#include "ast_basic.h"
#include <QDebug>

using namespace ast_basic;
using namespace lib_token;
using namespace lib_syntax;

ExpressionElement::ExpressionElement(std::shared_ptr<const ExpressionRule> bind) : _expr_rule(bind) {}

std::shared_ptr<const ExpressionRule> ExpressionElement::definedRule() const {
	return _expr_rule;
}

QString ExpressionElement::filePath() const {
	if (!tokens_bind.size())
		throw new SyntaxException(u8"InternalError[0x0002]一个空的非法无效节点");

	return tokens_bind.first()->file();
}

void ExpressionElement::tokensReset(const QList<std::shared_ptr<const IToken>>& list) {
	this->tokens_bind = list;
}

void ExpressionElement::addToken(std::shared_ptr<const IToken> token_inst) {
	this->tokens_bind.append(token_inst);
}

QList<std::shared_ptr<const Expression>> ExpressionElement::children() const {
	return this->children_store;
}

void ExpressionElement::addChild(std::shared_ptr<const Expression> inst) {
	this->children_store.append(inst);
}

QList<std::shared_ptr<const IToken>> ExpressionElement::tokens() const {
	return this->tokens_bind;
}

ExpressionContext::ExpressionContext() {}

void ExpressionContext::setCurrentFile(const QString& path) { this->current_file_path = path; }

QString ExpressionContext::currentFile() const { return this->current_file_path; }

std::shared_ptr<Expression> ExpressionContext::currentInst() const
{
	if (expression_stack.size())
		return expression_stack.last();

	return nullptr;
}

void ExpressionContext::pushInst(std::shared_ptr<Expression> current_inst)
{
	if (!expression_stack.size() || expression_stack.last() != current_inst)
		expression_stack.append(current_inst);
}

std::shared_ptr<Expression> ExpressionContext::popInst()
{
	auto lastx = expression_stack.takeLast();
	return lastx;
}

std::shared_ptr<const BaseRule> ExpressionContext::currentExpressionRule() const {
	if (rule_stack.size())
		return rule_stack.last();
	return nullptr;
}

void ExpressionContext::pushExpressionRule(std::shared_ptr<const BaseRule> inst) {
	if (!rule_stack.size() || rule_stack.last() != inst)
		rule_stack.append(inst);
}

std::shared_ptr<const BaseRule> ExpressionContext::popExpressionRule()
{
	return rule_stack.takeLast();
}

void ExpressionContext::appendParseErrors(int start, const QString& e) {
	this->errors_storage.append(std::make_tuple(start, e));
}

QStringList ExpressionContext::errors() const {
	QStringList values;
	for (auto& tp : this->errors_storage)
		values.append(std::get<1>(tp));

	return values;
}

void ExpressionContext::clearErrors(int start) {
	for (int idx = 0; idx < this->errors_storage.size(); ++idx) {
		auto &tp = errors_storage[idx];
		if(std::get<0>(tp) >= start)
			errors_storage.removeAt(idx--);
	}
}

QList<std::shared_ptr<const BaseRule>> ExpressionContext::currentExpressionRuleStack() const {
	return rule_stack;
}