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-rw-r--r--src/core/parser/ParserScope.cpp157
-rw-r--r--src/core/parser/ParserScope.hpp115
2 files changed, 265 insertions, 7 deletions
diff --git a/src/core/parser/ParserScope.cpp b/src/core/parser/ParserScope.cpp
index b76bb28..c7a9f2a 100644
--- a/src/core/parser/ParserScope.cpp
+++ b/src/core/parser/ParserScope.cpp
@@ -18,6 +18,7 @@
#include <core/common/Exceptions.hpp>
#include <core/common/Utils.hpp>
+#include <core/model/Typesystem.hpp>
#include "ParserScope.hpp"
@@ -100,6 +101,16 @@ bool DeferredResolution::resolve(
return false;
}
+void DeferredResolution::fail(Logger &logger)
+{
+ try {
+ resultCallback(nullptr, owner, logger);
+ }
+ catch (LoggableException ex) {
+ logger.log(ex);
+ }
+}
+
/* Class ParserScope */
ParserScope::ParserScope(const NodeVector<Node> &nodes,
@@ -267,6 +278,149 @@ bool ParserScope::resolve(const Rtti &type,
return false;
}
+bool ParserScope::resolveType(const std::vector<std::string> &path,
+ Handle<Node> owner, Logger &logger,
+ ResolutionResultCallback resultCallback)
+{
+ // Check whether the given path denotes an array, if yes recursively resolve
+ // the inner type and wrap it in an array type (this allows multi
+ // dimensional arrays).
+ if (!path.empty()) {
+ const std::string &last = path.back();
+ if (last.size() >= 2 && last.substr(last.size() - 2, 2) == "[]") {
+ // Type ends with "[]", remove this from the last element in the
+ // list
+ std::vector<std::string> p = path;
+ p.back() = p.back().substr(0, last.size() - 2);
+
+ // Resolve the rest of the type
+ return resolveType(p, owner, logger,
+ [resultCallback](Handle<Node> resolved,
+ Handle<Node> owner,
+ Logger &logger) {
+ if (resolved != nullptr) {
+ Rooted<ArrayType> arr{new ArrayType{resolved.cast<Type>()}};
+ resultCallback(arr, owner, logger);
+ } else {
+ resultCallback(nullptr, owner, logger);
+ }
+ });
+ }
+ }
+
+ // Requested type is not an array, call the usual resolve function
+ return resolve(RttiTypes::Type, path, owner, logger, resultCallback);
+}
+
+bool ParserScope::resolveType(const std::string &name, Handle<Node> owner,
+ Logger &logger,
+ ResolutionResultCallback resultCallback)
+{
+ return resolveType(Utils::split(name, '.'), owner, logger, resultCallback);
+}
+
+bool ParserScope::resolveTypeWithValue(const std::vector<std::string> &path,
+ Handle<Node> owner, Variant &value,
+ Logger &logger,
+ ResolutionResultCallback resultCallback)
+{
+ // Fork the parser scope -- constants need to be resolved in the same
+ // context as this resolve call
+ std::shared_ptr<ParserScope> scope = std::make_shared<ParserScope>(fork());
+
+ return resolveType(
+ path, owner, logger,
+ [=](Handle<Node> resolved, Handle<Node> owner, Logger &logger) mutable {
+ // Abort if the lookup failed
+ if (resolved == nullptr) {
+ resultCallback(resolved, owner, logger);
+ return;
+ }
+
+ // Fetch the type reference and the manager reference
+ Rooted<Type> type = resolved.cast<Type>();
+ Manager *mgr = &type->getManager();
+
+ // The type has been resolved, try to resolve magic values as
+ // constants and postpone calling the callback function until
+ // all magic values have been resolved
+ std::shared_ptr<bool> isAsync = std::make_shared<bool>(false);
+ std::shared_ptr<int> magicCount = std::make_shared<int>(0);
+ type->build(value, logger, [=](Variant &magicValue, bool isValid,
+ ManagedUid innerTypeUid) mutable {
+ // Fetch the inner type
+ Rooted<Type> innerType =
+ dynamic_cast<Type *>(mgr->getManaged(innerTypeUid));
+ if (innerType == nullptr) {
+ return;
+ }
+
+ // Fetch a pointer at the variant
+ Variant *magicValuePtr = &magicValue;
+
+ // Increment the number of encountered magic values
+ (*magicCount)++;
+
+ // Try to resolve the value as constant
+ std::string constantName = magicValue.asMagic();
+ scope->resolve<Constant>(constantName, owner, logger,
+ [=](Handle<Node> resolved,
+ Handle<Node> owner,
+ Logger &logger) mutable {
+ if (resolved != nullptr) {
+ // Make sure the constant is of the correct inner type
+ Rooted<Constant> constant = resolved.cast<Constant>();
+ Rooted<Type> constantType = constant->getType();
+ if (constantType != innerType) {
+ logger.error(
+ std::string("Expected value of type \"") +
+ innerType->getName() +
+ std::string("\" but found constant \"") +
+ constant->getName() +
+ std::string(" of type \"") +
+ constantType->getName() + "\" instead.",
+ *owner);
+ } else if (!isValid) {
+ logger.error("Identifier \"" + constantName +
+ "\" is not a valid " +
+ innerType->getName(),
+ *owner);
+ }
+
+ // Nevertheless, no matter what happened, set the value
+ // of the original magic variant to the given constant
+ *magicValuePtr = constant->getValue();
+ }
+
+ // Decrement the number of magic values, call the callback
+ // function if all magic values have been resolved
+ (*magicCount)--;
+ if ((*magicCount) == 0 && (*isAsync)) {
+ resultCallback(resolved, owner, logger);
+ }
+ });
+ });
+
+ // Now we are asynchronous
+ (*isAsync) = true;
+
+ // Directly call the callback function if there were no magic values
+ // involved
+ if ((*magicCount) == 0) {
+ resultCallback(resolved, owner, logger);
+ }
+ });
+}
+
+bool ParserScope::resolveTypeWithValue(const std::string &name,
+ Handle<Node> owner, Variant &value,
+ Logger &logger,
+ ResolutionResultCallback resultCallback)
+{
+ return resolveTypeWithValue(Utils::split(name, '.'), owner, value, logger,
+ resultCallback);
+}
+
bool ParserScope::performDeferredResolution(Logger &logger)
{
// Repeat the resolution process as long as something has changed in the
@@ -305,7 +459,8 @@ bool ParserScope::performDeferredResolution(Logger &logger)
// Output error messages for all elements for which resolution did not
// succeed.
- for (const auto &failed : deferred) {
+ for (auto &failed : deferred) {
+ failed.fail(logger);
logger.error(std::string("Could not resolve ") + failed.type.name +
std::string(" \"") + Utils::join(failed.path, ".") +
std::string("\""),
diff --git a/src/core/parser/ParserScope.hpp b/src/core/parser/ParserScope.hpp
index e01acfe..c49acd3 100644
--- a/src/core/parser/ParserScope.hpp
+++ b/src/core/parser/ParserScope.hpp
@@ -33,8 +33,7 @@
* @file ParserScope.hpp
*
* Contains the ParserScope class used for resolving references based on the
- *current
- * parser state.
+ * current parser state.
*
* @author Andreas Stöckel (astoecke@techfak.uni-bielefeld.de)
*/
@@ -45,12 +44,13 @@ namespace ousia {
class CharReader;
class Logger;
class ParserScope;
+class Variant;
/**
* Callback function type used for creating a dummy object while no correct
* object is available for resolution.
*/
-using ResolutionImposterCallback = Rooted<Node>(*)();
+using ResolutionImposterCallback = std::function<Rooted<Node>()>;
/**
* Callback function type called whenever the result of a resolution is
@@ -60,8 +60,8 @@ using ResolutionImposterCallback = Rooted<Node>(*)();
* @param owner is the node that was passed as "owner".
* @param logger is the logger to which errors should be logged.
*/
-using ResolutionResultCallback = void (*)(Handle<Node> resolved,
- Handle<Node> owner, Logger &logger);
+using ResolutionResultCallback = std::function<void(Handle<Node> resolved,
+ Handle<Node> owner, Logger &logger)>;
/**
* Base class for the
@@ -171,6 +171,15 @@ public:
*/
bool resolve(const std::unordered_multiset<const Node *> &ignore,
Logger &logger);
+
+ /**
+ * Inform the callee about the failure by calling the callback function with
+ * "nullptr" as resolved element.
+ *
+ * @param logger is the logger instance to which error messages should be
+ * logged.
+ */
+ void fail(Logger &logger);
};
/**
@@ -555,12 +564,12 @@ public:
* @tparam T is the type of the node that should be resolved.
* @param name is the path for which a node should be resolved. The name is
* split at '.' to form a path.
+ * @param owner is the node for which the resolution takes place.
* @param logger is the logger instance into which resolution problems
* should be logged.
* @param resultCallback is the callback function to which the result of
* the resolution process is passed. This function is called once the
* resolution was successful.
- * @param owner is the node for which the resolution takes place.
* @return true if the resolution was immediately successful. This does not
* mean, that the resolved object does not exist, as it may be resolved
* later.
@@ -574,6 +583,100 @@ public:
}
/**
+ * Resolves a typesystem type. Makes sure an array type is returned if an
+ * array type is requested.
+ *
+ * @param path is the path for which a node should be resolved.
+ * @param owner is the node for which the resolution takes place.
+ * @param logger is the logger instance into which resolution problems
+ * should be logged.
+ * @param resultCallback is the callback function to which the result of
+ * the resolution process is passed. This function is called once the
+ * resolution was successful.
+ * @return true if the resolution was immediately successful. This does not
+ * mean, that the resolved object does not exist, as it may be resolved
+ * later.
+ */
+ bool resolveType(const std::vector<std::string> &path, Handle<Node> owner,
+ Logger &logger, ResolutionResultCallback resultCallback);
+
+ /**
+ * Resolves a typesystem type. Makes sure an array type is returned if an
+ * array type is requested.
+ *
+ * @tparam T is the type of the node that should be resolved.
+ * @param name is the path for which a node should be resolved. The name is
+ * split at '.' to form a path.
+ * @param owner is the node for which the resolution takes place.
+ * @param logger is the logger instance into which resolution problems
+ * should be logged.
+ * @param resultCallback is the callback function to which the result of
+ * the resolution process is passed. This function is called once the
+ * resolution was successful.
+ * @return true if the resolution was immediately successful. This does not
+ * mean, that the resolved object does not exist, as it may be resolved
+ * later.
+ */
+ bool resolveType(const std::string &name, Handle<Node> owner,
+ Logger &logger, ResolutionResultCallback resultCallback);
+
+ /**
+ * Resolves a type and makes sure the corresponding value is of the correct
+ * type.
+ *
+ * <b>Warning:</b> This function is extremely dangerous as you have to make
+ * sure that the "value" reference stays alife as long as the "owner" is
+ * valid. This is especially problematic as internally references at parts
+ * of "value" may be kept. Test usages of this function well!
+ *
+ * @tparam T is the type of the node that should be resolved.
+ * @param path is the path for which a node should be resolved.
+ * @param owner is the node for which the resolution takes place.
+ * @param value is a reference at the Variant that represents the value for
+ * which the type should be looked up. The value must be valid as long as
+ * the owner node is valid (so it should be a part of the owner).
+ * @param logger is the logger instance into which resolution problems
+ * should be logged.
+ * @param resultCallback is the callback function to which the result of
+ * the resolution process is passed. This function is called once the
+ * resolution was successful.
+ * @return true if the resolution was immediately successful. This does not
+ * mean, that the resolved object does not exist, as it may be resolved
+ * later.
+ */
+ bool resolveTypeWithValue(const std::vector<std::string> &path,
+ Handle<Node> owner, Variant &value,
+ Logger &logger, ResolutionResultCallback resultCallback);
+
+ /**
+ * Resolves a type and makes sure the corresponding value is of the correct
+ * type.
+ *
+ * <b>Warning:</b> This function is extremely dangerous as you have to make
+ * sure that the "value" reference stays alife as long as the "owner" is
+ * valid. This is especially problematic as internally references at parts
+ * of "value" may be kept. Test usages of this function well!
+ *
+ * @tparam T is the type of the node that should be resolved.
+ * @param name is the path for which a node should be resolved. The name is
+ * split at '.' to form a path.
+ * @param owner is the node for which the resolution takes place.
+ * @param value is a reference at the Variant that represents the value for
+ * which the type should be looked up. The value must be valid as long as
+ * the owner node is valid (so it should be a part of the owner).
+ * @param logger is the logger instance into which resolution problems
+ * should be logged.
+ * @param resultCallback is the callback function to which the result of
+ * the resolution process is passed. This function is called once the
+ * resolution was successful.
+ * @return true if the resolution was immediately successful. This does not
+ * mean, that the resolved object does not exist, as it may be resolved
+ * later.
+ */
+ bool resolveTypeWithValue(const std::string &name, Handle<Node> owner,
+ Variant &value, Logger &logger, ResolutionResultCallback resultCallback);
+
+ /**
* Tries to resolve all currently deferred resolution steps. The list of
* pending deferred resolutions is cleared after this function has run.
*
generated by cgit v1.2.3 (git 2.39.1) at 2025-05-01 00:10:48 +0000