980 lines
27 KiB
C++
980 lines
27 KiB
C++
/***
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Copyright (C) 2021 J Reece Wilson (a/k/a "Reece"). All rights reserved.
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File: AuParser.cpp
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Date: 2021-6-12
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Author: Reece
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Note: Horrible gen 1 parser.
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I'm not removing or significantly improving this.
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Just build around what works, could probably wrangle a command list parser on top.
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***/
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#include <Source/RuntimeInternal.hpp>
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#include "AuParser.hpp"
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namespace Aurora::Parse
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{
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AUKN_SYM void VaildateStructure(const ParseObject &object)
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{
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}
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template<size_t Z>
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static AuFunction<bool(AuUInt8)> ContainedHerein(const AuUInt8(&arry)[Z])
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{
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return [=](AuUInt8 c) -> bool
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{
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for (int i = 0; i < Z; i++)
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{
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if (arry[i] == c)
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{
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return true;
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}
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}
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return false;
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};
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}
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template<size_t Z>
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static AuFunction<bool(AuUInt8)> IsTerminating(ParseState &state, const AuUInt8(&arry)[Z])
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{
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return [&](AuUInt8 c) -> bool
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{
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for (int i = 0; i < Z; i++)
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{
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if (arry[i] == c)
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{
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return true;
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}
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}
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for (int i = 0; i < state.countOfTokens; i++)
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{
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if (state.additionalTokens[i] == c)
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{
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state.lastTokenAdditional = i;
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return true;
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}
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}
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return false;
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};
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}
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// oh god just dont think about this tokenizer too much
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bool ConsumeStringifedToken(ParseState &state, ParsableTag type, AuString &out)
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{
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static unsigned char terminatingChars[] = { '\n', '\00' };
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static unsigned char whiteChars[] = { ' ' };
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static unsigned char illegalCharacters[] = { '\r' }; //reeedows
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auto isString = type == ParsableTag::kParseString;
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auto isvararg = type == ParsableTag::kParseStringVararg;
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bool stringLevel = false;
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bool escapedNewLine = false;
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bool escapeNextLegal = false;
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auto isTerminating = IsTerminating(state, terminatingChars);
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static auto isSpace = ContainedHerein(whiteChars);
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static auto isIgnore = ContainedHerein(illegalCharacters);
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while (true)
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{
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AuUInt8 cur;
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AuUInt8 peek;
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// consume character from the stream
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if (!state.stream->Next(cur))
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{
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break;
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}
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// some characters should be considered universally illegal such as nasty unicode spaces,
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// carriage returns, and any other nasty crash exploit dependee characters
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if (isIgnore(cur))
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{
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continue;
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}
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// Is end of line/end of string
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if (isTerminating(cur))
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{
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// Make sure we aren't encapsulated by quotation marks
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if ((!stringLevel) && (!AuExchange(escapedNewLine, false)))
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{
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state.hasLastToken = true;
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state.lastTokenCharacter = cur;
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break;
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}
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}
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// if the string starts with a quotation mark, set stringLevel to true
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// TODO: I dont remember the parse rules. Check the old tests. Should this be AuStartsWith?
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if ((cur == '"') && (isString) && (out.empty()))
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{
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stringLevel = true;
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continue;
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}
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auto peekStatus = state.stream->PeekNext(peek);
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bool isPeekterminating = isTerminating(peek);
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// prepare escape characters
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if ((peekStatus) && (cur == '\\'))
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{
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// check \ \n pair + is var arg
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if ((isPeekterminating) && (isvararg))
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{
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escapedNewLine = true;
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continue;
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}
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// escape character for "'s in strings
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if (isString && (peek == '\"' || peek == ' ' || peek == '\n' || peek == '\r'))
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{
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escapeNextLegal = true;
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continue;
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}
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}
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// see above
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if (AuExchange(escapeNextLegal, false))
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{
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out += cur;
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continue;
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}
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// match the ending '"' character in the token to terminate strings containing spaces
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// do not make this more ambiguous by removing the **else if**.
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if (
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(cur == '"') && (isString) && (stringLevel) //
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// can we expect to fail next iteration?
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&& (((peekStatus && (isPeekterminating || isSpace(peek)) /*Is ending character?*/) ||
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(!peekStatus)))) // Is EoS?
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{
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stringLevel = false;
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continue;
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}
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// if we hit a space in a string, assume we're at the end of the token, unless we're parsing
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// a string in quotation marks or are consuming the entire line (ParsableTag::kParseStringVararg)
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if ((isSpace(cur)) && (!stringLevel) && (!isvararg))
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{
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break;
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}
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// otherwise emit
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out += cur;
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}
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//SysAssert(!stringLevel, "Parsed tag of string type must end with \", got {}", out);
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if (stringLevel)
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{
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SysPushErrorSyntaxError("Parsed tag of string type must end with \", got {}", out);
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return false;
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}
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//AuLogDbg("returned {} {}", out, out.size() != 0);
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return out.size() != 0;
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}
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template<typename Func, typename Res>
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static bool ScrewExceptions_2(Func func, const AuString &in, Res &out)
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{
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try
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{
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out = func(in.c_str(), nullptr);
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return true;
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}
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catch (...)
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{
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return false;
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}
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}
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template <typename T> int SignBit(T val)
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{
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return (T(0) < val) - (val < T(0));
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}
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template <typename T, typename Iterator>
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bool ParseInt(Iterator begin, Iterator &end, T &out)
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{
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T res = 0;
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T sign = 1;
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out = 0;
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auto itr = begin;
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if constexpr (AuIsSame_v<T, AuSInt>)
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{
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if (itr != end)
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{
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if (*itr == '-')
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{
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itr++;
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sign = -1;
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}
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}
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}
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int perf {};
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for (;
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(itr != end) &&
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(*itr != '\0');
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itr++)
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{
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auto c = *itr;
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if ((c < '0') || (c > '9'))
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{
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return false;
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}
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auto old = res;
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res *= 10;
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res += static_cast<AuUInt>(*itr) - static_cast<AuUInt>('0');
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if ((perf++) >= 5)
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{
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if constexpr (AuIsSame_v<T, AuUInt>)
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{
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if (old > res)
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{
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SysPushErrorSyntaxError("Unsigned integer overflow: {}", AuString(begin, end));
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end = itr;
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return false;
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}
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}
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else if constexpr (AuIsSame_v<T, AuSInt>)
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{
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if (SignBit(old) != SignBit(res))
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{
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SysPushErrorSyntaxError("Signed integer overflow: {}", AuString(begin, end));
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end = itr;
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return false;
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}
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}
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}
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}
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end = itr;
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out = res * sign;
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return true;
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}
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template <typename T, typename Iterator>
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bool ParseInt16(Iterator begin, Iterator &end, T &out)
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{
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T res = 0;
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T sign = 1;
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out = 0;
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auto itr = begin;
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if constexpr (AuIsSame_v<T, AuSInt>)
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{
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if (itr != end)
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{
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if (*itr == '-')
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{
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itr++;
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sign = -1;
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}
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}
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}
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if (itr != end)
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{
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if ((*itr == '0') && (itr[1] == 'x')) // TODO (Reece): EVIL... but it's only a byte
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{
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itr++;
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itr++;
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}
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}
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if (begin != end)
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{
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auto endChar = *(end - 1);
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if (endChar == 'h' || endChar == 'H')
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{
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end--;
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}
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}
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int perf {};
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for (;
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(itr != end) &&
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(*itr != '\0');
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itr++)
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{
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auto c = *itr;
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int delta {};
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if ((c >= 'A') && (c <= 'F'))
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{
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delta = 10 + (c - 'A');
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}
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else if ((c >= 'a') && (c <= 'f'))
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{
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delta = 10 + (c - 'a');
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}
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else if ((c >= '0') && (c <= '9'))
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{
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delta = c - '0';
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}
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else
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{
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return false;
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}
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auto old = res;
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res *= T(16);
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res += T(delta);
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if ((perf++) >= 5)
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{
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if constexpr (AuIsSame_v<T, AuUInt>)
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{
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if (old > res)
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{
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SysPushErrorSyntaxError("Unsigned integer overflow: {}", AuString(begin, end));
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end = itr;
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return false;
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}
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}
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else if constexpr (AuIsSame_v<T, AuSInt>)
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{
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if (SignBit(old) != SignBit(res))
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{
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SysPushErrorSyntaxError("Signed integer overflow: {}", AuString(begin, end));
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end = itr;
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return false;
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}
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}
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}
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}
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end = itr;
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out = res * sign;
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return true;
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}
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static bool ConsumeTokenPrimitiveish(ParseState &state, ParsableTag type, ParseValue &out)
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{
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AuString str;
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if (!ConsumeStringifedToken(state, type, str))
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{
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return false;
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}
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if ((type != ParsableTag::kParseString) && (str.empty()))
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{
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return false;
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}
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AuOptional<uuids::uuid> uuid;
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auto end = str.end();
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switch (type)
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{
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case ParsableTag::kParseUInt:
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{
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return ParseInt<AuUInt64>(str.begin(), end, out.primitive.uint) && end == str.end();
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}
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case ParsableTag::kParseSInt:
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{
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return ParseInt<AuInt64>(str.begin(), end, out.primitive.sint) && end == str.end();
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}
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case ParsableTag::kParseNumber:
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{
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return ScrewExceptions_2(static_cast<double(&)(const std::string &, std::size_t *)>(std::stod), str, out.primitive.number);
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}
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case ParsableTag::kParseString:
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case ParsableTag::kParseStringVararg:
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{
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out.string = AuMove(str);
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break;
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}
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case ParsableTag::kParseUUID:
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{
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if (auto uuid2 = uuids::uuid::from_string(str))
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{
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uuid = *uuid2;
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}
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if (!uuid.has_value())
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{
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SysPushErrorSyntaxError("Parse Error: invalid UUID {}", str);
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return false;
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}
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out.UUID = uuid.value();
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break;
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}
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case ParsableTag::kParseBoolean:
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{
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if ((str == "0") ||
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(stricmp(str.c_str(), "false") == 0) ||
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(stricmp(str.c_str(), "no") == 0))
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{
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out.primitive.boolean = false;
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}
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else if ((str == "1") ||
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(stricmp(str.c_str(), "true") == 0) ||
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(stricmp(str.c_str(), "yes") == 0))
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{
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out.primitive.boolean = true;
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}
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else
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{
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SysPushErrorSyntaxError("Parsed tag of boolean type wasn't parsable given the English string {}", str);
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return false;
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}
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break;
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}
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default:
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SysPanic("Invalid consume tag {}", AuUInt(type));
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}
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return true;
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}
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AUKN_SYM bool ConsumeToken(ParseState &state, ParsableTag type, ParseValue &out)
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{
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ParseValue temp;
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#define ADD_VECTOR_VAL(idx, memberType) \
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if (!ConsumeTokenPrimitiveish(state, ParsableTag::kParseNumber, temp)) \
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return false; \
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out.primitive.memberType[idx] = temp.primitive.number;
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switch (type)
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{
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case ParsableTag::kParseVec3:
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{
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ADD_VECTOR_VAL(0, vec3);
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ADD_VECTOR_VAL(1, vec3);
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ADD_VECTOR_VAL(2, vec3);
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return true;
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}
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case ParsableTag::kParseVec4:
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{
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ADD_VECTOR_VAL(0, vec4);
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ADD_VECTOR_VAL(1, vec4);
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ADD_VECTOR_VAL(2, vec4);
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ADD_VECTOR_VAL(3, vec4);
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return true;
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}
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default:
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{
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return ConsumeTokenPrimitiveish(state, type, out);
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}
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}
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#undef ADD_VECTOR_VAL
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}
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AUKN_SYM bool ConsumeToken(ParsableTag type, const AuSPtr<Aurora::IO::Character::ICharacterProvider> &getc, ParseValue &out)
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{
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ParseState state(getc);
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return ConsumeToken(state, type, out);
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}
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AUKN_SYM bool ConsumeToken(ParsableTag type, const AuSPtr<Aurora::IO::Character::IBufferedCharacterConsumer> &getc, ParseValue &out)
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{
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ParseState state(getc);
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return ConsumeToken(state, type, out);
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}
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AUKN_SYM AuList<AuParse::ParseValueEx> ConsumeTokens(ParsableTag type, const AuSPtr<Aurora::IO::Character::IBufferedCharacterConsumer> &getc)
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{
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AuList<AuParse::ParseValueEx> ret;
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AuParse::ParseValueEx res;
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AuParse::ParseState state(getc);
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while (AuParse::ConsumeToken(state, type, res))
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{
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ret.push_back(res);
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}
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return ret;
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}
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AUKN_SYM AuList<AuParse::ParseValueEx> ConsumeTokens(ParsableTag type, const AuSPtr<Aurora::IO::Character::ICharacterProvider> &getc)
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{
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AuList<AuParse::ParseValueEx> ret;
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AuParse::ParseValueEx res;
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AuParse::ParseState state(getc);
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while (AuParse::ConsumeToken(state, type, res))
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{
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ret.push_back(res);
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}
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return ret;
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}
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AUKN_SYM bool Parse(ParseState &state, const ParseObject &structure, ParseResult &result)
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{
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for (auto &parseBit : structure)
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{
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ParsedBit parsed = {};
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bool ok;
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parsed.tag = parseBit.tag;
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AuMach arrayLength = 1;
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if (parseBit.array)
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{
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ParseValue arrayLengthBit = {};
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if (!ConsumeToken(state, ParsableTag::kParseUInt, arrayLengthBit))
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{
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SysPushErrorSyntaxError("Couldn't consume array length, label: {}, tag {}", parseBit.label, (AuUInt)parseBit.tag);
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return false;
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}
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arrayLength = arrayLengthBit.primitive.uint;
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}
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parsed.count = 0;
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for (int i = 0; ((i < arrayLength) || (parseBit.vararg)); i++)
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{
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ParseValueEx parsedSingle = {};
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ParseResult nestedresult = {};
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switch (parseBit.tag)
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{
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case ParsableTag::kParseUInt:
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case ParsableTag::kParseSInt:
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case ParsableTag::kParseString:
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case ParsableTag::kParseStringVararg:
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case ParsableTag::kParseNumber:
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case ParsableTag::kParseBoolean:
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case ParsableTag::kParseUUID:
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case ParsableTag::kParseVec3:
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case ParsableTag::kParseVec4:
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{
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ok = ConsumeToken(state, parseBit.tag, parsedSingle);
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break;
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}
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case ParsableTag::kParseObject:
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{
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// TODO: Although this should never result in a stack overflow, i'd rather return a request to prase than recursively call the same function
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// Bah
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ok = Parse(state, parseBit.objectParse, nestedresult);
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// TODO: debug info
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parsedSingle.object = nestedresult.result;
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break;
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}
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default:
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SysPanic("Invalid consume tag {} for {}", (AuUInt)parseBit.tag, parseBit.label);
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}
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if (!ok)
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{
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if ((parseBit.optional) || (parseBit.vararg))
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{
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break;
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}
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SysPushErrorSyntaxError("Syntax error around: label: {}, tag {}", parseBit.label, (AuUInt)parseBit.tag);
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return false;
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}
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if (parseBit.vararg || parseBit.array)
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{
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parsed.count++;
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if (!AuTryInsert(parsed.value.array, parsedSingle))
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{
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SysPushErrorMem();
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return false;
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}
|
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parsed.isArray = true;
|
|
}
|
|
else
|
|
{
|
|
parsed.isArray = false;
|
|
parsed.count = 1;
|
|
parsed.value.single = parsedSingle;
|
|
}
|
|
}
|
|
|
|
// do not add if an optional bit was not serialized
|
|
if (parsed.count != 0)
|
|
{
|
|
result.result.push_back(parsed);
|
|
}
|
|
}
|
|
|
|
result.syntaxError = "No-Debug";
|
|
result.debugTree = "No-Debug";
|
|
return true;
|
|
}
|
|
|
|
|
|
AUKN_SYM void SerializeToken(ParsableTag type, const ParseValue &value, AuString &str)
|
|
{
|
|
AuString temp = value.string;
|
|
switch (type)
|
|
{
|
|
case ParsableTag::kParseUInt:
|
|
{
|
|
str += AuToString(value.primitive.uint);
|
|
break;
|
|
}
|
|
case ParsableTag::kParseSInt:
|
|
{
|
|
str += AuToString(value.primitive.sint);
|
|
break;
|
|
}
|
|
case ParsableTag::kParseNumber:
|
|
{
|
|
str += AuToString(value.primitive.number);
|
|
break;
|
|
}
|
|
case ParsableTag::kParseVec3:
|
|
{
|
|
str += AuToString(value.primitive.vec3[0]) + " ";
|
|
str += AuToString(value.primitive.vec3[1]) + " ";
|
|
str += AuToString(value.primitive.vec3[2]);
|
|
break;
|
|
}
|
|
case ParsableTag::kParseVec4:
|
|
{
|
|
str += AuToString(value.primitive.vec4[0]) + " ";
|
|
str += AuToString(value.primitive.vec4[1]) + " ";
|
|
str += AuToString(value.primitive.vec4[2]) + " ";
|
|
str += AuToString(value.primitive.vec4[3]);
|
|
break;
|
|
}
|
|
case ParsableTag::kParseString:
|
|
{
|
|
AuReplaceAll(temp, "\\", "\\\\");
|
|
AuReplaceAll(temp, "\"", "\\\"");
|
|
str += "\"" + temp + "\"";
|
|
break;
|
|
}
|
|
case ParsableTag::kParseStringVararg:
|
|
{
|
|
AuReplaceAll(temp, "\n", "\\\n");
|
|
str += temp;
|
|
break;
|
|
}
|
|
case ParsableTag::kParseUUID:
|
|
{
|
|
str += uuids::to_string(value.UUID);
|
|
break;
|
|
}
|
|
case ParsableTag::kParseBoolean:
|
|
{
|
|
if (value.primitive.boolean)
|
|
{
|
|
str += "true";
|
|
}
|
|
else
|
|
{
|
|
str += "false";
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
SysPanic("Invalid consume tag {}", (AuUInt)type);
|
|
}
|
|
}
|
|
|
|
AUKN_SYM void Serialize(const ParsedObject &structure, AuString &ret)
|
|
{
|
|
for (auto &parsed : structure)
|
|
{
|
|
if (parsed.isArray)
|
|
{
|
|
if (ret.size())
|
|
{
|
|
ret += " ";
|
|
}
|
|
ret += AuToString(parsed.count);
|
|
}
|
|
|
|
bool isArray = parsed.count > 1 || parsed.isArray;
|
|
|
|
for (int i = 0; ((i < parsed.count)); i++)
|
|
{
|
|
if (ret.size())
|
|
{
|
|
ret += " ";
|
|
}
|
|
|
|
ParseValueEx parsedSingle = {};
|
|
ParseResult nestedresult = {};
|
|
switch (parsed.tag)
|
|
{
|
|
case ParsableTag::kParseUInt:
|
|
case ParsableTag::kParseSInt:
|
|
case ParsableTag::kParseString:
|
|
case ParsableTag::kParseStringVararg:
|
|
case ParsableTag::kParseNumber:
|
|
case ParsableTag::kParseBoolean:
|
|
case ParsableTag::kParseUUID:
|
|
case ParsableTag::kParseVec3:
|
|
case ParsableTag::kParseVec4:
|
|
{
|
|
SerializeToken(parsed.tag, !isArray ? parsed.value.single : parsed.value.array[i], ret);
|
|
break;
|
|
}
|
|
case ParsableTag::kParseObject:
|
|
{
|
|
Serialize(!isArray ? parsed.value.single.object : parsed.value.array[i].object, ret);
|
|
parsedSingle.object = nestedresult.result;
|
|
break;
|
|
}
|
|
default:
|
|
SysPanic("Invalid emit tag {}", (AuUInt)parsed.tag);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
AUKN_SYM AuResult<AuUInt> ParseUInt(const char *begin, const char *&end)
|
|
{
|
|
AuUInt temp{};
|
|
|
|
if (!ParseInt<AuUInt>(begin, end, temp))
|
|
{
|
|
return {};
|
|
}
|
|
|
|
return temp;
|
|
}
|
|
|
|
AUKN_SYM AuResult<AuSInt> ParseSInt(const char *begin, const char *&end)
|
|
{
|
|
AuSInt temp{};
|
|
|
|
if (!ParseInt<AuSInt>(begin, end, temp))
|
|
{
|
|
return {};
|
|
}
|
|
|
|
return temp;
|
|
}
|
|
|
|
AUKN_SYM AuResult<AuUInt> ParseUInt16(const char *begin, const char *&end)
|
|
{
|
|
AuUInt temp{};
|
|
|
|
if (!ParseInt16<AuUInt>(begin, end, temp))
|
|
{
|
|
return {};
|
|
}
|
|
|
|
return temp;
|
|
}
|
|
|
|
AUKN_SYM AuResult<AuSInt> ParseSInt16(const char *begin, const char *&end)
|
|
{
|
|
AuSInt temp{};
|
|
|
|
if (!ParseInt16<AuSInt>(begin, end, temp))
|
|
{
|
|
return {};
|
|
}
|
|
|
|
return temp;
|
|
}
|
|
|
|
AUKN_SYM AuString StringifySInt16(AuInt64 in, bool bZeroX)
|
|
{
|
|
if (bZeroX)
|
|
{
|
|
auto str = AuString(fmt::format("{0:#X}", in));
|
|
if (str.size() > 2)
|
|
{
|
|
if (str[1] == 'X')
|
|
{
|
|
str[1] = 'x';
|
|
}
|
|
else if (str.size() > 3 && str[2] == 'X')
|
|
{
|
|
str[2] = 'x';
|
|
}
|
|
}
|
|
return str;
|
|
}
|
|
else
|
|
{
|
|
return AuString(fmt::format("{:X}", in));
|
|
}
|
|
}
|
|
|
|
AUKN_SYM AuString StringifyUInt16(AuUInt64 in, bool bZeroX)
|
|
{
|
|
if (bZeroX)
|
|
{
|
|
auto str = AuString(fmt::format("{0:#X}", in));
|
|
if (str.size() > 2)
|
|
{
|
|
if (str[1] == 'X')
|
|
{
|
|
str[1] = 'x';
|
|
}
|
|
else if (str.size() > 3 && str[2] == 'X')
|
|
{
|
|
str[2] = 'x';
|
|
}
|
|
}
|
|
return str;
|
|
}
|
|
else
|
|
{
|
|
return AuString(fmt::format("{:X}", in));
|
|
}
|
|
}
|
|
|
|
AUKN_SYM AuResult<AuSInt> ParseSInt16(const char *begin)
|
|
{
|
|
const auto end = begin + ::strlen(begin);
|
|
const char *didntFuckingAskTYVM {end };
|
|
|
|
auto res = ParseSInt16(begin, didntFuckingAskTYVM);
|
|
if (!res.has_value())
|
|
{
|
|
return {};
|
|
}
|
|
|
|
if (didntFuckingAskTYVM != end)
|
|
{
|
|
return {};
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
AUKN_SYM AuResult<AuSInt> ParseSInt16(const AuROString &str)
|
|
{
|
|
const char *didntFuckingAskTYVM { &str[str.size()] };
|
|
|
|
auto res = ParseSInt16(str.data(), didntFuckingAskTYVM);
|
|
if (!res.has_value())
|
|
{
|
|
return {};
|
|
}
|
|
|
|
if (didntFuckingAskTYVM != &str[str.size()])
|
|
{
|
|
return {};
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
AUKN_SYM AuResult<AuUInt> ParseUInt16(const char *begin)
|
|
{
|
|
const auto end = begin + ::strlen(begin);
|
|
const char *didntFuckingAskTYVM { end };
|
|
|
|
auto res = ParseUInt16(begin, didntFuckingAskTYVM);
|
|
if (!res.has_value())
|
|
{
|
|
return {};
|
|
}
|
|
|
|
if (didntFuckingAskTYVM != end)
|
|
{
|
|
return {};
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
AUKN_SYM AuResult<AuUInt> ParseUInt16(const AuROString &str)
|
|
{
|
|
const char *didntFuckingAskTYVM { &str[str.size()] };
|
|
|
|
auto res = ParseUInt16(str.data(), didntFuckingAskTYVM);
|
|
if (!res.has_value())
|
|
{
|
|
return {};
|
|
}
|
|
|
|
if (didntFuckingAskTYVM != &str[str.size()])
|
|
{
|
|
return {};
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
AUKN_SYM AuResult<AuSInt> ParseSInt(const AuROString &str)
|
|
{
|
|
const char *didntFuckingAskTYVM { &str[str.size()] };
|
|
|
|
auto res = ParseSInt(str.data(), didntFuckingAskTYVM);
|
|
if (!res.has_value())
|
|
{
|
|
return {};
|
|
}
|
|
|
|
if (didntFuckingAskTYVM != &str[str.size()])
|
|
{
|
|
return {};
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
AUKN_SYM AuResult<AuSInt> ParseSInt(const char *begin)
|
|
{
|
|
const auto end = begin + ::strlen(begin);
|
|
const char *didntFuckingAskTYVM { end };
|
|
|
|
auto res = ParseSInt(begin, didntFuckingAskTYVM);
|
|
if (!res.has_value())
|
|
{
|
|
return {};
|
|
}
|
|
|
|
if (didntFuckingAskTYVM != end)
|
|
{
|
|
return {};
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
AUKN_SYM AuResult<AuUInt> ParseUInt(const AuROString &str)
|
|
{
|
|
const char *didntFuckingAskTYVM { &str[str.size()] };
|
|
|
|
auto res = ParseUInt(str.data(), didntFuckingAskTYVM);
|
|
if (!res.has_value())
|
|
{
|
|
return {};
|
|
}
|
|
|
|
if (didntFuckingAskTYVM != &str[str.size()])
|
|
{
|
|
return {};
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
AUKN_SYM AuResult<AuUInt> ParseUInt(const char *begin)
|
|
{
|
|
const auto end = begin + ::strlen(begin);
|
|
const char *didntFuckingAskTYVM { end };
|
|
|
|
auto res = ParseUInt(begin, didntFuckingAskTYVM);
|
|
if (!res.has_value())
|
|
{
|
|
return {};
|
|
}
|
|
|
|
if (didntFuckingAskTYVM != end)
|
|
{
|
|
return {};
|
|
}
|
|
|
|
return res;
|
|
}
|
|
} |