Spaces:
Configuration error
Configuration error
File size: 2,645 Bytes
a053984 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 |
import { tokenize, Delim, WhiteSpace } from '../tokenizer/index.js';
import { generateSourceMap } from './sourceMap.js';
import * as tokenBefore from './token-before.js';
const REVERSESOLIDUS = 0x005c; // U+005C REVERSE SOLIDUS (\)
function processChildren(node, delimeter) {
if (typeof delimeter === 'function') {
let prev = null;
node.children.forEach(node => {
if (prev !== null) {
delimeter.call(this, prev);
}
this.node(node);
prev = node;
});
return;
}
node.children.forEach(this.node, this);
}
function processChunk(chunk) {
tokenize(chunk, (type, start, end) => {
this.token(type, chunk.slice(start, end));
});
}
export function createGenerator(config) {
const types = new Map();
for (let name in config.node) {
const item = config.node[name];
const fn = item.generate || item;
if (typeof fn === 'function') {
types.set(name, item.generate || item);
}
}
return function(node, options) {
let buffer = '';
let prevCode = 0;
let handlers = {
node(node) {
if (types.has(node.type)) {
types.get(node.type).call(publicApi, node);
} else {
throw new Error('Unknown node type: ' + node.type);
}
},
tokenBefore: tokenBefore.safe,
token(type, value) {
prevCode = this.tokenBefore(prevCode, type, value);
this.emit(value, type, false);
if (type === Delim && value.charCodeAt(0) === REVERSESOLIDUS) {
this.emit('\n', WhiteSpace, true);
}
},
emit(value) {
buffer += value;
},
result() {
return buffer;
}
};
if (options) {
if (typeof options.decorator === 'function') {
handlers = options.decorator(handlers);
}
if (options.sourceMap) {
handlers = generateSourceMap(handlers);
}
if (options.mode in tokenBefore) {
handlers.tokenBefore = tokenBefore[options.mode];
}
}
const publicApi = {
node: (node) => handlers.node(node),
children: processChildren,
token: (type, value) => handlers.token(type, value),
tokenize: processChunk
};
handlers.node(node);
return handlers.result();
};
};
|