Les tests ne sont pas des tests (au sens de tests unitaires) de l'outil (non encore existant) . Ce sont des essais des idées germantes, des Proof-of-Concept (PoC).

git-svn-id: file:///var/svn/2012-php-weave/trunk@3 d972a294-176a-4cf9-8ea1-fcd5b0c30f5c

5 files changed, 168 insertions, 0 deletions

diff --git a/poc/poc01-parsing-includes/src/composer.json b/poc/poc01-parsing-includes/src/composer.json
new file mode 100644
index 0000000..a366739
--- /dev/null
+++ b/poc/poc01-parsing-includes/src/composer.json
@@ -0,0 +1,6 @@
+{
+	"require": {
+		"nikic/php-parser": "0.9.2"
+	}
+}
+
diff --git a/poc/poc01-parsing-includes/src/get_deps.sh b/poc/poc01-parsing-includes/src/get_deps.sh
new file mode 100755
index 0000000..67c84c3
--- /dev/null
+++ b/poc/poc01-parsing-includes/src/get_deps.sh
@@ -0,0 +1,2 @@
+#!/bin/sh
+php ../../../composer.phar install
diff --git a/poc/poc01-parsing-includes/src/php-weave/main.php b/poc/poc01-parsing-includes/src/php-weave/main.php
new file mode 100644
index 0000000..2a4df55
--- /dev/null
+++ b/poc/poc01-parsing-includes/src/php-weave/main.php
@@ -0,0 +1,64 @@
+<?php
+require '../vendor/nikic/php-parser/lib/bootstrap.php';
+require './visitors.inc.php';
+
+ini_set('xdebug.max_nesting_level', 2000);
+
+function dbg($indent, $text) {
+	for($i=0;$i<$indent;$i++) echo ".";
+	echo "$text\n";
+}
+
+function recursive_parse($src_filepath, $stmts1_filepath, $stmts2_filepath, $level=0) {
+	global $parser,$nodeDumper;
+
+	try {
+		dbg($level,"Parsing '$src_filepath'");
+		$stmts = $parser->parse(file_get_contents($src_filepath));
+
+		if (strlen($stmts1_filepath) > 0 ) {
+			dbg($level,"Dumping1 '$src_filepath' AST to '$stmts1_filepath'");
+			file_put_contents($stmts1_filepath, $nodeDumper->dump($stmts));
+		}
+
+		dbg($level,"Transforming '$src_filepath'");
+		$traverser = new PHPParser_NodeTraverser;
+/*
+		$traverser->addVisitor(new PHPParser_NodeVisitor_NameResolver);
+		$traverser->addVisitor(new NodeVisitor_NamespaceConverter);
+*/
+		// FIXME : getcwd is quick and dirty here
+		$traverser->addVisitor(new NodeVisitor_PreprocessInclude($level, getcwd(), $src_filepath));
+		$stmts = $traverser->traverse($stmts);
+		$traverser=null; //Destroy
+
+		if (strlen($stmts2_filepath) > 0) {	
+			dbg($level,"Dumping2 '$src_filepath' AST to '$stmts2_filepath'");
+			file_put_contents($stmts2_filepath, $nodeDumper->dump($stmts));
+		}
+
+	} catch (PHPParser_Error $e) {
+	    echo 'Parse Error: ', $e->getMessage();
+	}
+	return $stmts;
+}
+
+
+// Main
+$src_filepath = "./main.php";
+#$src_filepath = "./to_parse.php";
+$stmts1_filepath = "out/stmts1.ast";
+$stmts2_filepath = "out/stmts2.ast";
+$dest_filepath = "out/result.php";
+
+$parser = new PHPParser_Parser(new PHPParser_Lexer);
+$nodeDumper = new PHPParser_NodeDumper;
+
+$level=0;
+$stmts=recursive_parse($src_filepath, $stmts1_filepath, $stmts2_filepath);
+
+dbg(0,"Outputing '$dest_filepath'");
+$prettyPrinter = new PHPParser_PrettyPrinter_Zend;
+file_put_contents($dest_filepath, "<?php\n" . $prettyPrinter->prettyPrint($stmts) . "\n?>");
+
+?>
diff --git a/poc/poc01-parsing-includes/src/php-weave/to_parse.php b/poc/poc01-parsing-includes/src/php-weave/to_parse.php
new file mode 100644
index 0000000..7b953d5
--- /dev/null
+++ b/poc/poc01-parsing-includes/src/php-weave/to_parse.php
@@ -0,0 +1,5 @@
+<?php
+if (1){
+include('./inc.php');
+}
+?>
diff --git a/poc/poc01-parsing-includes/src/php-weave/visitors.inc.php b/poc/poc01-parsing-includes/src/php-weave/visitors.inc.php
new file mode 100644
index 0000000..3f997ad
--- /dev/null
+++ b/poc/poc01-parsing-includes/src/php-weave/visitors.inc.php
@@ -0,0 +1,91 @@
+<?php
+/*
+class NodeVisitor_NamespaceConverter extends PHPParser_NodeVisitorAbstract
+{
+	public function leaveNode(PHPParser_Node $node) {
+		if ($node instanceof PHPParser_Node_Name) {
+			return new PHPParser_Node_Name($node->toString('_'));
+		} elseif ($node instanceof PHPParser_Node_Stmt_Class
+				|| $node instanceof PHPParser_Node_Stmt_Interface
+				|| $node instanceof PHPParser_Node_Stmt_Function) {
+			$node->name = $node->namespacedName->toString('_');
+		} elseif ($node instanceof PHPParser_Node_Stmt_Const) {
+			foreach ($node->consts as $const) {
+				$const->name = $const->namespacedName->toString('_');
+			}
+		} elseif ($node instanceof PHPParser_Node_Stmt_Namespace) {
+			// returning an array merges is into the parent array
+			return $node->stmts;
+		} elseif ($node instanceof PHPParser_Node_Stmt_Use) {
+			// returning false removed the node altogether
+			return false;
+		}
+	}
+}
+*/
+
+class NodeVisitor_PreprocessInclude extends PHPParser_NodeVisitorAbstract {
+	protected $level;
+	protected $cwd;
+	protected $filepath;
+	protected $prettyPrinter;
+
+	public function __construct($level, $cwd, $filepath) {
+		$this->level=$level;
+		$this->cwd=$cwd;
+		$this->filepath=$filepath;
+		$this->prettyPrinter = new PHPParser_PrettyPrinter_Zend;
+	}
+
+	protected function resolveIncludePath($node) {
+		//FIXME : Quick and dirty
+		// no classpath checks...
+		// no check if compound value like "dirname(__FILE__) . '/PHPParser/Autoloader.php'"
+		return $node->expr->value;
+	}
+
+	public function enterNode(PHPParser_Node $node) {
+                if ($node instanceof PHPParser_Node_Expr_Include) {
+			// Already processed, go out (occurs if an unresolved include has left as is in the previous recursion level)
+			if (is_array($node->attributes) && array_key_exists('NodeVisitor_PreprocessInclude', $node->attributes)) return $node;
+
+			switch($node->type) {
+				case PHPParser_Node_Expr_Include::TYPE_INCLUDE:
+				case PHPParser_Node_Expr_Include::TYPE_REQUIRE:
+					$once=0;
+					break;
+				case PHPParser_Node_Expr_Include::TYPE_INCLUDE_ONCE:
+				case PHPParser_Node_Expr_Include::TYPE_REQUIRE_ONCE:
+					$once=1;
+					echo "TODO : include_once or require_once\n";
+					break;
+				default:
+					echo "FIXME : BUG NodeVisitor_PreprocessInclude::enterNode !!\n";
+					return $node;
+			}
+
+			$path=$this->resolveIncludePath($node);
+
+			//FIXME : No infinite recursion check like test.php contains include('./test.php');
+			// Preprocess include if readable
+			$comment_suffix=" */";
+			if ( ($this->level < 3) && is_readable($path)) {
+				$comment_prefix="/* ";
+				//FIXME : use a closure or sort of here (dependancy injection)
+				//$stmts=recursive_parse($path, "out/rec.out1", "out/rec.out2", $this->level+1);
+				$stmts=recursive_parse($path, "", "", $this->level+1);
+			} else {
+				$comment_prefix="/* UNRESOLVED : ";
+				$node->attributes['NodeVisitor_PreprocessInclude']='unresolved';
+				$stmts=array($node); // Caution : can cause infinite loop (will be tried at the next step)
+			}
+
+			$comment= new PHPParser_Comment($comment_prefix . $this->prettyPrinter->prettyPrint(array($node)) . $comment_suffix);
+
+			// FIXME : Get out this if() that is a trick for not returning here an array instead of a node
+			return new PHPParser_Node_Stmt_If(new PHPParser_Node_Scalar_LNumber(1),array('stmts'=>$stmts),array('comments'=>array($comment)));
+		}
+
+	}
+}
+