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Commit Graph

1 Commits (59c59201eadb4ec60170c1a6c718eb23bf9f3a41)

Author	SHA1	Message	Date
Pratik Bhujel	13889e9a30	fix(compiler): preserve runtime class dispatch and introspection for polymorphic objects (#110) ... * fix(compiler): preserve runtime class dispatch and introspection for polymorphic objects When an object variable has an upper-bound declared type (e.g. assigned from a function or method return), SSA marks it as a stable object. However, stableObjects does not guarantee the concrete runtime class: the instance may be a subclass at runtime, or null if nullable. 1. FuncCallOptimizer::genGetClassOptimized checked isStableObject($obj->name) and folded get_class($obj) to the declared type literal string. For $a = getAnimal() returning a Dog, get_class($a) was incorrectly folded to "Animal" at compile time. 2. MethodCallTrait::parseStaticCall checked isStableObject($class) and jumped to _do_call with the declared base class. For $a::who(), this statically invoked Base::who() instead of dispatching to Dog::who() on the runtime object. Require proven exact object instances (exactObjects, populated from direct new ConcreteClass() definitions) before folding get_class() or devirtualizing static calls on object variables. Non-exact variables fall back to runtime class resolution (php::fn::get_class() and php::callStaticMethod()), matching PHP semantics. Add unit test coverage verifying exact objects continue to fold/devirtualize while polymorphic variables retain dynamic runtime dispatch. * fix(compiler): preserve lexical scope in dynamic static calls and runtime type checks for get_class - Use php::callScoped with getCallableScopeExpr() for dynamic static calls inside class methods to preserve caller visibility on protected methods - Fall back to runtime php::call for get_class on non-exact values so nullable objects throw TypeError instead of dereferencing null - Add behavioral PHPT tests for protected polymorphic static calls and nullable get_class - Update unit tests for scoped dispatch and runtime introspection * test(compiler): remove stray top-level main call from PHPT tests In TypePHP AOT compilation, function main(): void serves as the binary entrypoint. Top-level function calls outside a function are rejected by the preprocessor as stray code.	4 weeks ago