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mirror of synced 2024-11-14 19:17:42 +01:00
Code Releases Wiki Activity

patterns: Added global variables

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This commit is contained in:
WerWolv 2021-10-18 22:04:54 +02:00
parent 93474d7f43
commit 929437c159
2 changed files with 43 additions and 9 deletions
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32
plugins/libimhex/source/pattern_language/evaluator.cpp
View File

@ -49,6 +49,7 @@ namespace hex::pl {
void Evaluator::setVariable(const std::string &name, const Token::Literal& value) {
PatternData *pattern = nullptr;
{
auto &variables = *this->getScope(0).scope;
for (auto &variable : variables) {
if (variable->getVariableName() == name) {
@ -56,6 +57,20 @@ namespace hex::pl {
break;
}
}
}
if (pattern == nullptr) {
auto &variables = *this->getGlobalScope().scope;
for (auto &variable : variables) {
if (variable->getVariableName() == name) {
if (!variable->isLocal())
LogConsole::abortEvaluation(hex::format("cannot modify global variable '{}' which has been placed in memory", name));
pattern = variable;
break;
}
}
}
if (pattern == nullptr)
LogConsole::abortEvaluation(hex::format("no variable with name '{}' found", name));
@ -127,6 +142,18 @@ namespace hex::pl {
delete node->evaluate(this);
} else if (dynamic_cast<ASTNodeFunctionDefinition*>(node)) {
this->m_customFunctionDefinitions.push_back(node->evaluate(this));
} else if (auto varDeclNode = dynamic_cast<ASTNodeVariableDecl*>(node)) {
auto pattern = node->createPatterns(this).front();
if (varDeclNode->getPlacementOffset() == nullptr) {
auto type = varDeclNode->getType()->evaluate(this);
ON_SCOPE_EXIT { delete type; };
this->createVariable(pattern->getVariableName(), type);
delete pattern;
} else {
patterns.push_back(pattern);
}
} else {
auto newPatterns = node->createPatterns(this);
patterns.insert(patterns.end(), newPatterns.begin(), newPatterns.end());
@ -164,6 +191,11 @@ namespace hex::pl {
return std::nullopt;
}
// Remove global local variables
std::erase_if(patterns, [](PatternData *pattern) {
return pattern->isLocal();
});
return patterns;
}

10
plugins/libimhex/source/pattern_language/parser.cpp
View File

@ -1009,10 +1009,12 @@ namespace hex::pl {
ASTNode* Parser::parseVariablePlacement(ASTNodeTypeDecl *type) {
auto name = getValue<Token::Identifier>(-1).get();
if (!MATCHES(sequence(OPERATOR_AT)))
throwParseError("expected placement instruction", -1);
auto placementOffset = parseMathematicalExpression();
ASTNode *placementOffset;
if (MATCHES(sequence(OPERATOR_AT))) {
placementOffset = parseMathematicalExpression();
} else {
placementOffset = nullptr;
}
return create(new ASTNodeVariableDecl(name, type, placementOffset));
}