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phab/src/applications/differential/render/DifferentialChangesetRenderer.php
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DifferentialChangesetRenderer.php
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<?php
abstract class DifferentialChangesetRenderer {
private $user;
private $changeset;
private $renderingReference;
private $renderPropertyChangeHeader;
private $isTopLevel;
private $hunkStartLines;
private $oldLines;
private $newLines;
private $oldComments;
private $newComments;
private $oldChangesetID;
private $newChangesetID;
private $oldAttachesToNewFile;
private $newAttachesToNewFile;
private $highlightOld = array();
private $highlightNew = array();
private $codeCoverage;
private $handles;
private $markupEngine;
private $oldRender;
private $newRender;
private $originalOld;
private $originalNew;
private $gaps;
private $mask;
private $depths;
private $originalCharacterEncoding;
public function setOriginalCharacterEncoding($original_character_encoding) {
$this->originalCharacterEncoding = $original_character_encoding;
return $this;
}
public function getOriginalCharacterEncoding() {
return $this->originalCharacterEncoding;
}
public function setDepths($depths) {
$this->depths = $depths;
return $this;
}
protected function getDepths() {
return $this->depths;
}
public function setMask($mask) {
$this->mask = $mask;
return $this;
}
protected function getMask() {
return $this->mask;
}
public function setGaps($gaps) {
$this->gaps = $gaps;
return $this;
}
protected function getGaps() {
return $this->gaps;
}
public function setOriginalNew($original_new) {
$this->originalNew = $original_new;
return $this;
}
protected function getOriginalNew() {
return $this->originalNew;
}
public function setOriginalOld($original_old) {
$this->originalOld = $original_old;
return $this;
}
protected function getOriginalOld() {
return $this->originalOld;
}
public function setNewRender($new_render) {
$this->newRender = $new_render;
return $this;
}
protected function getNewRender() {
return $this->newRender;
}
public function setOldRender($old_render) {
$this->oldRender = $old_render;
return $this;
}
protected function getOldRender() {
return $this->oldRender;
}
public function setMarkupEngine(PhabricatorMarkupEngine $markup_engine) {
$this->markupEngine = $markup_engine;
return $this;
}
public function getMarkupEngine() {
return $this->markupEngine;
}
public function setHandles(array $handles) {
assert_instances_of($handles, 'PhabricatorObjectHandle');
$this->handles = $handles;
return $this;
}
protected function getHandles() {
return $this->handles;
}
public function setCodeCoverage($code_coverage) {
$this->codeCoverage = $code_coverage;
return $this;
}
protected function getCodeCoverage() {
return $this->codeCoverage;
}
public function setHighlightNew($highlight_new) {
$this->highlightNew = $highlight_new;
return $this;
}
protected function getHighlightNew() {
return $this->highlightNew;
}
public function setHighlightOld($highlight_old) {
$this->highlightOld = $highlight_old;
return $this;
}
protected function getHighlightOld() {
return $this->highlightOld;
}
public function setNewAttachesToNewFile($attaches) {
$this->newAttachesToNewFile = $attaches;
return $this;
}
protected function getNewAttachesToNewFile() {
return $this->newAttachesToNewFile;
}
public function setOldAttachesToNewFile($attaches) {
$this->oldAttachesToNewFile = $attaches;
return $this;
}
protected function getOldAttachesToNewFile() {
return $this->oldAttachesToNewFile;
}
public function setNewChangesetID($new_changeset_id) {
$this->newChangesetID = $new_changeset_id;
return $this;
}
protected function getNewChangesetID() {
return $this->newChangesetID;
}
public function setOldChangesetID($old_changeset_id) {
$this->oldChangesetID = $old_changeset_id;
return $this;
}
protected function getOldChangesetID() {
return $this->oldChangesetID;
}
public function setNewComments(array $new_comments) {
foreach ($new_comments as $line_number => $comments) {
assert_instances_of($comments, 'PhabricatorInlineCommentInterface');
}
$this->newComments = $new_comments;
return $this;
}
protected function getNewComments() {
return $this->newComments;
}
public function setOldComments(array $old_comments) {
foreach ($old_comments as $line_number => $comments) {
assert_instances_of($comments, 'PhabricatorInlineCommentInterface');
}
$this->oldComments = $old_comments;
return $this;
}
protected function getOldComments() {
return $this->oldComments;
}
public function setNewLines(array $new_lines) {
$this->newLines = $new_lines;
return $this;
}
protected function getNewLines() {
return $this->newLines;
}
public function setOldLines(array $old_lines) {
$this->oldLines = $old_lines;
return $this;
}
protected function getOldLines() {
return $this->oldLines;
}
public function setHunkStartLines(array $hunk_start_lines) {
$this->hunkStartLines = $hunk_start_lines;
return $this;
}
protected function getHunkStartLines() {
return $this->hunkStartLines;
}
public function setUser(PhabricatorUser $user) {
$this->user = $user;
return $this;
}
protected function getUser() {
return $this->user;
}
public function setChangeset(DifferentialChangeset $changeset) {
$this->changeset = $changeset;
return $this;
}
protected function getChangeset() {
return $this->changeset;
}
public function setRenderingReference($rendering_reference) {
$this->renderingReference = $rendering_reference;
return $this;
}
protected function getRenderingReference() {
return $this->renderingReference;
}
public function setRenderPropertyChangeHeader($should_render) {
$this->renderPropertyChangeHeader = $should_render;
return $this;
}
private function shouldRenderPropertyChangeHeader() {
return $this->renderPropertyChangeHeader;
}
public function setIsTopLevel($is) {
$this->isTopLevel = $is;
return $this;
}
private function getIsTopLevel() {
return $this->isTopLevel;
}
final public function renderChangesetTable($content) {
$props = null;
if ($this->shouldRenderPropertyChangeHeader()) {
$props = $this->renderPropertyChangeHeader();
}
$notice = null;
if ($this->getIsTopLevel()) {
$force = (!$content && !$props);
$notice = $this->renderChangeTypeHeader($force);
}
$result = $notice.$props.$content;
// TODO: Let the user customize their tab width / display style.
// TODO: We should possibly post-process "\r" as well.
// TODO: Both these steps should happen earlier.
$result = str_replace("\t", ' ', $result);
return phutil_safe_html($result);
}
abstract public function isOneUpRenderer();
abstract public function renderTextChange(
$range_start,
$range_len,
$rows);
abstract public function renderFileChange(
$old = null,
$new = null,
$id = 0,
$vs = 0);
abstract protected function renderChangeTypeHeader($force);
protected function didRenderChangesetTableContents($contents) {
return $contents;
}
/**
* Render a "shield" over the diff, with a message like "This file is
* generated and does not need to be reviewed." or "This file was completely
* deleted." This UI element hides unimportant text so the reviewer doesn't
* need to scroll past it.
*
* The shield includes a link to view the underlying content. This link
* may force certain rendering modes when the link is clicked:
*
* - `"default"`: Render the diff normally, as though it was not
* shielded. This is the default and appropriate if the underlying
* diff is a normal change, but was hidden for reasons of not being
* important (e.g., generated code).
* - `"text"`: Force the text to be shown. This is probably only relevant
* when a file is not changed.
* - `"whitespace"`: Force the text to be shown, and the diff to be
* rendered with all whitespace shown. This is probably only relevant
* when a file is changed only by altering whitespace.
* - `"none"`: Don't show the link (e.g., text not available).
*
* @param string Message explaining why the diff is hidden.
* @param string|null Force mode, see above.
* @return string Shield markup.
*/
abstract public function renderShield($message, $force = 'default');
abstract protected function renderPropertyChangeHeader();
protected function buildPrimitives($range_start, $range_len) {
$primitives = array();
$hunk_starts = $this->getHunkStartLines();
$mask = $this->getMask();
$gaps = $this->getGaps();
$old = $this->getOldLines();
$new = $this->getNewLines();
$old_render = $this->getOldRender();
$new_render = $this->getNewRender();
$old_comments = $this->getOldComments();
$new_comments = $this->getNewComments();
$size = count($old);
for ($ii = $range_start; $ii < $range_start + $range_len; $ii++) {
if (empty($mask[$ii])) {
list($top, $len) = array_pop($gaps);
$primitives[] = array(
'type' => 'context',
'top' => $top,
'len' => $len,
);
$ii += ($len - 1);
continue;
}
$ospec = array(
'type' => 'old',
'htype' => null,
'cursor' => $ii,
'line' => null,
'oline' => null,
'render' => null,
);
$nspec = array(
'type' => 'new',
'htype' => null,
'cursor' => $ii,
'line' => null,
'oline' => null,
'render' => null,
'copy' => null,
'coverage' => null,
);
if (isset($old[$ii])) {
$ospec['line'] = (int)$old[$ii]['line'];
$nspec['oline'] = (int)$old[$ii]['line'];
$ospec['htype'] = $old[$ii]['type'];
if (isset($old_render[$ii])) {
$ospec['render'] = $old_render[$ii];
}
}
if (isset($new[$ii])) {
$nspec['line'] = (int)$new[$ii]['line'];
$ospec['oline'] = (int)$new[$ii]['line'];
$nspec['htype'] = $new[$ii]['type'];
if (isset($new_render[$ii])) {
$nspec['render'] = $new_render[$ii];
}
}
if (isset($hunk_starts[$ospec['line']])) {
$primitives[] = array(
'type' => 'no-context',
);
}
$primitives[] = $ospec;
$primitives[] = $nspec;
if ($ospec['line'] !== null && isset($old_comments[$ospec['line']])) {
foreach ($old_comments[$ospec['line']] as $comment) {
$primitives[] = array(
'type' => 'inline',
'comment' => $comment,
'right' => false,
);
}
}
if ($nspec['line'] !== null && isset($new_comments[$nspec['line']])) {
foreach ($new_comments[$nspec['line']] as $comment) {
$primitives[] = array(
'type' => 'inline',
'comment' => $comment,
'right' => true,
);
}
}
if ($hunk_starts && ($ii == $size - 1)) {
$primitives[] = array(
'type' => 'no-context',
);
}
}
if ($this->isOneUpRenderer()) {
$primitives = $this->processPrimitivesForOneUp($primitives);
}
return $primitives;
}
private function processPrimitivesForOneUp(array $primitives) {
// Primitives come out of buildPrimitives() in two-up format, because it
// is the most general, flexible format. To put them into one-up format,
// we need to filter and reorder them. In particular:
//
// - We discard unchanged lines in the old file; in one-up format, we
// render them only once.
// - We group contiguous blocks of old-modified and new-modified lines, so
// they render in "block of old, block of new" order instead of
// alternating old and new lines.
$out = array();
$old_buf = array();
$new_buf = array();
foreach ($primitives as $primitive) {
$type = $primitive['type'];
if ($type == 'old') {
if (!$primitive['htype']) {
// This is a line which appears in both the old file and the new
// file, or the spacer corresponding to a line added in the new file.
// Ignore it when rendering a one-up diff.
continue;
}
if ($new_buf) {
$out[] = $new_buf;
$new_buf = array();
}
$old_buf[] = $primitive;
} else if ($type == 'new') {
if ($primitive['line'] === null) {
// This is an empty spacer corresponding to a line removed from the
// old file. Ignore it when rendering a one-up diff.
continue;
}
if ($old_buf) {
$out[] = $old_buf;
$old_buf = array();
}
$new_buf[] = $primitive;
} else if ($type == 'context' || $type == 'no-context') {
$out[] = $old_buf;
$out[] = $new_buf;
$old_buf = array();
$new_buf = array();
$out[] = array($primitive);
} else if ($type == 'inline') {
$out[] = $old_buf;
$out[] = $new_buf;
$old_buf = array();
$new_buf = array();
$out[] = array($primitive);
} else {
throw new Exception("Unknown primitive type '{$primitive}'!");
}
}
$out[] = $old_buf;
$out[] = $new_buf;
$out = array_mergev($out);
return $out;
}
}
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