Mercurial > python-compiler.rs

annotate src/ast_dump.rs @ 92:7977a52c3202

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Fix chained assigns.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Tue, 28 Jun 2016 01:22:35 +0100
parents 859d44f143b8
children 20c1c9d7803d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
86
a7b1db623f41 Implement NameConstant correctly.
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1 use python_ast::{Module, stmt, expr, boolop, operator, unaryop, cmpop, arguments, arg, keyword, comprehension, withitem, excepthandler, slice, name_constant};
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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 trait ToStringable {
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6 fn to_string(&self) -> String;
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7 }
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8
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9 impl boolop {
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10 fn to_string(&self) -> &'static str {
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11 match *self {
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12 boolop::And => " and ",
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13 boolop::Or => " or "
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14 }
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15 }
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16 }
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17
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18 impl operator {
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19 fn to_string(&self) -> &'static str {
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20 match *self {
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21 operator::Add => "+",
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22 operator::Sub => "-",
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23 operator::Mult => "*",
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24 operator::MatMult => "@",
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25 operator::Div => "/",
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26 operator::Mod => "%",
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27 operator::Pow => "**",
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28 operator::LShift => "<<",
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29 operator::RShift => ">>",
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30 operator::BitOr => "|",
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31 operator::BitXor => "^",
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32 operator::BitAnd => "&",
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33 operator::FloorDiv => "//",
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34 }
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35 }
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36 }
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37
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38 impl unaryop {
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39 fn to_string(&self) -> &'static str {
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40 match *self {
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41 unaryop::Invert => "~",
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42 unaryop::Not => "not ",
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43 unaryop::UAdd => "+",
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44 unaryop::USub => "-"
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45 }
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46 }
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47 }
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48
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49 impl cmpop {
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50 fn to_string(&self) -> &'static str {
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51 match *self {
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52 cmpop::Eq => "==",
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53 cmpop::NotEq => "!=",
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54 cmpop::Lt => "<",
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55 cmpop::LtE => "<=",
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56 cmpop::Gt => ">",
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57 cmpop::GtE => ">=",
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58 cmpop::Is => "is",
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59 cmpop::IsNot => "is not",
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60 cmpop::In => "in",
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61 cmpop::NotIn => "not in",
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62 }
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63 }
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64 }
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65
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66 impl ToStringable for withitem {
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67 fn to_string(&self) -> String {
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68 match self.optional_vars {
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69 None => format!("{}", self.context_expr.to_string()),
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70 Some(ref optional_var) => format!("{} as {}", self.context_expr.to_string(), optional_var.to_string())
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71 }
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72 }
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73 }
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74
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75 fn vec_to_strings_vec<T: ToStringable>(values: Vec<T>) -> Vec<String> {
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76 let mut vector = vec!();
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77 for value in values {
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78 vector.push(value.to_string());
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79 }
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80 vector
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81 }
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82
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83 impl ToStringable for keyword {
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84 fn to_string(&self) -> String {
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85 match self.arg.clone() {
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86 Some(arg) => format!("{}={}", arg, self.value.to_string()),
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87 None => format!("**{}", self.value.to_string())
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88 }
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89 }
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90 }
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91
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92 fn statements_to_string(indent: usize, body: Vec<stmt>) -> String {
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93 let mut statements = vec!();
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94 for statement in body {
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95 statements.push(statement.to_string(indent + 1));
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96 }
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97 statements.join("\n")
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98 }
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99
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100 fn if_else_statements_to_string(indent: usize, body: Vec<stmt>, orelse: Vec<stmt>) -> String {
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101 let body = statements_to_string(indent, body);
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102 if orelse.is_empty() {
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103 body
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104 } else {
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105 format!("{}\n{}else:\n{}", body, make_indent(indent), statements_to_string(indent, orelse))
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106 }
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107 }
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108
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109 impl ToStringable for comprehension {
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110 fn to_string(&self) -> String {
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111 let mut result = vec!();
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112 result.push(format!("for {} in {}", self.target.to_string(), self.iter.to_string()));
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113 for if_ in self.ifs.clone() {
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114 result.push(format!("if {}", if_.to_string()))
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115 }
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116 result.join(" ")
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117 }
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118 }
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119
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120 impl ToStringable for slice {
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121 fn to_string(&self) -> String {
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122 match *self {
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123 slice::Index(ref value) => value.to_string(),
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124 slice::Slice(ref lower, ref upper, ref step) => {
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125 format!("{}{}{}",
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126 match *lower {
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127 None => String::new(),
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128 Some(ref lower) => lower.to_string()
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129 },
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130 match *upper {
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131 None => String::new(),
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diff changeset
132 Some(ref upper) => format!(":{}", upper.to_string())
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parents: 81
diff changeset
133 },
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parents: 81
diff changeset
134 match *step {
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parents: 81
diff changeset
135 None => String::new(),
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parents: 81
diff changeset
136 Some(ref step) => format!(":{}", step.to_string())
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parents: 81
diff changeset
137 },
2d906d1cb940 Add ast.Subscript.
Bastien Orivel <eijebong@bananium.fr>
parents: 81
diff changeset
138 )
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Bastien Orivel <eijebong@bananium.fr>
parents: 81
diff changeset
139 },
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Bastien Orivel <eijebong@bananium.fr>
parents: 81
diff changeset
140 slice::ExtSlice(ref dims) => {
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Bastien Orivel <eijebong@bananium.fr>
parents: 81
diff changeset
141 let mut dims_ = vec!();
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Bastien Orivel <eijebong@bananium.fr>
parents: 81
diff changeset
142 for dim in dims {
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Bastien Orivel <eijebong@bananium.fr>
parents: 81
diff changeset
143 dims_.push(dim.to_string());
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Bastien Orivel <eijebong@bananium.fr>
parents: 81
diff changeset
144 }
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Bastien Orivel <eijebong@bananium.fr>
parents: 81
diff changeset
145 dims_.join(", ")
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Bastien Orivel <eijebong@bananium.fr>
parents: 81
diff changeset
146 }
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Bastien Orivel <eijebong@bananium.fr>
parents: 81
diff changeset
147 }
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Bastien Orivel <eijebong@bananium.fr>
parents: 81
diff changeset
148 }
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Bastien Orivel <eijebong@bananium.fr>
parents: 81
diff changeset
149 }
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Bastien Orivel <eijebong@bananium.fr>
parents: 81
diff changeset
150
68
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Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
151 impl excepthandler {
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Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
152 fn to_string(self, indent: usize) -> String {
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Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
153 let current_indent = make_indent(indent);
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parents: 67
diff changeset
154 format!("{}except {}{}:\n{}",
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Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
155 current_indent,
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Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
156 match self.type_ {
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Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
157 None => String::new(),
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Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
158 Some(ref type_) => type_.to_string()
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Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
159 },
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Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
160 match self.name {
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parents: 67
diff changeset
161 None => String::new(),
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Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
162 Some(ref name) => format!(" as {}", name)
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Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
163 },
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Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
164 statements_to_string(indent, self.body)
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parents: 67
diff changeset
165 )
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parents: 67
diff changeset
166 }
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Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
167 }
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Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
168
89
898876834564 Rename trait to respect CamelCase conventions.
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169 impl ToStringable for expr {
0
211b0df72e64 Hello world!
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170 fn to_string(&self) -> String {
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parents:
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171 match self.clone() {
19
0cb53a31ac12 Implement ast.BoolOp, and improve its display.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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diff changeset
172 expr::BoolOp(op, values) => {
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 17
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173 let mut data = vec!();
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parents: 17
diff changeset
174 for value in values {
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parents: 17
diff changeset
175 data.push(value.to_string());
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parents: 17
diff changeset
176 }
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parents: 17
diff changeset
177 data.join(op.to_string())
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parents: 17
diff changeset
178 },
13
38b0d63697b1 Import the full AST grammar from CPython 3.5.
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diff changeset
179 expr::BinOp(a, op, b) => format!("{} {} {}", a.to_string(), op.to_string(), b.to_string()),
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parents: 8
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180 expr::UnaryOp(op, operand) => format!("{}{}", op.to_string(), operand.to_string()),
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parents: 8
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181
38b0d63697b1 Import the full AST grammar from CPython 3.5.
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parents: 8
diff changeset
182 expr::Compare(left, ops, comparators) => format!("{} {}", left.to_string(), {
0
211b0df72e64 Hello world!
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parents:
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183 let mut arguments = vec!();
85
09f5e0d7bcf3 Fix chained Compare dumping.
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diff changeset
184 for (op, comparator) in ops.iter().zip(comparators.iter()) {
0
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185 arguments.push(format!("{} {}", op.to_string(), comparator.to_string()))
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parents:
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186 }
211b0df72e64 Hello world!
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parents:
diff changeset
187 arguments.join(" ")
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
188 }),
53
1a815946c2e5 Implement keywords in expr::Call, and add some tests.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 52
diff changeset
189 expr::Call(func, args, keywords) => format!("{}({})", func.to_string(), {
1a815946c2e5 Implement keywords in expr::Call, and add some tests.
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parents: 52
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190 let mut arguments = vec!();
54
ad2453a55820 Refactor all Vec<T> -> Vec<String> functions into a single one.
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parents: 53
diff changeset
191 let args = vec_to_strings_vec(args);
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parents: 53
diff changeset
192 let keywords = vec_to_strings_vec(keywords);
53
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parents: 52
diff changeset
193 arguments.extend(args);
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diff changeset
194 arguments.extend(keywords);
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diff changeset
195 arguments.join(", ")
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diff changeset
196 }),
13
38b0d63697b1 Import the full AST grammar from CPython 3.5.
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parents: 8
diff changeset
197 expr::Num(n) => format!("{}", n),
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parents: 8
diff changeset
198 expr::Str(s) => format!("\"{}\"", s),
91
859d44f143b8 Implement Bytes in the AST.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 89
diff changeset
199 expr::Bytes(s) => format!("b\"{}\"", {
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parents: 89
diff changeset
200 let mut string = String::with_capacity(s.len());
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parents: 89
diff changeset
201 for ascii_code in s {
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 89
diff changeset
202 let c = ascii_code as char;
859d44f143b8 Implement Bytes in the AST.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 89
diff changeset
203 if c >= ' ' && c <= '~' {
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 89
diff changeset
204 if c == '"' || c == '\\' {
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 89
diff changeset
205 string.push('\\');
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 89
diff changeset
206 }
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 89
diff changeset
207 string.push(c);
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 89
diff changeset
208 } else if c == '\t' {
859d44f143b8 Implement Bytes in the AST.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 89
diff changeset
209 string.push_str("\\t");
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 89
diff changeset
210 } else if c == '\n' {
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 89
diff changeset
211 string.push_str("\\n");
859d44f143b8 Implement Bytes in the AST.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 89
diff changeset
212 } else if c == '\r' {
859d44f143b8 Implement Bytes in the AST.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 89
diff changeset
213 string.push_str("\\r");
859d44f143b8 Implement Bytes in the AST.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 89
diff changeset
214 } else /* if c > '~' */ {
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 89
diff changeset
215 let value = format!("\\x{:02x}", ascii_code);
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 89
diff changeset
216 string.push_str(value.as_str());
859d44f143b8 Implement Bytes in the AST.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 89
diff changeset
217 }
859d44f143b8 Implement Bytes in the AST.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 89
diff changeset
218 }
859d44f143b8 Implement Bytes in the AST.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 89
diff changeset
219 string
859d44f143b8 Implement Bytes in the AST.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 89
diff changeset
220 }),
86
a7b1db623f41 Implement NameConstant correctly.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 85
diff changeset
221 expr::NameConstant(constant) => match constant {
a7b1db623f41 Implement NameConstant correctly.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 85
diff changeset
222 name_constant::True => String::from("True"),
a7b1db623f41 Implement NameConstant correctly.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 85
diff changeset
223 name_constant::False => String::from("False"),
a7b1db623f41 Implement NameConstant correctly.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 85
diff changeset
224 name_constant::None_ => String::from("None")
a7b1db623f41 Implement NameConstant correctly.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 85
diff changeset
225 },
62
d255a932553f Fix a few warnings.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 60
diff changeset
226 expr::Attribute(value, attr, _) => format!("{}.{}", value.to_string(), attr),
d255a932553f Fix a few warnings.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 60
diff changeset
227 expr::Name(name, _) => format!("{}", name),
d255a932553f Fix a few warnings.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 60
diff changeset
228 expr::List(elts, _) => format!("[{}]", vec_to_strings_vec(elts).join(", ")),
55
32c78b275d5a Implement comprehension’s to_string.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 54
diff changeset
229 expr::ListComp(elt, generators) => format!("[{} {}]", elt.to_string(), vec_to_strings_vec(generators).join(" ")),
32c78b275d5a Implement comprehension’s to_string.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 54
diff changeset
230 expr::DictComp(key, value, generators) => format!("{{{}: {} {}}}", key.to_string(), value.to_string(), vec_to_strings_vec(generators).join(" ")),
62
d255a932553f Fix a few warnings.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 60
diff changeset
231 expr::Tuple(elts, _) => format!("({})", vec_to_strings_vec(elts).join(", ")),
52
d9838e8b3ec5 Add ast.Ellipsis.
Bastien Orivel <eijebong@bananium.fr>
parents: 51
diff changeset
232 expr::Ellipsis => format!("..."),
73
2a6629ea82b5 Add ast.Await.
Bastien Orivel <eijebong@bananium.fr>
parents: 72
diff changeset
233 expr::Await(value) => format!("await {}", value.to_string()),
74
97537c90d92d Add ast.Yield.
Bastien Orivel <eijebong@bananium.fr>
parents: 73
diff changeset
234 expr::Yield(value) => {
97537c90d92d Add ast.Yield.
Bastien Orivel <eijebong@bananium.fr>
parents: 73
diff changeset
235 match *value {
97537c90d92d Add ast.Yield.
Bastien Orivel <eijebong@bananium.fr>
parents: 73
diff changeset
236 None => String::from("yield"),
97537c90d92d Add ast.Yield.
Bastien Orivel <eijebong@bananium.fr>
parents: 73
diff changeset
237 Some(value) => format!("yield {}", value.to_string())
97537c90d92d Add ast.Yield.
Bastien Orivel <eijebong@bananium.fr>
parents: 73
diff changeset
238 }
97537c90d92d Add ast.Yield.
Bastien Orivel <eijebong@bananium.fr>
parents: 73
diff changeset
239 },
75
1abc8ca9f30b Add ast.YieldFrom.
Bastien Orivel <eijebong@bananium.fr>
parents: 74
diff changeset
240 expr::YieldFrom(value) => format!("yield from {}", value.to_string()),
76
efd42fc280e8 Add ast.Set.
Bastien Orivel <eijebong@bananium.fr>
parents: 75
diff changeset
241 expr::Set(elts) => format!("{{{}}}", vec_to_strings_vec(elts).join(", ")),
77
7d1406181aae Add ast.SetComp.
Bastien Orivel <eijebong@bananium.fr>
parents: 76
diff changeset
242 expr::SetComp(elt, generators) => format!("{{{} {}}}", elt.to_string(), vec_to_strings_vec(generators).join(" ")),
78
f1a845e4121b Add ast.GeneratorExp.
Bastien Orivel <eijebong@bananium.fr>
parents: 77
diff changeset
243 expr::GeneratorExp(elt, generators) => format!("({} {})", elt.to_string(), vec_to_strings_vec(generators).join(" ")),
79
6bf54bff8dbd Add ast.Lambda.
Bastien Orivel <eijebong@bananium.fr>
parents: 78
diff changeset
244 expr::Lambda(args, body) => format!("lambda {}: {}", args.to_string(), body.to_string()),
80
c6d3f0dabbba Add ast.IfExp.
Bastien Orivel <eijebong@bananium.fr>
parents: 79
diff changeset
245 expr::IfExp(test, body, orelse) => format!("{} if {} else {}", body.to_string(), test.to_string(), orelse.to_string()),
81
dc82a0d8f144 Add ast.Dict.
Bastien Orivel <eijebong@bananium.fr>
parents: 80
diff changeset
246 expr::Dict(keys, values) => {
dc82a0d8f144 Add ast.Dict.
Bastien Orivel <eijebong@bananium.fr>
parents: 80
diff changeset
247 format!("{{{}}}",
dc82a0d8f144 Add ast.Dict.
Bastien Orivel <eijebong@bananium.fr>
parents: 80
diff changeset
248 {
dc82a0d8f144 Add ast.Dict.
Bastien Orivel <eijebong@bananium.fr>
parents: 80
diff changeset
249 let mut items = vec!();
dc82a0d8f144 Add ast.Dict.
Bastien Orivel <eijebong@bananium.fr>
parents: 80
diff changeset
250 for (key, value) in keys.iter().zip(values.iter()) {
dc82a0d8f144 Add ast.Dict.
Bastien Orivel <eijebong@bananium.fr>
parents: 80
diff changeset
251 let item = match *key {
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Bastien Orivel <eijebong@bananium.fr>
parents: 80
diff changeset
252 None => format!("**{}", value.to_string()),
dc82a0d8f144 Add ast.Dict.
Bastien Orivel <eijebong@bananium.fr>
parents: 80
diff changeset
253 Some(ref key) => format!("{}: {}", key.to_string(), value.to_string()),
dc82a0d8f144 Add ast.Dict.
Bastien Orivel <eijebong@bananium.fr>
parents: 80
diff changeset
254 };
dc82a0d8f144 Add ast.Dict.
Bastien Orivel <eijebong@bananium.fr>
parents: 80
diff changeset
255 items.push(item);
dc82a0d8f144 Add ast.Dict.
Bastien Orivel <eijebong@bananium.fr>
parents: 80
diff changeset
256 }
dc82a0d8f144 Add ast.Dict.
Bastien Orivel <eijebong@bananium.fr>
parents: 80
diff changeset
257 items.join(", ")
dc82a0d8f144 Add ast.Dict.
Bastien Orivel <eijebong@bananium.fr>
parents: 80
diff changeset
258 }
dc82a0d8f144 Add ast.Dict.
Bastien Orivel <eijebong@bananium.fr>
parents: 80
diff changeset
259 )
dc82a0d8f144 Add ast.Dict.
Bastien Orivel <eijebong@bananium.fr>
parents: 80
diff changeset
260 },
82
2d906d1cb940 Add ast.Subscript.
Bastien Orivel <eijebong@bananium.fr>
parents: 81
diff changeset
261 expr::Subscript(value, slice, _) => format!("{}[{}]", value.to_string(), slice.to_string()),
83
e59cd5754268 Add ast.Starred.
Bastien Orivel <eijebong@bananium.fr>
parents: 82
diff changeset
262 expr::Starred(value, _) => format!("*{}", value.to_string()),
0
211b0df72e64 Hello world!
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
263 }
211b0df72e64 Hello world!
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
264 }
211b0df72e64 Hello world!
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
265 }
211b0df72e64 Hello world!
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
266
89
898876834564 Rename trait to respect CamelCase conventions.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 86
diff changeset
267 impl ToStringable for arg {
56
c3cc16b933d2 Implement function arguments of all kinds.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 55
diff changeset
268 fn to_string(&self) -> String {
c3cc16b933d2 Implement function arguments of all kinds.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 55
diff changeset
269 match self.annotation {
c3cc16b933d2 Implement function arguments of all kinds.
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270 None => self.arg.clone(),
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271 Some(ref annotation) => format!("{}: {}", self.arg, annotation.to_string())
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272 }
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273 }
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274 }
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275
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276 impl ToStringable for arguments {
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277 fn to_string(&self) -> String {
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278 let mut args = vec!();
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279 let num_args = self.args.len();
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280 let num_defaults = self.defaults.len();
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281
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282 let mut normal_args = self.args.clone();
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283 let defaulted_args = normal_args.split_off(num_args - num_defaults);
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284 for arg in normal_args {
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285 args.push(arg.to_string());
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286 }
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287 for (arg, default) in defaulted_args.iter().zip(self.defaults.iter()) {
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288 args.push(format!("{}={}", arg.to_string(), default.to_string()));
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289 }
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290
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291 if !self.kwonlyargs.is_empty() {
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292 match self.vararg {
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293 None => args.push("*".to_string()),
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294 Some(ref vararg) => args.push(format!("*{}", vararg.to_string())),
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295 }
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296 }
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297 for (arg, default) in self.kwonlyargs.iter().zip(self.kw_defaults.iter()) {
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298 let arg = arg.to_string();
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299 match *default {
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300 Some(ref default) => args.push(format!("{}={}", arg, default.to_string())),
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301 None => args.push(arg)
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302 }
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303 }
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304 match self.kwarg {
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305 Some(ref kwarg) => args.push(format!("**{}", kwarg.to_string())),
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306 None => ()
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307 }
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308 args.join(", ")
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309 }
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310 }
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311
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312 fn make_indent(indent: usize) -> String {
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313 iter::repeat(" ").take(indent).collect()
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314 }
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315
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316 fn decorator_list_to_string(decorator_list: Vec<expr>, indent: usize) -> String {
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317 let current_indent = make_indent(indent);
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318 let decorators = vec_to_strings_vec(decorator_list);
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319 if decorators.is_empty() {
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320 String::new()
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321 } else {
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322 format!("{}@{}\n",
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323 current_indent,
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324 decorators.join(format!("\n{}@", current_indent).as_str())
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325 )
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326 }
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327 }
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328
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329 impl stmt {
0
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330 fn to_string(&self, indent: usize) -> String {
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331 let current_indent = make_indent(indent);
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332 match self.clone() {
65
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333 stmt::ClassDef(name, bases, keywords, body, decorator_list) => {
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334 format!("{}{}class {}({}):\n{}",
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335 decorator_list_to_string(decorator_list, indent),
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336 current_indent,
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337 name,
67
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338 {
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339 let mut arguments = vec!();
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340 let bases = vec_to_strings_vec(bases);
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341 let keywords = vec_to_strings_vec(keywords);
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342 arguments.extend(bases);
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343 arguments.extend(keywords);
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344 arguments.join(", ")
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345 },
65
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346 statements_to_string(indent, body)
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347 )
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348 },
69
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349 stmt::FunctionDef(name, arguments, body, decorator_list, returns, async) => {
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350 format!("{}{}{}def {}({}){}:\n{}",
65
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351 decorator_list_to_string(decorator_list, indent),
69
a73eaf42bea1 Add ast.AsyncDefFunction.
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352 if async { "async " } else { "" },
63
5df52b40fe54 Implement FunctionDef.returns.
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353 current_indent,
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354 name,
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355 arguments.to_string(),
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356 match returns {
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357 None => String::new(),
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358 Some(returns) => format!(" -> {}", returns.to_string())
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diff changeset
359 },
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diff changeset
360 statements_to_string(indent, body)
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diff changeset
361 )
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362 }
13
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diff changeset
363 stmt::Global(names) => format!("{}global {}", current_indent, names.join(", ")),
51
ded1907b7a69 Add ast.Nonlocal.
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diff changeset
364 stmt::Nonlocal(names) => format!("{}nonlocal {}", current_indent, names.join(", ")),
13
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diff changeset
365 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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diff changeset
366 stmt::While(test, body, orelse) => format!("{}while {}:\n{}", current_indent, test.to_string(), if_else_statements_to_string(indent, body, orelse)),
71
2c1e2ce41263 Add ast.AsyncFor.
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diff changeset
367 stmt::For(target, iter, body, orelse, async) => {
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parents: 69
diff changeset
368 format!("{}{}for {} in {}:\n{}",
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diff changeset
369 current_indent,
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diff changeset
370 if async { "async " } else { "" },
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parents: 69
diff changeset
371 target.to_string(),
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diff changeset
372 iter.to_string(),
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diff changeset
373 if_else_statements_to_string(indent, body, orelse)
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parents: 69
diff changeset
374 )
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diff changeset
375 },
92
7977a52c3202 Fix chained assigns.
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diff changeset
376 stmt::Assign(targets, value) => format!("{}{} = {}", current_indent, vec_to_strings_vec(targets).join(" = "), value.to_string()),
13
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diff changeset
377 stmt::AugAssign(target, op, value) => format!("{}{} {}= {}", current_indent, target.to_string(), op.to_string(), value.to_string()),
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diff changeset
378 stmt::Return(expr) => format!("{}return{}", current_indent, match expr {
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diff changeset
379 Some(expr) => format!(" {}", expr.to_string()),
58
a0b23123901b Replace "".to_string() and format!("") by String::new().
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parents: 57
diff changeset
380 None => String::new()
0
211b0df72e64 Hello world!
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diff changeset
381 }),
48
039f85b187f2 Also handle relative imports.
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diff changeset
382 stmt::ImportFrom(module, names, level) => {
039f85b187f2 Also handle relative imports.
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diff changeset
383 format!("{}from {}{} import {}",
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diff changeset
384 current_indent,
66
32550e12aedf Simplify some expressions in ast_dump.
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diff changeset
385 match level {
32550e12aedf Simplify some expressions in ast_dump.
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diff changeset
386 None => String::new(),
32550e12aedf Simplify some expressions in ast_dump.
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diff changeset
387 Some(level) => iter::repeat(".").take(level).collect()
48
039f85b187f2 Also handle relative imports.
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diff changeset
388 },
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diff changeset
389 module.to_string(),
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diff changeset
390 {
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diff changeset
391 let mut names_ = vec!();
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diff changeset
392 for name in names {
66
32550e12aedf Simplify some expressions in ast_dump.
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diff changeset
393 names_.push(
32550e12aedf Simplify some expressions in ast_dump.
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diff changeset
394 match name.asname {
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diff changeset
395 None => name.name,
32550e12aedf Simplify some expressions in ast_dump.
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diff changeset
396 Some(asname) => format!("{} as {}", name.name, asname)
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parents: 65
diff changeset
397 }
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diff changeset
398 )
48
039f85b187f2 Also handle relative imports.
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diff changeset
399 }
039f85b187f2 Also handle relative imports.
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parents: 47
diff changeset
400 names_.join(", ")
44
5f1d285471af Finish ImportFrom conversion and add a test for it.
Bastien Orivel <eijebong@bananium.fr>
parents: 38
diff changeset
401 }
48
039f85b187f2 Also handle relative imports.
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parents: 47
diff changeset
402 )
039f85b187f2 Also handle relative imports.
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parents: 47
diff changeset
403 },
47
38f59b0efc2c Handle Import and add a test for it.
Bastien Orivel <eijebong@bananium.fr>
parents: 44
diff changeset
404 stmt::Import(names) => format!("{}import {}", current_indent, {
38f59b0efc2c Handle Import and add a test for it.
Bastien Orivel <eijebong@bananium.fr>
parents: 44
diff changeset
405 let mut names_ = vec!();
38f59b0efc2c Handle Import and add a test for it.
Bastien Orivel <eijebong@bananium.fr>
parents: 44
diff changeset
406 for name in names {
66
32550e12aedf Simplify some expressions in ast_dump.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 65
diff changeset
407 names_.push(
32550e12aedf Simplify some expressions in ast_dump.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 65
diff changeset
408 match name.asname {
32550e12aedf Simplify some expressions in ast_dump.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 65
diff changeset
409 None => name.name,
32550e12aedf Simplify some expressions in ast_dump.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 65
diff changeset
410 Some(asname) => format!("{} as {}", name.name, asname)
32550e12aedf Simplify some expressions in ast_dump.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 65
diff changeset
411 }
32550e12aedf Simplify some expressions in ast_dump.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 65
diff changeset
412 )
47
38f59b0efc2c Handle Import and add a test for it.
Bastien Orivel <eijebong@bananium.fr>
parents: 44
diff changeset
413 }
38f59b0efc2c Handle Import and add a test for it.
Bastien Orivel <eijebong@bananium.fr>
parents: 44
diff changeset
414 names_.join(", ")
38f59b0efc2c Handle Import and add a test for it.
Bastien Orivel <eijebong@bananium.fr>
parents: 44
diff changeset
415 }),
13
38b0d63697b1 Import the full AST grammar from CPython 3.5.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 8
diff changeset
416 stmt::Expr(expr) => format!("{}{}", current_indent, expr.to_string()),
21
7af637f444d1 Add ast.Delete
Bastien Orivel <eijebong@bananium.fr>
parents: 19
diff changeset
417 stmt::Break => format!("{}break", current_indent),
54
ad2453a55820 Refactor all Vec<T> -> Vec<String> functions into a single one.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 53
diff changeset
418 stmt::Delete(targets) => format!("{}del {}", current_indent, vec_to_strings_vec(targets).join(", ")),
50
5edbc24b625f Add ast.Continue.
Bastien Orivel <eijebong@bananium.fr>
parents: 49
diff changeset
419 stmt::Pass => format!("{}pass", current_indent),
57
e5a808ec31c0 Add ast.Assert.
Bastien Orivel <eijebong@bananium.fr>
parents: 56
diff changeset
420 stmt::Continue => format!("{}continue", current_indent),
e5a808ec31c0 Add ast.Assert.
Bastien Orivel <eijebong@bananium.fr>
parents: 56
diff changeset
421 stmt::Assert(test, msg) => {
e5a808ec31c0 Add ast.Assert.
Bastien Orivel <eijebong@bananium.fr>
parents: 56
diff changeset
422 format!("{}assert {}{}",
e5a808ec31c0 Add ast.Assert.
Bastien Orivel <eijebong@bananium.fr>
parents: 56
diff changeset
423 current_indent,
e5a808ec31c0 Add ast.Assert.
Bastien Orivel <eijebong@bananium.fr>
parents: 56
diff changeset
424 test.to_string(),
66
32550e12aedf Simplify some expressions in ast_dump.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 65
diff changeset
425 match msg {
32550e12aedf Simplify some expressions in ast_dump.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 65
diff changeset
426 None => String::new(),
32550e12aedf Simplify some expressions in ast_dump.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 65
diff changeset
427 Some(msg) => format!(", {}", msg.to_string())
57
e5a808ec31c0 Add ast.Assert.
Bastien Orivel <eijebong@bananium.fr>
parents: 56
diff changeset
428 }
e5a808ec31c0 Add ast.Assert.
Bastien Orivel <eijebong@bananium.fr>
parents: 56
diff changeset
429 )
59
407b3b217928 Add ast.With.
Bastien Orivel <eijebong@bananium.fr>
parents: 58
diff changeset
430 },
72
7ac23f4336b1 Add ast.AsyncWith.
Bastien Orivel <eijebong@bananium.fr>
parents: 71
diff changeset
431 stmt::With(items, body, async) => {
7ac23f4336b1 Add ast.AsyncWith.
Bastien Orivel <eijebong@bananium.fr>
parents: 71
diff changeset
432 format!("{}{}with {}:\n{}",
59
407b3b217928 Add ast.With.
Bastien Orivel <eijebong@bananium.fr>
parents: 58
diff changeset
433 current_indent,
72
7ac23f4336b1 Add ast.AsyncWith.
Bastien Orivel <eijebong@bananium.fr>
parents: 71
diff changeset
434 if async { "async " } else { "" },
66
32550e12aedf Simplify some expressions in ast_dump.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 65
diff changeset
435 vec_to_strings_vec(items).join(", "),
59
407b3b217928 Add ast.With.
Bastien Orivel <eijebong@bananium.fr>
parents: 58
diff changeset
436 statements_to_string(indent, body)
407b3b217928 Add ast.With.
Bastien Orivel <eijebong@bananium.fr>
parents: 58
diff changeset
437 )
60
9f0f457a67f6 Add ast.Raise.
Bastien Orivel <eijebong@bananium.fr>
parents: 59
diff changeset
438 },
9f0f457a67f6 Add ast.Raise.
Bastien Orivel <eijebong@bananium.fr>
parents: 59
diff changeset
439 stmt::Raise(exc, cause) => {
9f0f457a67f6 Add ast.Raise.
Bastien Orivel <eijebong@bananium.fr>
parents: 59
diff changeset
440 format!("{}raise{}{}",
9f0f457a67f6 Add ast.Raise.
Bastien Orivel <eijebong@bananium.fr>
parents: 59
diff changeset
441 current_indent,
9f0f457a67f6 Add ast.Raise.
Bastien Orivel <eijebong@bananium.fr>
parents: 59
diff changeset
442 match exc {
9f0f457a67f6 Add ast.Raise.
Bastien Orivel <eijebong@bananium.fr>
parents: 59
diff changeset
443 None => String::new(),
9f0f457a67f6 Add ast.Raise.
Bastien Orivel <eijebong@bananium.fr>
parents: 59
diff changeset
444 Some(ref exc) => format!(" {}", exc.to_string())
9f0f457a67f6 Add ast.Raise.
Bastien Orivel <eijebong@bananium.fr>
parents: 59
diff changeset
445 },
9f0f457a67f6 Add ast.Raise.
Bastien Orivel <eijebong@bananium.fr>
parents: 59
diff changeset
446 match cause {
9f0f457a67f6 Add ast.Raise.
Bastien Orivel <eijebong@bananium.fr>
parents: 59
diff changeset
447 None => String::new(),
9f0f457a67f6 Add ast.Raise.
Bastien Orivel <eijebong@bananium.fr>
parents: 59
diff changeset
448 Some(ref cause) => format!(" from {}", cause.to_string())
9f0f457a67f6 Add ast.Raise.
Bastien Orivel <eijebong@bananium.fr>
parents: 59
diff changeset
449 }
9f0f457a67f6 Add ast.Raise.
Bastien Orivel <eijebong@bananium.fr>
parents: 59
diff changeset
450 )
68
c59ad5ccd8a6 Add ast.Try
Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
451 },
c59ad5ccd8a6 Add ast.Try
Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
452 stmt::Try(body, excepthandlers, orelse, finalbody) => {
c59ad5ccd8a6 Add ast.Try
Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
453 format!("{}try:\n{}\n{}{}\n{}",
c59ad5ccd8a6 Add ast.Try
Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
454 current_indent,
c59ad5ccd8a6 Add ast.Try
Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
455 statements_to_string(indent, body),
c59ad5ccd8a6 Add ast.Try
Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
456 {
c59ad5ccd8a6 Add ast.Try
Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
457 let mut excepthandlers_ = vec!();
c59ad5ccd8a6 Add ast.Try
Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
458 for excepthandler in excepthandlers {
c59ad5ccd8a6 Add ast.Try
Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
459 let excepthandler = excepthandler.to_string(indent);
c59ad5ccd8a6 Add ast.Try
Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
460 excepthandlers_.push(excepthandler);
c59ad5ccd8a6 Add ast.Try
Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
461 }
c59ad5ccd8a6 Add ast.Try
Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
462 excepthandlers_.join("\n")
c59ad5ccd8a6 Add ast.Try
Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
463 },
c59ad5ccd8a6 Add ast.Try
Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
464 if !orelse.is_empty() {
c59ad5ccd8a6 Add ast.Try
Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
465 format!("{}else:\n{}", current_indent, statements_to_string(indent, orelse))
c59ad5ccd8a6 Add ast.Try
Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
466 } else {
c59ad5ccd8a6 Add ast.Try
Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
467 String::new()
c59ad5ccd8a6 Add ast.Try
Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
468 },
c59ad5ccd8a6 Add ast.Try
Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
469 if !finalbody.is_empty() {
c59ad5ccd8a6 Add ast.Try
Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
470 format!("{}finally:\n{}", current_indent, statements_to_string(indent, finalbody))
c59ad5ccd8a6 Add ast.Try
Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
471 } else {
84
ff6b1aeb544a Fix indentation whoopsie introduced in c59ad5ccd8a6.
Bastien Orivel <eijebong@bananium.fr>
parents: 83
diff changeset
472 String::new()
68
c59ad5ccd8a6 Add ast.Try
Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
473 }
c59ad5ccd8a6 Add ast.Try
Bastien Orivel <eijebong@bananium.fr>
parents: 67
diff changeset
474 )
57
e5a808ec31c0 Add ast.Assert.
Bastien Orivel <eijebong@bananium.fr>
parents: 56
diff changeset
475 }
0
211b0df72e64 Hello world!
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
476 }
211b0df72e64 Hello world!
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
477 }
211b0df72e64 Hello world!
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
478 }
211b0df72e64 Hello world!
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
479
211b0df72e64 Hello world!
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
480 #[allow(dead_code)]
22
25b202005d1d Return a String from ast_dump instead of printing it directly.
Bastien Orivel <eijebong@bananium.fr>
parents: 21
diff changeset
481 pub fn dump_ast(ast: &Module) -> String {
25b202005d1d Return a String from ast_dump instead of printing it directly.
Bastien Orivel <eijebong@bananium.fr>
parents: 21
diff changeset
482 let mut dumped_statements = vec!();
0
211b0df72e64 Hello world!
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
483 for statement in &ast.statements {
22
25b202005d1d Return a String from ast_dump instead of printing it directly.
Bastien Orivel <eijebong@bananium.fr>
parents: 21
diff changeset
484 let dumped_statement = statement.to_string(0);
25b202005d1d Return a String from ast_dump instead of printing it directly.
Bastien Orivel <eijebong@bananium.fr>
parents: 21
diff changeset
485 dumped_statements.push(dumped_statement);
0
211b0df72e64 Hello world!
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
486 }
22
25b202005d1d Return a String from ast_dump instead of printing it directly.
Bastien Orivel <eijebong@bananium.fr>
parents: 21
diff changeset
487 dumped_statements.join("\n")
0
211b0df72e64 Hello world!
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
488 }
22
25b202005d1d Return a String from ast_dump instead of printing it directly.
Bastien Orivel <eijebong@bananium.fr>
parents: 21
diff changeset
489