qssgrendershadertokenizer.cpp

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// Copyright (C) 2026 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
// Qt-Security score:significant reason:default
 
#include "qssgrendershadertokenizer_p.h"
 
QT_BEGIN_NAMESPACE
 
void QSSGShaderTokenizer::initialize(const char *input)
{
    stream = input;
    pos = input;
    identifier = input;
}
 
QSSGShaderTokenizer::Token QSSGShaderTokenizer::next()
{
    while (*pos) {
        char c = *pos++;
        switch (c) {
        case '/':
            if (*pos == '/') {
                // '//' comment
                ++pos;
                while (*pos && *pos != '\n') ++pos;
                return Token_Comment;
            } else if (*pos == '*') {
                // /* */ comment
                ++pos;
                while (*pos && (*pos != '*' || pos[1] != '/')) ++pos;
                if (*pos) pos += 2;
                return Token_Comment;
            }
            return Token_Unspecified;
 
        case ';': return Token_SemiColon;
        case '\0': return Token_EOF;
        case '{': return Token_OpenBrace;
        case '}': return Token_CloseBrace;
        case '(': return Token_OpenParen;
        case ')': return Token_CloseParen;
        case '[': return Token_OpenBraket;
        case ']': return Token_CloseBraket;
 
        case ' ':
        case '\n':
        case '\r': break;
        default:
            // Identifier...
            if ((c >= 'a' && c <= 'z' ) || (c >= 'A' && c <= 'Z' ) || c == '_') {
                identifier = pos - 1;
                while (*pos && ((*pos >= 'a' && *pos <= 'z')
                                     || (*pos >= 'A' && *pos <= 'Z')
                                     || *pos == '_'
                                     || (*pos >= '0' && *pos <= '9'))) {
                    ++pos;
                }
                return Token_Identifier;
            } else {
                return Token_Unspecified;
            }
        }
    }
 
    return Token_EOF;
}
 
QT_END_NAMESPACE