moved to root
This commit is contained in:
Andrew Zambazos
@@ -0,0 +1,167 @@
|
||||
/*
|
||||
* Copyright (C) 2013 Apple 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:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. 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.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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.
|
||||
*/
|
||||
|
||||
WI.Formatter = class Formatter
|
||||
{
|
||||
constructor(codeMirror, builder)
|
||||
{
|
||||
console.assert(codeMirror);
|
||||
console.assert(builder);
|
||||
|
||||
this._codeMirror = codeMirror;
|
||||
this._builder = builder;
|
||||
|
||||
this._lastToken = null;
|
||||
this._lastContent = "";
|
||||
}
|
||||
|
||||
// Public
|
||||
|
||||
format(from, to)
|
||||
{
|
||||
console.assert(this._builder.originalContent === null);
|
||||
if (this._builder.originalContent !== null)
|
||||
return;
|
||||
|
||||
var outerMode = this._codeMirror.getMode();
|
||||
var content = this._codeMirror.getRange(from, to);
|
||||
var state = CodeMirror.copyState(outerMode, this._codeMirror.getTokenAt(from).state);
|
||||
this._builder.setOriginalContent(content);
|
||||
|
||||
var lineOffset = 0;
|
||||
var lines = content.split("\n");
|
||||
for (var i = 0; i < lines.length; ++i) {
|
||||
var line = lines[i];
|
||||
var startOfNewLine = true;
|
||||
var firstTokenOnLine = true;
|
||||
var stream = new CodeMirror.StringStream(line);
|
||||
while (!stream.eol()) {
|
||||
var innerMode = CodeMirror.innerMode(outerMode, state);
|
||||
var token = outerMode.token(stream, state);
|
||||
var isWhiteSpace = token === null && /^\s*$/.test(stream.current());
|
||||
this._handleToken(innerMode.mode, token, state, stream, lineOffset + stream.start, isWhiteSpace, startOfNewLine, firstTokenOnLine);
|
||||
stream.start = stream.pos;
|
||||
startOfNewLine = false;
|
||||
if (firstTokenOnLine && !isWhiteSpace)
|
||||
firstTokenOnLine = false;
|
||||
}
|
||||
|
||||
if (firstTokenOnLine)
|
||||
this._handleEmptyLine();
|
||||
|
||||
lineOffset += line.length + 1; // +1 for the "\n" removed in split.
|
||||
this._handleLineEnding(lineOffset - 1); // -1 for the index of the "\n".
|
||||
}
|
||||
|
||||
this._builder.finish();
|
||||
}
|
||||
|
||||
// Private
|
||||
|
||||
_handleToken(mode, token, state, stream, originalPosition, isWhiteSpace, startOfNewLine, firstTokenOnLine)
|
||||
{
|
||||
// String content of the token.
|
||||
var content = stream.current();
|
||||
|
||||
// Start of a new line. Insert a newline to be safe if code was not-ASI safe. These are collapsed.
|
||||
if (startOfNewLine)
|
||||
this._builder.appendNewline();
|
||||
|
||||
// Whitespace. Remove all spaces or collapse to a single space.
|
||||
if (isWhiteSpace) {
|
||||
this._builder.appendSpace();
|
||||
return;
|
||||
}
|
||||
|
||||
// Avoid some hooks for content in comments.
|
||||
var isComment = token && /\bcomment\b/.test(token);
|
||||
|
||||
if (mode.modifyStateForTokenPre)
|
||||
mode.modifyStateForTokenPre(this._lastToken, this._lastContent, token, state, content, isComment);
|
||||
|
||||
// Should we remove the last whitespace?
|
||||
if (this._builder.lastTokenWasWhitespace && mode.removeLastWhitespace(this._lastToken, this._lastContent, token, state, content, isComment))
|
||||
this._builder.removeLastWhitespace();
|
||||
|
||||
// Should we remove the last newline?
|
||||
if (this._builder.lastTokenWasNewline && mode.removeLastNewline(this._lastToken, this._lastContent, token, state, content, isComment, firstTokenOnLine))
|
||||
this._builder.removeLastNewline();
|
||||
|
||||
// Add whitespace after the last token?
|
||||
if (!this._builder.lastTokenWasWhitespace && mode.shouldHaveSpaceAfterLastToken(this._lastToken, this._lastContent, token, state, content, isComment))
|
||||
this._builder.appendSpace();
|
||||
|
||||
// Add whitespace before this token?
|
||||
if (!this._builder.lastTokenWasWhitespace && mode.shouldHaveSpaceBeforeToken(this._lastToken, this._lastContent, token, state, content, isComment))
|
||||
this._builder.appendSpace();
|
||||
|
||||
// Should we dedent before this token?
|
||||
var dedents = mode.dedentsBeforeToken(this._lastToken, this._lastContent, token, state, content, isComment);
|
||||
while (dedents-- > 0)
|
||||
this._builder.dedent();
|
||||
|
||||
// Should we add a newline before this token?
|
||||
if (mode.newlineBeforeToken(this._lastToken, this._lastContent, token, state, content, isComment))
|
||||
this._builder.appendNewline();
|
||||
|
||||
// Should we indent before this token?
|
||||
if (mode.indentBeforeToken(this._lastToken, this._lastContent, token, state, content, isComment))
|
||||
this._builder.indent();
|
||||
|
||||
// Append token.
|
||||
this._builder.appendToken(content, originalPosition);
|
||||
|
||||
// Let the pretty printer update any state it keeps track of.
|
||||
if (mode.modifyStateForTokenPost)
|
||||
mode.modifyStateForTokenPost(this._lastToken, this._lastContent, token, state, content, isComment);
|
||||
|
||||
// Should we indent or dedent after this token?
|
||||
if (!isComment && mode.indentAfterToken(this._lastToken, this._lastContent, token, state, content, isComment))
|
||||
this._builder.indent();
|
||||
|
||||
// Should we add newlines after this token?
|
||||
var newlines = mode.newlinesAfterToken(this._lastToken, this._lastContent, token, state, content, isComment);
|
||||
if (newlines)
|
||||
this._builder.appendMultipleNewlines(newlines);
|
||||
|
||||
// Record this token as the last token.
|
||||
this._lastToken = token;
|
||||
this._lastContent = content;
|
||||
}
|
||||
|
||||
_handleEmptyLine()
|
||||
{
|
||||
// Preserve original whitespace only lines by adding a newline.
|
||||
// However, don't do this if the builder just added multiple newlines.
|
||||
if (!(this._builder.lastTokenWasNewline && this._builder.lastNewlineAppendWasMultiple))
|
||||
this._builder.appendNewline(true);
|
||||
}
|
||||
|
||||
_handleLineEnding(originalNewLinePosition)
|
||||
{
|
||||
// Record the original line ending.
|
||||
this._builder.addOriginalLineEnding(originalNewLinePosition);
|
||||
}
|
||||
};
|
||||
Reference in New Issue
Block a user