336 lines
11 KiB
C++
336 lines
11 KiB
C++
#pragma once
|
|
|
|
#include "libsyntax_global.h"
|
|
#include "libtokens.h"
|
|
#include "tokens_impl.h"
|
|
#include <memory>
|
|
#include <QtCore/QList>
|
|
#include <tuple>
|
|
#include <functional>
|
|
#include "ast_basic.h"
|
|
|
|
namespace lib_syntax {
|
|
/**
|
|
* @brief 语法异常
|
|
*/
|
|
class LIBSYNTAX_EXPORT SyntaxException {
|
|
private:
|
|
QString msg_store;
|
|
|
|
public:
|
|
SyntaxException(const QString& message);
|
|
virtual ~SyntaxException() = default;
|
|
|
|
virtual QString message() const;
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
// 基础语法解析接口 ====================================================================================
|
|
/**
|
|
* @brief 解析上下文接口
|
|
*/
|
|
class LIBSYNTAX_EXPORT MatchCursor {
|
|
public:
|
|
class ErrsPack {
|
|
public:
|
|
void addError(const QString& msg);
|
|
QList<QString> errors() const;
|
|
uint64_t errorCount() const;
|
|
|
|
private:
|
|
QList<QString> _error_collection;
|
|
};
|
|
|
|
MatchCursor(const QString& path);
|
|
MatchCursor(std::shared_ptr<const MatchCursor> other_ptr);
|
|
virtual ~MatchCursor() = default;
|
|
|
|
virtual std::shared_ptr<const MatchCursor> previous() const;
|
|
virtual QString filePath() const;
|
|
|
|
virtual void enterExprs();
|
|
virtual void logExprsError(const QString& msg);
|
|
virtual void quitExprs();
|
|
|
|
virtual bool mustStop() const;
|
|
virtual int exprsErrorCount() const;
|
|
virtual int totalErrorCount() const;
|
|
virtual QList<QString> totalErrors() const;
|
|
|
|
virtual void setCurrent(std::shared_ptr<const lib_token::IActionToken> t, std::shared_ptr<const lib_words::IPrimitiveWord> remains);
|
|
virtual std::shared_ptr<const lib_token::IActionToken> currentToken() const;
|
|
virtual std::shared_ptr<const lib_words::IPrimitiveWord> currentWords() const;
|
|
|
|
private:
|
|
QString _file_path;
|
|
std::shared_ptr<const MatchCursor> _prev_cursor = nullptr;
|
|
|
|
QList<QString> _total_errors; // 所有解析错误
|
|
QList<std::shared_ptr<ErrsPack>> _exprs_errors; // 当前表达式解析错误
|
|
std::shared_ptr<const lib_token::IActionToken> _current_token = nullptr; // 当前Token
|
|
std::shared_ptr<const lib_words::IPrimitiveWord> _remains_word = nullptr; // 剩余词语
|
|
|
|
bool parse_stop() const;
|
|
};
|
|
|
|
/**
|
|
* @brief 基础语法匹配规则接口
|
|
*/
|
|
class IBasicRule {
|
|
public:
|
|
/**
|
|
* 返回匹配语法规则的词法序列表达
|
|
*
|
|
* \return 词法表达序列
|
|
*/
|
|
virtual QString present() const = 0;
|
|
|
|
/**
|
|
* @brief 解析
|
|
* @param rt_inst 解析上下文
|
|
* @param head 列表头
|
|
* @return 返回结果<匹配完成新列表头,匹配长度>
|
|
*/
|
|
virtual QList<std::shared_ptr<const MatchCursor>> parse(std::shared_ptr<const MatchCursor> cursor) const = 0;
|
|
|
|
/**
|
|
* @brief 子规则
|
|
* @return
|
|
*/
|
|
virtual QList<std::shared_ptr<const IBasicRule>> children() const = 0;
|
|
};
|
|
|
|
// 组合语法实体解析 =====================================================================================
|
|
/**
|
|
* @brief 语法规则或匹配
|
|
*/
|
|
class LIBSYNTAX_EXPORT Any : public IBasicRule, public std::enable_shared_from_this<Any> {
|
|
private:
|
|
QList<std::shared_ptr<const IBasicRule>> mbrs_store;
|
|
|
|
public:
|
|
Any(const QList<std::shared_ptr<const IBasicRule>> mbrs);
|
|
|
|
// IBasicRule interface
|
|
public:
|
|
virtual QList<std::shared_ptr<const IBasicRule>> children() const override;
|
|
virtual QList<std::shared_ptr<const MatchCursor>> parse(std::shared_ptr<const MatchCursor> cursor) const override;
|
|
virtual QString present() const override;
|
|
};
|
|
|
|
/**
|
|
* @brief 语法规则序列匹配
|
|
*/
|
|
class LIBSYNTAX_EXPORT Seqs : public IBasicRule, public std::enable_shared_from_this<Seqs> {
|
|
private:
|
|
QList<std::shared_ptr<const IBasicRule>> mbrs_store;
|
|
|
|
public:
|
|
Seqs(const QList<std::shared_ptr<const IBasicRule>> mbrs);
|
|
|
|
// IBasicRule interface
|
|
public:
|
|
virtual QList<std::shared_ptr<const IBasicRule>> children() const override;
|
|
virtual QList<std::shared_ptr<const MatchCursor>> parse(std::shared_ptr<const MatchCursor> cursor) const override;
|
|
virtual QString present() const override;
|
|
};
|
|
|
|
/**
|
|
* @brief 语法规则重复匹配
|
|
*/
|
|
class LIBSYNTAX_EXPORT Rept : public IBasicRule, public std::enable_shared_from_this<Rept> {
|
|
private:
|
|
std::shared_ptr<const IBasicRule> rule_peer;
|
|
int min_match, max_match;
|
|
|
|
public:
|
|
Rept(std::shared_ptr<const IBasicRule> rule, int min, int max);
|
|
|
|
// IBasicRule interface
|
|
public:
|
|
virtual QList<std::shared_ptr<const IBasicRule>> children() const override;
|
|
virtual QList<std::shared_ptr<const MatchCursor>> parse(std::shared_ptr<const MatchCursor> cursor) const override;
|
|
virtual QString present() const override;
|
|
};
|
|
|
|
/**
|
|
* @brief 对应语法表达式解析规则
|
|
*/
|
|
class LIBSYNTAX_EXPORT ExprRule : public IBasicRule, public std::enable_shared_from_this<ExprRule> {
|
|
public:
|
|
ExprRule(const QString& rule_name, int expr_mark);
|
|
|
|
virtual QString name() const;
|
|
virtual int typeMark() const;
|
|
virtual std::shared_ptr<const ExprRule> reloadRule(std::shared_ptr<const IBasicRule> rule) const;
|
|
|
|
// IBasicRule interface
|
|
public:
|
|
virtual QList<std::shared_ptr<const IBasicRule>> children() const override;
|
|
virtual QString present() const override;
|
|
|
|
protected:
|
|
std::shared_ptr<const IBasicRule> child_store;
|
|
virtual std::shared_ptr<ExprRule> make_copy() const = 0;
|
|
|
|
private:
|
|
QString name_store;
|
|
int mark_store;
|
|
};
|
|
|
|
|
|
|
|
/**
|
|
* @brief token匹配
|
|
*/
|
|
template<typename T, lib_token::TokenProcs<T> XProc = nullptr>
|
|
class TokenMatch : public IBasicRule, public std::enable_shared_from_this<TokenMatch<T, XProc>> {
|
|
private:
|
|
std::shared_ptr<const lib_token::ITokenProcess> _define_peers;
|
|
|
|
public:
|
|
TokenMatch(std::shared_ptr<const lib_token::ITokenProcess> define) : _define_peers(define) { }
|
|
|
|
// IBasicRule interface
|
|
public:
|
|
virtual QString present() const override {
|
|
return QString(u8"%1").arg(this->_define_peers->reviseWords());
|
|
}
|
|
virtual QList<std::shared_ptr<const MatchCursor>> parse(std::shared_ptr<const MatchCursor> current) const override {
|
|
auto w_this = current->currentWords();
|
|
if (!w_this) {
|
|
auto clone_ins = std::make_shared<MatchCursor>(current);
|
|
clone_ins->logExprsError(QString(u8"Syntax[0x00001]语法匹配错误，缺失\"%1\"<file<%2>>")
|
|
.arg(this->_define_peers->reviseWords()).arg(current->filePath()));
|
|
clone_ins->logExprsError(QString(u8"Syntax[0x00001]输入流提前结束,<%1>").arg(current->filePath()));
|
|
return QList<std::shared_ptr<const MatchCursor>>() << clone_ins;
|
|
}
|
|
|
|
|
|
auto t_this = current->currentToken();
|
|
|
|
auto match_result = _define_peers->analysis(w_this);
|
|
if (std::get<0>(match_result)) {
|
|
auto chain = std::make_shared<lib_token::ActionToken<T, XProc>>(std::get<0>(match_result), t_this);
|
|
auto remains = w_this->nextWord();
|
|
if (std::get<1>(match_result)) {
|
|
remains = std::make_shared<lib_words::WordImpl>(std::get<1>(match_result), remains);
|
|
}
|
|
|
|
auto clone_ins = std::make_shared<MatchCursor>(current);
|
|
clone_ins->setCurrent(chain, remains);
|
|
return QList<std::shared_ptr<const MatchCursor>>() << clone_ins;
|
|
}
|
|
else {
|
|
QList<std::shared_ptr<const MatchCursor>> retvals;
|
|
// 少一个
|
|
{
|
|
auto short_one = std::make_shared<MatchCursor>(current);
|
|
short_one->logExprsError(QString(u8"Syntax[0x00001]语法匹配错误，缺失\"%1\"<row:%2,col:%3,file<%4>>")
|
|
.arg(this->_define_peers->reviseWords())
|
|
.arg(w_this->row()).arg(w_this->column()).arg(w_this->file()));
|
|
retvals << short_one;
|
|
}
|
|
|
|
// 错一个
|
|
{
|
|
auto error_one = std::make_shared<MatchCursor>(current);
|
|
error_one->logExprsError(QString(u8"Syntax[0x00001]语法匹配错误，请修正\"%1\"<row:%2,col:%3,file<%4>>")
|
|
.arg(w_this->content()).arg(w_this->row()).arg(w_this->column()).arg(w_this->file()));
|
|
auto tkins = std::make_shared<lib_token::TokenContent>(
|
|
w_this->row(), w_this->column(), w_this->position(),
|
|
QString(u8"%2_%1").arg((uint64_t) error_one.get()).arg(this->_define_peers->reviseWords()),
|
|
w_this->file(), this->_define_peers);
|
|
auto tkchain = std::make_shared<lib_token::ActionToken<T, XProc>>(tkins, t_this);
|
|
error_one->setCurrent(tkchain, w_this->nextWord());
|
|
retvals << error_one;
|
|
}
|
|
|
|
// 多一个
|
|
if (w_this->nextWord()) {
|
|
auto nx_word = w_this->nextWord();
|
|
auto nx_result = this->_define_peers->analysis(nx_word);
|
|
if (std::get<0>(nx_result)) {
|
|
auto chain = std::make_shared<lib_token::ActionToken<T, XProc>>(std::get<0>(nx_result), t_this);
|
|
auto remains = nx_word->nextWord();
|
|
if (std::get<1>(nx_result)) {
|
|
remains = std::make_shared<lib_words::WordImpl>(std::get<1>(nx_result), remains);
|
|
}
|
|
|
|
auto clone_ins = std::make_shared<MatchCursor>(current);
|
|
clone_ins->logExprsError(QString(u8"Syntax[0x00001]语法匹配错误，请删除\"%1\"<row:%2,col:%3,file<%4>>")
|
|
.arg(w_this->content()).arg(w_this->row()).arg(w_this->column()).arg(w_this->file()));
|
|
clone_ins->setCurrent(chain, remains);
|
|
retvals << clone_ins;
|
|
}
|
|
}
|
|
|
|
return retvals;
|
|
}
|
|
}
|
|
virtual QList<std::shared_ptr<const IBasicRule>> children() const override {
|
|
return QList<std::shared_ptr<const IBasicRule>>();
|
|
}
|
|
};
|
|
|
|
/**
|
|
* 语法元素解析规则.
|
|
*/
|
|
template<class ExprType> class ElementRule : public ExprRule {
|
|
public:
|
|
ElementRule(const QString& rule_name, int expr_mark)
|
|
:ExprRule(rule_name, expr_mark) { }
|
|
|
|
virtual QList<std::shared_ptr<const MatchCursor>> parse(std::shared_ptr<const MatchCursor> cursor) const override {
|
|
if (cursor->mustStop())
|
|
return QList<std::shared_ptr<const MatchCursor>>() << cursor;
|
|
|
|
auto t_this = cursor->currentToken();
|
|
auto w_this = cursor->currentWords();
|
|
auto split_begin = std::make_shared<lib_token::ExprBeginToken<ExprType>>(shared_from_this(), t_this);
|
|
|
|
auto ncursor = std::make_shared<MatchCursor>(cursor);
|
|
ncursor->setCurrent(split_begin, w_this);
|
|
ncursor->enterExprs();
|
|
|
|
auto nbranch = this->child_store->parse(ncursor);
|
|
decltype(nbranch) list_ok;
|
|
std::copy_if(nbranch.begin(), nbranch.end(), std::back_inserter(list_ok),
|
|
[](std::shared_ptr<const MatchCursor> ins) { return !ins->exprsErrorCount(); });
|
|
if (!list_ok.size()) {
|
|
std::copy_if(nbranch.begin(), nbranch.end(), std::back_inserter(list_ok),
|
|
[](std::shared_ptr<const MatchCursor> ins) { return !ins->mustStop(); });
|
|
if (!list_ok.size())
|
|
list_ok = nbranch;
|
|
}
|
|
|
|
decltype(list_ok) branch_procs;
|
|
std::for_each(list_ok.begin(), list_ok.end(), [&](std::shared_ptr<const MatchCursor> curs) {
|
|
if (curs->mustStop()) {
|
|
branch_procs.append(curs);
|
|
}
|
|
else {
|
|
auto t_end = curs->currentToken();
|
|
auto w_end = curs->currentWords();
|
|
|
|
auto ecursor = std::make_shared<MatchCursor>(curs);
|
|
ecursor->quitExprs();
|
|
|
|
auto split_end = std::make_shared<lib_token::ExprEndToken<ExprType>>(split_begin, t_end);
|
|
ecursor->setCurrent(split_end, w_end);
|
|
branch_procs.append(ecursor);
|
|
}
|
|
});
|
|
|
|
return branch_procs;
|
|
}
|
|
|
|
protected:
|
|
virtual std::shared_ptr<ExprRule> make_copy() const {
|
|
return std::make_shared<ElementRule<ExprType>>(this->name(), this->typeMark());
|
|
}
|
|
};
|
|
} // namespace lib_syntax
|