116 lines
4.9 KiB
C++
116 lines
4.9 KiB
C++
#include "syntax_novel.h"
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#include <tokens_novel.h>
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using namespace lib_syntax;
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using namespace example_novel;
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using namespace lib_token;
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using namespace ast_basic;
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// token-avaliable ==========================================================================
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auto leftb = std::make_shared<LeftBracket>(); // {
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auto rightb = std::make_shared<RightBracket>(); // }
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auto refers = std::make_shared<ReferMark>(); // @
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auto story = std::make_shared<Keywords>(u8"故事", u8"story-mark"); // 故事
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auto numbers = std::make_shared<Numbers>(); // [0-9]+
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auto frags = std::make_shared<Keywords>(u8"情节", u8"fragment-mark"); // 情节
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auto volume = std::make_shared<Keywords>(u8"分卷", u8"volume-mark"); // 分卷
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auto article = std::make_shared<Keywords>(u8"章节", u8"article-mark"); // 章节
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auto split = std::make_shared<Split>(); // &
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auto vtext = std::make_shared<VTextSection>(); // ^([^\\{\\}\\n@&]+)
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auto ntext = std::make_shared<NameSection>(); // ^([^:\\{\\}\\n@&][^\\{\\}\\n@&]*)
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auto newl = std::make_shared<NewLine>();
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// rule-parts ===============================================================================
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// MatchRule
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#define MR(x) std::make_shared<const TokenMatch>(x)
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// Buffer
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#define Rules QList<std::shared_ptr<const BaseRule>>
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// Option
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#define OptMulT(token) std::make_shared<const Rept>(MR(token), 0, INT_MAX)
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#define OptMulR(rule) std::make_shared<const Rept>(rule, 0, INT_MAX)
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// multi+
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#define MultiR(rule) std::make_shared<const Rept>(rule, 1, INT_MAX)
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QList<std::shared_ptr<const BaseRule>> LinesMerge(const QList<std::shared_ptr<const BaseRule>>& mbrs) {
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QList<std::shared_ptr<const BaseRule>> values_ret;
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for (auto& item : mbrs) {
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values_ret << item << OptMulT(newl);
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}
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return values_ret;
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}
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QList<std::shared_ptr<const BaseRule>> LinesMerge(std::shared_ptr<const BaseRule> item) {
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return QList<std::shared_ptr<const BaseRule>>() << item << OptMulT(newl);
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}
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// remove-return
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auto remove_nl = [](const ExprRule::TokenSeqs& p)->ExprRule::TokenSeqs {
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ExprRule::TokenSeqs result;
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for (auto& n : p) {
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if (n->isLeaf()) {
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auto target_token = n->tokens().first();
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if (target_token->define()->name() == newl->name())
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continue;
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}
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result.append(n);
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}
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return result;
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};
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auto decl_comp = std::make_shared<const Any>(Rules{MR(numbers), MR(vtext), MR(ntext), MR(split)});
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auto decl_expr = ExprRule(u8"decl_section", (int)NovelExprs::DESC_SECTION).reloadRule(remove_nl,
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std::make_shared<const Seqs>(LinesMerge(MultiR(decl_comp))
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));
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auto fragment_decl = ExprRule(u8"fragment_define", (int)NovelExprs::FRAG_DEFINES).reloadRule(remove_nl, std::make_shared<const Seqs>(
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LinesMerge(Rules{MR(leftb), MR(frags), MR(ntext)}) <<
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OptMulR(decl_expr) <<
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LinesMerge(MR(rightb))
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));
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auto fragment_refer = ExprRule(u8"fragment_refer", (int)NovelExprs::FRAG_REFERS).reloadRule(remove_nl, std::make_shared<const Seqs>(
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LinesMerge(Rules{MR(leftb), MR(refers), MR(frags), MR(ntext), MR(split), MR(ntext)}) <<
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OptMulR(decl_expr) <<
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LinesMerge(MR(rightb))
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));
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auto fragment_comp = std::make_shared<const Any>(Rules{fragment_decl, fragment_refer, decl_expr});
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auto story_define = ExprRule(u8"story_define", (int)NovelExprs::STORY_DEFINES).reloadRule(remove_nl, std::make_shared<const Seqs>(
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LinesMerge(Rules{ MR(leftb), MR(story), MR(numbers), MR(ntext)}) <<
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OptMulR(fragment_comp) <<
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LinesMerge(MR(rightb))
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));
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// ===================================================================
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auto article_decl = ExprRule(u8"article_define", (int)NovelExprs::ARTICLE_DEFINE).reloadRule(remove_nl, std::make_shared<const Seqs>(
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LinesMerge(Rules{ MR(leftb), MR(article), MR(ntext)}) <<
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OptMulR(std::make_shared<const Any>(Rules{ fragment_refer, decl_expr })) <<
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LinesMerge(MR(rightb))
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));
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auto volume_decl = ExprRule(u8"volume_define", (int)NovelExprs::VOLUME_DEFINE).reloadRule(remove_nl, std::make_shared<const Seqs>(
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LinesMerge(Rules{ MR(leftb), MR(volume), MR(ntext)}) <<
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OptMulR(std::make_shared<const Any>(Rules{ decl_expr, article_decl })) <<
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LinesMerge(MR(rightb))
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));
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auto document_define = ExprRule(u8"decls-doc", (int)NovelExprs::DOC_DEFINES).reloadRule(remove_nl, std::make_shared<const Seqs>(
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Rules{
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OptMulT(newl),
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MultiR(std::make_shared<const Any>(Rules{story_define, volume_decl}))
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}
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));
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std::shared_ptr<const ExprRule> NovalSyntax::getParseTree() { return document_define; }
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std::shared_ptr<const TokenReader> NovalSyntax::getLexReader()
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{
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auto inst = std::make_shared<lib_token::TokenReader>(QList<std::shared_ptr<const lib_token::TokenDefine>>()
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<< leftb << rightb << refers << split << story << frags << volume << article << numbers << ntext << vtext << newl);
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return inst;
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}
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