mirror of
https://github.com/jashkenas/coffeescript.git
synced 2022-11-09 12:23:24 -05:00
349 lines
13 KiB
JavaScript
349 lines
13 KiB
JavaScript
// Generated by CoffeeScript 1.3.2
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(function() {
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var BALANCED_PAIRS, EXPRESSION_CLOSE, EXPRESSION_END, EXPRESSION_START, IMPLICIT_BLOCK, IMPLICIT_CALL, IMPLICIT_END, IMPLICIT_FUNC, IMPLICIT_UNSPACED_CALL, INVERSES, LINEBREAKS, SINGLE_CLOSERS, SINGLE_LINERS, left, rite, _i, _len, _ref,
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__indexOf = [].indexOf || function(item) { for (var i = 0, l = this.length; i < l; i++) { if (i in this && this[i] === item) return i; } return -1; },
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__slice = [].slice;
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exports.Rewriter = (function() {
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function Rewriter() {}
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Rewriter.prototype.rewrite = function(tokens) {
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this.tokens = tokens;
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this.removeLeadingNewlines();
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this.removeMidExpressionNewlines();
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this.closeOpenCalls();
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this.closeOpenIndexes();
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this.addImplicitIndentation();
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this.tagPostfixConditionals();
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this.addImplicitBraces();
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this.addImplicitParentheses();
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return this.tokens;
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};
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Rewriter.prototype.scanTokens = function(block) {
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var i, token, tokens;
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tokens = this.tokens;
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i = 0;
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while (token = tokens[i]) {
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i += block.call(this, token, i, tokens);
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}
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return true;
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};
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Rewriter.prototype.detectEnd = function(i, condition, action) {
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var levels, token, tokens, _ref, _ref1;
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tokens = this.tokens;
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levels = 0;
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while (token = tokens[i]) {
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if (levels === 0 && condition.call(this, token, i)) {
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return action.call(this, token, i);
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}
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if (!token || levels < 0) {
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return action.call(this, token, i - 1);
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}
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if (_ref = token[0], __indexOf.call(EXPRESSION_START, _ref) >= 0) {
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levels += 1;
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} else if (_ref1 = token[0], __indexOf.call(EXPRESSION_END, _ref1) >= 0) {
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levels -= 1;
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}
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i += 1;
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}
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return i - 1;
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};
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Rewriter.prototype.removeLeadingNewlines = function() {
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var i, tag, _i, _len, _ref;
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_ref = this.tokens;
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for (i = _i = 0, _len = _ref.length; _i < _len; i = ++_i) {
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tag = _ref[i][0];
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if (tag !== 'TERMINATOR') {
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break;
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}
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}
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if (i) {
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return this.tokens.splice(0, i);
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}
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};
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Rewriter.prototype.removeMidExpressionNewlines = function() {
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return this.scanTokens(function(token, i, tokens) {
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var _ref;
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if (!(token[0] === 'TERMINATOR' && (_ref = this.tag(i + 1), __indexOf.call(EXPRESSION_CLOSE, _ref) >= 0))) {
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return 1;
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}
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tokens.splice(i, 1);
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return 0;
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});
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};
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Rewriter.prototype.closeOpenCalls = function() {
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var action, condition;
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condition = function(token, i) {
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var _ref;
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return ((_ref = token[0]) === ')' || _ref === 'CALL_END') || token[0] === 'OUTDENT' && this.tag(i - 1) === ')';
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};
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action = function(token, i) {
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return this.tokens[token[0] === 'OUTDENT' ? i - 1 : i][0] = 'CALL_END';
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};
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return this.scanTokens(function(token, i) {
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if (token[0] === 'CALL_START') {
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this.detectEnd(i + 1, condition, action);
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}
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return 1;
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});
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};
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Rewriter.prototype.closeOpenIndexes = function() {
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var action, condition;
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condition = function(token, i) {
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var _ref;
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return (_ref = token[0]) === ']' || _ref === 'INDEX_END';
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};
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action = function(token, i) {
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return token[0] = 'INDEX_END';
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};
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return this.scanTokens(function(token, i) {
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if (token[0] === 'INDEX_START') {
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this.detectEnd(i + 1, condition, action);
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}
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return 1;
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});
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};
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Rewriter.prototype.addImplicitBraces = function() {
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var action, condition, sameLine, stack, start, startIndent, startIndex, startsLine;
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stack = [];
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start = null;
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startsLine = null;
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sameLine = true;
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startIndent = 0;
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startIndex = 0;
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condition = function(token, i) {
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var one, tag, three, two, _ref, _ref1;
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_ref = this.tokens.slice(i + 1, (i + 3) + 1 || 9e9), one = _ref[0], two = _ref[1], three = _ref[2];
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if ('HERECOMMENT' === (one != null ? one[0] : void 0)) {
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return false;
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}
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tag = token[0];
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if (__indexOf.call(LINEBREAKS, tag) >= 0) {
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sameLine = false;
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}
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return (((tag === 'TERMINATOR' || tag === 'OUTDENT') || (__indexOf.call(IMPLICIT_END, tag) >= 0 && sameLine && !(i - startIndex === 1))) && ((!startsLine && this.tag(i - 1) !== ',') || !((two != null ? two[0] : void 0) === ':' || (one != null ? one[0] : void 0) === '@' && (three != null ? three[0] : void 0) === ':'))) || (tag === ',' && one && ((_ref1 = one[0]) !== 'IDENTIFIER' && _ref1 !== 'NUMBER' && _ref1 !== 'STRING' && _ref1 !== '@' && _ref1 !== 'TERMINATOR' && _ref1 !== 'OUTDENT'));
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};
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action = function(token, i) {
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var tok;
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tok = this.generate('}', '}', token[2]);
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return this.tokens.splice(i, 0, tok);
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};
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return this.scanTokens(function(token, i, tokens) {
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var ago, idx, prevTag, tag, tok, value, _ref, _ref1;
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if (_ref = (tag = token[0]), __indexOf.call(EXPRESSION_START, _ref) >= 0) {
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stack.push([(tag === 'INDENT' && this.tag(i - 1) === '{' ? '{' : tag), i]);
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return 1;
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}
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if (__indexOf.call(EXPRESSION_END, tag) >= 0) {
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start = stack.pop();
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return 1;
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}
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if (!(tag === ':' && ((ago = this.tag(i - 2)) === ':' || ((_ref1 = stack[stack.length - 1]) != null ? _ref1[0] : void 0) !== '{'))) {
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return 1;
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}
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sameLine = true;
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startIndex = i + 1;
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stack.push(['{']);
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idx = ago === '@' ? i - 2 : i - 1;
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while (this.tag(idx - 2) === 'HERECOMMENT') {
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idx -= 2;
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}
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prevTag = this.tag(idx - 1);
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startsLine = !prevTag || (__indexOf.call(LINEBREAKS, prevTag) >= 0);
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value = new String('{');
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value.generated = true;
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tok = this.generate('{', value, token[2]);
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tokens.splice(idx, 0, tok);
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this.detectEnd(i + 2, condition, action);
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return 2;
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});
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};
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Rewriter.prototype.addImplicitParentheses = function() {
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var action, condition, noCall, seenControl, seenSingle;
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noCall = seenSingle = seenControl = false;
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condition = function(token, i) {
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var post, tag, _ref, _ref1;
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tag = token[0];
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if (!seenSingle && token.fromThen) {
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return true;
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}
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if (tag === 'IF' || tag === 'ELSE' || tag === 'CATCH' || tag === '->' || tag === '=>' || tag === 'CLASS') {
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seenSingle = true;
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}
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if (tag === 'IF' || tag === 'ELSE' || tag === 'SWITCH' || tag === 'TRY' || tag === '=') {
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seenControl = true;
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}
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if ((tag === '.' || tag === '?.' || tag === '::') && this.tag(i - 1) === 'OUTDENT') {
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return true;
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}
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return !token.generated && this.tag(i - 1) !== ',' && (__indexOf.call(IMPLICIT_END, tag) >= 0 || (tag === 'INDENT' && !seenControl)) && (tag !== 'INDENT' || (((_ref = this.tag(i - 2)) !== 'CLASS' && _ref !== 'EXTENDS') && (_ref1 = this.tag(i - 1), __indexOf.call(IMPLICIT_BLOCK, _ref1) < 0) && !((post = this.tokens[i + 1]) && post.generated && post[0] === '{')));
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};
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action = function(token, i) {
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return this.tokens.splice(i, 0, this.generate('CALL_END', ')', token[2]));
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};
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return this.scanTokens(function(token, i, tokens) {
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var callObject, current, next, prev, tag, _ref, _ref1, _ref2;
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tag = token[0];
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if (tag === 'CLASS' || tag === 'IF' || tag === 'FOR' || tag === 'WHILE') {
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noCall = true;
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}
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_ref = tokens.slice(i - 1, (i + 1) + 1 || 9e9), prev = _ref[0], current = _ref[1], next = _ref[2];
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callObject = !noCall && tag === 'INDENT' && next && next.generated && next[0] === '{' && prev && (_ref1 = prev[0], __indexOf.call(IMPLICIT_FUNC, _ref1) >= 0);
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seenSingle = false;
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seenControl = false;
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if (__indexOf.call(LINEBREAKS, tag) >= 0) {
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noCall = false;
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}
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if (prev && !prev.spaced && tag === '?') {
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token.call = true;
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}
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if (token.fromThen) {
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return 1;
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}
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if (!(callObject || (prev != null ? prev.spaced : void 0) && (prev.call || (_ref2 = prev[0], __indexOf.call(IMPLICIT_FUNC, _ref2) >= 0)) && (__indexOf.call(IMPLICIT_CALL, tag) >= 0 || !(token.spaced || token.newLine) && __indexOf.call(IMPLICIT_UNSPACED_CALL, tag) >= 0))) {
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return 1;
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}
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tokens.splice(i, 0, this.generate('CALL_START', '(', token[2]));
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this.detectEnd(i + 1, condition, action);
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if (prev[0] === '?') {
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prev[0] = 'FUNC_EXIST';
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}
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return 2;
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});
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};
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Rewriter.prototype.addImplicitIndentation = function() {
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var action, condition, indent, outdent, starter;
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starter = indent = outdent = null;
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condition = function(token, i) {
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var _ref;
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return token[1] !== ';' && (_ref = token[0], __indexOf.call(SINGLE_CLOSERS, _ref) >= 0) && !(token[0] === 'ELSE' && (starter !== 'IF' && starter !== 'THEN'));
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};
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action = function(token, i) {
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return this.tokens.splice((this.tag(i - 1) === ',' ? i - 1 : i), 0, outdent);
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};
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return this.scanTokens(function(token, i, tokens) {
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var tag, _ref, _ref1;
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tag = token[0];
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if (tag === 'TERMINATOR' && this.tag(i + 1) === 'THEN') {
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tokens.splice(i, 1);
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return 0;
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}
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if (tag === 'ELSE' && this.tag(i - 1) !== 'OUTDENT') {
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tokens.splice.apply(tokens, [i, 0].concat(__slice.call(this.indentation(token))));
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return 2;
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}
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if (tag === 'CATCH' && ((_ref = this.tag(i + 2)) === 'OUTDENT' || _ref === 'TERMINATOR' || _ref === 'FINALLY')) {
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tokens.splice.apply(tokens, [i + 2, 0].concat(__slice.call(this.indentation(token))));
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return 4;
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}
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if (__indexOf.call(SINGLE_LINERS, tag) >= 0 && this.tag(i + 1) !== 'INDENT' && !(tag === 'ELSE' && this.tag(i + 1) === 'IF')) {
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starter = tag;
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_ref1 = this.indentation(token, true), indent = _ref1[0], outdent = _ref1[1];
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if (starter === 'THEN') {
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indent.fromThen = true;
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}
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tokens.splice(i + 1, 0, indent);
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this.detectEnd(i + 2, condition, action);
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if (tag === 'THEN') {
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tokens.splice(i, 1);
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}
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return 1;
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}
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return 1;
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});
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};
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Rewriter.prototype.tagPostfixConditionals = function() {
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var action, condition, original;
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original = null;
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condition = function(token, i) {
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var _ref;
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return (_ref = token[0]) === 'TERMINATOR' || _ref === 'INDENT';
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};
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action = function(token, i) {
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if (token[0] !== 'INDENT' || (token.generated && !token.fromThen)) {
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return original[0] = 'POST_' + original[0];
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}
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};
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return this.scanTokens(function(token, i) {
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if (token[0] !== 'IF') {
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return 1;
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}
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original = token;
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this.detectEnd(i + 1, condition, action);
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return 1;
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});
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};
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Rewriter.prototype.indentation = function(token, implicit) {
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var indent, outdent;
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if (implicit == null) {
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implicit = false;
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}
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indent = ['INDENT', 2, token[2]];
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outdent = ['OUTDENT', 2, token[2]];
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if (implicit) {
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indent.generated = outdent.generated = true;
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}
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return [indent, outdent];
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};
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Rewriter.prototype.generate = function(tag, value, line) {
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var tok;
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tok = [tag, value, line];
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tok.generated = true;
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return tok;
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};
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Rewriter.prototype.tag = function(i) {
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var _ref;
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return (_ref = this.tokens[i]) != null ? _ref[0] : void 0;
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};
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return Rewriter;
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})();
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BALANCED_PAIRS = [['(', ')'], ['[', ']'], ['{', '}'], ['INDENT', 'OUTDENT'], ['CALL_START', 'CALL_END'], ['PARAM_START', 'PARAM_END'], ['INDEX_START', 'INDEX_END']];
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exports.INVERSES = INVERSES = {};
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EXPRESSION_START = [];
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EXPRESSION_END = [];
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for (_i = 0, _len = BALANCED_PAIRS.length; _i < _len; _i++) {
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_ref = BALANCED_PAIRS[_i], left = _ref[0], rite = _ref[1];
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EXPRESSION_START.push(INVERSES[rite] = left);
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EXPRESSION_END.push(INVERSES[left] = rite);
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}
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EXPRESSION_CLOSE = ['CATCH', 'WHEN', 'ELSE', 'FINALLY'].concat(EXPRESSION_END);
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IMPLICIT_FUNC = ['IDENTIFIER', 'SUPER', ')', 'CALL_END', ']', 'INDEX_END', '@', 'THIS'];
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IMPLICIT_CALL = ['IDENTIFIER', 'NUMBER', 'STRING', 'JS', 'REGEX', 'NEW', 'PARAM_START', 'CLASS', 'IF', 'TRY', 'SWITCH', 'THIS', 'BOOL', 'NULL', 'UNDEFINED', 'UNARY', 'SUPER', '@', '->', '=>', '[', '(', '{', '--', '++'];
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IMPLICIT_UNSPACED_CALL = ['+', '-'];
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IMPLICIT_BLOCK = ['->', '=>', '{', '[', ','];
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IMPLICIT_END = ['POST_IF', 'FOR', 'WHILE', 'UNTIL', 'WHEN', 'BY', 'LOOP', 'TERMINATOR'];
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SINGLE_LINERS = ['ELSE', '->', '=>', 'TRY', 'FINALLY', 'THEN'];
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SINGLE_CLOSERS = ['TERMINATOR', 'CATCH', 'FINALLY', 'ELSE', 'OUTDENT', 'LEADING_WHEN'];
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LINEBREAKS = ['TERMINATOR', 'INDENT', 'OUTDENT'];
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}).call(this);
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