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Added attributes syntax to pattern language

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This comes with two experimental attributes for variables called `name` and `color`
This commit is contained in:
WerWolv 2021-01-21 17:49:30 +01:00
parent 3e3a5273c0
commit ff566aa51f
5 changed files with 165 additions and 46 deletions
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121
plugins/libimhex/include/hex/lang/ast_node.hpp
View File

@ -9,6 +9,26 @@
namespace hex::lang {
class ASTNodeAttribute;
class Attributable {
protected:
Attributable() = default;
Attributable(const Attributable&) = default;
public:
void addAttribute(ASTNodeAttribute *attribute) {
this->m_attributes.push_back(attribute);
}
[[nodiscard]] const auto& getAttributes() const {
return this->m_attributes;
}
private:
std::vector<ASTNodeAttribute*> m_attributes;
};
class ASTNode {
public:
constexpr ASTNode() = default;
@ -16,9 +36,9 @@ namespace hex::lang {
constexpr ASTNode(const ASTNode &) = default;
[[nodiscard]] constexpr u32 getLineNumber() const { return this->m_lineNumber; }
constexpr void setLineNumber(u32 lineNumber) { this->m_lineNumber = lineNumber; }
[[maybe_unused]] constexpr void setLineNumber(u32 lineNumber) { this->m_lineNumber = lineNumber; }
virtual ASTNode* clone() const = 0;
[[nodiscard]] virtual ASTNode* clone() const = 0;
private:
u32 m_lineNumber = 1;
@ -26,11 +46,11 @@ namespace hex::lang {
class ASTNodeIntegerLiteral : public ASTNode {
public:
ASTNodeIntegerLiteral(Token::IntegerLiteral literal) : ASTNode(), m_literal(literal) { }
explicit ASTNodeIntegerLiteral(Token::IntegerLiteral literal) : ASTNode(), m_literal(std::move(literal)) { }
ASTNodeIntegerLiteral(const ASTNodeIntegerLiteral&) = default;
ASTNode* clone() const override {
[[nodiscard]] ASTNode* clone() const override {
return new ASTNodeIntegerLiteral(*this);
}
@ -62,7 +82,7 @@ namespace hex::lang {
this->m_right = other.m_right->clone();
}
ASTNode* clone() const override {
[[nodiscard]] ASTNode* clone() const override {
return new ASTNodeNumericExpression(*this);
}
@ -93,7 +113,7 @@ namespace hex::lang {
this->m_third = other.m_third->clone();
}
ASTNode* clone() const override {
[[nodiscard]] ASTNode* clone() const override {
return new ASTNodeTernaryExpression(*this);
}
@ -114,7 +134,7 @@ namespace hex::lang {
[[nodiscard]] constexpr const auto& getType() const { return this->m_type; }
ASTNode* clone() const override {
[[nodiscard]] ASTNode* clone() const override {
return new ASTNodeBuiltinType(*this);
}
@ -122,12 +142,12 @@ namespace hex::lang {
const Token::ValueType m_type;
};
class ASTNodeTypeDecl : public ASTNode {
class ASTNodeTypeDecl : public ASTNode, public Attributable {
public:
ASTNodeTypeDecl(std::string_view name, ASTNode *type, std::optional<std::endian> endian = { })
: ASTNode(), m_name(name), m_type(type), m_endian(endian) { }
ASTNodeTypeDecl(const ASTNodeTypeDecl& other) : ASTNode(other) {
ASTNodeTypeDecl(const ASTNodeTypeDecl& other) : ASTNode(other), Attributable(other) {
this->m_name = other.m_name;
this->m_type = other.m_type->clone();
this->m_endian = other.m_endian;
@ -137,7 +157,7 @@ namespace hex::lang {
delete this->m_type;
}
ASTNode* clone() const override {
[[nodiscard]] ASTNode* clone() const override {
return new ASTNodeTypeDecl(*this);
}
@ -151,12 +171,12 @@ namespace hex::lang {
std::optional<std::endian> m_endian;
};
class ASTNodeVariableDecl : public ASTNode {
class ASTNodeVariableDecl : public ASTNode, public Attributable {
public:
ASTNodeVariableDecl(std::string_view name, ASTNode *type, ASTNode *placementOffset = nullptr)
: ASTNode(), m_name(name), m_type(type), m_placementOffset(placementOffset) { }
ASTNodeVariableDecl(const ASTNodeVariableDecl &other) : ASTNode(other) {
ASTNodeVariableDecl(const ASTNodeVariableDecl &other) : ASTNode(other), Attributable(other) {
this->m_name = other.m_name;
this->m_type = other.m_type->clone();
@ -170,7 +190,7 @@ namespace hex::lang {
delete this->m_type;
}
ASTNode* clone() const override {
[[nodiscard]] ASTNode* clone() const override {
return new ASTNodeVariableDecl(*this);
}
@ -184,12 +204,12 @@ namespace hex::lang {
ASTNode *m_placementOffset;
};
class ASTNodeArrayVariableDecl : public ASTNode {
class ASTNodeArrayVariableDecl : public ASTNode, public Attributable {
public:
ASTNodeArrayVariableDecl(std::string_view name, ASTNode *type, ASTNode *size, ASTNode *placementOffset = nullptr)
: ASTNode(), m_name(name), m_type(type), m_size(size), m_placementOffset(placementOffset) { }
ASTNodeArrayVariableDecl(const ASTNodeArrayVariableDecl &other) : ASTNode(other) {
ASTNodeArrayVariableDecl(const ASTNodeArrayVariableDecl &other) : ASTNode(other), Attributable(other) {
this->m_name = other.m_name;
this->m_type = other.m_type->clone();
if (other.m_size != nullptr)
@ -208,7 +228,7 @@ namespace hex::lang {
delete this->m_size;
}
ASTNode* clone() const override {
[[nodiscard]] ASTNode* clone() const override {
return new ASTNodeArrayVariableDecl(*this);
}
@ -224,12 +244,12 @@ namespace hex::lang {
ASTNode *m_placementOffset;
};
class ASTNodePointerVariableDecl : public ASTNode {
class ASTNodePointerVariableDecl : public ASTNode, public Attributable {
public:
ASTNodePointerVariableDecl(std::string_view name, ASTNode *type, ASTNode *sizeType, ASTNode *placementOffset = nullptr)
: ASTNode(), m_name(name), m_type(type), m_sizeType(sizeType), m_placementOffset(placementOffset) { }
ASTNodePointerVariableDecl(const ASTNodePointerVariableDecl &other) : ASTNode(other) {
ASTNodePointerVariableDecl(const ASTNodePointerVariableDecl &other) : ASTNode(other), Attributable(other) {
this->m_name = other.m_name;
this->m_type = other.m_type->clone();
this->m_sizeType = other.m_sizeType->clone();
@ -244,7 +264,7 @@ namespace hex::lang {
delete this->m_type;
}
ASTNode* clone() const override {
[[nodiscard]] ASTNode* clone() const override {
return new ASTNodePointerVariableDecl(*this);
}
@ -260,11 +280,11 @@ namespace hex::lang {
ASTNode *m_placementOffset;
};
class ASTNodeStruct : public ASTNode {
class ASTNodeStruct : public ASTNode, public Attributable {
public:
ASTNodeStruct() : ASTNode() { }
ASTNodeStruct(const ASTNodeStruct &other) : ASTNode(other) {
ASTNodeStruct(const ASTNodeStruct &other) : ASTNode(other), Attributable(other) {
for (const auto &otherMember : other.getMembers())
this->m_members.push_back(otherMember->clone());
}
@ -274,7 +294,7 @@ namespace hex::lang {
delete member;
}
ASTNode* clone() const override {
[[nodiscard]] ASTNode* clone() const override {
return new ASTNodeStruct(*this);
}
@ -285,11 +305,11 @@ namespace hex::lang {
std::vector<ASTNode*> m_members;
};
class ASTNodeUnion : public ASTNode {
class ASTNodeUnion : public ASTNode, public Attributable {
public:
ASTNodeUnion() : ASTNode() { }
ASTNodeUnion(const ASTNodeUnion &other) : ASTNode(other) {
ASTNodeUnion(const ASTNodeUnion &other) : ASTNode(other), Attributable(other) {
for (const auto &otherMember : other.getMembers())
this->m_members.push_back(otherMember->clone());
}
@ -299,7 +319,7 @@ namespace hex::lang {
delete member;
}
ASTNode* clone() const override {
[[nodiscard]] ASTNode* clone() const override {
return new ASTNodeUnion(*this);
}
@ -310,11 +330,11 @@ namespace hex::lang {
std::vector<ASTNode*> m_members;
};
class ASTNodeEnum : public ASTNode {
class ASTNodeEnum : public ASTNode, public Attributable {
public:
explicit ASTNodeEnum(ASTNode *underlyingType) : ASTNode(), m_underlyingType(underlyingType) { }
ASTNodeEnum(const ASTNodeEnum &other) : ASTNode(other) {
ASTNodeEnum(const ASTNodeEnum &other) : ASTNode(other), Attributable(other) {
for (const auto &[name, entry] : other.getEntries())
this->m_entries.insert({ name, entry->clone() });
this->m_underlyingType = other.m_underlyingType->clone();
@ -326,7 +346,7 @@ namespace hex::lang {
delete this->m_underlyingType;
}
ASTNode* clone() const override {
[[nodiscard]] ASTNode* clone() const override {
return new ASTNodeEnum(*this);
}
@ -340,11 +360,11 @@ namespace hex::lang {
ASTNode *m_underlyingType;
};
class ASTNodeBitfield : public ASTNode {
class ASTNodeBitfield : public ASTNode, public Attributable {
public:
ASTNodeBitfield() : ASTNode() { }
ASTNodeBitfield(const ASTNodeBitfield &other) : ASTNode(other) {
ASTNodeBitfield(const ASTNodeBitfield &other) : ASTNode(other), Attributable(other) {
for (const auto &[name, entry] : other.getEntries())
this->m_entries.emplace_back(name, entry->clone());
}
@ -354,7 +374,7 @@ namespace hex::lang {
delete expr;
}
ASTNode* clone() const override {
[[nodiscard]] ASTNode* clone() const override {
return new ASTNodeBitfield(*this);
}
@ -371,7 +391,7 @@ namespace hex::lang {
ASTNodeRValue(const ASTNodeRValue&) = default;
ASTNode* clone() const override {
[[nodiscard]] ASTNode* clone() const override {
return new ASTNodeRValue(*this);
}
@ -389,7 +409,7 @@ namespace hex::lang {
ASTNodeScopeResolution(const ASTNodeScopeResolution&) = default;
ASTNode* clone() const override {
[[nodiscard]] ASTNode* clone() const override {
return new ASTNodeScopeResolution(*this);
}
@ -424,7 +444,7 @@ namespace hex::lang {
this->m_falseBody.push_back(statement->clone());
}
ASTNode* clone() const override {
[[nodiscard]] ASTNode* clone() const override {
return new ASTNodeConditionalStatement(*this);
}
@ -462,7 +482,7 @@ namespace hex::lang {
this->m_params.push_back(param->clone());
}
ASTNode* clone() const override {
[[nodiscard]] ASTNode* clone() const override {
return new ASTNodeFunctionCall(*this);
}
@ -483,13 +503,13 @@ namespace hex::lang {
public:
explicit ASTNodeStringLiteral(std::string_view string) : ASTNode(), m_string(string) { }
~ASTNodeStringLiteral() override { }
~ASTNodeStringLiteral() override = default;
ASTNodeStringLiteral(const ASTNodeStringLiteral &other) : ASTNode(other) {
this->m_string = other.m_string;
}
ASTNode* clone() const override {
[[nodiscard]] ASTNode* clone() const override {
return new ASTNodeStringLiteral(*this);
}
@ -501,5 +521,32 @@ namespace hex::lang {
std::string m_string;
};
class ASTNodeAttribute : public ASTNode {
public:
explicit ASTNodeAttribute(std::string_view attribute, std::string_view value = { })
: ASTNode(), m_attribute(attribute), m_value(value) { }
~ASTNodeAttribute() override = default;
ASTNodeAttribute(const ASTNodeAttribute &other) : ASTNode(other) {
this->m_attribute = other.m_attribute;
this->m_value = other.m_value;
}
[[nodiscard]] ASTNode* clone() const override {
return new ASTNodeAttribute(*this);
}
[[nodiscard]] std::string_view getAttribute() const {
return this->m_attribute;
}
[[nodiscard]] std::string_view getValue() const {
return this->m_value;
}
private:
std::string m_attribute, m_value;
};
}

5
plugins/libimhex/include/hex/lang/evaluator.hpp
View File

@ -37,7 +37,7 @@ namespace hex::lang {
}
}
[[noreturn]] static void abortEvaluation(std::string_view message) {
[[noreturn]] void abortEvaluation(std::string_view message) {
throw EvaluateError(message);
}
@ -51,7 +51,7 @@ namespace hex::lang {
std::optional<std::vector<PatternData*>> evaluate(const std::vector<ASTNode*>& ast);
auto& getConsole() { return this->m_console; }
LogConsole& getConsole() { return this->m_console; }
private:
std::map<std::string, ASTNode*> m_types;
@ -76,6 +76,7 @@ namespace hex::lang {
ASTNodeIntegerLiteral* evaluateMathematicalExpression(ASTNodeNumericExpression *node);
PatternData* patternFromName(const std::vector<std::string> &name);
PatternData* evaluateAttributes(ASTNode *currNode, PatternData *currPattern);
PatternData* evaluateBuiltinType(ASTNodeBuiltinType *node);
void evaluateMember(ASTNode *node, std::vector<PatternData*> &currMembers, bool increaseOffset);
PatternData* evaluateStruct(ASTNodeStruct *node);

1
plugins/libimhex/include/hex/lang/parser.hpp
View File

@ -71,6 +71,7 @@ namespace hex::lang {
ASTNode* parseTernaryConditional();
ASTNode* parseMathematicalExpression();
void parseAttribute(Attributable *currNode);
ASTNode* parseConditional();
ASTNode* parseType(s32 startIndex);
ASTNode* parseUsingDeclaration();

55
plugins/libimhex/source/lang/evaluator.cpp
View File

@ -331,6 +331,47 @@ namespace hex::lang {
return evaluateOperator(leftInteger, rightInteger, node->getOperator());
}
PatternData* Evaluator::evaluateAttributes(ASTNode *currNode, PatternData *currPattern) {
auto attributableNode = dynamic_cast<Attributable*>(currNode);
if (attributableNode == nullptr)
this->getConsole().abortEvaluation("attributes applied to invalid expression");
auto handleVariableAttributes = [this, &currPattern](auto attribute, auto value) {
if (attribute == "color")
currPattern->setColor(strtoul(value.data(), nullptr, 0));
else if (attribute == "name")
currPattern->setVariableName(value.data());
else
this->getConsole().abortEvaluation("unknown or invalid attribute");
};
auto &attributes = attributableNode->getAttributes();
if (auto variableDeclNode = dynamic_cast<ASTNodeVariableDecl*>(currNode); variableDeclNode != nullptr) {
for (auto &attribute : attributes)
handleVariableAttributes(attribute->getAttribute(), attribute->getValue());
} else if (auto arrayDeclNode = dynamic_cast<ASTNodeArrayVariableDecl*>(currNode); arrayDeclNode != nullptr) {
for (auto &attribute : attributes)
handleVariableAttributes(attribute->getAttribute(), attribute->getValue());
} else if (auto pointerDeclNode = dynamic_cast<ASTNodePointerVariableDecl*>(currNode); pointerDeclNode != nullptr) {
for (auto &attribute : attributes)
handleVariableAttributes(attribute->getAttribute(), attribute->getValue());
} else if (auto structNode = dynamic_cast<ASTNodeStruct*>(currNode); structNode != nullptr) {
this->getConsole().abortEvaluation("unknown or invalid attribute");
} else if (auto unionNode = dynamic_cast<ASTNodeUnion*>(currNode); unionNode != nullptr) {
this->getConsole().abortEvaluation("unknown or invalid attribute");
} else if (auto enumNode = dynamic_cast<ASTNodeEnum*>(currNode); enumNode != nullptr) {
this->getConsole().abortEvaluation("unknown or invalid attribute");
} else if (auto bitfieldNode = dynamic_cast<ASTNodeBitfield*>(currNode); bitfieldNode != nullptr) {
this->getConsole().abortEvaluation("unknown or invalid attribute");
} else
this->getConsole().abortEvaluation("attributes applied to invalid expression");
return currPattern;
}
PatternData* Evaluator::evaluateBuiltinType(ASTNodeBuiltinType *node) {
auto &type = node->getType();
auto typeSize = Token::getTypeSize(type);
@ -400,7 +441,7 @@ namespace hex::lang {
this->evaluateMember(member, memberPatterns, true);
}
return new PatternDataStruct(startOffset, this->m_currOffset - startOffset, memberPatterns);
return this->evaluateAttributes(node, new PatternDataStruct(startOffset, this->m_currOffset - startOffset, memberPatterns));
}
PatternData* Evaluator::evaluateUnion(ASTNodeUnion *node) {
@ -421,7 +462,7 @@ namespace hex::lang {
this->m_currOffset += size;
return new PatternDataUnion(startOffset, size, memberPatterns);
return this->evaluateAttributes(node, new PatternDataUnion(startOffset, size, memberPatterns));
}
PatternData* Evaluator::evaluateEnum(ASTNodeEnum *node) {
@ -451,7 +492,7 @@ namespace hex::lang {
this->m_currOffset += size;
return new PatternDataEnum(startOffset, size, entryPatterns);;
return this->evaluateAttributes(node, new PatternDataEnum(startOffset, size, entryPatterns));
}
PatternData* Evaluator::evaluateBitfield(ASTNodeBitfield *node) {
@ -484,7 +525,7 @@ namespace hex::lang {
size_t size = (bits + 7) / 8;
this->m_currOffset += size;
return new PatternDataBitfield(startOffset, size, entryPatterns);
return this->evaluateAttributes(node, new PatternDataBitfield(startOffset, size, entryPatterns));
}
PatternData* Evaluator::evaluateType(ASTNodeTypeDecl *node) {
@ -544,7 +585,7 @@ namespace hex::lang {
pattern->setVariableName(node->getName().data());
return pattern;
return this->evaluateAttributes(node, pattern);
}
PatternData* Evaluator::evaluateArray(ASTNodeArrayVariableDecl *node) {
@ -637,7 +678,7 @@ namespace hex::lang {
pattern->setVariableName(node->getName().data());
return pattern;
return this->evaluateAttributes(node, pattern);
}
PatternData* Evaluator::evaluatePointer(ASTNodePointerVariableDecl *node) {
@ -694,7 +735,7 @@ namespace hex::lang {
pattern->setVariableName(node->getName().data());
pattern->setEndian(this->getCurrentEndian());
return pattern;
return this->evaluateAttributes(node, pattern);
}
std::optional<std::vector<PatternData*>> Evaluator::evaluate(const std::vector<ASTNode *> &ast) {

29
plugins/libimhex/source/lang/parser.cpp
View File

@ -262,6 +262,29 @@ namespace hex::lang {
return this->parseTernaryConditional();
}
// [[ <Identifier[( (parseStringLiteral) )], ...> ]]
void Parser::parseAttribute(Attributable *currNode) {
if (currNode == nullptr)
throwParseError("tried to apply attribute to invalid statement");
do {
if (!MATCHES(sequence(IDENTIFIER)))
throwParseError("expected attribute expression");
auto attribute = this->getValue<std::string>(-1);
if (MATCHES(sequence(SEPARATOR_ROUNDBRACKETOPEN, STRING, SEPARATOR_ROUNDBRACKETCLOSE))) {
auto value = this->getValue<std::string>(-2);
currNode->addAttribute(new ASTNodeAttribute(attribute, value));
}
else
currNode->addAttribute(new ASTNodeAttribute(attribute));
} while (MATCHES(sequence(SEPARATOR_COMMA)));
if (!MATCHES(sequence(SEPARATOR_SQUAREBRACKETCLOSE, SEPARATOR_SQUAREBRACKETCLOSE)))
throwParseError("unfinished attribute. Expected ']]'");
}
/* Control flow */
@ -410,6 +433,9 @@ namespace hex::lang {
else
throwParseError("invalid struct member", 0);
if (MATCHES(sequence(SEPARATOR_SQUAREBRACKETOPEN, SEPARATOR_SQUAREBRACKETOPEN)))
parseAttribute(dynamic_cast<Attributable *>(member));
if (!MATCHES(sequence(SEPARATOR_ENDOFEXPRESSION)))
throwParseError("missing ';' at end of expression", -1);
@ -605,6 +631,9 @@ namespace hex::lang {
statement = parseFunctionCall();
else throwParseError("invalid sequence", 0);
if (MATCHES(sequence(SEPARATOR_SQUAREBRACKETOPEN, SEPARATOR_SQUAREBRACKETOPEN)))
parseAttribute(dynamic_cast<Attributable *>(statement));
if (!MATCHES(sequence(SEPARATOR_ENDOFEXPRESSION)))
throwParseError("missing ';' at end of expression", -1);