57 lines
1.7 KiB
C++
57 lines
1.7 KiB
C++
#include "ast_gen.h"
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using namespace ast_gen;
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using namespace ast_basic;
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using namespace lib_token;
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using namespace lib_syntax;
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using namespace lib_words;
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SyntaxParser::SyntaxParser(std::shared_ptr<const IBasicRule> rule)
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: _rule_bind(rule) { }
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QList<std::shared_ptr<const MatchCursor>> SyntaxParser::parse(std::shared_ptr<const IPrimitiveWord> words) {
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auto cursor = std::make_shared<MatchCursor>(words->file());
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cursor->setCurrent(nullptr, words);
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QList<std::shared_ptr<const MatchCursor>> out;
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auto list = this->_rule_bind->parse(cursor, out);
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if (out.size())
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list = out;
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QHash<QString, std::shared_ptr<const MatchCursor>> result_map;
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std::for_each(list.begin(), list.end(),
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[&](std::shared_ptr<const MatchCursor> ins) {
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result_map[ins->parseSyntax()] = ins;
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});
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list = result_map.values();
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std::sort(list.begin(), list.end(),
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[&](std::shared_ptr<const MatchCursor> a, std::shared_ptr<const MatchCursor> b) {
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auto mark_a = a->currentToken()->position() * 100 - a->totalErrorCount();
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auto mark_b = b->currentToken()->position() * 100 - b->totalErrorCount();
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return mark_a > mark_b;
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});
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return list;
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}
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#include "tokens_impl.h"
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std::shared_ptr<IExprInstance> ast_gen::SyntaxParser::getAst(
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std::shared_ptr<const lib_syntax::MatchCursor> cursor, std::shared_ptr<IExprInstance> root) {
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QList<std::shared_ptr<const IActionToken>> token_seqs;
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std::shared_ptr<const IActionToken> action_token = cursor->currentToken();
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while (action_token) {
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token_seqs.prepend(action_token);
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action_token = action_token->prevToken();
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}
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auto expr_inst = root;
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for (auto ins_t : token_seqs) {
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expr_inst = std::const_pointer_cast<IActionToken>(ins_t)->makeSure(expr_inst);
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}
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return expr_inst;
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}
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