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-rw-r--r--src/ste/Transcompiler.php114
1 files changed, 57 insertions, 57 deletions
diff --git a/src/ste/Transcompiler.php b/src/ste/Transcompiler.php
index 9961b15..2519406 100644
--- a/src/ste/Transcompiler.php
+++ b/src/ste/Transcompiler.php
@@ -11,7 +11,7 @@ namespace kch42\ste;
*/
class Transcompiler {
private static $builtins = NULL;
-
+
public static function tempvar($typ) {
return $typ . '_' . str_replace('.', '_', uniqid('', true));
}
@@ -20,7 +20,7 @@ class Transcompiler {
if(self::$builtins !== NULL) {
return;
}
-
+
self::$builtins = array(
"if" => array("\\kch42\\ste\\Transcompiler", "builtin_if"),
"cmp" => array("\\kch42\\ste\\Transcompiler", "builtin_cmp"),
@@ -41,13 +41,13 @@ class Transcompiler {
"calc" => array("\\kch42\\ste\\Transcompiler", "builtin_calc")
);
}
-
+
private static function builtin_if($ast) {
$output = "";
$condition = array();
$then = NULL;
$else = NULL;
-
+
foreach($ast->sub as $node) {
if(($node instanceof TagNode) and ($node->name == "then")) {
$then = $node->sub;
@@ -57,11 +57,11 @@ class Transcompiler {
$condition[] = $node;
}
}
-
+
if($then === NULL) {
throw new ParseCompileError("self::Transcompile error: Missing <ste:then> in <ste:if>.", $ast->tpl, $ast->offset);
}
-
+
$output .= "\$outputstack[] = \"\";\n\$outputstack_i++;\n";
$output .= self::_transcompile($condition);
$output .= "\$outputstack_i--;\nif(\$ste->evalbool(array_pop(\$outputstack)))\n{\n";
@@ -83,9 +83,9 @@ class Transcompiler {
array('gt', '>'),
array('gte', '>=')
);
-
+
$code = "";
-
+
if(isset($ast->params["var_b"])) {
list($val, $pre) = self::_transcompile($ast->params["var_b"], true);
$code .= $pre;
@@ -96,7 +96,7 @@ class Transcompiler {
} else {
throw new ParseCompileError("self::Transcompile error: neiter var_b nor text_b set in <ste:cmp>.", $ast->tpl, $ast->offset);
}
-
+
if(isset($ast->params["var_a"])) {
list($val, $pre) = self::_transcompile($ast->params["var_a"], true);
$code .= $pre;
@@ -107,7 +107,7 @@ class Transcompiler {
} else {
throw new ParseCompileError("self::Transcompile error: neiter var_a nor text_a set in <ste:cmp>.", $ast->tpl, $ast->offset);
}
-
+
if(!isset($ast->params["op"])) {
throw new ParseCompileError("self::Transcompile error: op not given in <ste:cmp>.", $ast->tpl, $ast->offset);
}
@@ -160,14 +160,14 @@ class Transcompiler {
list($val, $pre) = self::_transcompile($ast->params["start"], true);
$code .= $pre;
$code .= "\$${loopname}_start = " . $val . ";\n";
-
+
if(empty($ast->params["stop"])) {
throw new ParseCompileError("self::Transcompile error: Missing 'end' parameter in <ste:for>.", $ast->tpl, $ast->offset);
}
list($val, $pre) = self::_transcompile($ast->params["stop"], true);
$code .= $pre;
$code .= "\$${loopname}_stop = " . $val . ";\n";
-
+
$step = NULL; /* i.e. not known at compilation time */
if(empty($ast->params["step"])) {
$step = 1;
@@ -178,17 +178,17 @@ class Transcompiler {
$code .= $pre;
$code .= "\$${loopname}_step = " . $val . ";\n";
}
-
+
if(!empty($ast->params["counter"])) {
list($val, $pre) = self::_transcompile($ast->params["counter"], true);
$code .= $pre;
$code .= "\$${loopname}_countername = " . $val . ";\n";
}
-
+
$loopbody = empty($ast->params["counter"]) ? "" : "\$ste->set_var_by_name(\$${loopname}_countername, \$${loopname}_counter);\n";
$loopbody .= self::_transcompile($ast->sub);
$loopbody = self::indent_code("{\n" . self::loopbody(self::indent_code($loopbody)) . "\n}\n");
-
+
if($step === NULL) {
$code .= "if(\$${loopname}_step == 0)\n\tthrow new \\kch42\\ste\\RuntimeError('step can not be 0 in <ste:for>.');\n";
$code .= "if(\$${loopname}_step > 0)\n{\n";
@@ -205,39 +205,39 @@ class Transcompiler {
} else {
$code .= "for(\$${loopname}_counter = \$${loopname}_start; \$${loopname}_counter >= \$${loopname}_stop; \$${loopname}_counter += $step)\n$loopbody\n";
}
-
+
return $code;
}
private static function builtin_foreach($ast) {
$loopname = self::tempvar("foreachloop");
$code = "";
-
+
if(empty($ast->params["array"])) {
throw new ParseCompileError("self::Transcompile Error: array not given in <ste:foreach>.", $ast->tpl, $ast->offset);
}
list($val, $pre) = self::_transcompile($ast->params["array"], true);
$code .= $pre;
$code .= "\$${loopname}_arrayvar = " . $val . ";\n";
-
+
if(empty($ast->params["value"])) {
throw new ParseCompileError("self::Transcompile Error: value not given in <ste:foreach>.", $ast->tpl, $ast->offset);
}
list($val, $pre) = self::_transcompile($ast->params["value"], true);
$code .= $pre;
$code .= "\$${loopname}_valuevar = " . $val . ";\n";
-
+
if(!empty($ast->params["key"])) {
list($val, $pre) = self::_transcompile($ast->params["key"], true);
$code .= $pre;
$code .= "\$${loopname}_keyvar = " . $val . ";\n";
}
-
+
if(!empty($ast->params["counter"])) {
list($val, $pre) = self::_transcompile($ast->params["counter"], true);
$code .= $pre;
$code .= "\$${loopname}_countervar = " . $val . ";\n";
}
-
+
$loopbody = "";
$code .= "\$${loopname}_array = \$ste->get_var_by_name(\$${loopname}_arrayvar);\n";
$code .= "if(!is_array(\$${loopname}_array))\n\t\$${loopname}_array = array();\n";
@@ -245,7 +245,7 @@ class Transcompiler {
$code .= "\$${loopname}_counter = -1;\n";
$loopbody .= "\$${loopname}_counter++;\n\$ste->set_var_by_name(\$${loopname}_countervar, \$${loopname}_counter);\n";
}
-
+
$loop = array();
$else = array();
foreach($ast->sub as $node) {
@@ -255,7 +255,7 @@ class Transcompiler {
$loop[] = $node;
}
}
-
+
$loopbody .= "\$ste->set_var_by_name(\$${loopname}_valuevar, \$${loopname}_value);\n";
if(!empty($ast->params["key"])) {
$loopbody .= "\$ste->set_var_by_name(\$${loopname}_keyvar, \$${loopname}_key);\n";
@@ -263,14 +263,14 @@ class Transcompiler {
$loopbody .= "\n";
$loopbody .= self::_transcompile($loop);
$loopbody = "{\n" . self::loopbody(self::indent_code($loopbody)) . "\n}\n";
-
+
if(!empty($else)) {
$code .= "if(empty(\$${loopname}_array))\n{\n";
$code .= self::indent_code(self::_transcompile($else));
$code .= "\n}\nelse ";
}
$code .= "foreach(\$${loopname}_array as \$${loopname}_key => \$${loopname}_value)\n$loopbody\n";
-
+
return $code;
}
private static function builtin_infloop($ast) {
@@ -286,59 +286,59 @@ class Transcompiler {
if(empty($ast->params["name"])) {
throw new ParseCompileError("self::Transcompile Error: name missing in <ste:block>.", $ast->tpl, $ast->offset);
}
-
+
$blknamevar = self::tempvar("blockname");
-
+
list($val, $code) = self::_transcompile($ast->params["name"], true);
$code .= "\$${blknamevar} = " . $val . ";\n";
-
+
$tmpblk = uniqid("", true);
$code .= "\$ste->blocks['$tmpblk'] = array_pop(\$outputstack);\n\$ste->blockorder[] = '$tmpblk';\n\$outputstack = array('');\n\$outputstack_i = 0;\n";
-
+
$code .= self::_transcompile($ast->sub);
-
+
$code .= "\$ste->blocks[\$${blknamevar}] = array_pop(\$outputstack);\n";
$code .= "if(array_search(\$${blknamevar}, \$ste->blockorder) === false)\n\t\$ste->blockorder[] = \$${blknamevar};\n\$outputstack = array('');\n\$outputstack_i = 0;\n";
-
+
return $code;
}
private static function builtin_load($ast) {
if(empty($ast->params["name"])) {
throw new ParseCompileError("self::Transcompile Error: name missing in <ste:load>.", $ast->tpl, $ast->offset);
}
-
+
list($val, $code) = self::_transcompile($ast->params["name"], true);
$code .= "\$outputstack[\$outputstack_i] .= \$ste->load(" . $val . ");\n";
return $code;
}
private static function builtin_mktag($ast) {
$code = "";
-
+
if(empty($ast->params["name"])) {
throw new ParseCompileError("self::Transcompile Error: name missing in <ste:mktag>.", $ast->tpl, $ast->offset);
}
-
+
$fxbody = "\$outputstack = array(''); \$outputstack_i = 0;\$ste->set_local_var('_tag_parameters', \$params);\n";
-
+
list($tagname, $tagname_pre) = self::_transcompile($ast->params["name"], true);
-
+
$usemandatory = "";
if(!empty($ast->params["mandatory"])) {
$usemandatory = " use (\$mandatory_params)";
$code .= "\$outputstack[] = '';\n\$outputstack_i++;\n";
$code .= self::_transcompile($ast->params["mandatory"]);
$code .= "\$outputstack_i--;\n\$mandatory_params = explode('|', array_pop(\$outputstack));\n";
-
+
$fxbody .= "foreach(\$mandatory_params as \$mp)\n{\n\tif(!isset(\$params[\$mp]))\n\t\tthrow new \\kch42\\ste\\RuntimeError(\"\$mp missing in <ste:\" . $tagname . \">.\");\n}";
}
-
+
$fxbody .= self::_transcompile($ast->sub);
$fxbody .= "return array_pop(\$outputstack);";
-
+
$code .= "\$tag_fx = \$ste->make_closure(function(\$ste, \$params, \$sub)" . $usemandatory . "\n{\n" . self::indent_code($fxbody) . "\n});\n";
$code .= $tagname_pre;
$code .= "\$ste->register_tag($tagname, \$tag_fx);\n";
-
+
return $code;
}
private static function builtin_tagcontent($ast) {
@@ -348,37 +348,37 @@ class Transcompiler {
if(empty($ast->params["var"])) {
throw new ParseCompileError("self::Transcompile Error: var missing in <ste:set>.", $ast->tpl, $ast->offset);
}
-
+
$code = "\$outputstack[] = '';\n\$outputstack_i++;\n";
$code .= self::_transcompile($ast->sub);
$code .= "\$outputstack_i--;\n";
-
+
list($val, $pre) = self::_transcompile($ast->params["var"], true);
$code .= $pre;
$code .= "\$ste->set_var_by_name(" . $val . ", array_pop(\$outputstack));\n";
-
+
return $code;
}
private static function builtin_setlocal($ast) {
if(empty($ast->params["var"])) {
throw new ParseCompileError("self::Transcompile Error: var missing in <ste:set>.", $ast->tpl, $ast->offset);
}
-
+
$code = "\$outputstack[] = '';\n\$outputstack_i++;\n";
$code .= self::_transcompile($ast->sub);
$code .= "\$outputstack_i--;\n";
-
+
list($val, $pre) = self::_transcompile($ast->params["var"], true);
$code .= $pre;
$code .= "\$ste->set_local_var(" . $val . ", array_pop(\$outputstack));\n";
-
+
return $code;
}
private static function builtin_get($ast) {
if(empty($ast->params["var"])) {
throw new ParseCompileError("self::Transcompile Error: var missing in <ste:get>.", $ast->tpl, $ast->offset);
}
-
+
list($val, $pre) = self::_transcompile($ast->params["var"], true);
return "$pre\$outputstack[\$outputstack_i] .= \$ste->get_var_by_name(" . $val . ");";
}
@@ -386,10 +386,10 @@ class Transcompiler {
$code = "\$outputstack[] = '';\n\$outputstack_i++;\n";
$code .= self::_transcompile($ast->sub);
$code .= "\$outputstack_i--;\n\$outputstack[\$outputstack_i] .= \$ste->calc(array_pop(\$outputstack));\n";
-
+
return $code;
}
-
+
private static function indent_code($code) {
return implode(
"\n",
@@ -403,9 +403,9 @@ class Transcompiler {
private static function _transcompile($ast, $avoid_outputstack = false, $in_args = false) { /* The real self::transcompile function, does not add boilerplate code. */
$code = "";
-
+
$text_and_var_buffer = array();
-
+
foreach($ast as $node) {
if($node instanceof TextNode) {
$text_and_var_buffer[] = '"' . Misc::escape_text($node->text) . '"';
@@ -425,34 +425,34 @@ class Transcompiler {
} else {
$paramarray = self::tempvar("parameters");
$code .= "\$$paramarray = array();\n";
-
+
foreach($node->params as $pname => $pcontent) {
list($pval, $pre) = self::_transcompile($pcontent, true, true);
$code .= $pre . "\$${paramarray}['" . Misc::escape_text($pname) . "'] = " . $pval . ";\n";
}
-
+
$code .= "\$outputstack[\$outputstack_i] .= \$ste->call_tag('" . Misc::escape_text($node->name) . "', \$${paramarray}, ";
$code .= empty($node->sub) ? "function(\$ste) { return ''; }" : ("\$ste->make_closure(" . self::transcompile($node->sub) . ")");
$code .= ");\n";
}
}
}
-
+
if($avoid_outputstack && ($code == "")) {
return array(implode (" . ", $text_and_var_buffer), "");
}
-
+
if(!empty($text_and_var_buffer)) {
$code .= "\$outputstack[\$outputstack_i] .= ". implode (" . ", $text_and_var_buffer) . ";\n";
}
-
+
if($avoid_outputstack) {
$tmpvar = self::tempvar("tmp");
$code = "\$outputstack[] = '';\n\$outputstack_i++;" . $code;
$code .= "\$$tmpvar = array_pop(\$outputstack);\n\$outputstack_i--;\n";
return array("\$$tmpvar", $code);
}
-
+
return $code;
}
generated by cgit v1.2.3-54-g00ecf (git 2.44.0) at 2024-05-05 17:52:18 +0000