- Extract method call handling from CompilerBase to MethodCallTrait - Add MethodCallTrait import and usage in CompilerBase - Remove redundant method call parsing functions from CompilerBase - Move all method-related helper functions to the new trait - Maintain same functionality while improving code organization - Separate concerns by isolating method call parsing logicpull/17/head
parent
ab5dfaa722
commit
cc0edf4f74
2 changed files with 557 additions and 533 deletions
@ -0,0 +1,555 @@ |
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<?php |
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/** |
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* This file is part of TypePHP. |
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* |
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* Resolves object and static method calls, including native and magic fallbacks. |
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*/ |
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|
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namespace TypePhp\Parser; |
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|
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use PhpParser\Modifiers; |
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use PhpParser\Node; |
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use PhpParser\Node\Expr; |
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use PhpParser\Node\Expr\CallLike; |
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use TypePhp\Exception\DynamicCall; |
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use TypePhp\Exception\PlaceHolder; |
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use TypePhp\Symbol; |
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|
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trait MethodCallTrait |
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{ |
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protected function isOverrideMethod(string $fullMethodName): bool |
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{ |
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$fullMethodNameLower = strtolower($fullMethodName); |
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return isset($this->classMethodOverride[$fullMethodNameLower]) and $this->classMethodOverride[$fullMethodNameLower]; |
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} |
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|
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protected function getOverrideMethodName(string $class, string $method): string |
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{ |
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if (!$this->hasClass($class) && !$this->hasInterface($class) |
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&& !$this->isInternalClass($class) && !$this->isInternalInterface($class)) { |
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$class = $this->getNamespacedClassName($class); |
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} |
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return $class . '::' . $method; |
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} |
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|
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protected function hasSubClasses(string $classNameLower): bool |
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{ |
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return !empty($this->classSubClasses[$classNameLower]); |
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} |
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|
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protected function isCurrentClassFinal(): bool |
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{ |
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return $this->classDef && ($this->classDef->flags & Modifiers::FINAL) !== 0; |
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} |
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|
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protected function isFinalClass(string $class): bool |
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{ |
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return $this->hasClass($class) && ($this->getClass($class)->flags & Modifiers::FINAL) !== 0; |
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} |
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|
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protected function getMethodFlags(string $class, string $method): int |
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{ |
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if (!$this->hasClass($class)) { |
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return 0; |
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} |
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$classDef = $this->getClass($class); |
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while (true) { |
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$flags = $classDef->getMethodFlags($method); |
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if ($flags !== 0) { |
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return $flags; |
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} |
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if (!$classDef->extends || !$this->hasClass($classDef->extends)) { |
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return 0; |
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} |
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$classDef = $this->getClass($classDef->extends); |
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} |
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} |
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|
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protected function guardAbstractMethod(string $class, string $method, Node $expr): void |
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{ |
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$flags = $this->getMethodFlags($class, $method); |
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if ($flags & Modifiers::ABSTRACT) { |
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$this->fatalError($expr, "Cannot call abstract method `{$class}::{$method}()`"); |
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} |
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} |
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|
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/** |
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* Determine whether a method call can be devirtualized to a direct native call. |
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* |
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* Returns true when the exact class is known at compile time: |
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* 1. $this->m() in a final class (no subclass possible) |
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* 2. $this->m() where m is final (can't be overridden) |
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* 3. $this->m() where m is private (not virtual) |
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* 4. $obj->m() where obj's class has no known subclasses |
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* 5. $obj->m() where obj is SSA-stable and its class is final |
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*/ |
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protected function canDevirtualize(string $object, string $class, string $method): bool |
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{ |
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// Case 1: Calling on 'this_' in a final class |
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if ($object === 'this_' && $this->isCurrentClassFinal()) { |
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return true; |
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} |
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|
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// Case 2 & 3: Method is final or private |
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$flags = $this->getMethodFlags($class, $method); |
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if ($flags & (Modifiers::FINAL | Modifiers::PRIVATE)) { |
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return true; |
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} |
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|
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// Case 4: Typed object whose class has no known subclasses |
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if ($object !== 'this_' && $this->hasClass($class)) { |
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$classLower = strtolower($class); |
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if (!$this->hasSubClasses($classLower) && !$this->isInterface($class) && !$this->isAbstractClass($class)) { |
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return true; |
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} |
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} |
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|
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// Case 5: SSA stability proves the variable identity, not necessarily |
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// the runtime class. Only final classes are exact enough here. |
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if ($object !== 'this_' && isset($this->context->stableObjects[$object])) { |
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$stableClass = $this->context->stableObjects[$object]; |
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if ($this->isFinalClass($stableClass)) { |
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return true; |
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} |
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} |
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return false; |
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} |
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|
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protected function findNativeMethod(CallLike $expr, string $object, string $method): string|false |
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{ |
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$classDef = null; |
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if ($object === 'this_') { |
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$class = $this->getFullClassName(); |
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$classDef = $this->classDef; |
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} elseif (isset($this->context->objects[$object])) { |
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$class = $this->context->objects[$object]; |
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// SSA-stable: use exact type from stableObjects (more specific than declared type) |
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if (isset($this->context->stableObjects[$object])) { |
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$class = $this->context->stableObjects[$object]; |
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} |
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} else { |
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return false; |
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} |
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|
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$nativeFunc = $this->getNativeMethod($expr, $class, $method); |
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// 存在 Native 类，但是没有找到方法，可能是动态调用 |
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if (!$nativeFunc) { |
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if ($this->hasClass($class) and $this->getNativeMethod($expr, $class, '__call', false)) { |
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throw new DynamicCall(); |
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} |
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} |
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|
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$fullMethodName = $this->getOverrideMethodName($class, $method); |
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|
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// 存在子类同名方法，尝试去虚化 |
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if ($this->isOverrideMethod($fullMethodName)) { |
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if (!$this->canDevirtualize($object, $class, $method)) { |
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return false; |
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} |
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} |
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if ($nativeFunc) { |
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if ($this->hasClass($class) && $this->getMethodFlags($class, $method) & Modifiers::ABSTRACT) { |
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return false; |
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} |
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if ($object !== 'this_' && !isset($this->context->stableObjects[$object]) |
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&& ($this->isAbstractClass($class) || $this->isInterface($class))) { |
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return false; |
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} |
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$this->checkFunction($nativeFunc); |
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if ($this->hasFunction($nativeFunc)) { |
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return $nativeFunc; |
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} |
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} |
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return false; |
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} |
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protected function parseNativeMethodCall(string $object, string $nativeFunc, array $args): string |
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{ |
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if ($this->getVarType($object) != self::TYPE_OBJECT) { |
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$tmpVar = $this->genTmpVarName(); |
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$this->context->beforeStmtLines[] = self::TYPE_OBJECT . ' ' . $tmpVar . ' = ' . $object . ';'; |
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$object = $tmpVar; |
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} |
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if (count($args) === 0) { |
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return self::PREFIX . $nativeFunc . '(' . $object . ')'; |
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} |
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return self::PREFIX . $nativeFunc . '(' . $object . ', ' . $this->parseNativeCallArgs($args, $nativeFunc) . ')'; |
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} |
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protected function parseStdCall(Expr\StaticCall $expr): string |
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{ |
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$func = strtolower($this->parseIdentifier($expr->name)); |
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$type = match ($func) { |
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'int' => self::TYPE_INT, |
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'float' => self::TYPE_FLOAT, |
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'bool' => self::TYPE_BOOL, |
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'bigint' => self::TYPE_BIGINT, |
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'decimal' => self::TYPE_DECIMAL, |
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'bigfloat' => self::TYPE_BIGFLOAT, |
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default => '', |
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}; |
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if ($type) { |
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$expr->setAttribute('nativeType', $type); |
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$valueExpr = $this->parseExpr($expr->args[0]->value); |
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if (in_array($type, [self::TYPE_INT, self::TYPE_FLOAT, self::TYPE_BOOL])) { |
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return $this->convertExprFromType($type, $valueExpr); |
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} |
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$argType = $this->detectTypeOfExpr($expr->args[0]->value); |
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if ($argType === $type) { |
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return $valueExpr; |
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} |
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if ($type === self::TYPE_BIGINT) { |
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if ($argType === self::TYPE_FLOAT) { |
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$this->fatalError($expr, 'Cannot construct BigInt from float, use string or int instead'); |
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} |
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if ($argType === self::TYPE_INT) { |
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return 'php::toBigInt(' . $valueExpr . ')'; |
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} |
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return 'php::BigInt::newInstance(' . $valueExpr . ')'; |
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} |
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if ($type === self::TYPE_DECIMAL) { |
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if ($argType === self::TYPE_FLOAT) { |
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$argNode = $expr->args[0]->value; |
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if ($argNode instanceof Node\Scalar\Float_) { |
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$rawValue = $argNode->getAttribute('rawValue'); |
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$clean = $rawValue !== null ? $this->stripNumericUnderscores($rawValue) : (string)$argNode->value; |
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return 'php::toDecimal(' . $this->getLiteralString($clean) . ')'; |
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} |
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$this->fatalError($expr, 'Cannot construct Decimal from float variable, use string or int instead'); |
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} |
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if ($argType === self::TYPE_INT) { |
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return 'php::toDecimal(' . $valueExpr . ')'; |
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} |
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return 'php::Decimal::newInstance(' . $valueExpr . ')'; |
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} |
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if ($type === self::TYPE_BIGFLOAT) { |
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if ($argType === self::TYPE_INT) { |
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return 'php::toBigFloat(' . $valueExpr . ')'; |
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} |
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if ($argType === self::TYPE_FLOAT) { |
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return 'php::toBigFloat(' . $valueExpr . ')'; |
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} |
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return 'php::BigFloat::newInstance(' . $valueExpr . ')'; |
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} |
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return $valueExpr; |
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} else { |
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$this->fatalError($expr, 'Unknown std method: ' . $func); |
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} |
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} |
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|
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protected function parseParentMethodCall(Expr\StaticCall $expr): string |
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{ |
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if (!$this->classDef->extends) { |
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$this->fatalError($expr, 'Cannot call parent method because class `' . $this->classDef->name . '` does not extend any class'); |
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} |
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$parentClass = $this->classDef->extends; |
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if ($this->isIdExpr($expr->name)) { |
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$method = $this->parseIdentifier($expr->name); |
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$this->guardAbstractMethod($parentClass, $method, $expr); |
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$methodPtr = $this->getMethodPtr($parentClass, $method); |
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} else { |
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// parent:: is bound to the lexical parent class, not the runtime |
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// object's parent. Look the method up on that class, then invoke it |
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// through this_ so Zend receives the current call scope. |
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$methodPtr = 'php::getMethod(' . $this->getClassEntryPtr($parentClass) . ', ' |
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. $this->identifierToStr($expr->name) . ')'; |
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} |
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if (empty($expr->args)) { |
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return 'this_.call(' . $methodPtr . ')'; |
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} |
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return 'this_.call(' . $methodPtr . ', ' . $this->parseCallArgs($expr->args) . ')'; |
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} |
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|
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|
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protected function genToObjectCall(Expr\MethodCall $expr, string $receiver): string |
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{ |
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if (empty($expr->args)) { |
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return 'php::toObject(' . $receiver . ')'; |
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} |
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$className = $this->resolveClassNameArg($expr->args[0]->value); |
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return 'php::toObject(' . $receiver . ', ' . $this->getClassEntryPtr($className) . ')'; |
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} |
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|
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protected function genToRefCall(Expr\MethodCall $expr): string |
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{ |
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if (!empty($expr->args)) { |
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$this->fatalError($expr, 'The toRef method does not accept parameters'); |
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} |
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return $this->parseChainedExpr($expr->var, self::OP_REFVAL); |
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} |
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|
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protected function parseMethodCall(Expr\MethodCall $expr): string |
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{ |
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if ($this->containsNullsafeChain($expr->var)) { |
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return $this->parseNullsafeExpr($expr); |
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} |
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|
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$class = ''; |
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$object = $this->parseIdentifier($expr->var); |
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if ($this->isVarExpr($expr->var)) { |
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if (!$this->hasVar($object)) { |
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$this->errorUndefinedVariable($expr->var); |
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} |
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if ($this->isTypedObject($object)) { |
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$class = $this->getObjectType($object); |
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} elseif ($object === 'this_') { |
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// $this 在构造函数/方法中静态类型为当前类，便于解析抽象方法等按引用参数签名 |
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$class = $this->classDef !== null ? $this->classDef->getNamespacedName(false) : $this->class; |
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} else { |
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// 接口和抽象类类型的变量没有具体对象类型，仍可从声明签名解析按引用参数。 |
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$class = $this->getDeclaredObjectType($object); |
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} |
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} |
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|
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$magicMethod = false; |
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$method = $this->identifierToStr($expr->name, literal: true); |
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|
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// keyword methods (to* builtins + __ extensions) — dispatched before type-specific logic |
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if ($this->isNamedMethod($expr->name)) { |
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$methodName = $expr->name->toString(); |
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$receiverType = $this->isVarExpr($expr->var) ? $this->getVarType($object) : $this->detectTypeOfExpr($expr->var); |
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if ($receiverType === self::TYPE_VOID) { |
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$receiverType = self::TYPE_VAR; |
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} |
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// to* builtins |
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if (isset(self::KEYWORD_METHOD_MAP[$methodName])) { |
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if ($methodName === 'toObject') { |
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return $this->genToObjectCall($expr, $object); |
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} |
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if ($methodName === 'toRef') { |
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return $this->genToRefCall($expr); |
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} |
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if ($methodName === 'toAny' && !empty($expr->args)) { |
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$this->fatalError($expr, 'The toAny method does not accept parameters'); |
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} |
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return $this->genToConvertCall($object, $methodName, $receiverType); |
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} |
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// __ keyword extensions |
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$kwExt = $this->findKeywordExtensionMethod($methodName); |
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if ($kwExt) { |
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return $this->parseUniversalMethodCall($expr, $object, $methodName, $kwExt, $this->isVarExpr($expr->var)); |
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} |
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} |
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|
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// 可转为原生调用的 MethodCall |
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if ($this->isVarExpr($expr->var) and $this->isNamedMethod($expr->name)) { |
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$type = $this->getVarType($object); |
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// 引用参数允许方法调用：有class信息走原生调用，无class信息走动态调用 |
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if (!$this->checkArgType($type, self::TYPE_OBJECT) and $type !== self::TYPE_REF) { |
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$methodName = $expr->name->toString(); |
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// 非对象类型可使用内置方法 |
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$fn = $this->findUniversalMethodAnyType($type, $methodName); |
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if ($fn) { |
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if ($type === self::TYPE_STREAM) { |
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return $this->genStreamNullGuard($expr, $object, $methodName, $fn); |
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} |
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return $this->parseUniversalMethodCall($expr, $object, $methodName, $fn); |
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} |
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$this->fatalError($expr, "Cannot call method `{$methodName}()` on variable of type {$type}"); |
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} |
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$this->context->beforeStmtLines[] = $this->formatCppLineComment( |
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'Method Call: ', |
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$object . '->' . $this->parseIdentifier($expr->name) . '()' |
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); |
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try { |
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$nativeFunc = $this->findNativeMethod($expr, $object, $this->parseIdentifier($expr->name)); |
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if ($nativeFunc) { |
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$expr->setAttribute('nativeCall', $nativeFunc); |
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try { |
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if ($this->shouldUseDynamicCallForNativeArgs($nativeFunc, $expr->args)) { |
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return $this->genRuntimeObjectMethodCall($object, $this->getMethodPtr($class, $methodName), $expr->args, $methodName, $class); |
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} |
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return $this->parseNativeMethodCall($object, $nativeFunc, $expr->args); |
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} catch (PlaceHolder) { |
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return $this->genPlaceHolder($this->genArray([$object, $method])); |
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} |
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} |
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} catch (DynamicCall) { |
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$extension = $this->findObjectExtensionMethod($class, $methodName); |
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if ($extension !== null) { |
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return $this->parseUniversalMethodCall($expr, $object, $methodName, $extension); |
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} |
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$magicMethod = true; |
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} |
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if (!$nativeFunc) { |
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$extension = $this->findObjectExtensionMethod($class, $methodName); |
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if ($extension !== null) { |
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return $this->parseUniversalMethodCall($expr, $object, $methodName, $extension); |
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} |
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} |
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} |
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|
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// 表达式返回值也可使用内置方法：fn()->method(), $obj->fn()->method(), Foo::fn()->method(), $obj->prop->method() |
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if (!$this->isVarExpr($expr->var) and $this->isNamedMethod($expr->name)) { |
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$type = $this->detectTypeOfExpr($expr->var); |
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if ($type === self::TYPE_VOID) { |
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$type = self::TYPE_VAR; |
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} |
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if ($type !== self::TYPE_VAR && !$this->checkArgType($type, self::TYPE_OBJECT)) { |
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$methodName = $expr->name->toString(); |
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$fn = $this->findUniversalMethodAnyType($type, $methodName); |
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if ($fn) { |
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// Wrap receiver in type conversion for direct_method handlers |
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// since the raw expression (often from php::call()) is php::Variant |
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$receiver = $object; |
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if ($fn['handler'] === 'direct_method') { |
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$receiver = $this->wrapUniversalReceiver($type, $object); |
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} |
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if ($type === self::TYPE_STREAM) { |
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return $this->genStreamNullGuard($expr, $receiver, $methodName, $fn); |
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} |
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return $this->parseUniversalMethodCall($expr, $receiver, $methodName, $fn, false); |
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} |
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} |
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|
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$extensionClass = $this->detectClassOfExpr($expr->var); |
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$extension = $this->findObjectExtensionMethod($extensionClass, $methodName); |
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if ($extension !== null) { |
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return $this->parseUniversalMethodCall($expr, $object, $methodName, $extension, false); |
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} |
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} |
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|
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if ($this->isNamedMethod($expr->name)) { |
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$funcName = $this->parseIdentifier($expr->name); |
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} else { |
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$funcName = ''; |
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} |
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|
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if ($class && $funcName && !$magicMethod && $this->isInternalClass($class)) { |
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$methodPtr = $this->getMethodPtr($class, $funcName); |
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} else { |
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$methodPtr = $method; |
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} |
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|
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if ($object === 'this_' or $object === 'self' or $object === 'static') { |
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$this->methodDef->hasDynamicCall = true; |
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} |
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|
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if (empty($expr->args)) { |
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return $object . '.call(' . $methodPtr . ')'; |
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} |
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try { |
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$class = empty($class) ? self::DYNAMIC_CALLED_CLASS : $class; |
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return $this->genRuntimeObjectMethodCall($object, $methodPtr, $expr->args, $funcName, $class); |
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} catch (PlaceHolder) { |
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return $this->genPlaceHolder($this->genArray([$object, $method])); |
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} |
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} |
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|
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|
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protected function parseStaticCall(Expr\StaticCall $expr): string |
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{ |
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$self = false; |
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$callScope = []; |
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$class = $this->parseIdentifier($expr->class); |
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|
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// parent::$method() still has a lexical parent class even when the |
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// method name itself is dynamic. Handle it before the generic dynamic |
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// static-call branch below. |
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if ($this->isNameExpr($expr->class) && $class === 'parent') { |
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return $this->parseParentMethodCall($expr); |
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} |
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|
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if ($this->isVarExpr($expr->class) or $this->isVarExpr($expr->name)) { |
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$var = $class; |
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if ($this->isTypedObject($var)) { |
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$class = $this->getObjectType($var); |
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goto _do_call; |
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} |
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if ($this->getVarType($var) == self::TYPE_OBJECT) { |
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$fn = 'php::concat({' . $var . '.getClassName(), "::", ' . $this->identifierToStr($expr->name) . '})'; |
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} else { |
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$fn = 'php::concat({' . $this->identifierToStr($expr->class) . ', "::", ' . $this->identifierToStr($expr->name) . '})'; |
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} |
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$placeHolder = $fn; |
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} elseif ($this->isNameExpr($expr->class) and $class === 'static') { |
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$methodPtr = $this->identifierToStr($expr->name, literal: true); |
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$fn = Symbol::getCalledCe() . ', php::getMethod(' . Symbol::getCalledCe() . ', ' . $methodPtr . ')'; |
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$this->context->beforeStmtLines[] = $this->formatCppLineComment( |
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'Static Method Call: ', |
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'static::' . $this->parseIdentifier($expr->name) . '()' |
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); |
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$placeHolder = $this->genArray([Symbol::getCalledClass(), $methodPtr]); |
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} elseif ($this->isNameExpr($expr->class)) { |
||||
if ($class === 'self') { |
||||
$class = $this->class; |
||||
$self = true; |
||||
} elseif ($class === 'std') { |
||||
return $this->parseStdCall($expr); |
||||
} |
||||
$class = $this->getNamespacedClassName($class); |
||||
|
||||
_do_call: |
||||
$method = $this->parseIdentifier($expr->name); |
||||
$dynamicCall = false; |
||||
$this->context->beforeStmtLines[] = $this->formatCppLineComment( |
||||
'Static Method Call: ', |
||||
$class . '::' . $method . '()' |
||||
); |
||||
|
||||
if ($this->isNameExpr($expr->class) and $this->isIdExpr($expr->name)) { |
||||
$callScope = [$this->genCharPtr($class, true), $this->genCharPtr($method)]; |
||||
} |
||||
|
||||
if ($callScope) { |
||||
$nativeFunc = $this->getNativeMethod($expr, $class, $method); |
||||
// 存在 Native 类，但是没有找到方法，可能是动态调用 |
||||
if (!$nativeFunc and $this->hasClass($class) and $this->getNativeMethod($expr, $class, '__callStatic', false)) { |
||||
$dynamicCall = true; |
||||
} |
||||
|
||||
if ($nativeFunc) { |
||||
try { |
||||
if ($this->shouldUseDynamicCallForNativeArgs($nativeFunc, $expr->args)) { |
||||
return $this->genRuntimeFunctionCall( |
||||
$this->getClassEntryPtr($class) . ', ' . $this->getFuncPtr($class . '::' . $method), |
||||
$expr->args, |
||||
$method, |
||||
$class |
||||
); |
||||
} |
||||
$args = $this->parseNativeCallArgs($expr->args, $nativeFunc); |
||||
$expr->setAttribute('nativeCall', $nativeFunc); |
||||
} catch (PlaceHolder) { |
||||
return $this->genPlaceHolder($this->genArray($callScope)); |
||||
} |
||||
// 在方法定义中使用了当前类的方法 self::method()，依然应该传递 this_ 指针 |
||||
if ($this->methodDef and $self) { |
||||
$object = 'this_'; |
||||
} else { |
||||
$object = $this->getCeWrapper($class); |
||||
} |
||||
if ($args) { |
||||
return self::PREFIX . $nativeFunc . '(' . $object . ', ' . $args . ')'; |
||||
} else { |
||||
return self::PREFIX . $nativeFunc . '(' . $object . ')'; |
||||
} |
||||
} |
||||
} |
||||
|
||||
if ($dynamicCall) { |
||||
$fn = $this->getLiteralString($class . '::' . $method); |
||||
} else { |
||||
$ce = $this->getClassEntryPtr($class); |
||||
$fn = $ce . ', ' . $this->getFuncPtr($class . '::' . $method); |
||||
} |
||||
$placeHolder = $this->genArray($callScope); |
||||
} else { |
||||
$fn = 'php::concat({' . $this->identifierToStr($expr->class) . ', "::", ' . $this->identifierToStr($expr->name) . '})'; |
||||
$placeHolder = $fn; |
||||
} |
||||
|
||||
$call = 'php::call'; |
||||
if (empty($expr->args)) { |
||||
return $call . '(' . $fn . ')'; |
||||
} |
||||
try { |
||||
return $this->genRuntimeFunctionCall($fn, $expr->args); |
||||
} catch (PlaceHolder) { |
||||
return $this->genPlaceHolder($placeHolder); |
||||
} |
||||
} |
||||
|
||||
} |
||||
Loading…
Reference in new issue