antlr4ts/ListTokenSource.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\n// ConvertTo-TS run at 2016-10-04T11:26:52.1916955-07:00\r\n\r\nimport { CharStream } from \"./CharStream\";\r\nimport { CommonTokenFactory } from \"./CommonTokenFactory\";\r\nimport { NotNull, Override } from \"./Decorators\";\r\nimport { Token } from \"./Token\";\r\nimport { TokenFactory } from \"./TokenFactory\";\r\nimport { TokenSource } from \"./TokenSource\";\r\n\r\n/**\r\n * Provides an implementation of {@link TokenSource} as a wrapper around a list\r\n * of {@link Token} objects.\r\n *\r\n * If the final token in the list is an {@link Token#EOF} token, it will be used\r\n * as the EOF token for every call to {@link #nextToken} after the end of the\r\n * list is reached. Otherwise, an EOF token will be created.\r\n */\r\nexport class ListTokenSource implements TokenSource {\r\n\t/**\r\n\t * The wrapped collection of {@link Token} objects to return.\r\n\t */\r\n\tprotected tokens: Token[];\r\n\r\n\t/**\r\n\t * The name of the input source. If this value is `undefined`, a call to\r\n\t * {@link #getSourceName} should return the source name used to create the\r\n\t * the next token in {@link #tokens} (or the previous token if the end of\r\n\t * the input has been reached).\r\n\t */\r\n\tprivate _sourceName?: string;\r\n\r\n\t/**\r\n\t * The index into {@link #tokens} of token to return by the next call to\r\n\t * {@link #nextToken}. The end of the input is indicated by this value\r\n\t * being greater than or equal to the number of items in {@link #tokens}.\r\n\t */\r\n\tprotected i: number = 0;\r\n\r\n\t/**\r\n\t * This field caches the EOF token for the token source.\r\n\t */\r\n\tprotected eofToken?: Token;\r\n\r\n\t/**\r\n\t * This is the backing field for {@link #getTokenFactory} and\r\n\t * {@link setTokenFactory}.\r\n\t */\r\n\tprivate _factory: TokenFactory = CommonTokenFactory.DEFAULT;\r\n\r\n\t/**\r\n\t * Constructs a new {@link ListTokenSource} instance from the specified\r\n\t * collection of {@link Token} objects and source name.\r\n\t *\r\n\t * @param tokens The collection of {@link Token} objects to provide as a\r\n\t * {@link TokenSource}.\r\n\t * @param sourceName The name of the {@link TokenSource}. If this value is\r\n\t * `undefined`, {@link #getSourceName} will attempt to infer the name from\r\n\t * the next {@link Token} (or the previous token if the end of the input has\r\n\t * been reached).\r\n\t *\r\n\t * @exception NullPointerException if `tokens` is `undefined`\r\n\t */\r\n\tconstructor(@NotNull tokens: Token[], sourceName?: string) {\r\n\t\tif (tokens == null) {\r\n\t\t\tthrow new Error(\"tokens cannot be null\");\r\n\t\t}\r\n\r\n\t\tthis.tokens = tokens;\r\n\t\tthis._sourceName = sourceName;\r\n\t}\r\n\r\n\t/**\r\n\t * {@inheritDoc}\r\n\t */\r\n\t@Override\r\n\tget charPositionInLine(): number {\r\n\t\tif (this.i < this.tokens.length) {\r\n\t\t\treturn this.tokens[this.i].charPositionInLine;\r\n\t\t} else if (this.eofToken != null) {\r\n\t\t\treturn this.eofToken.charPositionInLine;\r\n\t\t} else if (this.tokens.length > 0) {\r\n\t\t\t// have to calculate the result from the line/column of the previous\r\n\t\t\t// token, along with the text of the token.\r\n\t\t\tlet lastToken: Token = this.tokens[this.tokens.length - 1];\r\n\t\t\tlet tokenText: string | undefined = lastToken.text;\r\n\t\t\tif (tokenText != null) {\r\n\t\t\t\tlet lastNewLine: number = tokenText.lastIndexOf(\"\\n\");\r\n\t\t\t\tif (lastNewLine >= 0) {\r\n\t\t\t\t\treturn tokenText.length - lastNewLine - 1;\r\n\t\t\t\t}\r\n\t\t\t}\r\n\r\n\t\t\treturn lastToken.charPositionInLine + lastToken.stopIndex - lastToken.startIndex + 1;\r\n\t\t}\r\n\r\n\t\t// only reach this if tokens is empty, meaning EOF occurs at the first\r\n\t\t// position in the input\r\n\t\treturn 0;\r\n\t}\r\n\r\n\t/**\r\n\t * {@inheritDoc}\r\n\t */\r\n\t@Override\r\n\tpublic nextToken(): Token {\r\n\t\tif (this.i >= this.tokens.length) {\r\n\t\t\tif (this.eofToken == null) {\r\n\t\t\t\tlet start: number = -1;\r\n\t\t\t\tif (this.tokens.length > 0) {\r\n\t\t\t\t\tlet previousStop: number = this.tokens[this.tokens.length - 1].stopIndex;\r\n\t\t\t\t\tif (previousStop !== -1) {\r\n\t\t\t\t\t\tstart = previousStop + 1;\r\n\t\t\t\t\t}\r\n\t\t\t\t}\r\n\r\n\t\t\t\tlet stop: number = Math.max(-1, start - 1);\r\n\t\t\t\tthis.eofToken = this._factory.create({ source: this, stream: this.inputStream }, Token.EOF, \"EOF\", Token.DEFAULT_CHANNEL, start, stop, this.line, this.charPositionInLine);\r\n\t\t\t}\r\n\r\n\t\t\treturn this.eofToken;\r\n\t\t}\r\n\r\n\t\tlet t: Token = this.tokens[this.i];\r\n\t\tif (this.i === this.tokens.length - 1 && t.type === Token.EOF) {\r\n\t\t\tthis.eofToken = t;\r\n\t\t}\r\n\r\n\t\tthis.i++;\r\n\t\treturn t;\r\n\t}\r\n\r\n\t/**\r\n\t * {@inheritDoc}\r\n\t */\r\n\t@Override\r\n\tget line(): number {\r\n\t\tif (this.i < this.tokens.length) {\r\n\t\t\treturn this.tokens[this.i].line;\r\n\t\t} else if (this.eofToken != null) {\r\n\t\t\treturn this.eofToken.line;\r\n\t\t} else if (this.tokens.length > 0) {\r\n\t\t\t// have to calculate the result from the line/column of the previous\r\n\t\t\t// token, along with the text of the token.\r\n\t\t\tlet lastToken: Token = this.tokens[this.tokens.length - 1];\r\n\t\t\tlet line: number = lastToken.line;\r\n\r\n\t\t\tlet tokenText: string | undefined = lastToken.text;\r\n\t\t\tif (tokenText != null) {\r\n\t\t\t\tfor (let i = 0; i < tokenText.length; i++) {\r\n\t\t\t\t\tif (tokenText.charAt(i) === \"\\n\") {\r\n\t\t\t\t\t\tline++;\r\n\t\t\t\t\t}\r\n\t\t\t\t}\r\n\t\t\t}\r\n\r\n\t\t\t// if no text is available, assume the token did not contain any newline characters.\r\n\t\t\treturn line;\r\n\t\t}\r\n\r\n\t\t// only reach this if tokens is empty, meaning EOF occurs at the first\r\n\t\t// position in the input\r\n\t\treturn 1;\r\n\t}\r\n\r\n\t/**\r\n\t * {@inheritDoc}\r\n\t */\r\n\t@Override\r\n\tget inputStream(): CharStream | undefined {\r\n\t\tif (this.i < this.tokens.length) {\r\n\t\t\treturn this.tokens[this.i].inputStream;\r\n\t\t} else if (this.eofToken != null) {\r\n\t\t\treturn this.eofToken.inputStream;\r\n\t\t} else if (this.tokens.length > 0) {\r\n\t\t\treturn this.tokens[this.tokens.length - 1].inputStream;\r\n\t\t}\r\n\r\n\t\t// no input stream information is available\r\n\t\treturn undefined;\r\n\t}\r\n\r\n\t/**\r\n\t * {@inheritDoc}\r\n\t */\r\n\t@Override\r\n\tget sourceName(): string {\r\n\t\tif (this._sourceName) {\r\n\t\t\treturn this._sourceName;\r\n\t\t}\r\n\r\n\t\tlet inputStream: CharStream | undefined = this.inputStream;\r\n\t\tif (inputStream != null) {\r\n\t\t\treturn inputStream.sourceName;\r\n\t\t}\r\n\r\n\t\treturn \"List\";\r\n\t}\r\n\r\n\t/**\r\n\t * {@inheritDoc}\r\n\t */\r\n\t// @Override\r\n\tset tokenFactory(@NotNull factory: TokenFactory) {\r\n\t\tthis._factory = factory;\r\n\t}\r\n\r\n\t/**\r\n\t * {@inheritDoc}\r\n\t */\r\n\t@Override\r\n\t@NotNull\r\n\tget tokenFactory(): TokenFactory {\r\n\t\treturn this._factory;\r\n\t}\r\n}\r\n"]}