Mercurial > python-compiler.rs

annotate src/ast_dump.rs @ 53:1a815946c2e5

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Implement keywords in expr::Call, and add some tests.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Sun, 12 Jun 2016 02:37:28 +0100
parents d9838e8b3ec5
children ad2453a55820
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 use python_ast::{Module, stmt, expr, boolop, operator, unaryop, cmpop, arguments, arg, keyword, comprehension};
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211b0df72e64 Hello world!
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2
211b0df72e64 Hello world!
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3 use std::iter;
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4
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5 impl boolop {
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6 fn to_string(&self) -> &'static str {
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7 match *self {
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8 boolop::And => " and ",
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9 boolop::Or => " or "
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10 }
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11 }
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12 }
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14 impl operator {
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15 fn to_string(&self) -> &'static str {
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16 match *self {
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17 operator::Add => "+",
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18 operator::Sub => "-",
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19 operator::Mult => "*",
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20 operator::MatMult => "@",
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21 operator::Div => "/",
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22 operator::Mod => "%",
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23 operator::Pow => "**",
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24 operator::LShift => "<<",
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25 operator::RShift => ">>",
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26 operator::BitOr => "|",
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27 operator::BitXor => "^",
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28 operator::BitAnd => "&",
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29 operator::FloorDiv => "//",
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30 }
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31 }
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32 }
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33
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34 impl unaryop {
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35 fn to_string(&self) -> &'static str {
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36 match *self {
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37 unaryop::Invert => "~",
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38 unaryop::Not => "not ",
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39 unaryop::UAdd => "+",
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40 unaryop::USub => "-"
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41 }
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42 }
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43 }
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44
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45 impl cmpop {
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46 fn to_string(&self) -> &'static str {
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47 match *self {
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48 cmpop::Eq => "==",
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49 cmpop::NotEq => "!=",
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50 cmpop::Lt => "<",
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51 cmpop::LtE => "<=",
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52 cmpop::Gt => ">",
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53 cmpop::GtE => ">=",
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54 cmpop::Is => "is",
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55 cmpop::IsNot => "is not",
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56 cmpop::In => "in",
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57 cmpop::NotIn => "not in",
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58 }
211b0df72e64 Hello world!
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59 }
211b0df72e64 Hello world!
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60 }
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61
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62 fn args_to_strings(args: Vec<expr>) -> Vec<String> {
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63 let mut arguments = vec!();
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64 for arg in args {
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65 arguments.push(arg.to_string());
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66 }
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67 arguments
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68 }
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69
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70 fn args_to_string(args: Vec<expr>) -> String {
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71 let mut arguments = vec!();
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72 for arg in args {
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73 arguments.push(arg.to_string());
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74 }
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75 arguments.join(", ")
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76 }
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77
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78 impl keyword {
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79 fn to_string(&self) -> String {
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80 match self.arg.clone() {
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81 Some(arg) => format!("{}={}", arg, self.value.to_string()),
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82 None => format!("**{}", self.value.to_string())
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83 }
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84 }
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85 }
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86
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87 fn kwargs_to_strings(kwargs: Vec<keyword>) -> Vec<String> {
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88 let mut arguments = vec!();
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89 for kwarg in kwargs {
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90 arguments.push(kwarg.to_string());
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91 }
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92 arguments
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93 }
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94
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95 fn arguments_to_string(args: arguments) -> String {
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96 let mut arguments = vec!();
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97 for arg in args.args {
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98 arguments.push(arg.arg);
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99 }
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100 arguments.join(", ")
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101 }
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102
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103 fn statements_to_string(indent: usize, body: Vec<stmt>) -> String {
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104 let mut statements = vec!();
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105 for statement in body {
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106 statements.push(statement.to_string(indent + 1));
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107 }
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108 statements.join("\n")
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109 }
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110
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111 fn if_else_statements_to_string(indent: usize, body: Vec<stmt>, orelse: Vec<stmt>) -> String {
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112 let body = statements_to_string(indent, body);
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113 if orelse.is_empty() {
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114 body
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115 } else {
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116 format!("{}\n{}else:\n{}", body, make_indent(indent), statements_to_string(indent, orelse))
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117 }
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118 }
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119
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120 fn generators_to_string(generators: Vec<comprehension>) -> String {
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121 let mut result = vec!();
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122 for generator in generators {
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123 result.push(format!("for {} in {}", generator.target.to_string(), generator.iter.to_string()));
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124 for if_ in generator.ifs {
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125 result.push(format!("if {}", if_.to_string()))
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126 }
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127 }
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128 result.join(" ")
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129 }
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130 impl expr {
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131 fn to_string(&self) -> String {
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132 match self.clone() {
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133 expr::BoolOp(op, values) => {
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134 let mut data = vec!();
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135 for value in values {
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136 data.push(value.to_string());
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137 }
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138 data.join(op.to_string())
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139 },
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140 expr::BinOp(a, op, b) => format!("{} {} {}", a.to_string(), op.to_string(), b.to_string()),
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141 expr::UnaryOp(op, operand) => format!("{}{}", op.to_string(), operand.to_string()),
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142
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143 expr::Compare(left, ops, comparators) => format!("{} {}", left.to_string(), {
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144 let mut arguments = vec!();
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145
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146 // XXX: wrong order!
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147 for op in ops {
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148 arguments.push(op.to_string().to_string())
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149 }
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150 for comparator in comparators {
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151 arguments.push(comparator.to_string())
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152 }
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153 /*
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154 for (op, comparator) in ops.zip(comparators) {
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155 let op = op.unwrap();
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156 let comparator = comparator.unwrap();
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157 arguments.push(format!("{} {}", op.to_string(), comparator.to_string()))
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158 }
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159 */
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160
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161 arguments.join(" ")
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162 }),
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163 expr::Call(func, args, keywords) => format!("{}({})", func.to_string(), {
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164 let mut arguments = vec!();
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165 let args = args_to_strings(args);
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166 let keywords = kwargs_to_strings(keywords);
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167 arguments.extend(args);
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168 arguments.extend(keywords);
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169 arguments.join(", ")
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170 }),
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171 expr::Num(n) => format!("{}", n),
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172 expr::Str(s) => format!("\"{}\"", s),
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173 expr::NameConstant(name) => format!("{}", name),
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174 expr::Attribute(value, attr, ctx) => format!("{}.{}", value.to_string(), attr),
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175 expr::Name(name, ctx) => format!("{}", name),
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176 expr::List(elts, ctx) => format!("[{}]", args_to_string(elts)),
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177 expr::ListComp(elt, generators) => format!("[{} {}]", elt.to_string(), generators_to_string(generators)),
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f1c77634a2eb Add ast.Tuple
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178 expr::DictComp(key, value, generators) => format!("{{{}: {} {}}}", key.to_string(), value.to_string(), generators_to_string(generators)),
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179 expr::Tuple(elts, ctx) => format!("({})", args_to_string(elts)),
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180 expr::Ellipsis => format!("..."),
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181 }
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182 }
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183 }
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184
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185 impl arguments {
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186 fn to_string(&self) -> String {
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187 let mut args = vec!();
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188 for arg in self.args.clone() {
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189 args.push(arg.arg);
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190 }
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191 args.join(", ")
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192 }
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193 }
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194
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195 fn make_indent(indent: usize) -> String {
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196 iter::repeat(" ").take(indent).collect()
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197 }
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198
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199 impl stmt {
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200 fn to_string(&self, indent: usize) -> String {
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201 let current_indent = make_indent(indent);
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202 match self.clone() {
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e244c492ff07 Add a test for ClassDef and fix ast_dump for smt::ClassDef.
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203 stmt::ClassDef(name, bases, keywords, body, decorator_list) => format!("{}class {}({}):\n{}", current_indent, name, args_to_string(bases), statements_to_string(indent, body)),
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204 stmt::FunctionDef(name, arguments, body, decorator_list, returns) => format!("{}def {}({}):\n{}", current_indent, name, arguments_to_string(arguments), statements_to_string(indent, body)),
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205 stmt::Global(names) => format!("{}global {}", current_indent, names.join(", ")),
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206 stmt::Nonlocal(names) => format!("{}nonlocal {}", current_indent, names.join(", ")),
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207 stmt::If(test, body, orelse) => format!("{}if {}:\n{}", current_indent, test.to_string(), if_else_statements_to_string(indent, body, orelse)),
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208 stmt::While(test, body, orelse) => format!("{}while {}:\n{}", current_indent, test.to_string(), if_else_statements_to_string(indent, body, orelse)),
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209 stmt::For(target, iter, body, orelse) => format!("{}for {} in {}:\n{}", current_indent, target.to_string(), iter.to_string(), if_else_statements_to_string(indent, body, orelse)),
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210 stmt::Assign(targets, value) => format!("{}{} = {}", current_indent, args_to_string(targets), value.to_string()),
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211 stmt::AugAssign(target, op, value) => format!("{}{} {}= {}", current_indent, target.to_string(), op.to_string(), value.to_string()),
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212 stmt::Return(expr) => format!("{}return{}", current_indent, match expr {
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213 Some(expr) => format!(" {}", expr.to_string()),
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214 None => "".to_string()
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215 }),
48
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216 stmt::ImportFrom(module, names, level) => {
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217 format!("{}from {}{} import {}",
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218 current_indent,
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219 {
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220 match level {
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221 None => String::new(),
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222 Some(level) => { let dots: String = iter::repeat(".").take(level as usize).collect(); dots }
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223 }
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224 },
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225 module.to_string(),
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226 {
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227 let mut names_ = vec!();
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228 for name in names {
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229 match name.asname {
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230 None => names_.push(name.name),
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231 Some(asname) => names_.push(format!("{} as {}", name.name, asname))
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232 }
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233 }
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234 names_.join(", ")
44
5f1d285471af Finish ImportFrom conversion and add a test for it.
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235 }
48
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236 )
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237 },
47
38f59b0efc2c Handle Import and add a test for it.
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238 stmt::Import(names) => format!("{}import {}", current_indent, {
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239 let mut names_ = vec!();
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240 for name in names {
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241 match name.asname {
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242 None => names_.push(name.name),
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243 Some(asname) => names_.push(format!("{} as {}", name.name, asname))
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244 }
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245 }
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246 names_.join(", ")
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247 }),
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248 stmt::Expr(expr) => format!("{}{}", current_indent, expr.to_string()),
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249 stmt::Break => format!("{}break", current_indent),
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250 stmt::Delete(targets) => format!("{}del {}", current_indent, args_to_string(targets)),
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5edbc24b625f Add ast.Continue.
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251 stmt::Pass => format!("{}pass", current_indent),
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252 stmt::Continue => format!("{}continue", current_indent)
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253 }
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254 }
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255 }
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256
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257 #[allow(dead_code)]
22
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258 pub fn dump_ast(ast: &Module) -> String {
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259 let mut dumped_statements = vec!();
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260 for statement in &ast.statements {
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261 let dumped_statement = statement.to_string(0);
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262 dumped_statements.push(dumped_statement);
0
211b0df72e64 Hello world!
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
263 }
22
25b202005d1d Return a String from ast_dump instead of printing it directly.
Bastien Orivel <eijebong@bananium.fr>
parents: 21
diff changeset
264 dumped_statements.join("\n")
0
211b0df72e64 Hello world!
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
265 }
22
25b202005d1d Return a String from ast_dump instead of printing it directly.
Bastien Orivel <eijebong@bananium.fr>
parents: 21
diff changeset
266