Feb 15th 2023 update

external/graphqlparser/GraphQLParser.cpp

@@ -0,0 +1,76 @@
+/**
+ * Copyright 2019-present, GraphQL Foundation
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#include "GraphQLParser.h"
+
+#include "AstNode.h"
+
+#include "parser.tab.hpp"
+#include "lexer.h"
+#include "syntaxdefs.h"
+
+namespace facebook {
+namespace graphql {
+
+// Given properly-configured yylex, run the parser and return the
+// result.
+static std::unique_ptr<ast::Node> doParse(const char **outError, yyscan_t scanner, bool enableSchema) {
+  Node *outAST = nullptr;
+  yy::GraphQLParserImpl parser(enableSchema, &outAST, outError, scanner);
+  int failure = parser.parse();
+  if (failure) {
+    delete outAST;
+  }
+  return !failure ? std::unique_ptr<ast::Node>(outAST) : nullptr;
+}
+
+static std::unique_ptr<ast::Node> parseStringImpl(const char *text, const char **error, bool enableSchema) {
+  yyscan_t scanner;
+  struct LexerExtra extra;
+  yylex_init_extra(&extra, &scanner);
+  YY_BUFFER_STATE buffer = yy_scan_string(text, scanner);
+  yy_switch_to_buffer(buffer, scanner);
+
+  auto result = doParse(error, scanner, enableSchema);
+  yylex_destroy(scanner);
+  return result;
+}
+
+std::unique_ptr<ast::Node> parseString(const char *text, const char **error) {
+  return parseStringImpl(text, error, false);
+}
+
+std::unique_ptr<ast::Node> parseStringWithExperimentalSchemaSupport(
+    const char *text, const char **error) {
+  return parseStringImpl(text, error, true);
+}
+
+static std::unique_ptr<ast::Node> parseFileImpl(
+    FILE *file, const char **error, bool enableSchema) {
+  yyscan_t scanner;
+  struct LexerExtra extra;
+  yylex_init_extra(&extra, &scanner);
+  yyset_in(file, scanner);
+
+  auto result = doParse(error, scanner, enableSchema);
+  yylex_destroy(scanner);
+
+  return result;
+}
+
+std::unique_ptr<ast::Node> parseFile(FILE *file, const char **error) {
+  return parseFileImpl(file, error, false);
+}
+
+std::unique_ptr<ast::Node> parseFileWithExperimentalSchemaSupport(
+    FILE *file, const char **error) {
+  return parseFileImpl(file, error, true);
+}
+
+
+}  // namespace graphql
+}  // namespace facebook