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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). |
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-feature(maybe_expr, enable). |
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-export([name/0]). |
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-export([parse/1]). |
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-export([priv_consult/1]). |
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-export([priv_dir/0]). |
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-export([reserved/0]). |
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-export([t/0]). |
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-export([t/1]). |
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-export([to_atom/1]). |
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-import(scran_branch, [alt/1]). |
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-import(scran_character_complete, [re_no_case/1]). |
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-import(scran_combinator, [is_not/1]). |
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-import(scran_combinator, [map_parser/2]). |
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-import(scran_combinator, [map_result/2]). |
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-import(scran_result, [into_atom/1]). |
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-import(scran_result, [into_map/1]). |
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-import(scran_result, [into_snake_case/1]). |
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priv_dir() -> |
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code:priv_dir(?MODULE). |
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priv_consult(Filename) -> |
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phrase_file:consult(filename:join(priv_dir(), Filename)). |
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parse(SQL) -> |
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maybe |
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{_, Result} ?= (into_map( |
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alt([pgsqlp_select:expression(), |
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pgsqlp_copy:expression(), |
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pgsqlp_tx:expression(), |
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pgsqlp_replication:expression()])))(SQL), |
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Result |
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end. |
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t(Parser) -> |
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fun |
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(Input) -> |
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(map_result( |
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to_atom(Parser), |
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t()))(Input) |
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end. |
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t() -> |
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fun |
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(Value) -> |
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{Value, true} |
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end. |
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to_atom(Parser) -> |
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fun |
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(Input) -> |
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(into_atom(into_snake_case(Parser)))(Input) |
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end. |
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name() -> |
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fun |
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(Input) -> |
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(map_parser( |
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re_no_case("[a-z_]+"), |
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is_not( |
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pgsqlp:reserved())))(Input) |
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end. |
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reserved() -> |
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fun |
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(Input) -> |
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(pgsqlp_keyword:by_category(reserved_keyword))(Input) |
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end. |