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| 1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 the V8 project authors. All rights reserved. |
| 2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
| 3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
| 4 // met: | 4 // met: |
| 5 // | 5 // |
| 6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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| 123 | 123 |
| 124 // Parse a single JSON value from input (grammar production JSONValue). | 124 // Parse a single JSON value from input (grammar production JSONValue). |
| 125 // A JSON value is either a (double-quoted) string literal, a number literal, | 125 // A JSON value is either a (double-quoted) string literal, a number literal, |
| 126 // one of "true", "false", or "null", or an object or array literal. | 126 // one of "true", "false", or "null", or an object or array literal. |
| 127 Handle<Object> ParseJsonValue(); | 127 Handle<Object> ParseJsonValue(); |
| 128 | 128 |
| 129 // Parse a JSON object literal (grammar production JSONObject). | 129 // Parse a JSON object literal (grammar production JSONObject). |
| 130 // An object literal is a squiggly-braced and comma separated sequence | 130 // An object literal is a squiggly-braced and comma separated sequence |
| 131 // (possibly empty) of key/value pairs, where the key is a JSON string | 131 // (possibly empty) of key/value pairs, where the key is a JSON string |
| 132 // literal, the value is a JSON value, and the two are separated by a colon. | 132 // literal, the value is a JSON value, and the two are separated by a colon. |
| 133 // A JSON array dosn't allow numbers and identifiers as keys, like a | 133 // A JSON array doesn't allow numbers and identifiers as keys, like a |
| 134 // JavaScript array. | 134 // JavaScript array. |
| 135 Handle<Object> ParseJsonObject(); | 135 Handle<Object> ParseJsonObject(); |
| 136 | 136 |
| 137 // Parses a JSON array literal (grammar production JSONArray). An array | 137 // Parses a JSON array literal (grammar production JSONArray). An array |
| 138 // literal is a square-bracketed and comma separated sequence (possibly empty) | 138 // literal is a square-bracketed and comma separated sequence (possibly empty) |
| 139 // of JSON values. | 139 // of JSON values. |
| 140 // A JSON array doesn't allow leaving out values from the sequence, nor does | 140 // A JSON array doesn't allow leaving out values from the sequence, nor does |
| 141 // it allow a terminal comma, like a JavaScript array does. | 141 // it allow a terminal comma, like a JavaScript array does. |
| 142 Handle<Object> ParseJsonArray(); | 142 Handle<Object> ParseJsonArray(); |
| 143 | 143 |
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| 170 source_ = source; | 170 source_ = source; |
| 171 source_length_ = source_->length(); | 171 source_length_ = source_->length(); |
| 172 | 172 |
| 173 // Optimized fast case where we only have ASCII characters. | 173 // Optimized fast case where we only have ASCII characters. |
| 174 if (seq_ascii) { | 174 if (seq_ascii) { |
| 175 seq_source_ = Handle<SeqAsciiString>::cast(source_); | 175 seq_source_ = Handle<SeqAsciiString>::cast(source_); |
| 176 } | 176 } |
| 177 | 177 |
| 178 // Set initial position right before the string. | 178 // Set initial position right before the string. |
| 179 position_ = -1; | 179 position_ = -1; |
| 180 // Advance to the first character (posibly EOS) | 180 // Advance to the first character (possibly EOS) |
| 181 AdvanceSkipWhitespace(); | 181 AdvanceSkipWhitespace(); |
| 182 Handle<Object> result = ParseJsonValue(); | 182 Handle<Object> result = ParseJsonValue(); |
| 183 if (result.is_null() || c0_ != kEndOfString) { | 183 if (result.is_null() || c0_ != kEndOfString) { |
| 184 // Parse failed. Current character is the unexpected token. | 184 // Parse failed. Current character is the unexpected token. |
| 185 | 185 |
| 186 const char* message; | 186 const char* message; |
| 187 Factory* factory = isolate()->factory(); | 187 Factory* factory = isolate()->factory(); |
| 188 Handle<JSArray> array; | 188 Handle<JSArray> array; |
| 189 | 189 |
| 190 switch (c0_) { | 190 switch (c0_) { |
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| 591 } | 591 } |
| 592 ASSERT_EQ('"', c0_); | 592 ASSERT_EQ('"', c0_); |
| 593 // Advance past the last '"'. | 593 // Advance past the last '"'. |
| 594 AdvanceSkipWhitespace(); | 594 AdvanceSkipWhitespace(); |
| 595 return result; | 595 return result; |
| 596 } | 596 } |
| 597 | 597 |
| 598 } } // namespace v8::internal | 598 } } // namespace v8::internal |
| 599 | 599 |
| 600 #endif // V8_JSON_PARSER_H_ | 600 #endif // V8_JSON_PARSER_H_ |
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