@dcloudio/uni-debugger
Version:
uni-app debugger
121 lines (114 loc) • 4.42 kB
JavaScript
/*
* Copyright (C) 2013 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* @unrestricted
*/
FormatterWorker.CSSFormatter = class {
/**
* @param {!FormatterWorker.FormattedContentBuilder} builder
*/
constructor(builder) {
this._builder = builder;
}
/**
* @param {string} text
* @param {!Array.<number>} lineEndings
* @param {number} fromOffset
* @param {number} toOffset
*/
format(text, lineEndings, fromOffset, toOffset) {
this._lineEndings = lineEndings;
this._fromOffset = fromOffset;
this._toOffset = toOffset;
this._lastLine = -1;
this._state = {};
const tokenize = FormatterWorker.createTokenizer('text/css');
const oldEnforce = this._builder.setEnforceSpaceBetweenWords(false);
tokenize(text.substring(this._fromOffset, this._toOffset), this._tokenCallback.bind(this));
this._builder.setEnforceSpaceBetweenWords(oldEnforce);
}
/**
* @param {string} token
* @param {?string} type
* @param {number} startPosition
*/
_tokenCallback(token, type, startPosition) {
startPosition += this._fromOffset;
const startLine = this._lineEndings.lowerBound(startPosition);
if (startLine !== this._lastLine)
this._state.eatWhitespace = true;
if (/^property/.test(type) && !this._state.inPropertyValue)
this._state.seenProperty = true;
this._lastLine = startLine;
const isWhitespace = /^\s+$/.test(token);
if (isWhitespace) {
if (!this._state.eatWhitespace)
this._builder.addSoftSpace();
return;
}
this._state.eatWhitespace = false;
if (token === '\n')
return;
if (token !== '}') {
if (this._state.afterClosingBrace)
this._builder.addNewLine(true);
this._state.afterClosingBrace = false;
}
if (token === '}') {
if (this._state.inPropertyValue)
this._builder.addNewLine();
this._builder.decreaseNestingLevel();
this._state.afterClosingBrace = true;
this._state.inPropertyValue = false;
} else if (token === ':' && !this._state.inPropertyValue && this._state.seenProperty) {
this._builder.addToken(token, startPosition);
this._builder.addSoftSpace();
this._state.eatWhitespace = true;
this._state.inPropertyValue = true;
this._state.seenProperty = false;
return;
} else if (token === '{') {
this._builder.addSoftSpace();
this._builder.addToken(token, startPosition);
this._builder.addNewLine();
this._builder.increaseNestingLevel();
return;
}
this._builder.addToken(token, startPosition);
if (type === 'comment' && !this._state.inPropertyValue && !this._state.seenProperty)
this._builder.addNewLine();
if (token === ';' && this._state.inPropertyValue) {
this._state.inPropertyValue = false;
this._builder.addNewLine();
} else if (token === '}') {
this._builder.addNewLine();
}
}
};