fix compile errors
This commit is contained in:
IlyaShurupov
Ilusha
parent
1d9ef2aa6c
commit
63b0560375
27 changed files with 19 additions and 21 deletions
333
.back/old/Tokenizer/public/RegularExpression.h
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333
.back/old/Tokenizer/public/RegularExpression.h
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#pragma once
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#include "AutomataGraph.h"
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namespace tp {
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extern ModuleManifest gModuleTokenizer;
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}
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namespace tp::RegEx {
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struct AstNode {
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enum Type {
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NONE,
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ANY,
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OR,
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IF,
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CLASS,
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COMPOUND,
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REPEAT,
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VAL,
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} mType = NONE;
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AstNode() = default;
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virtual ~AstNode() = default;
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};
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template <typename tAlphabetType>
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struct AstVal : public AstNode {
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explicit AstVal(tAlphabetType val) :
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mVal(val) {
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mType = VAL;
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}
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~AstVal() override = default;
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tAlphabetType mVal;
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};
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struct AstCompound : public AstNode {
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AstCompound() { mType = COMPOUND; }
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~AstCompound() override {
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for (auto iter : mChilds) {
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delete iter.data();
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}
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mChilds.removeAll();
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}
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List<AstNode*> mChilds;
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};
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struct AstAlternation : public AstNode {
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AstAlternation() { mType = OR; }
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~AstAlternation() override {
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delete mFirst;
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delete mSecond;
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}
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AstNode* mFirst = nullptr;
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AstNode* mSecond = nullptr;
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};
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struct AstIf : public AstNode {
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AstIf() { mType = IF; }
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~AstIf() override { delete mNode; }
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AstNode* mNode = nullptr;
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};
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struct AstAny : public AstNode {
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AstAny() { mType = ANY; }
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~AstAny() override = default;
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};
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struct AstRepetition : public AstNode {
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AstRepetition() { mType = REPEAT; }
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~AstRepetition() override { delete mNode; }
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AstNode* mNode = nullptr;
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bool mPlus = false;
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};
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template <typename tAlphabetType>
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struct AstClass : public AstNode {
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AstClass() { mType = CLASS; }
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~AstClass() override { mRanges.removeAll(); }
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List<Range<tAlphabetType>> mRanges;
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bool mExclude = false;
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};
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struct ParseError {
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const char* description = nullptr;
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uhalni offset = 0;
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[[nodiscard]] bool isError() const { return description != nullptr; }
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};
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template <typename tAlphabetType, typename tStateType, tStateType tNoStateVal>
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class Parser {
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enum TokType : uint1 {
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TOK_COMPOUND_START = 0,
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TOK_COMPOUND_END,
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TOK_CLASS_START,
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TOK_CLASS_END,
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TOK_CLASS_START_EXCLUDE,
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TOK_CLASS_END_EXCLUDE,
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TOK_OR,
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TOK_IF,
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TOK_ANY,
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TOK_REPEAT,
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TOK_REPEAT_PLUS,
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TOK_HYPHEN,
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TOK_SPECIALS_END_,
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TOK_VAL,
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TOK_NONE,
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};
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tAlphabetType SpecialSymbols[TOK_SPECIALS_END_] = {
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'(', ')', '[', ']', '{', '}', '|', '?', '.', '*', '+', '-',
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};
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tAlphabetType mEscapeSymbol = '\\';
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struct Token {
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TokType type;
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tAlphabetType val;
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};
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const tAlphabetType* mSource = nullptr;
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uhalni mOffset = 0;
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Token mCurToken;
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uhalni mTokLength = 0;
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public:
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ParseError mError;
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// regular expression must be a zero termination string
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AstCompound* parse(const tAlphabetType* regex) {
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mSource = regex;
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return parseRegEx();
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}
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private:
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AstCompound* parseRegEx() {
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auto out = new AstCompound();
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for (AstNode* node = parseElement(); node; node = parseElement()) {
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out->mChilds.pushBack(node);
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}
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if (!out->mChilds.length()) {
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genError("Expected A Expression");
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}
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if (mError.description) {
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delete out;
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return nullptr;
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}
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return out;
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}
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AstNode* parseElement() {
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AstNode* out = nullptr;
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switch (readTok().type) {
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case TOK_COMPOUND_START: out = parseCompound(); break;
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case TOK_CLASS_START: out = parseClass(); break;
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case TOK_CLASS_START_EXCLUDE: out = parseClass(true); break;
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case TOK_ANY: out = parseAny(); break;
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case TOK_VAL: out = parseVal(); break;
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case TOK_NONE:
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{
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discardTok();
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return nullptr;
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};
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default: break;
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}
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if (!out) {
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discardTok();
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return nullptr;
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}
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switch (readTok().type) {
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case TOK_OR: out = parseAlternation(out); break;
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case TOK_REPEAT: out = parseRepetition(out); break;
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case TOK_REPEAT_PLUS: out = parseRepetition(out, true); break;
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case TOK_IF: out = parseIf(out); break;
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case TOK_NONE: break;
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default:
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{
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discardTok();
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}
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}
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return out;
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}
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AstCompound* parseCompound() {
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auto out = new AstCompound();
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for (AstNode* node = parseElement(); node; node = parseElement()) {
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out->mChilds.pushBack(node);
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}
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if (readTok().type != TOK_COMPOUND_END) {
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genError("Expected Compound End");
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}
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if (mError.description) {
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delete out;
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return nullptr;
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}
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return out;
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}
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AstClass<tAlphabetType>* parseClass(bool exclude = false) {
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auto out = new AstClass<tAlphabetType>();
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out->mExclude = exclude;
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auto& ranges = out->mRanges;
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readTok();
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READ_VAL:
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if (mCurToken.type != TOK_VAL) {
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delete out;
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genError("Expected A Value");
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return nullptr;
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}
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char range_start = mCurToken.val;
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readTok();
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if (mCurToken.type != TOK_HYPHEN) {
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delete out;
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genError("Expected A Range");
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return nullptr;
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}
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readTok();
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if (mCurToken.type != TOK_VAL) {
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delete out;
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genError("Expected A Value");
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return nullptr;
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}
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char range_end = mCurToken.val;
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ranges.pushBack({ range_start, range_end });
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readTok();
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if ((mCurToken.type == TOK_CLASS_END && !exclude) || (mCurToken.type == TOK_CLASS_END_EXCLUDE && exclude)) {
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return out;
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} else {
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goto READ_VAL;
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}
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}
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AstAny* parseAny() { return new AstAny(); }
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AstVal<tAlphabetType>* parseVal() {
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auto out = new AstVal<tAlphabetType>(mCurToken.val);
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return out;
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}
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AstAlternation* parseAlternation(AstNode* left) {
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auto right = parseElement();
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if (!right) {
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genError("Expected Alternation right Side");
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delete left;
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return nullptr;
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}
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auto out = new AstAlternation();
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out->mFirst = left;
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out->mSecond = right;
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return out;
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}
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AstRepetition* parseRepetition(AstNode* left, bool plus = false) {
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auto out = new AstRepetition();
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out->mNode = left;
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out->mPlus = plus;
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return out;
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}
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AstIf* parseIf(AstNode* left) {
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auto out = new AstIf();
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out->mNode = left;
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return out;
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}
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void genError(const char* desc) { mError = { desc, mOffset }; }
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Token& readTok() {
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const tAlphabetType* crs = mSource + mOffset;
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// zero termination string
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if (*crs == 0) {
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mCurToken.type = TOK_NONE;
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return mCurToken;
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}
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mTokLength = 1;
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mCurToken.type = TOK_VAL;
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mCurToken.val = crs[0];
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if (crs[0] == mEscapeSymbol) {
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mCurToken.val = crs[1];
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mTokLength = 2;
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} else {
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for (uhalni tok = 0; tok < TOK_SPECIALS_END_; tok++) {
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if (SpecialSymbols[tok] == mCurToken.val) {
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mCurToken.type = TokType(tok);
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break;
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}
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}
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}
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mOffset += mTokLength;
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return mCurToken;
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}
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void discardTok() {
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mOffset -= mTokLength;
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mTokLength = 0;
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}
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};
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template <typename tAlphabetType, typename tStateType, tStateType tNoStateVal, tStateType tFailedStateVal>
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CompileError<tStateType> compile(
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NFA<tAlphabetType, tStateType, tNoStateVal, tFailedStateVal>& out, const tAlphabetType* regex, tStateType state
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) {
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Compiler<tAlphabetType, tStateType, tNoStateVal, tFailedStateVal> compiler;
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compiler.compile(out, regex, state);
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return compiler.mError;
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}
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template <typename tAlphabetType, typename tStateType, tStateType tNoStateVal, tStateType tFailedStateVal>
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CompileError<tStateType> compile(
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NFA<tAlphabetType, tStateType, tNoStateVal, tFailedStateVal>& out,
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const InitialierList<Pair<const tAlphabetType*, tStateType>>& rules
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) {
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Compiler<tAlphabetType, tStateType, tNoStateVal, tFailedStateVal> compiler;
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compiler.compile(out, rules);
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return compiler.mError;
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}
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}
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