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1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "tools/gn/value.h" | 5 #include "tools/gn/value.h" |
6 | 6 |
7 #include "base/strings/string_number_conversions.h" | 7 #include "base/strings/string_number_conversions.h" |
8 #include "base/strings/string_util.h" | 8 #include "base/strings/string_util.h" |
9 #include "tools/gn/scope.h" | 9 #include "tools/gn/scope.h" |
10 | 10 |
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117 std::string Value::ToString(bool quote_string) const { | 117 std::string Value::ToString(bool quote_string) const { |
118 switch (type_) { | 118 switch (type_) { |
119 case NONE: | 119 case NONE: |
120 return "<void>"; | 120 return "<void>"; |
121 case BOOLEAN: | 121 case BOOLEAN: |
122 return boolean_value_ ? "true" : "false"; | 122 return boolean_value_ ? "true" : "false"; |
123 case INTEGER: | 123 case INTEGER: |
124 return base::Int64ToString(int_value_); | 124 return base::Int64ToString(int_value_); |
125 case STRING: | 125 case STRING: |
126 if (quote_string) { | 126 if (quote_string) { |
127 std::string result = "\""; | 127 std::string escaped = string_value_; |
128 bool hanging_backslash = false; | 128 // First escape all special uses of a backslash. |
129 for (char ch : string_value_) { | 129 ReplaceSubstringsAfterOffset(&escaped, 0, "\\$", "\\\\$"); |
130 // If the last character was a literal backslash and the next | 130 ReplaceSubstringsAfterOffset(&escaped, 0, "\\\"", "\\\\\""); |
131 // character could form a valid escape sequence, we need to insert | 131 |
132 // an extra backslash to prevent that. | 132 // Now escape special chars. |
133 if (hanging_backslash && (ch == '$' || ch == '"' || ch == '\\')) | 133 ReplaceSubstringsAfterOffset(&escaped, 0, "$", "\\$"); |
134 result += '\\'; | 134 ReplaceSubstringsAfterOffset(&escaped, 0, "\"", "\\\""); |
135 // If the next character is a dollar sign or double quote, it needs | 135 return "\"" + escaped + "\""; |
136 // to be escaped; otherwise it can be printed as is. | |
137 if (ch == '$' || ch == '"') | |
138 result += '\\'; | |
139 result += ch; | |
140 hanging_backslash = (ch == '\\'); | |
141 } | |
142 // Again, we need to prevent the closing double quotes from becoming | |
143 // an escape sequence. | |
144 if (hanging_backslash) | |
145 result += '\\'; | |
146 result += '"'; | |
147 return result; | |
148 } | 136 } |
149 return string_value_; | 137 return string_value_; |
150 case LIST: { | 138 case LIST: { |
151 std::string result = "["; | 139 std::string result = "["; |
152 for (size_t i = 0; i < list_value_.size(); i++) { | 140 for (size_t i = 0; i < list_value_.size(); i++) { |
153 if (i > 0) | 141 if (i > 0) |
154 result += ", "; | 142 result += ", "; |
155 result += list_value_[i].ToString(true); | 143 result += list_value_[i].ToString(true); |
156 } | 144 } |
157 result.push_back(']'); | 145 result.push_back(']'); |
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212 // iteration code. | 200 // iteration code. |
213 return false; | 201 return false; |
214 default: | 202 default: |
215 return false; | 203 return false; |
216 } | 204 } |
217 } | 205 } |
218 | 206 |
219 bool Value::operator!=(const Value& other) const { | 207 bool Value::operator!=(const Value& other) const { |
220 return !operator==(other); | 208 return !operator==(other); |
221 } | 209 } |
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