1: <?php
2:
3: 4: 5: 6:
7:
8: namespace Latte\Macros;
9:
10: use Latte;
11: use Latte\MacroNode;
12: use Latte\PhpWriter;
13: use Latte\CompileException;
14:
15:
16: 17: 18:
19: class BlockMacros extends MacroSet
20: {
21:
22: private $namedBlocks = array();
23:
24:
25: private $extends;
26:
27:
28: public static function install(Latte\Compiler $compiler)
29: {
30: $me = new static($compiler);
31: $me->addMacro('include', array($me, 'macroInclude'));
32: $me->addMacro('includeblock', array($me, 'macroIncludeBlock'));
33: $me->addMacro('extends', array($me, 'macroExtends'));
34: $me->addMacro('layout', array($me, 'macroExtends'));
35: $me->addMacro('block', array($me, 'macroBlock'), array($me, 'macroBlockEnd'));
36: $me->addMacro('define', array($me, 'macroBlock'), array($me, 'macroBlockEnd'));
37: $me->addMacro('snippet', array($me, 'macroBlock'), array($me, 'macroBlockEnd'));
38: $me->addMacro('snippetArea', array($me, 'macroBlock'), array($me, 'macroBlockEnd'));
39: $me->addMacro('ifset', array($me, 'macroIfset'), '}');
40: $me->addMacro('elseifset', array($me, 'macroIfset'), '}');
41: }
42:
43:
44: 45: 46: 47:
48: public function initialize()
49: {
50: $this->namedBlocks = array();
51: $this->extends = NULL;
52: }
53:
54:
55: 56: 57: 58:
59: public function finalize()
60: {
61:
62: $last = $this->getCompiler()->getMacroNode();
63: if ($last && $last->name === 'block') {
64: $this->getCompiler()->closeMacro($last->name);
65: }
66:
67: $epilog = $prolog = array();
68:
69: if ($this->namedBlocks) {
70: foreach ($this->namedBlocks as $name => $code) {
71: $func = '_lb' . substr(md5($this->getCompiler()->getTemplateId() . $name), 0, 10) . '_' . preg_replace('#[^a-z0-9_]#i', '_', $name);
72: $snippet = $name[0] === '_';
73: $prolog[] = "//\n// block $name\n//\n"
74: . "if (!function_exists(\$_b->blocks[" . var_export($name, TRUE) . "][] = '$func')) { "
75: . "function $func(\$_b, \$_args) { foreach (\$_args as \$__k => \$__v) \$\$__k = \$__v"
76: . ($snippet ? '; $_control->redrawControl(' . var_export((string) substr($name, 1), TRUE) . ', FALSE)' : '')
77: . "\n?>$code<?php\n}}";
78: }
79: $prolog[] = "//\n// end of blocks\n//";
80: }
81:
82: if ($this->namedBlocks || $this->extends) {
83: $prolog[] = '// template extending';
84:
85: $prolog[] = '$_l->extends = '
86: . ($this->extends ? $this->extends : 'empty($_g->extended) && isset($_control) && $_control instanceof Nette\Application\UI\Presenter ? $_control->findLayoutTemplateFile() : NULL')
87: . '; $_g->extended = TRUE;';
88:
89: $prolog[] = 'if ($_l->extends) { ' . ($this->namedBlocks ? 'ob_start();' : 'return $template->renderChildTemplate($_l->extends, get_defined_vars());') . '}';
90: }
91:
92: return array(implode("\n\n", $prolog), implode("\n", $epilog));
93: }
94:
95:
96:
97:
98:
99: 100: 101:
102: public function macroInclude(MacroNode $node, PhpWriter $writer)
103: {
104: $destination = $node->tokenizer->fetchWord();
105: if (!preg_match('~#|[\w-]+\z~A', $destination)) {
106: return FALSE;
107: }
108:
109: $destination = ltrim($destination, '#');
110: $parent = $destination === 'parent';
111: if ($destination === 'parent' || $destination === 'this') {
112: for ($item = $node->parentNode; $item && $item->name !== 'block' && !isset($item->data->name); $item = $item->parentNode);
113: if (!$item) {
114: throw new CompileException("Cannot include $destination block outside of any block.");
115: }
116: $destination = $item->data->name;
117: }
118:
119: $name = strpos($destination, '$') === FALSE ? var_export($destination, TRUE) : $destination;
120: if (isset($this->namedBlocks[$destination]) && !$parent) {
121: $cmd = "call_user_func(reset(\$_b->blocks[$name]), \$_b, %node.array? + get_defined_vars())";
122: } else {
123: $cmd = 'Latte\Macros\BlockMacrosRuntime::callBlock' . ($parent ? 'Parent' : '') . "(\$_b, $name, %node.array? + " . ($parent ? 'get_defined_vars' : '$template->getParameters') . '())';
124: }
125:
126: if ($node->modifiers) {
127: return $writer->write("ob_start(); $cmd; echo %modify(ob_get_clean())");
128: } else {
129: return $writer->write($cmd);
130: }
131: }
132:
133:
134: 135: 136:
137: public function macroIncludeBlock(MacroNode $node, PhpWriter $writer)
138: {
139: return $writer->write('ob_start(); $_b->templates[%var]->renderChildTemplate(%node.word, %node.array? + get_defined_vars()); echo rtrim(ob_get_clean())',
140: $this->getCompiler()->getTemplateId());
141: }
142:
143:
144: 145: 146:
147: public function macroExtends(MacroNode $node, PhpWriter $writer)
148: {
149: if (!$node->args) {
150: throw new CompileException("Missing destination in {{$node->name}}");
151: }
152: if (!empty($node->parentNode)) {
153: throw new CompileException("{{$node->name}} must be placed outside any macro.");
154: }
155: if ($this->extends !== NULL) {
156: throw new CompileException("Multiple {{$node->name}} declarations are not allowed.");
157: }
158: if ($node->args === 'none') {
159: $this->extends = 'FALSE';
160: } elseif ($node->args === 'auto') {
161: $this->extends = '$_presenter->findLayoutTemplateFile()';
162: } else {
163: $this->extends = $writer->write('%node.word%node.args');
164: }
165: return;
166: }
167:
168:
169: 170: 171: 172: 173: 174:
175: public function macroBlock(MacroNode $node, PhpWriter $writer)
176: {
177: $name = $node->tokenizer->fetchWord();
178:
179: if ($node->name === '#') {
180: trigger_error('Shortcut {#block} is deprecated.', E_USER_DEPRECATED);
181:
182: } elseif ($node->name === 'block' && $name === FALSE) {
183: return $node->modifiers === '' ? '' : 'ob_start()';
184: }
185:
186: $node->data->name = $name = ltrim($name, '#');
187: if ($name == NULL) {
188: if ($node->name === 'define') {
189: throw new CompileException('Missing block name.');
190: }
191:
192: } elseif (strpos($name, '$') !== FALSE) {
193: if ($node->name === 'snippet') {
194: for ($parent = $node->parentNode; $parent && !($parent->name === 'snippet' || $parent->name === 'snippetArea'); $parent = $parent->parentNode);
195: if (!$parent) {
196: throw new CompileException('Dynamic snippets are allowed only inside static snippet/snippetArea.');
197: }
198: $parent->data->dynamic = TRUE;
199: $node->data->leave = TRUE;
200: $node->closingCode = "<?php \$_l->dynSnippets[\$_l->dynSnippetId] = ob_get_flush() ?>";
201:
202: if ($node->prefix) {
203: $node->attrCode = $writer->write("<?php echo ' id=\"' . (\$_l->dynSnippetId = \$_control->getSnippetId({$writer->formatWord($name)})) . '\"' ?>");
204: return $writer->write('ob_start()');
205: }
206: $tag = trim($node->tokenizer->fetchWord(), '<>');
207: $tag = $tag ? $tag : 'div';
208: $node->closingCode .= "\n</$tag>";
209: return $writer->write("?>\n<$tag id=\"<?php echo \$_l->dynSnippetId = \$_control->getSnippetId({$writer->formatWord($name)}) ?>\"><?php ob_start()");
210:
211: } else {
212: $node->data->leave = TRUE;
213: $fname = $writer->formatWord($name);
214: $node->closingCode = '<?php }} ' . ($node->name === 'define' ? '' : "call_user_func(reset(\$_b->blocks[$fname]), \$_b, get_defined_vars())") . ' ?>';
215: $func = '_lb' . substr(md5($this->getCompiler()->getTemplateId() . $name), 0, 10) . '_' . preg_replace('#[^a-z0-9_]#i', '_', $name);
216: return "\n\n//\n// block $name\n//\n"
217: . "if (!function_exists(\$_b->blocks[$fname]['{$this->getCompiler()->getTemplateId()}'] = '$func')) { "
218: . "function $func(\$_b, \$_args) { foreach (\$_args as \$__k => \$__v) \$\$__k = \$__v";
219: }
220: }
221:
222:
223: if ($node->name === 'snippet' || $node->name === 'snippetArea') {
224: if ($node->prefix && isset($node->htmlNode->attrs['id'])) {
225: throw new CompileException('Cannot combine HTML attribute id with n:snippet.');
226: }
227: $node->data->name = $name = '_' . $name;
228: }
229:
230: if (isset($this->namedBlocks[$name])) {
231: throw new CompileException("Cannot redeclare static {$node->name} '$name'");
232: }
233:
234: $prolog = $this->namedBlocks ? '' : "if (\$_l->extends) { ob_end_clean(); return \$template->renderChildTemplate(\$_l->extends, get_defined_vars()); }\n";
235: $this->namedBlocks[$name] = TRUE;
236:
237: $include = 'call_user_func(reset($_b->blocks[%var]), $_b, ' . (($node->name === 'snippet' || $node->name === 'snippetArea') ? '$template->getParameters()' : 'get_defined_vars()') . ')';
238: if ($node->modifiers) {
239: $include = "ob_start(); $include; echo %modify(ob_get_clean())";
240: }
241:
242: if ($node->name === 'snippet') {
243: if ($node->prefix) {
244: $node->attrCode = $writer->write('<?php echo \' id="\' . $_control->getSnippetId(%var) . \'"\' ?>', (string) substr($name, 1));
245: return $writer->write($prolog . $include, $name);
246: }
247: $tag = trim($node->tokenizer->fetchWord(), '<>');
248: $tag = $tag ? $tag : 'div';
249: return $writer->write("$prolog ?>\n<$tag id=\"<?php echo \$_control->getSnippetId(%var) ?>\"><?php $include ?>\n</$tag><?php ",
250: (string) substr($name, 1), $name
251: );
252:
253: } elseif ($node->name === 'define') {
254: return $prolog;
255:
256: } else {
257: return $writer->write($prolog . $include, $name);
258: }
259: }
260:
261:
262: 263: 264: 265: 266: 267:
268: public function macroBlockEnd(MacroNode $node, PhpWriter $writer)
269: {
270: if (isset($node->data->name)) {
271: if ($node->name === 'snippet' && $node->prefix === MacroNode::PREFIX_NONE
272: && preg_match('#^.*? n:\w+>\n?#s', $node->content, $m1) && preg_match('#[ \t]*<[^<]+\z#s', $node->content, $m2)
273: ) {
274: $node->openingCode = $m1[0] . $node->openingCode;
275: $node->content = substr($node->content, strlen($m1[0]), -strlen($m2[0]));
276: $node->closingCode .= $m2[0];
277: }
278:
279: if (empty($node->data->leave)) {
280: if ($node->name === 'snippetArea') {
281: $node->content = "<?php \$_control->snippetMode = isset(\$_snippetMode) && \$_snippetMode; ?>{$node->content}<?php \$_control->snippetMode = FALSE; ?>";
282: }
283: if (!empty($node->data->dynamic)) {
284: $node->content .= '<?php if (isset($_l->dynSnippets)) return $_l->dynSnippets; ?>';
285: }
286: if ($node->name === 'snippetArea') {
287: $node->content .= '<?php return FALSE; ?>';
288: }
289: $this->namedBlocks[$node->data->name] = $tmp = rtrim(ltrim($node->content, "\n"), " \t");
290: $node->content = substr_replace($node->content, $node->openingCode . "\n", strspn($node->content, "\n"), strlen($tmp));
291: $node->openingCode = '<?php ?>';
292: }
293:
294: } elseif ($node->modifiers) {
295: return $writer->write('echo %modify(ob_get_clean())');
296: }
297: }
298:
299:
300: 301: 302: 303:
304: public function macroIfset(MacroNode $node, PhpWriter $writer)
305: {
306: if (!preg_match('~#|[\w-]+\z~A', $node->args)) {
307: return FALSE;
308: }
309: $list = array();
310: while (($name = $node->tokenizer->fetchWord()) !== FALSE) {
311: $list[] = preg_match('~#|[\w-]+\z~A', $name)
312: ? '$_b->blocks["' . ltrim($name, '#') . '"]'
313: : $writer->formatArgs(new Latte\MacroTokens($name));
314: }
315: return ($node->name === 'elseifset' ? '} else' : '')
316: . 'if (isset(' . implode(', ', $list) . ')) {';
317: }
318:
319: }
320: