60 lines
2 KiB
JavaScript
60 lines
2 KiB
JavaScript
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"use strict";
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// comment fixes
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module.exports = function(ast, comments, tokens) {
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if (comments.length) {
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var firstComment = comments[0];
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var lastComment = comments[comments.length - 1];
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// fixup program start
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if (!tokens.length) {
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// if no tokens, the program starts at the end of the last comment
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ast.start = lastComment.end;
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ast.loc.start.line = lastComment.loc.end.line;
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ast.loc.start.column = lastComment.loc.end.column;
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if (ast.leadingComments === null && ast.innerComments.length) {
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ast.leadingComments = ast.innerComments;
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}
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} else if (firstComment.start < tokens[0].start) {
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// if there are comments before the first token, the program starts at the first token
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var token = tokens[0];
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// ast.start = token.start;
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// ast.loc.start.line = token.loc.start.line;
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// ast.loc.start.column = token.loc.start.column;
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// estraverse do not put leading comments on first node when the comment
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// appear before the first token
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if (ast.body.length) {
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var node = ast.body[0];
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node.leadingComments = [];
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var firstTokenStart = token.start;
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var len = comments.length;
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for (var i = 0; i < len && comments[i].start < firstTokenStart; i++) {
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node.leadingComments.push(comments[i]);
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}
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}
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}
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// fixup program end
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if (tokens.length) {
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var lastToken = tokens[tokens.length - 1];
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if (lastComment.end > lastToken.end) {
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// If there is a comment after the last token, the program ends at the
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// last token and not the comment
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// ast.end = lastToken.end;
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ast.range[1] = lastToken.end;
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ast.loc.end.line = lastToken.loc.end.line;
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ast.loc.end.column = lastToken.loc.end.column;
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}
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}
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} else {
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if (!tokens.length) {
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ast.loc.start.line = 1;
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ast.loc.end.line = 1;
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}
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}
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if (ast.body && ast.body.length > 0) {
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ast.loc.start.line = ast.body[0].loc.start.line;
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ast.range[0] = ast.body[0].start;
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}
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};
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