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| import Tokenizer from './tokenizer';
import VSLScope from './vslscope';
import VSLTokenType from './vsltokentype';
function noop () {}
function passThrough (_, match) { return match; }
function strip (character) {
return function transform (_, match) {
return match.replace(character, '');
};
}
const strip_ = strip('_');
function slice (start, end) {
return function transform (_, match) {
return match.slice(start, end);
};
}
const slice1 = slice(1);
// from https://github.com/iamakulov/unescape-js/blob/master/src/index.js
const jsEscapeRegex = /\\(u\{([0-9A-Fa-f]+)\}|u([0-9A-Fa-f]{4})|x([0-9A-Fa-f]{2})|([1-7][0-7]{0,2}|[0-7]{2,3})|(['"tbrnfv0\\]))/g;
const usualEscapeSequences = {
'0': '\0',
'b': '\b',
'f': '\f',
'n': '\n',
'r': '\r',
't': '\t',
'v': '\v',
'\'': '\'',
'"': '"',
'\\': '\\'
};
const fromHex = (str) => String.fromCodePoint(parseInt(str, 16));
const fromOct = (str) => String.fromCodePoint(parseInt(str, 8));
function unescapeString(_, match) {
return match.slice(1, -1).replace(jsEscapeRegex, (_, __, varHex, longHex, shortHex, octal, specialCharacter) => {
Iif (varHex !== undefined)
return fromHex(varHex);
Iif (longHex !== undefined)
return fromHex(longHex);
Iif (shortHex !== undefined)
return fromHex(shortHex);
Iif (octal !== undefined)
return fromOct(octal);
else
return usualEscapeSequences[specialCharacter];
});
}
/**
* VSL-specific Tokenizer
*
* This defines tokens for VSL. For further information see {@link Tokenizer}
*/
export default class VSLTokenizer extends Tokenizer {
constructor () {
let tokenMatchers = Array(VSLScope.MAX);
tokenMatchers[VSLScope.Normal] = [
['(?:\\s|\\\\\\n)*[\r\n](?:\\s|\\\\\\n)*', (self, match) => {
self.newline(match.match(/(?:\r|\n|\r\n)/).length, match.match(/[ \t\v\f]*$/)[0].length - 1);
return '\n';
}],
['(?:\\s|\\\\\\n)+', noop],
['//[^\r\n]+', noop],
['/\\*', self => {
self.variables.commentDepth++;
self.begin(VSLScope.Comment);
}, null],
['"(?:\\\\["bfnrt\\/\\\\]|\\\\u[a-fA-F0-9]{4}|[^"\\\\])*"', unescapeString, VSLTokenType.String],
["'(?:\\\\['bfnrt\\/\\\\]|\\\\u[a-fA-F0-9]{4}|[^'\\\\])*'", unescapeString, VSLTokenType.String],
['\\$+[0-9]+', passThrough, VSLTokenType.SpecialArgument],
['\\$[a-zA-Z_][a-zA-Z0-9_]*', slice1, VSLTokenType.SpecialIdentifier],
['\\.[0-9_]+', strip_, VSLTokenType.Decimal],
['[0-9][0-9_]*\\.[0-9_]+', strip_, VSLTokenType.Decimal],
['(?:[1-5]?[0-9]|6[0-2])b[0-9a-zA-Z_]*', strip_, VSLTokenType.Integer],
['[0-9][0-9_]*', strip_, VSLTokenType.Integer],
['/[^\/\*]([^\\/\r\n]|\\[^\r\n])+/[gmixc]*', passThrough, VSLTokenType.Regex],
['\\.\\.\\.', passThrough],
['\\.\\.', passThrough],
['\\.', passThrough],
['->', passThrough],
['=>', passThrough],
['~>', passThrough],
[':>', passThrough],
['@@@', passThrough],
['@@', passThrough],
['@', passThrough],
[';', passThrough],
[':', passThrough],
[',', passThrough],
['\\+=', passThrough],
['-=', passThrough],
['\\*\\*=', passThrough],
['\\*=', passThrough],
['/=', passThrough],
['%=', passThrough],
['\\+', passThrough],
['-', passThrough],
['/', passThrough],
['%', passThrough],
['\\*\\*', passThrough],
['\\*', passThrough],
['<<=', passThrough],
['>>=', passThrough],
['<<', passThrough],
['>>', passThrough],
['==', passThrough],
['!=', passThrough],
['<>', passThrough],
['<=>', passThrough],
['<=', passThrough],
['>=', passThrough],
['<', passThrough],
['>', passThrough],
['=', passThrough],
[':=', passThrough],
['&=', passThrough],
['\\|=', passThrough],
['\\^=', passThrough],
['&&', passThrough],
['\\|\\|', passThrough],
['!', passThrough],
['&', passThrough],
['\\|', passThrough],
['~', passThrough],
['\\^', passThrough],
['\\?', passThrough],
['and', passThrough],
['or', passThrough],
['not', passThrough],
['xor', passThrough],
['::', passThrough],
['{', passThrough],
['}', passThrough],
['\\(', passThrough],
['\\)', passThrough],
['\\[', passThrough],
['\\]', passThrough],
['var', passThrough],
['let', passThrough],
['final', passThrough],
['const', passThrough],
['static', passThrough],
['lazy', passThrough],
['public', passThrough],
['private', passThrough],
['readonly', passThrough],
['internal', passThrough],
['is', passThrough],
['function', passThrough],
['func', passThrough],
['fn', passThrough],
['class', passThrough],
['struct', passThrough],
['interface', passThrough],
['enum', passThrough],
['typealias', passThrough],
['if', passThrough],
['for', passThrough],
['while', passThrough],
['[a-zA-Z_][a-zA-Z0-9_]*', passThrough, VSLTokenType.Identifier]
];
tokenMatchers[VSLScope.Comment] = [
['/\\*', self => {
self.variables.commentDepth++;
self.begin(VSLScope.Comment);
}],
['(?:[^/*]|\\*[^/]|/[^*])+', noop],
['\\*/', self => {
self.variables.commentDepth--;
if (!self.variables.commentDepth)
self.begin(VSLScope.Normal);
}]
];
super(tokenMatchers, VSLScope.Normal);
this.variables = {
commentDepth: 0
};
}
} |