89 lines
3.3 KiB
C++
89 lines
3.3 KiB
C++
// Copyright (C) 2017 Jonathan Müller <jonathanmueller.dev@gmail.com>
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// This file is subject to the license terms in the LICENSE file
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// found in the top-level directory of this distribution.
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#include <cppast/cpp_enum.hpp>
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#include "parse_functions.hpp"
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#include "libclang_visitor.hpp"
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using namespace cppast;
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namespace
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{
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std::unique_ptr<cpp_enum_value> parse_enum_value(const detail::parse_context& context,
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const CXCursor& cur)
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{
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DEBUG_ASSERT(cur.kind == CXCursor_EnumConstantDecl, detail::parse_error_handler{}, cur,
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"unexpected child cursor of enum");
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detail::tokenizer tokenizer(context.tu, context.file, cur);
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detail::token_stream stream(tokenizer, cur);
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// <identifier> [<attribute>],
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// or: <identifier> [<attribute>] = <expression>,
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auto& name = stream.get().value();
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detail::skip_attribute(stream);
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std::unique_ptr<cpp_expression> value;
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if (detail::skip_if(stream, "="))
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{
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detail::visit_children(cur, [&](const CXCursor& child) {
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DEBUG_ASSERT(clang_isExpression(child.kind) && !value,
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detail::parse_error_handler{}, cur,
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"unexpected child cursor of enum value");
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value = detail::parse_expression(context, child);
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});
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}
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return cpp_enum_value::build(*context.idx, detail::get_entity_id(cur), name.c_str(),
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std::move(value));
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}
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cpp_enum::builder make_enum_builder(const detail::parse_context& context, const CXCursor& cur)
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{
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detail::tokenizer tokenizer(context.tu, context.file, cur);
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detail::token_stream stream(tokenizer, cur);
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// [<attribute>] enum [class] [<attribute>] name [: type] {
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detail::skip_attribute(stream);
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detail::skip(stream, "enum");
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auto scoped = detail::skip_if(stream, "class");
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detail::skip_attribute(stream);
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auto& name = stream.get().value();
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std::unique_ptr<cpp_type> type;
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if (detail::skip_if(stream, ":"))
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// parse type, explictly given one
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type = detail::parse_type(context, cur, clang_getEnumDeclIntegerType(cur));
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return cpp_enum::builder(name.c_str(), scoped, std::move(type));
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}
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}
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std::unique_ptr<cpp_entity> detail::parse_cpp_enum(const detail::parse_context& context,
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const CXCursor& cur)
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{
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DEBUG_ASSERT(cur.kind == CXCursor_EnumDecl, detail::assert_handler{});
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auto builder = make_enum_builder(context, cur);
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context.comments.match(builder.get(), cur);
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detail::visit_children(cur, [&](const CXCursor& child) {
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try
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{
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auto entity = parse_enum_value(context, child);
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if (entity)
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context.comments.match(*entity, child);
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builder.add_value(std::move(entity));
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}
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catch (parse_error& ex)
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{
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context.logger->log("libclang parser", ex.get_diagnostic());
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}
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});
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if (clang_isCursorDefinition(cur))
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return builder.finish(*context.idx, get_entity_id(cur));
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else
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return builder.finish_declaration(*context.idx, get_entity_id(cur));
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}
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