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56 lines
2.1 KiB
C++
56 lines
2.1 KiB
C++
/**
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* Copyright 2019-present, GraphQL Foundation
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#include "c/GraphQLAstVisitor.h"
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#include "AstVisitor.h"
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using namespace facebook::graphql::ast; // NOLINT
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#include "c/GraphQLAstForEachConcreteType.h"
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#define DECLARE_VISIT(type, snake_type) \
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bool visit##type(const type &node) override; \
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void endVisit##type(const type &node) override;
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class CVisitorBridge : public visitor::AstVisitor {
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const struct GraphQLAstVisitorCallbacks *callbacks_;
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void *userData_;
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public:
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explicit CVisitorBridge(const struct GraphQLAstVisitorCallbacks *callbacks,
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void *userData)
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: callbacks_(callbacks), userData_(userData) {}
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FOR_EACH_CONCRETE_TYPE(DECLARE_VISIT)
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};
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#define IMPLEMENT_VISIT(type, snake_type) \
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bool CVisitorBridge::visit##type(const type &node) { \
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if (callbacks_->visit_##snake_type) { \
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return callbacks_->visit_##snake_type( \
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(const struct GraphQLAst##type *)&node, userData_); \
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} \
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return true; \
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} \
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void CVisitorBridge::endVisit##type(const type &node) { \
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if (callbacks_->end_visit_##snake_type) { \
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callbacks_->end_visit_##snake_type( \
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(const struct GraphQLAst##type *)&node, userData_); \
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} \
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}
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FOR_EACH_CONCRETE_TYPE(IMPLEMENT_VISIT)
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void graphql_node_visit(const struct GraphQLAstNode *node,
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const struct GraphQLAstVisitorCallbacks *callbacks,
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void *userData)
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{
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CVisitorBridge visitor(callbacks, userData);
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if (node) {
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reinterpret_cast<const facebook::graphql::ast::Node *>(node)->accept(&visitor);
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}
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}
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