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/*
* Copyright (C) 2015 The Android Open Source Project
*
* 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.
*/
#include "java/AnnotationProcessor.h"
#include <algorithm>
#include <array>
#include "text/Unicode.h"
#include "text/Utf8Iterator.h"
#include "util/Util.h"
using ::aapt::text::Printer;
using ::aapt::text::Utf8Iterator;
using ::android::StringPiece;
namespace aapt {
StringPiece AnnotationProcessor::ExtractFirstSentence(const StringPiece& comment) {
Utf8Iterator iter(comment);
while (iter.HasNext()) {
const char32_t codepoint = iter.Next();
if (codepoint == U'.') {
const size_t current_position = iter.Position();
if (!iter.HasNext() || text::IsWhitespace(iter.Next())) {
return comment.substr(0, current_position);
}
}
}
return comment;
}
struct AnnotationRule {
enum : uint32_t {
kDeprecated = 0x01,
kSystemApi = 0x02,
kTestApi = 0x04,
};
StringPiece doc_str;
uint32_t bit_mask;
StringPiece annotation;
};
static std::array<AnnotationRule, 2> sAnnotationRules = {{
{"@SystemApi", AnnotationRule::kSystemApi, "@android.annotation.SystemApi"},
{"@TestApi", AnnotationRule::kTestApi, "@android.annotation.TestApi"},
}};
void AnnotationProcessor::AppendCommentLine(std::string comment) {
static const std::string sDeprecated = "@deprecated";
// Treat deprecated specially, since we don't remove it from the source comment.
if (comment.find(sDeprecated) != std::string::npos) {
annotation_bit_mask_ |= AnnotationRule::kDeprecated;
}
for (const AnnotationRule& rule : sAnnotationRules) {
std::string::size_type idx = comment.find(rule.doc_str.data());
if (idx != std::string::npos) {
annotation_bit_mask_ |= rule.bit_mask;
comment.erase(comment.begin() + idx, comment.begin() + idx + rule.doc_str.size());
}
}
// Check if after removal of annotations the line is empty.
const StringPiece trimmed = util::TrimWhitespace(comment);
if (trimmed.empty()) {
return;
}
// If there was trimming to do, copy the string.
if (trimmed.size() != comment.size()) {
comment = trimmed.to_string();
}
if (!has_comments_) {
has_comments_ = true;
comment_ << "/**";
}
comment_ << "\n * " << std::move(comment);
}
void AnnotationProcessor::AppendComment(const StringPiece& comment) {
// We need to process line by line to clean-up whitespace and append prefixes.
for (StringPiece line : util::Tokenize(comment, '\n')) {
line = util::TrimWhitespace(line);
if (!line.empty()) {
AppendCommentLine(line.to_string());
}
}
}
void AnnotationProcessor::AppendNewLine() {
if (has_comments_) {
comment_ << "\n *";
}
}
void AnnotationProcessor::Print(Printer* printer) const {
if (has_comments_) {
std::string result = comment_.str();
for (const StringPiece& line : util::Tokenize(result, '\n')) {
printer->Println(line);
}
printer->Println(" */");
}
if (annotation_bit_mask_ & AnnotationRule::kDeprecated) {
printer->Println("@Deprecated");
}
for (const AnnotationRule& rule : sAnnotationRules) {
if (annotation_bit_mask_ & rule.bit_mask) {
printer->Println(rule.annotation);
}
}
}
} // namespace aapt
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