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<?php
require '../vendor/nikic/php-parser/lib/bootstrap.php';
function dbg($indent, $text) {
for($i=0;$i<$indent;$i++) echo ".";
echo "$text\n";
}
abstract class AbstractWeaver {
protected $parser;
protected $nodeDumper;
protected $prettyPrinter;
protected $ast_dump_before_walk;
protected $ast_dump_after_walk;
public function __construct() {
$this->parser = new PHPParser_Parser(new PHPParser_Lexer);
$this->nodeDumper = new PHPParser_NodeDumper;
$this->prettyPrinter = new PHPParser_PrettyPrinter_Zend;
$this->ast_dump_before_walk="";
$this->ast_dump_after_walk="";
}
public function setASTDumpFiles($ast_dump_before_walk, $ast_dump_after_walk) {
// Set file to "" to prevent AST dumping
$this->$ast_dump_before_walk=$ast_dump_before_walk;
$this->$ast_dump_after_walk=$ast_dump_after_walk;
}
public function runAllSteps($sourcetree_rootpath, $cache_path, $result_path) {
try {
$step='detectFramework';
$fw_props=$this->detectFramework($sourcetree_rootpath);
$step='parseFrameworkConfig';
$fw_conf=$this->parseFrameworkConfig($fw_props);
$step='parseFrameworkCode';
$fw_extra=$this->parseFrameworkCode($fw_props, $fw_conf, $cache_path);
$step='parseApplicationCode';
$app_extra=$this->parseApplicationCode($fw_props, $fw_conf, $fw_extra, $cache_path);
$step='computePageList';
$app_pages=$this->computePageList($fw_props, $fw_conf, $fw_extra, $app_extra);
$step='outputMappingFile';
$this->outputMappingFile($app_pages, $result_path);
foreach ($app_pages as $page=>$page_props) {
$step="makePageFullAST of '$page'";
$page_full_ast=$this->makePageFullAST($page, $page_props, $fw_props, $fw_conf, $fw_extra, $app_extra, $cache_path);
$step="analysePageAST of '$page'";
$page_annotated_ast=$this->analysePageAST($page_full_ast, $page, $page_props, $fw_props, $fw_conf, $fw_extra, $app_extra, $cache_path);
$step="throwDeadCode of '$page'";
$this->throwDeadCode($page_annotated_ast);
$step="weaveCode of '$page'";
$out_ast=$this->weaveCode($page_annotated_ast);
$page_dest_path=$this->makeDestPath($page, $result_path);
$step="prettyPrint to '$page_dest_path'";
$this->prettyPrint($out_ast, $page_dest_path);
}
} catch (Exception $e) {
echo "Step '$step' failure : ", $e->getMessage();
}
}
public function makeDestPath($page, $result_path) {
return $result_path . '/' . str_replace('/', '_', $page) . ".php";
}
public function parseAndWalk($src_filepath, $traverser, $env=array(), $level=0) {
/* Parse a file et traverse the AST.
* Could be recursive if a traverser call again parseAndWalk for example when finding a include() directive
* The main call should be in this case :
* $w=new XXXWeaver;
* $nv=new NodeVisitor_XXX($w); // The node visitor
* $t=new PHPParser_NodeTraverser; $t->addVisitor($nv);
* w->parseAndWalk($src_mainfile, $t, array('cwd'=>dirname($src_mainfile));
*/
try {
dbg($level,"Parsing '$src_filepath'");
$stmts = $this->parser->parse(file_get_contents($src_filepath));
$this->dumpAST($stmts, $src_filepath, $this->ast_dump_before_walk);
if ($traverser) {
dbg($level,"Transforming '$src_filepath'");
$stmts = $traverser->traverse($stmts);
$traverser=null; //Destroy
}
$this->dumpAST($stmts, $src_filepath, $this->ast_dump_after_walk);
} catch (PHPParser_Error $e) {
echo 'Parse Error: ', $e->getMessage();
}
return $stmts;
}
public function prettyPrint($ast, $dest_filepath) {
dbg(0,"Outputing '$dest_filepath'");
file_put_contents($dest_filepath, "<?php\n" . $this->prettyPrinter->prettyPrint($ast) . "\n?>");
}
public function dumpAST($ast, $ast_title, $dest_filepath) {
if (is_array($ast) && strlen($dest_filepath) > 0 ) {
dbg($level,"Dumping '$ast_title,' AST to '$dest_filepath'");
file_put_contents($dest_filepath, $this->nodeDumper->dump($ast));
}
}
// Framework specific code
abstract public function detectFramework($sourcetree_rootpath);
abstract public function parseFrameworkConfig($fw_props);
abstract public function parseFrameworkCode($fw_props, $fw_conf, $cache_path);
abstract public function parseApplicationCode($fw_props, $fw_conf, $fw_extra, $cache_path);
abstract public function computePageList($fw_props, $fw_conf, $fw_extra, $app_extra);
abstract public function outputMappingFile($app_pages, $result_path);
abstract public function makePageFullAST($page, $page_props, $fw_props, $fw_conf, $fw_extra, $app_extra, $cache_path);
abstract public function analysePageAST($page_full_ast, $page, $page_props, $fw_props, $fw_conf, $fw_extra, $app_extra, $cache_path);
abstract public function throwDeadCode(&$page_annotated_ast);
abstract public function weaveCode($page_annotated_ast);
}
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