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%% Copyright (c) 2023 Peter Morgan <peter.james.morgan@gmail.com> |
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%% |
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%% Licensed under the Apache License, Version 2.0 (the "License"); |
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%% you may not use this file except in compliance with the License. |
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%% You may obtain a copy of the License at |
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%% |
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%% http://www.apache.org/licenses/LICENSE-2.0 |
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%% |
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%% Unless required by applicable law or agreed to in writing, software |
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%% distributed under the License is distributed on an "AS IS" BASIS, |
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%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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%% See the License for the specific language governing permissions and |
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%% limitations under the License. |
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-module(pgsqlp_copy). |
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-feature(maybe_expr, enable). |
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-export([expression/0]). |
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-import(pgsqlp, [name/0]). |
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-import(pgsqlp, [t/1]). |
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-import(pgsqlp, [to_atom/1]). |
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-import(scran_branch, [alt/1]). |
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-import(scran_character_complete, [multispace1/0]). |
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-import(scran_character_complete, [tag/1]). |
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-import(scran_character_complete, [tag_no_case/1]). |
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-import(scran_combinator, [opt/1]). |
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-import(scran_multi, [separated_list1/2]). |
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-import(scran_result, [kv/2]). |
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-import(scran_sequence, [delimited/3]). |
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-import(scran_sequence, [preceded/2]). |
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-import(scran_sequence, [sequence/1]). |
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-include_lib("kernel/include/logger.hrl"). |
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expression() -> |
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fun |
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(Input) -> |
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(sequence( |
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[kv(action, to_atom(tag_no_case("COPY"))), |
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alt( |
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[sequence( |
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[preceded( |
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multispace1(), |
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table_name()), |
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opt(preceded( |
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multispace1(), |
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delimited(tag("("), |
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pgsqlp_scalar:column_references(), |
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tag(")"))))]), |
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pgsqlp_scalar:expression()]), |
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to()]))(Input) |
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end. |
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to() -> |
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fun |
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(Input) -> |
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(sequence( |
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[preceded( |
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sequence([multispace1(), |
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tag_no_case("TO"), |
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multispace1()]), |
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alt([kv(filename, delimited(tag("'"), name(), tag("'"))), |
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kv(program, |
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preceded( |
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tag_no_case("PROGRAM"), |
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preceded( |
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multispace1(), |
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delimited(tag("'"), name(), tag("'"))))), |
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t(tag_no_case("STDOUT"))]))]))(Input) |
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end. |
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table_name() -> |
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fun |
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(Input) -> |
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(kv(?FUNCTION_NAME, |
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separated_list1( |
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tag("."), |
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name())))(Input) |
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end. |