antlr4ts/misc/InterpreterDataReader.js.map

ANTLR 4 runtime for JavaScript written in Typescript

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All rights reserved.\r\n * Licensed under the BSD-3-Clause license. See LICENSE file in the project root for license information.\r\n */\r\n\r\nimport * as fs from \"fs\";\r\nimport * as util from \"util\";\r\n\r\nimport { ATN } from \"../atn/ATN\";\r\nimport { Vocabulary } from \"../Vocabulary\";\r\nimport { VocabularyImpl } from \"../VocabularyImpl\";\r\nimport { ATNDeserializer } from \"../atn/ATNDeserializer\";\r\n\r\nfunction splitToLines(buffer: Buffer): string[] {\r\n\tlet lines: string[] = [];\r\n\r\n\tlet index = 0;\r\n\twhile (index < buffer.length) {\r\n\t\tlet lineStart = index;\r\n\t\tlet lineEndLF = buffer.indexOf(\"\\n\".charCodeAt(0), index);\r\n\t\tlet lineEndCR = buffer.indexOf(\"\\r\".charCodeAt(0), index);\r\n\t\tlet lineEnd: number;\r\n\t\tif (lineEndCR >= 0 && (lineEndCR < lineEndLF || lineEndLF === -1)) {\r\n\t\t\tlineEnd = lineEndCR;\r\n\t\t} else if (lineEndLF >= 0) {\r\n\t\t\tlineEnd = lineEndLF;\r\n\t\t} else {\r\n\t\t\tlineEnd = buffer.length;\r\n\t\t}\r\n\r\n\t\tlines.push(buffer.toString(\"utf-8\", lineStart, lineEnd));\r\n\t\tif (lineEnd === lineEndCR && lineEnd + 1 === lineEndLF) {\r\n\t\t\tindex = lineEnd + 2;\r\n\t\t} else {\r\n\t\t\tindex = lineEnd + 1;\r\n\t\t}\r\n\t}\r\n\r\n\treturn lines;\r\n}\r\n\r\n// A class to read plain text interpreter data produced by ANTLR.\r\nexport namespace InterpreterDataReader {\r\n\t/**\r\n\t * The structure of the data file is very simple. Everything is line based with empty lines\r\n\t * separating the different parts. For lexers the layout is:\r\n\t * token literal names:\r\n\t * ...\r\n\t *\r\n\t * token symbolic names:\r\n\t * ...\r\n\t *\r\n\t * rule names:\r\n\t * ...\r\n\t *\r\n\t * channel names:\r\n\t * ...\r\n\t *\r\n\t * mode names:\r\n\t * ...\r\n\t *\r\n\t * atn:\r\n\t * <a single line with comma separated int values> enclosed in a pair of squared brackets.\r\n\t *\r\n\t * Data for a parser does not contain channel and mode names.\r\n\t */\r\n\texport async function parseFile(fileName: string): Promise<InterpreterDataReader.InterpreterData> {\r\n\t\tlet result: InterpreterDataReader.InterpreterData = new InterpreterDataReader.InterpreterData();\r\n\t\tlet input: Buffer = await util.promisify(fs.readFile)(fileName);\r\n\t\tlet lines = splitToLines(input);\r\n\r\n\t\ttry {\r\n\t\t\tlet line: string;\r\n\t\t\tlet lineIndex: number = 0;\r\n\t\t\tlet literalNames: string[] = [];\r\n\t\t\tlet symbolicNames: string[] = [];\r\n\r\n\t\t\tline = lines[lineIndex++];\r\n\t\t\tif (line !== \"token literal names:\") {\r\n\t\t\t\tthrow new RangeError(\"Unexpected data entry\");\r\n\t\t\t}\r\n\r\n\t\t\tfor (line = lines[lineIndex++]; line !== undefined; line = lines[lineIndex++]) {\r\n\t\t\t\tif (line.length === 0) {\r\n\t\t\t\t\tbreak;\r\n\t\t\t\t}\r\n\r\n\t\t\t\tliteralNames.push(line === \"null\" ? \"\" : line);\r\n\t\t\t}\r\n\r\n\t\t\tline = lines[lineIndex++];\r\n\t\t\tif (line !== \"token symbolic names:\") {\r\n\t\t\t\tthrow new RangeError(\"Unexpected data entry\");\r\n\t\t\t}\r\n\r\n\t\t\tfor (line = lines[lineIndex++]; line !== undefined; line = lines[lineIndex++]) {\r\n\t\t\t\tif (line.length === 0) {\r\n\t\t\t\t\tbreak;\r\n\t\t\t\t}\r\n\r\n\t\t\t\tsymbolicNames.push(line === \"null\" ? \"\" : line);\r\n\t\t\t}\r\n\r\n\t\t\tlet displayNames: string[] = [];\r\n\t\t\tresult.vocabulary = new VocabularyImpl(literalNames, symbolicNames, displayNames);\r\n\r\n\t\t\tline = lines[lineIndex++];\r\n\t\t\tif (line !== \"rule names:\") {\r\n\t\t\t\tthrow new RangeError(\"Unexpected data entry\");\r\n\t\t\t}\r\n\r\n\t\t\tfor (line = lines[lineIndex++]; line !== undefined; line = lines[lineIndex++]) {\r\n\t\t\t\tif (line.length === 0) {\r\n\t\t\t\t\tbreak;\r\n\t\t\t\t}\r\n\r\n\t\t\t\tresult.ruleNames.push(line);\r\n\t\t\t}\r\n\r\n\t\t\tline = lines[lineIndex++];\r\n\t\t\tif (line === \"channel names:\") { // Additional lexer data.\r\n\t\t\t\tresult.channels = [];\r\n\t\t\t\tfor (line = lines[lineIndex++]; line !== undefined; line = lines[lineIndex++]) {\r\n\t\t\t\t\tif (line.length === 0) {\r\n\t\t\t\t\t\tbreak;\r\n\t\t\t\t\t}\r\n\r\n\t\t\t\t\tresult.channels.push(line);\r\n\t\t\t\t}\r\n\r\n\t\t\t\tline = lines[lineIndex++];\r\n\t\t\t\tif (line !== \"mode names:\") {\r\n\t\t\t\t\tthrow new RangeError(\"Unexpected data entry\");\r\n\t\t\t\t}\r\n\r\n\t\t\t\tresult.modes = [];\r\n\t\t\t\tfor (line = lines[lineIndex++]; line !== undefined; line = lines[lineIndex++]) {\r\n\t\t\t\t\tif (line.length === 0) {\r\n\t\t\t\t\t\tbreak;\r\n\t\t\t\t\t}\r\n\r\n\t\t\t\t\tresult.modes.push(line);\r\n\t\t\t\t}\r\n\t\t\t}\r\n\r\n\t\t\tline = lines[lineIndex++];\r\n\t\t\tif (line !== \"atn:\") {\r\n\t\t\t\tthrow new RangeError(\"Unexpected data entry\");\r\n\t\t\t}\r\n\r\n\t\t\tline = lines[lineIndex++];\r\n\t\t\tlet elements: string[] = line.split(\",\");\r\n\t\t\tlet serializedATN: Uint16Array = new Uint16Array(elements.length);\r\n\r\n\t\t\tfor (let i: number = 0; i < elements.length; ++i) {\r\n\t\t\t\tlet value: number;\r\n\t\t\t\tlet element: string = elements[i];\r\n\t\t\t\tif (element.startsWith(\"[\")) {\r\n\t\t\t\t\tvalue = parseInt(element.substring(1).trim(), 10);\r\n\t\t\t\t}\r\n\t\t\t\telse if (element.endsWith(\"]\")) {\r\n\t\t\t\t\tvalue = parseInt(element.substring(0, element.length - 1).trim(), 10);\r\n\t\t\t\t}\r\n\t\t\t\telse {\r\n\t\t\t\t\tvalue = parseInt(element.trim(), 10);\r\n\t\t\t\t}\r\n\r\n\t\t\t\tserializedATN[i] = value;\r\n\t\t\t}\r\n\r\n\t\t\tlet deserializer: ATNDeserializer = new ATNDeserializer();\r\n\t\t\tresult.atn = deserializer.deserialize(serializedATN);\r\n\t\t}\r\n\t\tcatch (e) {\r\n\t\t\t// We just swallow the error and return empty objects instead.\r\n\t\t}\r\n\r\n\t\treturn result;\r\n\t}\r\n\r\n\texport class InterpreterData {\r\n\t\tpublic atn?: ATN;\r\n\t\tpublic vocabulary: Vocabulary = VocabularyImpl.EMPTY_VOCABULARY;\r\n\t\tpublic ruleNames: string[] = [];\r\n\t\tpublic channels?: string[]; // Only valid for lexer grammars.\r\n\t\tpublic modes?: string[]; // ditto\r\n\t}\r\n}\r\n"]}