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GlslEditor: Robustify version detection

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Change-Id: I91a702ecec151f8331139b21d9a1b8c0939e6e4f
Reviewed-by: David Schulz <david.schulz@qt.io>
This commit is contained in:
Christian Stenger
2020-07-20 16:58:52 +02:00
parent 7cd9699766
commit bf00fd93a2
1 changed files with 51 additions and 9 deletions
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60
src/plugins/glsleditor/glsleditor.cpp
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@@ -43,6 +43,8 @@
#include <coreplugin/editormanager/editormanager.h>
#include <coreplugin/icore.h>
#include <cplusplus/SimpleLexer.h>
#include <extensionsystem/pluginmanager.h>
#include <extensionsystem/pluginspec.h>
@@ -73,6 +75,51 @@ using namespace GLSL;
namespace GlslEditor {
namespace Internal {
static int versionFor(const QString &source)
{
CPlusPlus::SimpleLexer lexer;
lexer.setPreprocessorMode(false);
const CPlusPlus::Tokens tokens = lexer(source);
int version = -1;
// QString profile;
const int end = tokens.size();
for (int it = 0; it + 2 < end; ++it) {
const CPlusPlus::Token &token = tokens.at(it);
if (token.isComment())
continue;
if (token.kind() == CPlusPlus::T_POUND) {
const int line = token.lineno;
const CPlusPlus::Token &successor = tokens.at(it + 1);
if (line != successor.lineno)
break;
if (successor.kind() != CPlusPlus::T_IDENTIFIER)
break;
if (source.mid(successor.bytesBegin(), successor.bytes()) != "version")
break;
const CPlusPlus::Token &versionToken = tokens.at(it + 2);
if (line != versionToken.lineno)
break;
if (versionToken.kind() != CPlusPlus::T_NUMERIC_LITERAL)
break;
version = source.mid(versionToken.bytesBegin(), versionToken.bytes()).toInt();
// if (version >= 150 && it + 3 < end) {
// const CPlusPlus::Token &profileToken = tokens.at(it + 3);
// if (line != profileToken.lineno)
// break;
// if (profileToken.kind() != CPlusPlus::T_IDENTIFIER)
// break;
// profile = source.mid(profileToken.bytesBegin(), profileToken.bytes());
// }
break;
}
break;
}
return version;
}
enum {
UPDATE_DOCUMENT_DEFAULT_INTERVAL = 150
};
@@ -193,18 +240,13 @@ void GlslEditorWidget::updateDocumentNow()
{
m_updateDocumentTimer.stop();
static const QRegularExpression versionRegex("^#version\\s+(\\d{3})\\s+(.*)?$",
QRegularExpression::MultilineOption);
int variant = languageVariant(textDocument()->mimeType());
const QString contents = toPlainText(); // get the code from the editor
const QByteArray preprocessedCode = contents.toLatin1(); // ### use the QtCreator C++ preprocessor.
int version = versionFor(contents);
if (version >= 330)
variant |= GLSL::Lexer::Variant_GLSL_400;
QRegularExpressionMatch match = versionRegex.match(contents);
if (match.hasMatch()) {
const int version = match.captured(1).toInt();
if (version >= 330)
variant |= GLSL::Lexer::Variant_GLSL_400;
}
const QByteArray preprocessedCode = contents.toLatin1(); // ### use the QtCreator C++ preprocessor.
Document::Ptr doc(new Document());
doc->_engine = new Engine();