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authorjsmall-nvidia <jsmall@nvidia.com>2022-06-08 19:51:49 -0400
committerGitHub <noreply@github.com>2022-06-08 19:51:49 -0400
commit4db6bd3cd6da1871fdac520c280bd9f933e48489 (patch)
treee4e1bf347a1ceac708ce598af7d4ca4bab71e013 /build/visual-studio/slang
parent1146920bc9ed9bef2b5bb91b3cdec4700eb09881 (diff)
Improved bounds checking for C++/CUDA (#2263)
* #include an absolute path didn't work - because paths were taken to always be relative. * Use TerminatedUnownedStringSlice for literals in output C++. * Remove Escape/Unescape functions used in slang-token-reader.cpp Add target type of 'host-cpp' etc to map to the target types. * Fix some corner cases around string encoding. * Added unit test for string escaping. Fixed some assorted escaping bugs. * Updated test output. * Added decode test. * Stop using hex output, to get around 'greedy' aspect. Use octal instead. * Added HostHostCallable Small changes to use ArtifactDesc/Info instead of large switches. * Fix C++ emit to handle arbitrary function export. * Add options handling for callable without an output being specified. * Can compile with COM interface. Added example using com interface. * Use the IR Ptr type instead of hack in C++ emit for interfaces. * Fix issue with outputting the COM call when ptr is used. * Fix crash issue on compilation failure. * Add support for __global. * Added `ActualGlobalRate` Added special handling around globals and COM interfaces. Tested out in cpu-com-example. * Fix typo in NodeBase. * Support for accessing globals by name working. * Bounds checking for C++ Improved bounds checks for CUDA. * Check that actual global initialization is working. * Fix typo. * Refactor the com replacement such that it doesn't need a cache or do anything special with GlobalVar. * Fix typo in CUDA prelude. * Remove context. Only create replacement if needed. * Split out COM host-callable into a unit-test. * host-callable com testing on C++and llvm. * Comment around the COM ptr replacement. * WIP Zero bound test. * Disable com test on vs 32 bit. Fix C++ prelude * Disable 32 bit targets testing com host-callable. * For now disable zero index test. * Enable bounds checking for CPU/CUDA. * Small fixes. Disable CUDA zero index bound fix. * Add test result for bound check. * Work around for index wrapping issue. * Added Fixed array test. * Only enable prelude asserts via SLANG_PRELUDE_ENABLE_ASSERT (unless defined by the user)
Diffstat (limited to 'build/visual-studio/slang')
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generated by cgit v1.2.3 (git 2.39.1) at 2026-09-07 19:47:04 +0000
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#include "slang-token-reader.h"

namespace Slang
{
    enum class TokenizeErrorType
    {
        InvalidCharacter, InvalidEscapeSequence
    };

    enum class State
    {
        Start, Identifier, Operator, Int, Hex, Fixed, Double, Char, String, MultiComment, SingleComment
    };

    enum class LexDerivative
    {
        None, Line, File
    };

    inline bool IsLetter(char ch)
    {
        return ((ch >= 'a' && ch <= 'z') ||
            (ch >= 'A' && ch <= 'Z') || ch == '_');
    }

    inline bool IsDigit(char ch)
    {
        return ch >= '0' && ch <= '9';
    }

    inline bool IsPunctuation(char ch)
    {
        return  ch == '+' || ch == '-' || ch == '*' || ch == '/' || ch == '%' ||
            ch == '!' || ch == '^' || ch == '&' || ch == '(' || ch == ')' ||
            ch == '=' || ch == '{' || ch == '}' || ch == '[' || ch == ']' ||
            ch == '|' || ch == ';' || ch == ',' || ch == '.' || ch == '<' ||
            ch == '>' || ch == '~' || ch == '@' || ch == ':' || ch == '?' || ch == '#';
    }

    inline bool IsWhiteSpace(char ch)
    {
        return (ch == ' ' || ch == '\t' || ch == '\n' || ch == '\r' || ch == '\v');
    }

    void ParseOperators(const String & str, List<Token> & tokens, TokenFlags& tokenFlags, int line, int col, int startPos, String fileName)
    {
        Index pos = 0;
        while (pos < str.getLength())
        {
            wchar_t curChar = str[pos];
            wchar_t nextChar = (pos < str.getLength() - 1) ? str[pos + 1] : '\0';
            wchar_t nextNextChar = (pos < str.getLength() - 2) ? str[pos + 2] : '\0';
            auto InsertToken = [&](TokenType type, const String & ct)
            {
                tokens.add(Token(type, ct, line, int(col + pos), int(pos + startPos), fileName, tokenFlags));
                tokenFlags = 0;
            };
            switch (curChar)
            {
            case '+':
                if (nextChar == '+')
                {
                    InsertToken(TokenType::OpInc, "++");
                    pos += 2;
                }
                else if (nextChar == '=')
                {
                    InsertToken(TokenType::OpAddAssign, "+=");
                    pos += 2;
                }
                else
                {
                    InsertToken(TokenType::OpAdd, "+");
                    pos++;
                }
                break;
            case '-':
                if (nextChar == '-')
                {
                    InsertToken(TokenType::OpDec, "--");
                    pos += 2;
                }
                else if (nextChar == '=')
                {
                    InsertToken(TokenType::OpSubAssign, "-=");
                    pos += 2;
                }
                else if (nextChar == '>')
                {
                    InsertToken(TokenType::RightArrow, "->");
                    pos += 2;
                }
                else
                {
                    InsertToken(TokenType::OpSub, "-");
                    pos++;
                }
                break;
            case '*':
                if (nextChar == '=')
                {
                    InsertToken(TokenType::OpMulAssign, "*=");
                    pos += 2;
                }
                else
                {
                    InsertToken(TokenType::OpMul, "*");
                    pos++;
                }
                break;
            case '/':
                if (nextChar == '=')
                {
                    InsertToken(TokenType::OpDivAssign, "/=");
                    pos += 2;
                }
                else
                {
                    InsertToken(TokenType::OpDiv, "/");
                    pos++;
                }
                break;
            case '%':
                if (nextChar == '=')
                {
                    InsertToken(TokenType::OpModAssign, "%=");
                    pos += 2;
                }
                else
                {
                    InsertToken(TokenType::OpMod, "%");
                    pos++;
                }
                break;
            case '|':
                if (nextChar == '|')
                {
                    InsertToken(TokenType::OpOr, "||");
                    pos += 2;
                }
                else if (nextChar == '=')
                {
                    InsertToken(TokenType::OpOrAssign, "|=");
                    pos += 2;
                }
                else
                {
                    InsertToken(TokenType::OpBitOr, "|");
                    pos++;
                }
                break;
            case '&':
                if (nextChar == '&')
                {
                    InsertToken(TokenType::OpAnd, "&&");
                    pos += 2;
                }
                else if (nextChar == '=')
                {
                    InsertToken(TokenType::OpAndAssign, "&=");
                    pos += 2;
                }
                else
                {
                    InsertToken(TokenType::OpBitAnd, "&");
                    pos++;
                }
                break;
            case '^':
                if (nextChar == '=')
                {
                    InsertToken(TokenType::OpXorAssign, "^=");
                    pos += 2;
                }
                else
                {
                    InsertToken(TokenType::OpBitXor, "^");
                    pos++;
                }
                break;
            case '>':
                if (nextChar == '>')
                {
                    if (nextNextChar == '=')
                    {
                        InsertToken(TokenType::OpShrAssign, ">>=");
                        pos += 3;
                    }
                    else
                    {
                        InsertToken(TokenType::OpRsh, ">>");
                        pos += 2;
                    }
                }
                else if (nextChar == '=')
                {
                    InsertToken(TokenType::OpGeq, ">=");
                    pos += 2;
                }
                else
                {
                    InsertToken(TokenType::OpGreater, ">");
                    pos++;
                }
                break;
            case '<':
                if (nextChar == '<')
                {
                    if (nextNextChar == '=')
                    {
                        InsertToken(TokenType::OpShlAssign, "<<=");
                        pos += 3;
                    }
                    else
                    {
                        InsertToken(TokenType::OpLsh, "<<");
                        pos += 2;
                    }
                }
                else if (nextChar == '=')
                {
                    InsertToken(TokenType::OpLeq, "<=");
                    pos += 2;
                }
                else
                {
                    InsertToken(TokenType::OpLess, "<");
                    pos++;
                }
                break;
            case '=':
                if (nextChar == '=')
                {
                    InsertToken(TokenType::OpEql, "==");
                    pos += 2;
                }
                else
                {
                    InsertToken(TokenType::OpAssign, "=");
                    pos++;
                }
                break;
            case '!':
                if (nextChar == '=')
                {
                    InsertToken(TokenType::OpNeq, "!=");
                    pos += 2;
                }
                else
                {
                    InsertToken(TokenType::OpNot, "!");
                    pos++;
                }
                break;
            case '?':
                InsertToken(TokenType::QuestionMark, "?");
                pos++;
                break;
            case '@':
                InsertToken(TokenType::At, "@");
                pos++;
                break;
            case '#':
                if (nextChar == '#')
                {
                    InsertToken(TokenType::PoundPound, "##");
                    pos += 2;
                }
                else
                {
                    InsertToken(TokenType::Pound, "#");
                    pos++;
                }
                pos++;
                break;
            case ':':
                InsertToken(TokenType::Colon, ":");
                pos++;
                break;
            case '~':
                InsertToken(TokenType::OpBitNot, "~");
                pos++;
                break;
            case ';':
                InsertToken(TokenType::Semicolon, ";");
                pos++;
                break;
            case ',':
                InsertToken(TokenType::Comma, ",");
                pos++;
                break;
            case '.':
                InsertToken(TokenType::Dot, ".");
                pos++;
                break;
            case '{':
                InsertToken(TokenType::LBrace, "{");
                pos++;
                break;
            case '}':
                InsertToken(TokenType::RBrace, "}");
                pos++;
                break;
            case '[':
                InsertToken(TokenType::LBracket, "[");
                pos++;
                break;
            case ']':
                InsertToken(TokenType::RBracket, "]");
                pos++;
                break;
            case '(':
                InsertToken(TokenType::LParent, "(");
                pos++;
                break;
            case ')':
                InsertToken(TokenType::RParent, ")");
                pos++;
                break;
            }
        }
    }

    List<Token> TokenizeText(const String & fileName, const String & text)
    {