: 44
diff changeset
437 let import_type = ast_module.get(py, "Import").unwrap();
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438 let if_type = ast_module.get(py, "If").unwrap();
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parents: 5
diff changeset
439 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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parents: 4
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440 let for_type = ast_module.get(py, "For").unwrap();
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441 let expr_type = ast_module.get(py, "Expr").unwrap();
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442 let break_type = ast_module.get(py, "Break").unwrap();
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7af637f444d1 Add ast.Delete
Bastien Orivel <eijebong@bananium.fr>
parents: 20
diff changeset
443 let delete_type = ast_module.get(py, "Delete").unwrap();
49
141f1769e1f0 Add ast.Pass.
Bastien Orivel <eijebong@bananium.fr>
parents: 48
diff changeset
444 let pass_type = ast_module.get(py, "Pass").unwrap();
50
5edbc24b625f Add ast.Continue.
Bastien Orivel <eijebong@bananium.fr>
parents: 49
diff changeset
445 let continue_type = ast_module.get(py, "Continue").unwrap();
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446
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447 assert!(is_instance(&ast, &ast_type));
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448
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449 /*
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parents:
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450 // TODO: implement Hash for PyObject. (trivial)
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parents:
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451 let map = {
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452 let fields = ast.getattr(py, "_fields").unwrap();
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453 let mut map = HashMap::new();
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454 for field in fields.iter(py).unwrap() {
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parents:
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455 let field = field.unwrap();
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456 let value = ast.getattr(py, field).unwrap();
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457 map.insert(field, value);
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458 }
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parents:
diff changeset
459 map
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diff changeset
460 };
211b0df72e64 Hello world!
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diff changeset
461 */
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462
2
5fc7c2790d8c Add class support.
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463 if is_instance(&ast, &class_def_type) {
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464 let name = ast.getattr(py, "name").unwrap();
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parents: 1
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465 let bases = ast.getattr(py, "bases").unwrap();
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parents: 1
diff changeset
466 //let keywords = ast.getattr(py, "keywords").unwrap();
5fc7c2790d8c Add class support.
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467 let body = ast.getattr(py, "body").unwrap();
5fc7c2790d8c Add class support.
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parents: 1
diff changeset
468 //let decorator_list = ast.getattr(py, "decorator_list").unwrap();
5fc7c2790d8c Add class support.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 1
diff changeset
469
5fc7c2790d8c Add class support.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 1
diff changeset
470 let name = get_str(py, name);
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ace12d6b9855 Replace every loop in ast_convert with parse_list.
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parents: 19
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471 let bases = parse_list(py, bases, parse_expr);
ace12d6b9855 Replace every loop in ast_convert with parse_list.
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472 let body = parse_list(py, body, parse_statement);
2
5fc7c2790d8c Add class support.
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diff changeset
473
20
ace12d6b9855 Replace every loop in ast_convert with parse_list.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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474 stmt::ClassDef(name, bases, vec!(), body, vec!())
2
5fc7c2790d8c Add class support.
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parents: 1
diff changeset
475 } else if is_instance(&ast, &function_def_type) {
0
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476 let name = ast.getattr(py, "name").unwrap();
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parents:
diff changeset
477 let args = ast.getattr(py, "args").unwrap();
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
478 let body = ast.getattr(py, "body").unwrap();
211b0df72e64 Hello world!
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
479
1
b90e49ab734b Factorise conversion of Python str into Rust String.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 0
diff changeset
480 let name = get_str(py, name);
13
38b0d63697b1 Import the full AST grammar from CPython 3.5.
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parents: 9
diff changeset
481 let args = parse_arguments(py, args);
20
ace12d6b9855 Replace every loop in ast_convert with parse_list.
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parents: 19
diff changeset
482 let body = parse_list(py, body, parse_statement);
0
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parents:
diff changeset
483
13
38b0d63697b1 Import the full AST grammar from CPython 3.5.
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parents: 9
diff changeset
484 let decorators = vec!();
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 9
diff changeset
485 let returns = None;
38b0d63697b1 Import the full AST grammar from CPython 3.5.
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parents: 9
diff changeset
486
20
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diff changeset
487 stmt::FunctionDef(name, args, body, decorators, returns)
0
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diff changeset
488 } else if is_instance(&ast, &global_type) {
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489 let names = ast.getattr(py, "names").unwrap();
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parents: 19
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490 let names = parse_list(py, names, get_str);
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diff changeset
491 stmt::Global(names)
0
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diff changeset
492 } else if is_instance(&ast, &if_type) {
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diff changeset
493 let test = ast.getattr(py, "test").unwrap();
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494 let body = ast.getattr(py, "body").unwrap();
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parents:
diff changeset
495 let orelse = ast.getattr(py, "orelse").unwrap();
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parents:
diff changeset
496
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497 let test = parse_expr(py, test);
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498 let body = parse_list(py, body, parse_statement);
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 19
diff changeset
499 let orelse = parse_list(py, orelse, parse_statement);
0
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diff changeset
500
20
ace12d6b9855 Replace every loop in ast_convert with parse_list.
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diff changeset
501 stmt::If(test, body, orelse)
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6f2bf13f4cb5 Add ast.While and ast.Break.
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parents: 5
diff changeset
502 } else if is_instance(&ast, &while_type) {
6f2bf13f4cb5 Add ast.While and ast.Break.
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parents: 5
diff changeset
503 let test = ast.getattr(py, "test").unwrap();
6f2bf13f4cb5 Add ast.While and ast.Break.
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parents: 5
diff changeset
504 let body = ast.getattr(py, "body").unwrap();
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parents: 5
diff changeset
505 let orelse = ast.getattr(py, "orelse").unwrap();
6f2bf13f4cb5 Add ast.While and ast.Break.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 5
diff changeset
506
6f2bf13f4cb5 Add ast.While and ast.Break.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 5
diff changeset
507 let test = parse_expr(py, test);
20
ace12d6b9855 Replace every loop in ast_convert with parse_list.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 19
diff changeset
508 let body = parse_list(py, body, parse_statement);
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 19
diff changeset
509 let orelse = parse_list(py, orelse, parse_statement);
6
6f2bf13f4cb5 Add ast.While and ast.Break.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 5
diff changeset
510
20
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 19
diff changeset
511 stmt::While(test, body, orelse)
5
ddf372373a77 Add ast.For, ast.UnaryOp, and Sub and Div to ast.BinOp.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 4
diff changeset
512 } else if is_instance(&ast, &for_type) {
ddf372373a77 Add ast.For, ast.UnaryOp, and Sub and Div to ast.BinOp.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 4
diff changeset
513 let target = ast.getattr(py, "target").unwrap();
ddf372373a77 Add ast.For, ast.UnaryOp, and Sub and Div to ast.BinOp.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 4
diff changeset
514 let iter = ast.getattr(py, "iter").unwrap();
ddf372373a77 Add ast.For, ast.UnaryOp, and Sub and Div to ast.BinOp.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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diff changeset
515 let body = ast.getattr(py, "body").unwrap();
ddf372373a77 Add ast.For, ast.UnaryOp, and Sub and Div to ast.BinOp.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 4
diff changeset
516 let orelse = ast.getattr(py, "orelse").unwrap();
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 4
diff changeset
517
ddf372373a77 Add ast.For, ast.UnaryOp, and Sub and Div to ast.BinOp.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 4
diff changeset
518 let target = parse_expr(py, target);
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 4
diff changeset
519 let iter = parse_expr(py, iter);
20
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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520 let body = parse_list(py, body, parse_statement);
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parents: 19
diff changeset
521 let orelse = parse_list(py, orelse, parse_statement);
5
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parents: 4
diff changeset
522
20
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diff changeset
523 stmt::For(target, iter, body, orelse)
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524 } else if is_instance(&ast, &assign_type) {
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525 let targets = ast.getattr(py, "targets").unwrap();
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526 let value = ast.getattr(py, "value").unwrap();
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parents:
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527
20
ace12d6b9855 Replace every loop in ast_convert with parse_list.
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diff changeset
528 let targets = parse_list(py, targets, parse_expr);
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529 let value = parse_expr(py, value);
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530
20
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parents: 19
diff changeset
531 stmt::Assign(targets, value)
8
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parents: 7
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532 } else if is_instance(&ast, &aug_assign_type) {
94ff501bf336 Add ast.AugAssign.
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parents: 7
diff changeset
533 let target = ast.getattr(py, "target").unwrap();
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parents: 7
diff changeset
534 let op = ast.getattr(py, "op").unwrap();
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parents: 7
diff changeset
535 let value = ast.getattr(py, "value").unwrap();
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 7
diff changeset
536
94ff501bf336 Add ast.AugAssign.
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parents: 7
diff changeset
537 let target = parse_expr(py, target);
13
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parents: 9
diff changeset
538 let op = parse_operator(py, op);
8
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 7
diff changeset
539 let value = parse_expr(py, value);
94ff501bf336 Add ast.AugAssign.
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parents: 7
diff changeset
540
13
38b0d63697b1 Import the full AST grammar from CPython 3.5.
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parents: 9
diff changeset
541 stmt::AugAssign(target, op, value)
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542 } else if is_instance(&ast, &import_from_type) {
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parents:
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543 let module = ast.getattr(py, "module").unwrap();
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544 let names = ast.getattr(py, "names").unwrap();
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parents: 9
diff changeset
545 let level = ast.getattr(py, "level").unwrap();
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546
1
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 0
diff changeset
547 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
548 let names = parse_list(py, names, parse_alias);
0
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parents:
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549
48
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parents: 47
diff changeset
550 if level == py.None() {
039f85b187f2 Also handle relative imports.
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parents: 47
diff changeset
551 stmt::ImportFrom(module, names, None)
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parents: 47
diff changeset
552 } else {
039f85b187f2 Also handle relative imports.
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parents: 47
diff changeset
553 let level = level.extract(py).unwrap();
039f85b187f2 Also handle relative imports.
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parents: 47
diff changeset
554 stmt::ImportFrom(module, names, Some(level))
039f85b187f2 Also handle relative imports.
Bastien Orivel <eijebong@bananium.fr>
parents: 47
diff changeset
555 }
47
38f59b0efc2c Handle Import and add a test for it.
Bastien Orivel <eijebong@bananium.fr>
parents: 44
diff changeset
556 } 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
557 let names = ast.getattr(py, "names").unwrap();
38f59b0efc2c Handle Import and add a test for it.
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parents: 44
diff changeset
558 let names = parse_list(py, names, parse_alias);
38f59b0efc2c Handle Import and add a test for it.
Bastien Orivel <eijebong@bananium.fr>
parents: 44
diff changeset
559
38f59b0efc2c Handle Import and add a test for it.
Bastien Orivel <eijebong@bananium.fr>
parents: 44
diff changeset
560 stmt::Import(names)
0
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diff changeset
561 } else if is_instance(&ast, &return_type) {
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562 let value = ast.getattr(py, "value").unwrap();
13
38b0d63697b1 Import the full AST grammar from CPython 3.5.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 9
diff changeset
563 if value == py.None() {
38b0d63697b1 Import the full AST grammar from CPython 3.5.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 9
diff changeset
564 stmt::Return(None)
38b0d63697b1 Import the full AST grammar from CPython 3.5.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 9
diff changeset
565 } else {
38b0d63697b1 Import the full AST grammar from CPython 3.5.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 9
diff changeset
566 let value = parse_expr(py, value);
38b0d63697b1 Import the full AST grammar from CPython 3.5.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 9
diff changeset
567 stmt::Return(Some(value))
38b0d63697b1 Import the full AST grammar from CPython 3.5.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 9
diff changeset
568 }
0
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
569 } else if is_instance(&ast, &expr_type) {
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parents:
diff changeset
570 let value = ast.getattr(py, "value").unwrap();
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
571 let value = parse_expr(py, value);
13
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 9
diff changeset
572 stmt::Expr(value)
6
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 5
diff changeset
573 } else if is_instance(&ast, &break_type) {
13
38b0d63697b1 Import the full AST grammar from CPython 3.5.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 9
diff changeset
574 stmt::Break
21
7af637f444d1 Add ast.Delete
Bastien Orivel <eijebong@bananium.fr>
parents: 20
diff changeset
575 } else if is_instance(&ast, &delete_type) {
7af637f444d1 Add ast.Delete
Bastien Orivel <eijebong@bananium.fr>
parents: 20
diff changeset
576 let targets = ast.getattr(py, "targets").unwrap();
7af637f444d1 Add ast.Delete
Bastien Orivel <eijebong@bananium.fr>
parents: 20
diff changeset
577 let targets = parse_list(py, targets, parse_expr);
7af637f444d1 Add ast.Delete
Bastien Orivel <eijebong@bananium.fr>
parents: 20
diff changeset
578 stmt::Delete(targets)
49
141f1769e1f0 Add ast.Pass.
Bastien Orivel <eijebong@bananium.fr>
parents: 48
diff changeset
579 } else if is_instance(&ast, &pass_type) {
141f1769e1f0 Add ast.Pass.
Bastien Orivel <eijebong@bananium.fr>
parents: 48
diff changeset
580 stmt::Pass
50
5edbc24b625f Add ast.Continue.
Bastien Orivel <eijebong@bananium.fr>
parents: 49
diff changeset
581 } else if is_instance(&ast, &continue_type) {
5edbc24b625f Add ast.Continue.
Bastien Orivel <eijebong@bananium.fr>
parents: 49
diff changeset
582 stmt::Continue
0
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
583 } else {
13
38b0d63697b1 Import the full AST grammar from CPython 3.5.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 9
diff changeset
584 println!("stmt {}", ast);
38b0d63697b1 Import the full AST grammar from CPython 3.5.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 9
diff changeset
585 panic!()
0
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
586 }
211b0df72e64 Hello world!
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
587 }
211b0df72e64 Hello world!
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
588
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
589 #[allow(dead_code)]
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
590 pub fn convert_ast(name: String, module: &PyObject) -> Module {
211b0df72e64 Hello world!
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
591 let gil = Python::acquire_gil();
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
592 let py = gil.python();
211b0df72e64 Hello world!
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
593
211b0df72e64 Hello world!
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
594 let builtins_module = py.import("builtins").unwrap();
211b0df72e64 Hello world!
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
595 let isinstance = builtins_module.get(py, "isinstance").unwrap();
211b0df72e64 Hello world!
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
596
211b0df72e64 Hello world!
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
597 let ast_module = py.import("ast").unwrap();
211b0df72e64 Hello world!
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
598 let module_type = ast_module.get(py, "Module").unwrap();
211b0df72e64 Hello world!
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
599
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
600 assert!(isinstance.call(py, (module, module_type), None).unwrap().is_true(py).unwrap());
211b0df72e64 Hello world!
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
601
211b0df72e64 Hello world!
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
602 let body = module.getattr(py, "body").unwrap();
20
ace12d6b9855 Replace every loop in ast_convert with parse_list.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 19
diff changeset
603 let body = parse_list(py, body, parse_statement);
ace12d6b9855 Replace every loop in ast_convert with parse_list.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 19
diff changeset
604 Module{name: name, statements: body}
0
211b0df72e64 Hello world!
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
605 }