protected function escapeExpression(Expression $expr)
{
// check if we should _not_ escape this expression
if ($expr instanceof Expressions\MethodCall && $expr->getMethodName() === 'raw') {
return $expr->getArguments()[0];
}
// check if $expr is already wrapped in an escape call
if ($expr instanceof Expressions\MethodCall && $expr->getMethodName() === 'escape') {
return $expr;
}
// TODO: remove this hack
if ($expr instanceof Expressions\MethodCall) {
return $expr;
}
// binary expression either return a boolean or a numeric value, so they should never be escaped
if ($expr instanceof Expressions\Binary) {
return $expr;
}
// TODO: simple expressions can be escaped at compile time
// wrap in an escape call
return new Expressions\MethodCall('escape', [$expr]);
}
/**
* @return string
*/
public function toString()
{
return $this->operation . " " . $this->expression->toString();
}
/**
* @return string
*/
public function toString()
{
return $this->expression->toString() . "." . $this->attributeName;
}
protected function expression(Expression $expr)
{
if ($expr instanceof Expressions\Binary) {
$this->codeEmitter->raw('(');
$this->expression($expr->getLeft());
$this->codeEmitter->raw(' ' . $expr->getOperation() . ' ');
$this->expression($expr->getRight());
$this->codeEmitter->raw(')');
} else {
if ($expr instanceof Expressions\Unary) {
$showParens = !$this->canParensBeOmittedFor($expr->getExpression());
$this->codeEmitter->raw($expr->getOperation());
if ($showParens) {
$this->codeEmitter->raw('(');
}
$this->expression($expr->getExpression());
if ($showParens) {
$this->codeEmitter->raw(')');
}
} else {
if ($expr instanceof Expressions\MethodCall) {
$this->codeEmitter->raw('helpers' . $this->createJsVariableDereference($expr->getMethodName()) . '(');
$arguments = $expr->getArguments();
for ($i = 0; $i < count($arguments); $i++) {
$this->expression($arguments[$i]);
if ($i < count($arguments) - 1) {
$this->codeEmitter->raw(', ');
}
}
$this->codeEmitter->raw(')');
} else {
if ($expr instanceof Expressions\GetAttribute) {
$this->expression($expr->getExpression());
$this->codeEmitter->raw($this->createJsVariableDereference($expr->getAttributeName()));
} else {
if ($expr instanceof Expressions\Variable) {
$this->codeEmitter->raw($this->currentContext . $this->createJsVariableDereference($expr->getVariableName()));
} else {
if ($expr instanceof Expressions\Scalar) {
$this->codeEmitter->raw($this->escapeScalar($expr->getValue()));
} else {
throw new \LogicException("Unknown expression class " . get_class($expr));
}
}
}
}
}
}
}
protected function expression(Expression $expr)
{
if ($expr instanceof Expressions\Binary) {
fwrite($this->output, "(");
$this->expression($expr->getLeft());
fwrite($this->output, " " . $expr->getOperation() . " ");
$this->expression($expr->getRight());
fwrite($this->output, ")");
} else {
if ($expr instanceof Expressions\Unary) {
$showParens = !$this->canParensBeOmittedFor($expr->getExpression());
fwrite($this->output, $expr->getOperation());
if ($showParens) {
fwrite($this->output, "(");
}
$this->expression($expr->getExpression());
if ($showParens) {
fwrite($this->output, ")");
}
} else {
if ($expr instanceof Expressions\MethodCall) {
fwrite($this->output, $expr->getMethodName() . "(");
$arguments = $expr->getArguments();
for ($i = 0; $i < count($arguments); $i++) {
$this->expression($arguments[$i]);
if ($i < count($arguments) - 1) {
fwrite($this->output, ", ");
}
}
fwrite($this->output, ")");
} else {
if ($expr instanceof Expressions\GetAttribute) {
$this->expression($expr->getExpression());
fwrite($this->output, '[' . $this->escapeScalar($expr->getAttributeName()) . ']');
} else {
if ($expr instanceof Expressions\Variable) {
fwrite($this->output, '$' . $this->currentContext . '[' . $this->escapeScalar($expr->getVariableName()) . ']');
} else {
if ($expr instanceof Expressions\Scalar) {
fwrite($this->output, $this->escapeScalar($expr->getValue()));
} else {
throw new \LogicException("Unknown expression class " . get_class($expr));
}
}
}
}
}
}
}
protected function expression(Expression $expr)
{
if ($expr instanceof Expressions\Variable) {
if ($expr->getVariableName() === '_parent') {
$contextCounter = max(0, $this->contextCounter - 1);
$context = $contextCounter > 0 ? 'context' . $contextCounter : 'context';
$this->codeEmitter->raw($context);
} else {
if ($expr->getVariableName() === '_top') {
$this->codeEmitter->raw('context');
} else {
if ($expr->getVariableName() === '_') {
$this->codeEmitter->raw($this->currentContext);
} else {
parent::expression($expr);
}
}
}
} else {
if ($expr instanceof Expressions\GetAttribute && $expr->getAttributeName() === '_parent') {
$depth = $this->resolveParentVariable($expr);
$contextCounter = max(0, $this->contextCounter - $depth);
$context = $contextCounter > 0 ? 'context' . $contextCounter : 'context';
$this->codeEmitter->raw($context);
} else {
if ($expr instanceof Expressions\MethodCall && $expr->getMethodName() === 'if') {
$this->codeEmitter->raw('(');
$this->expression($expr->getArguments()[0]);
$this->codeEmitter->raw(' ? ');
$this->expression($expr->getArguments()[1]);
$this->codeEmitter->raw(' : ');
if (count($expr->getArguments()) === 3) {
$this->expression($expr->getArguments()[2]);
} else {
$this->codeEmitter->raw('\\"\\"');
}
$this->codeEmitter->raw(')');
} else {
parent::expression($expr);
}
}
}
}
public function toString()
{
return $this->left->toString() . " " . $this->operation . " " . $this->right->toString();
}
protected function expression(Expression $expr, $omitParens = false)
{
// TODO: implemente a more intelligent algorithm to decide whether or not to render parentheses
if ($expr instanceof Expressions\Binary) {
if (!$omitParens) {
fwrite($this->output, "(");
}
$this->expression($expr->getLeft());
fwrite($this->output, " " . $expr->getOperation() . " ");
$this->expression($expr->getRight());
if (!$omitParens) {
fwrite($this->output, ")");
}
} else {
if ($expr instanceof Expressions\Unary) {
$omitParens |= $this->canParensBeOmittedFor($expr->getExpression());
fwrite($this->output, $expr->getOperation());
if (!$omitParens) {
fwrite($this->output, "(");
}
$this->expression($expr->getExpression());
if (!$omitParens) {
fwrite($this->output, ")");
}
} else {
if ($expr instanceof Expressions\MethodCall) {
fwrite($this->output, $expr->getMethodName() . "(");
$arguments = $expr->getArguments();
for ($i = 0; $i < count($arguments); $i++) {
$this->expression($arguments[$i]);
if ($i < count($arguments) - 1) {
fwrite($this->output, ", ");
}
}
fwrite($this->output, ")");
} else {
if ($expr instanceof Expressions\GetAttribute) {
$this->expression($expr->getExpression());
fwrite($this->output, '.' . $expr->getAttributeName());
} else {
if ($expr instanceof Expressions\Variable) {
fwrite($this->output, $expr->getVariableName());
} else {
if ($expr instanceof Expressions\Scalar) {
fwrite($this->output, $this->escapeScalar($expr->getValue()));
} else {
throw new \LogicException("Unknown expression class " . get_class($expr));
}
}
}
}
}
}
}
protected function expression(Expression $expr)
{
if ($expr instanceof Expressions\Variable) {
if ($expr->getVariableName() === '_parent') {
$contextCounter = max(0, $this->contextCounter - 1);
$context = $contextCounter > 0 ? 'context' . $contextCounter : 'context';
fwrite($this->output, '$' . $context);
return;
} else {
if ($expr->getVariableName() === '_top') {
fwrite($this->output, '$context');
return;
} else {
if ($expr->getVariableName() === '_') {
fwrite($this->output, '$' . $this->currentContext);
return;
} else {
// convert variable dereferences into fetchProperty() calls
$expr = new Expressions\MethodCall('\\Plitz\\Bindings\\Blitz\\TemplateFunctions::fetchProperty', [new Expressions\Variable('_'), new Expressions\Scalar($expr->getVariableName())]);
}
}
}
} else {
if ($expr instanceof Expressions\GetAttribute) {
if ($expr->getAttributeName() === '_parent') {
$depth = $this->resolveParentVariable($expr);
$contextCounter = max(0, $this->contextCounter - $depth);
$context = $contextCounter > 0 ? 'context' . $contextCounter : 'context';
fwrite($this->output, '$' . $context);
return;
} else {
$expr = $this->convertGetAttributeToFetchPropertyCall($expr);
}
} else {
if ($expr instanceof Expressions\MethodCall) {
// TODO: resolve method calls
if ($expr->getMethodName() === 'if') {
fwrite($this->output, '(');
$this->expression($expr->getArguments()[0]);
fwrite($this->output, ' ? ');
$this->expression($expr->getArguments()[1]);
fwrite($this->output, ' : ');
if (count($expr->getArguments()) === 3) {
$this->expression($expr->getArguments()[2]);
} else {
fwrite($this->output, 'null');
}
fwrite($this->output, ')');
return;
} else {
if ($expr->getMethodName() === 'escape') {
$expr = new Expressions\MethodCall('htmlentities', [$expr->getArguments()[0], new Expressions\Scalar(ENT_QUOTES), new Expressions\Scalar(ini_get('default_charset'))]);
} else {
// TODO: support configurable method lookup order
// resolve method call
if (method_exists($this->blitz, $expr->getMethodName())) {
// this is a Blitz call, use $blitz variable
fwrite($this->output, '$blitz->');
} else {
if (function_exists($expr->getMethodName())) {
// this is a regular PHP call, do nothing
} else {
throw new \RuntimeException("Function {$expr->getMethodName()} could not be resolved");
}
}
}
}
}
}
}
parent::expression($expr);
}