74 lines
2.1 KiB
JavaScript
Executable file
74 lines
2.1 KiB
JavaScript
Executable file
var tokenize = require('../tokenizer');
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var TokenStream = require('../common/TokenStream');
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var tokenStream = new TokenStream();
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var astToTokens = {
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decorator: function(handlers) {
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var curNode = null;
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var prev = { len: 0, node: null };
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var nodes = [prev];
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var buffer = '';
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return {
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children: handlers.children,
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node: function(node) {
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var tmp = curNode;
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curNode = node;
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handlers.node.call(this, node);
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curNode = tmp;
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},
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chunk: function(chunk) {
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buffer += chunk;
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if (prev.node !== curNode) {
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nodes.push({
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len: chunk.length,
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node: curNode
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});
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} else {
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prev.len += chunk.length;
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}
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},
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result: function() {
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return prepareTokens(buffer, nodes);
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}
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};
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}
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};
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function prepareTokens(str, nodes) {
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var tokens = [];
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var nodesOffset = 0;
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var nodesIndex = 0;
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var currentNode = nodes ? nodes[nodesIndex].node : null;
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tokenize(str, tokenStream);
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while (!tokenStream.eof) {
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if (nodes) {
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while (nodesIndex < nodes.length && nodesOffset + nodes[nodesIndex].len <= tokenStream.tokenStart) {
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nodesOffset += nodes[nodesIndex++].len;
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currentNode = nodes[nodesIndex].node;
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}
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}
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tokens.push({
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type: tokenStream.tokenType,
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value: tokenStream.getTokenValue(),
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index: tokenStream.tokenIndex, // TODO: remove it, temporary solution
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balance: tokenStream.balance[tokenStream.tokenIndex], // TODO: remove it, temporary solution
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node: currentNode
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});
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tokenStream.next();
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// console.log({ ...tokens[tokens.length - 1], node: undefined });
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}
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return tokens;
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}
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module.exports = function(value, syntax) {
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if (typeof value === 'string') {
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return prepareTokens(value, null);
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}
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return syntax.generate(value, astToTokens);
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};
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