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Merge pull request #70 from Matts966/feature/support-scripting
Support for parsing scripts (only BEGIN END blocks are confirmed)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,61 @@ | ||
| // | ||
| // Copyright 2020 Matts966 | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
| // | ||
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|
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| #include "zetasql/parser/bison_parser.h" | ||
| #include "zetasql/parser/bison_parser_mode.h" | ||
| #include "zetasql/parser/parse_tree.h" | ||
| #include "zetasql/parser/parser.h" | ||
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|
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| namespace alphasql { | ||
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|
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| using namespace zetasql; | ||
| using namespace zetasql::parser; | ||
| using zetasql::parser::BisonParser; | ||
| using zetasql::parser::BisonParserMode; | ||
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| absl::Status ParseScript(absl::string_view script_string, | ||
| const ParserOptions &parser_options_in, | ||
| ErrorMessageMode error_message_mode, | ||
| std::unique_ptr<ParserOutput> *output, | ||
| const std::string &filename) { | ||
| ParserOptions parser_options = parser_options_in; | ||
| parser_options.CreateDefaultArenasIfNotSet(); | ||
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| BisonParser parser; | ||
| std::unique_ptr<ASTNode> ast_node; | ||
| std::vector<std::unique_ptr<ASTNode>> other_allocated_ast_nodes; | ||
| absl::Status status = parser.Parse( | ||
| BisonParserMode::kScript, filename, script_string, | ||
| /*start_byte_offset=*/0, parser_options.id_string_pool().get(), | ||
| parser_options.arena().get(), parser_options.language_options(), | ||
| &ast_node, &other_allocated_ast_nodes, | ||
| /*ast_statement_properties=*/nullptr, | ||
| /*statement_end_byte_offset=*/nullptr); | ||
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| std::unique_ptr<ASTScript> script; | ||
| if (status.ok()) { | ||
| ZETASQL_RET_CHECK_EQ(ast_node->node_kind(), AST_SCRIPT); | ||
| script = absl::WrapUnique(ast_node.release()->GetAsOrDie<ASTScript>()); | ||
| } | ||
| ZETASQL_RETURN_IF_ERROR(ConvertInternalErrorLocationAndAdjustErrorString( | ||
| error_message_mode, script_string, status)); | ||
| *output = absl::make_unique<ParserOutput>( | ||
| parser_options.id_string_pool(), parser_options.arena(), | ||
| std::move(other_allocated_ast_nodes), std::move(script)); | ||
| return absl::OkStatus(); | ||
| } | ||
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|
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| } // namespace alphasql |
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