mirror of
https://github.com/JakeHillion/object-introspection.git
synced 2024-09-19 19:19:05 +01:00
d009f02ecb
Types within containers were previously named TODO. This sorts it out so they're named as their most resolved type. The current implementation skips Typedef names.
446 lines
14 KiB
C++
446 lines
14 KiB
C++
#include "TypeGraphParser.h"
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#include <string>
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#include "oi/type_graph/TypeGraph.h"
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namespace {
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/*
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* Sets line to the contents of the current line.
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* Advances input to the beginning of the next line.
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*/
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bool getline(std::string_view& input, std::string_view& line) {
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auto nextline = input.find('\n');
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if (nextline == input.npos) {
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return false;
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}
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line = input.substr(0, nextline);
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input = input.substr(nextline + 1);
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return true;
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}
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Primitive::Kind getKind(std::string_view kindStr) {
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if (kindStr == "int8_t")
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return Primitive::Kind::Int8;
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if (kindStr == "int16_t")
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return Primitive::Kind::Int16;
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if (kindStr == "int32_t")
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return Primitive::Kind::Int32;
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if (kindStr == "int64_t")
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return Primitive::Kind::Int64;
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if (kindStr == "uint8_t")
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return Primitive::Kind::UInt8;
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if (kindStr == "uint16_t")
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return Primitive::Kind::UInt16;
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if (kindStr == "uint32_t")
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return Primitive::Kind::UInt32;
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if (kindStr == "uint64_t")
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return Primitive::Kind::UInt64;
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if (kindStr == "float")
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return Primitive::Kind::Float32;
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if (kindStr == "double")
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return Primitive::Kind::Float64;
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if (kindStr == "long double")
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return Primitive::Kind::Float128;
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if (kindStr == "bool")
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return Primitive::Kind::Bool;
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if (kindStr == "uintptr_t")
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return Primitive::Kind::UIntPtr;
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if (kindStr == "void")
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return Primitive::Kind::Void;
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if (kindStr == "void (incomplete)")
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return Primitive::Kind::Incomplete;
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throw TypeGraphParserError{"Invalid Primitive::Kind: " +
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std::string{kindStr}};
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}
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ContainerInfo& getContainerInfo(std::string_view name) {
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if (name == "std::vector") {
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static ContainerInfo info{"std::vector", SEQ_TYPE, "vector"};
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info.stubTemplateParams = {1};
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return info;
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}
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if (name == "std::map") {
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static ContainerInfo info{"std::map", STD_MAP_TYPE, "utility"};
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info.stubTemplateParams = {2, 3};
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return info;
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}
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if (name == "std::pair") {
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static ContainerInfo info{"std::pair", SEQ_TYPE, "utility"};
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return info;
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}
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if (name == "std::allocator") {
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static ContainerInfo info{"std::allocator", DUMMY_TYPE, "memory"};
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return info;
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}
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throw TypeGraphParserError{"Unsupported container: " + std::string{name}};
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}
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Qualifier getQualifier(std::string_view line) {
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if (line == "const") {
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return Qualifier::Const;
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}
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throw TypeGraphParserError{"Unsupported qualifier: " + std::string{line}};
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}
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size_t stripIndent(std::string_view& line) {
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auto indent = line.find_first_not_of(" ");
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line.remove_prefix(indent);
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return indent;
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}
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bool tryRemovePrefix(std::string_view& line, std::string_view prefix) {
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if (!line.starts_with(prefix))
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return false;
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line.remove_prefix(prefix.size());
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return true;
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}
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void removePrefix(std::string_view& line, std::string_view prefix) {
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if (!tryRemovePrefix(line, prefix))
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throw TypeGraphParserError{"Unexpected line prefix. Expected '" +
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std::string{prefix} + "'. Got '" +
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std::string{line} + "'."};
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}
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std::optional<double> tryParseNumericAttribute(std::string_view line,
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std::string_view marker) {
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auto attrStartPos = line.find(marker);
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if (attrStartPos == line.npos)
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return {};
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auto valStartPos = attrStartPos + marker.size();
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auto valEndPos = line.find_first_not_of("0123456789.", valStartPos);
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auto valStr = line.substr(valStartPos, valEndPos);
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double val = std::stod(std::string{valStr}); // Makes a string copy :'(
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return val;
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}
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double parseNumericAttribute(std::string_view line,
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std::string_view type,
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std::string_view marker) {
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auto val = tryParseNumericAttribute(line, marker);
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if (!val)
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throw TypeGraphParserError{
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std::string{type} + " must have a numeric attribute: '" +
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std::string{marker} + "'. Got: '" + std::string{line} + "'"};
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return *val;
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}
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std::optional<std::string_view> tryParseStringValue(std::string_view& input,
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std::string_view marker,
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size_t rootIndent) {
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std::string_view modifiedInput = input;
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std::string_view line;
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getline(modifiedInput, line);
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size_t indent = stripIndent(line);
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if (indent != rootIndent)
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return {};
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if (!tryRemovePrefix(line, marker))
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return {};
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auto val = line;
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// Update input to point to after the value we have read
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input = modifiedInput;
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return val;
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}
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std::optional<std::string_view> tryParseInputName(std::string_view input) {
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auto left = input.find_first_of('[');
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auto right = input.find_last_of(']');
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if (left == std::string_view::npos || right == std::string_view::npos)
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return {};
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return input.substr(left + 1, right - left - 1);
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}
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NodeId getId(std::string_view str, size_t* idLen = nullptr) {
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if (idLen)
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*idLen = 0;
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if (str[0] != '[')
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return -1;
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auto closeBracket = str.find(']');
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if (closeBracket == str.npos)
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return -1;
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auto idStr = str.substr(1, closeBracket);
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NodeId id = std::stoi(std::string{idStr}); // Makes a string copy :'(
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if (idLen)
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*idLen = closeBracket + 2; // +2 for the trailing "] "
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return id;
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}
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} // namespace
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void TypeGraphParser::parse(std::string_view input) {
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size_t rootIndent = input.find_first_not_of("[]0123456789 ");
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while (!input.empty()) {
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Type& type = parseType(input, rootIndent);
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typeGraph_.addRoot(type);
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}
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}
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Type& TypeGraphParser::parseType(std::string_view& input, size_t rootIndent) {
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std::string_view line;
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getline(input, line);
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size_t idLen = 0;
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NodeId id = getId(line, &idLen);
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line.remove_prefix(idLen);
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size_t indent = stripIndent(line) + idLen;
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if (indent != rootIndent)
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throw TypeGraphParserError{"Unexpected indent for line: " +
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std::string{line}};
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auto nodeEndPos = line.find_first_of(": \n");
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auto nodeTypeName = line.substr(0, nodeEndPos);
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Type* type = nullptr;
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if (NodeId refId = getId(nodeTypeName); refId != -1) {
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auto it = nodesById_.find(refId);
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if (it == nodesById_.end())
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throw TypeGraphParserError{"Node ID referenced before definition: " +
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std::to_string(refId)};
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type = &it->second.get();
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} else if (nodeTypeName == "Class" || nodeTypeName == "Struct" ||
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nodeTypeName == "Union") {
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// Format: "Class: MyClass (size: 12)"
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Class::Kind kind;
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if (nodeTypeName == "Class")
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kind = Class::Kind::Class;
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else if (nodeTypeName == "Struct")
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kind = Class::Kind::Struct;
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else if (nodeTypeName == "Union")
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kind = Class::Kind::Union;
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else
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abort();
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// Extract name
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auto nameStartPos = line.find(' ') + 1;
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auto nameEndPos = line.find('(', nameStartPos + 1);
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auto name = line.substr(nameStartPos, nameEndPos - nameStartPos - 1);
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auto size = parseNumericAttribute(line, nodeTypeName, "size: ");
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auto align = tryParseNumericAttribute(line, "align: ");
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Class& c = typeGraph_.makeType<Class>(id, kind, std::string{name}, size);
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if (align)
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c.setAlign(static_cast<uint64_t>(*align));
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nodesById_.insert({id, c});
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parseParams(c, input, indent + 2);
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parseParents(c, input, indent + 2);
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parseMembers(c, input, indent + 2);
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parseFunctions(c, input, indent + 2);
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parseChildren(c, input, indent + 2);
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type = &c;
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} else if (nodeTypeName == "Container") {
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// Format: "Container: std::vector (size: 24)
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// Extract container type name
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auto nameStartPos = line.find(' ') + 1;
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auto nameEndPos = line.find('(', nameStartPos + 1);
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auto name = line.substr(nameStartPos, nameEndPos - nameStartPos - 1);
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auto& info = getContainerInfo(name);
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auto size = parseNumericAttribute(line, nodeTypeName, "size: ");
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Container& c = typeGraph_.makeType<Container>(id, info, size);
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nodesById_.insert({id, c});
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parseParams(c, input, indent + 2);
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type = &c;
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} else if (nodeTypeName == "Primitive") {
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// Format: "Primitive: int32_t"
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removePrefix(line, "Primitive: ");
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auto kind = getKind(line);
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type = &typeGraph_.makeType<Primitive>(kind);
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} else if (nodeTypeName == "Enum") {
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// Format: "Enum: MyEnum (size: 4)"
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removePrefix(line, "Enum: ");
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auto nameEndPos = line.find(' ');
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auto name = line.substr(0, nameEndPos);
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auto size = parseNumericAttribute(line, nodeTypeName, "size: ");
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type = &typeGraph_.makeType<Enum>(std::string{name}, size);
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} else if (nodeTypeName == "Array") {
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// Format: "Array: (length: 5)
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auto len = parseNumericAttribute(line, nodeTypeName, "length: ");
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auto& elementType = parseType(input, indent + 2);
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type = &typeGraph_.makeType<Array>(id, elementType, len);
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} else if (nodeTypeName == "Typedef") {
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// Format: "Typedef: myTypedef"
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removePrefix(line, "Typedef: ");
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auto name = line;
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auto& underlyingType = parseType(input, indent + 2);
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type = &typeGraph_.makeType<Typedef>(id, std::string{name}, underlyingType);
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nodesById_.insert({id, *type});
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} else if (nodeTypeName == "Pointer") {
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// Format: "Pointer"
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auto& pointeeType = parseType(input, indent + 2);
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type = &typeGraph_.makeType<Pointer>(id, pointeeType);
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nodesById_.insert({id, *type});
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} else if (nodeTypeName == "Dummy") {
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// Format: "Dummy (size: 4)"
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auto size = parseNumericAttribute(line, nodeTypeName, "size: ");
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std::string inputName{*tryParseInputName(line)};
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type = &typeGraph_.makeType<Dummy>(id, size, 0, inputName);
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} else if (nodeTypeName == "DummyAllocator") {
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// Format: "DummyAllocator (size: 8)"
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auto size = parseNumericAttribute(line, nodeTypeName, "size: ");
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std::string inputName{*tryParseInputName(line)};
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auto& typeToAlloc = parseType(input, indent + 2);
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type = &typeGraph_.makeType<DummyAllocator>(id, typeToAlloc, size, 0,
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inputName);
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} else {
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throw TypeGraphParserError{"Unsupported node type: " +
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std::string{nodeTypeName}};
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}
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return *type;
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}
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template <typename T>
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void TypeGraphParser::parseParams(T& c,
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std::string_view& input,
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size_t rootIndent) {
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std::string_view origInput = input;
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for (std::string_view line; getline(input, line); origInput = input) {
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size_t indent = stripIndent(line);
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if (indent != rootIndent)
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break;
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// Format: "Param"
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if (!tryRemovePrefix(line, "Param"))
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break;
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auto value = tryParseStringValue(input, "Value: ", rootIndent + 2);
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Type& type = parseType(input, rootIndent + 2);
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TemplateParam param{type};
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if (value)
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param.value = value;
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if (auto qualStr =
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tryParseStringValue(input, "Qualifiers: ", rootIndent + 2);
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qualStr) {
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Qualifier qual = getQualifier(*qualStr);
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param.qualifiers[qual] = true;
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}
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c.templateParams.push_back(param);
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}
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// No more params for us - put back the line we just read
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input = origInput;
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}
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void TypeGraphParser::parseParents(Class& c,
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std::string_view& input,
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size_t rootIndent) {
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std::string_view origInput = input;
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for (std::string_view line; getline(input, line); origInput = input) {
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size_t indent = stripIndent(line);
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if (indent != rootIndent)
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break;
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// Format: "Parent (offset: 0)"
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if (!tryRemovePrefix(line, "Parent "))
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break;
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auto offset = parseNumericAttribute(line, "Parent", "offset: ");
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Type& type = parseType(input, rootIndent + 2);
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c.parents.emplace_back(type, offset * 8);
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}
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// No more parents for us - put back the line we just read
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input = origInput;
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}
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void TypeGraphParser::parseMembers(Class& c,
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std::string_view& input,
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size_t rootIndent) {
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std::string_view origInput = input;
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for (std::string_view line; getline(input, line); origInput = input) {
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size_t indent = stripIndent(line);
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if (indent != rootIndent)
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break;
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// Format: "Member: memberName (offset: 0)"
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if (!tryRemovePrefix(line, "Member: "))
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break;
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auto nameEndPos = line.find(' ');
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auto name = line.substr(0, nameEndPos);
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auto offset = parseNumericAttribute(line, "Member", "offset: ");
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auto align = tryParseNumericAttribute(line, "align: ");
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auto bitsize = tryParseNumericAttribute(line, "bitsize: ");
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Type& type = parseType(input, rootIndent + 2);
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Member member{type, std::string{name}, static_cast<uint64_t>(offset * 8)};
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if (align)
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member.align = static_cast<uint64_t>(*align);
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if (bitsize)
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member.bitsize = static_cast<uint64_t>(*bitsize);
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c.members.push_back(member);
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}
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// No more members for us - put back the line we just read
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input = origInput;
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}
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void TypeGraphParser::parseFunctions(Class& c,
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std::string_view& input,
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size_t rootIndent) {
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std::string_view origInput = input;
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for (std::string_view line; getline(input, line); origInput = input) {
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size_t indent = stripIndent(line);
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if (indent != rootIndent)
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break;
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// Format: "Function: funcName"
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if (!tryRemovePrefix(line, "Function: "))
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break;
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auto name = line;
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Function func{std::string{name}};
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c.functions.push_back(func);
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}
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// No more functions for us - put back the line we just read
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input = origInput;
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}
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void TypeGraphParser::parseChildren(Class& c,
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std::string_view& input,
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size_t rootIndent) {
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std::string_view origInput = input;
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for (std::string_view line; getline(input, line); origInput = input) {
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size_t indent = stripIndent(line);
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if (indent != rootIndent)
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break;
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// Format: "Child"
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if (!tryRemovePrefix(line, "Child"))
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break;
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Type& type = parseType(input, rootIndent + 2);
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auto* childClass = dynamic_cast<Class*>(&type);
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if (!childClass)
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throw TypeGraphParserError{"Invalid type for child"};
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c.children.push_back(*childClass);
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}
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// No more children for us - put back the line we just read
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input = origInput;
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}
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