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commit_templater: support extensions of the template language
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| // Copyright 2024 The Jujutsu Authors | ||
| // | ||
| // 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 | ||
| // | ||
| // https://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. | ||
|
|
||
| use std::sync::Arc; | ||
|
|
||
| use jj_cli::cli_util::CliRunner; | ||
| use jj_cli::commit_templater::{ | ||
| CommitTemplateBuildFnTable, CommitTemplateLanguageExtension, CommitTemplatePropertyKind, | ||
| }; | ||
| use jj_cli::template_builder::CoreTemplatePropertyKind; | ||
| use jj_cli::template_parser::{self, ExpressionKind, ExpressionNode, TemplateParseError}; | ||
| use jj_cli::templater::{TemplateFunction, TemplatePropertyError}; | ||
| use jj_lib::commit::Commit; | ||
| use jj_lib::object_id::ObjectId; | ||
|
|
||
| struct HexCounter; | ||
|
|
||
| fn num_digits_in_id(commit: Commit) -> Result<i64, TemplatePropertyError> { | ||
| let mut count = 0; | ||
| for ch in commit.id().hex().chars() { | ||
| if ch.is_ascii_digit() { | ||
| count += 1; | ||
| } | ||
| } | ||
| Ok(count) | ||
| } | ||
|
|
||
| fn num_char_in_id(commit: Commit, ch_match: char) -> Result<i64, TemplatePropertyError> { | ||
| let mut count = 0; | ||
| for ch in commit.id().hex().chars() { | ||
| if ch == ch_match { | ||
| count += 1; | ||
| } | ||
| } | ||
| Ok(count) | ||
| } | ||
|
|
||
| impl CommitTemplateLanguageExtension for HexCounter { | ||
| fn build_fn_table<'repo>(&self) -> CommitTemplateBuildFnTable<'repo> { | ||
| let mut table = CommitTemplateBuildFnTable::empty(); | ||
| table.commit_methods.insert( | ||
| "num_digits_in_id", | ||
| |_language, _build_context, property, call| { | ||
| template_parser::expect_no_arguments(call)?; | ||
| Ok(CommitTemplatePropertyKind::Core( | ||
| CoreTemplatePropertyKind::Integer(Box::new(TemplateFunction::new( | ||
| property, | ||
| num_digits_in_id, | ||
| ))), | ||
| )) | ||
| }, | ||
| ); | ||
| table.commit_methods.insert( | ||
| "num_char_in_id", | ||
| |_language, _build_context, property, call| match &call.args[..] { | ||
| [ExpressionNode { | ||
| kind: ExpressionKind::String(string), | ||
| span: _, | ||
| }] => { | ||
| let chars: Vec<_> = string.chars().collect(); | ||
| if chars.len() != 1 { | ||
| return Err(TemplateParseError::invalid_arguments( | ||
| call, | ||
| "Expected single character argument", | ||
| )); | ||
| } | ||
|
|
||
| let char = chars[0]; | ||
| Ok(CommitTemplatePropertyKind::Core( | ||
| CoreTemplatePropertyKind::Integer(Box::new(TemplateFunction::new( | ||
| property, | ||
| move |commit| num_char_in_id(commit, char), | ||
| ))), | ||
| )) | ||
| } | ||
| _ => Err(TemplateParseError::invalid_arguments( | ||
| call, | ||
| "Expected single character argument", | ||
| )), | ||
| }, | ||
| ); | ||
|
|
||
| table | ||
| } | ||
| } | ||
|
|
||
| fn main() -> std::process::ExitCode { | ||
| CliRunner::init() | ||
| .set_commit_template_extension(Arc::new(HexCounter)) | ||
| .run() | ||
| } |
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