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genericformatter.cpp
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1305 lines (1162 loc) · 37.4 KB
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#include <ctype.h>
#include <stack>
#include "genericformatter.h"
using namespace BinaryNinja;
using namespace std;
enum ItemType
{
Atom,
Comment,
Operator,
FieldAccessor,
Argument,
ArgumentSeparator,
Statement,
StatementSeparator,
StringComponent,
StringSeparator,
StringWhitespace,
FormatSpecifier,
EscapeSequence,
Group,
Container,
StartOfContainer,
ContainerContents,
EndOfContainer,
};
static string TrimString(const string& str)
{
size_t startPos = 0;
size_t endPos = 0;
bool start = true;
for (size_t i = 0; i < str.size(); i++)
{
if (isspace(str[i]))
{
if (start)
{
startPos = i + 1;
endPos = i + 1;
}
}
else
{
start = false;
endPos = i + 1;
}
}
return str.substr(startPos, endPos - startPos);
}
static string TrimLeadingWhitespace(const string& str)
{
size_t startPos = 0;
for (size_t i = 0; i < str.size(); i++)
{
if (!isspace(str[i]))
{
startPos = i;
break;
}
}
return str.substr(startPos);
}
static string TrimTrailingWhitespace(const string& str)
{
if (str.empty())
return str;
size_t endPos = str.size();
for (size_t i = str.size() - 1; i > 0; i--)
{
if (!isspace(str[i]))
{
endPos = i + 1;
break;
}
}
return str.substr(0, endPos);
}
static const map<string, BNOperatorPrecedence> g_operatorPrecedenceMap = {{"=", AssignmentOperatorPrecedence},
{":=", AssignmentOperatorPrecedence}, {"+=", AssignmentOperatorPrecedence}, {"-=", AssignmentOperatorPrecedence},
{"*=", AssignmentOperatorPrecedence}, {"/=", AssignmentOperatorPrecedence}, {"s/=", AssignmentOperatorPrecedence},
{"u/=", AssignmentOperatorPrecedence}, {"%=", AssignmentOperatorPrecedence}, {"s%=", AssignmentOperatorPrecedence},
{"u%=", AssignmentOperatorPrecedence}, {"&=", AssignmentOperatorPrecedence}, {"|=", AssignmentOperatorPrecedence},
{"^=", AssignmentOperatorPrecedence}, {">>=", AssignmentOperatorPrecedence}, {"s>>=", AssignmentOperatorPrecedence},
{"u>>=", AssignmentOperatorPrecedence}, {"<<=", AssignmentOperatorPrecedence},
{"s<<=", AssignmentOperatorPrecedence}, {"u<<=", AssignmentOperatorPrecedence}, {"?", TernaryOperatorPrecedence},
{":", TernaryOperatorPrecedence}, {"||", LogicalOrOperatorPrecedence}, {"or", LogicalOrOperatorPrecedence},
{"&&", LogicalAndOperatorPrecedence}, {"and", LogicalAndOperatorPrecedence}, {"&", BitwiseAndOperatorPrecedence},
{"|", BitwiseOrOperatorPrecedence}, {"^", BitwiseXorOperatorPrecedence}, {"==", EqualityOperatorPrecedence},
{"===", EqualityOperatorPrecedence}, {"!=", EqualityOperatorPrecedence}, {"!==", EqualityOperatorPrecedence},
{"<>", EqualityOperatorPrecedence}, {"<", CompareOperatorPrecedence}, {"s<", CompareOperatorPrecedence},
{"u<", CompareOperatorPrecedence}, {"<=", CompareOperatorPrecedence}, {"s<=", CompareOperatorPrecedence},
{"u<=", CompareOperatorPrecedence}, {">", CompareOperatorPrecedence}, {"s>", CompareOperatorPrecedence},
{"u>", CompareOperatorPrecedence}, {">=", CompareOperatorPrecedence}, {"s>=", CompareOperatorPrecedence},
{"u>=", CompareOperatorPrecedence}, {"<<", ShiftOperatorPrecedence}, {"s<<", ShiftOperatorPrecedence},
{"u<<", ShiftOperatorPrecedence}, {">>", ShiftOperatorPrecedence}, {"s>>", ShiftOperatorPrecedence},
{"u>>", ShiftOperatorPrecedence}, {"+", AddOperatorPrecedence}, {"-", AddOperatorPrecedence},
{"*", MultiplyOperatorPrecedence}, {"/", MultiplyOperatorPrecedence}, {"s/", MultiplyOperatorPrecedence},
{"u/", MultiplyOperatorPrecedence}, {"%", MultiplyOperatorPrecedence}, {"s%", MultiplyOperatorPrecedence},
{"u%", MultiplyOperatorPrecedence}, {"!", UnaryOperatorPrecedence}, {"not", UnaryOperatorPrecedence},
{"~", UnaryOperatorPrecedence}};
static BNOperatorPrecedence GetOperatorPrecedence(const InstructionTextToken& token, size_t* ternary = nullptr)
{
string trimmedText = TrimString(token.text);
auto i = g_operatorPrecedenceMap.find(trimmedText);
if (i != g_operatorPrecedenceMap.end())
{
if (i->second == TernaryOperatorPrecedence && ternary)
{
// HLIL uses ':' in additional contexts, so look for active ternary operators before
// treating it as part of a ternary
if (trimmedText == "?")
{
(*ternary)++;
}
else if (trimmedText == ":")
{
if (*ternary)
(*ternary)--;
else
return MemberAndFunctionOperatorPrecedence;
}
}
return i->second;
}
return MemberAndFunctionOperatorPrecedence;
}
struct Item
{
ItemType type;
vector<Item> items;
vector<InstructionTextToken> tokens;
size_t width;
void AppendAllTokens(vector<InstructionTextToken>& output, bool& firstTokenOfLine)
{
if (firstTokenOfLine)
{
if (!tokens.empty())
{
InstructionTextToken token = tokens.front();
string trimmedText = TrimLeadingWhitespace(token.text);
token.width -= token.text.size() - trimmedText.size();
token.text = trimmedText;
output.emplace_back(token);
output.insert(output.end(), tokens.begin() + 1, tokens.end());
firstTokenOfLine = false;
}
}
else
{
output.insert(output.end(), tokens.begin(), tokens.end());
}
for (auto& item : items)
item.AppendAllTokens(output, firstTokenOfLine);
}
void AddTokenToLastAtom(const InstructionTextToken& token)
{
if (!tokens.empty())
tokens.emplace_back(token);
else if (items.empty())
items.emplace_back(Item {Atom, {}, {token}, 0});
else
items.back().AddTokenToLastAtom(token);
}
void AddTokenToLastStringComponent(const InstructionTextToken& token)
{
if (!tokens.empty())
tokens.emplace_back(token);
else if (items.empty())
items.emplace_back(Item {StringComponent, {}, {token}, 0});
else
items.back().AddTokenToLastStringComponent(token);
}
void CalculateWidth()
{
width = 0;
for (auto& token : tokens)
width += token.width;
for (auto& item : items)
{
item.CalculateWidth();
width += item.width;
}
}
};
struct ItemLayoutStackEntry
{
vector<Item> items;
size_t additionalContinuationIndentation;
size_t desiredWidth;
size_t desiredContinuationWidth;
size_t desiredStringWidth;
bool newLineOnReenteringScope;
};
static vector<Item> CreateStatementItems(const vector<Item>& items)
{
vector<Item> result;
result.reserve(items.size());
vector<Item> pending;
pending.reserve(items.size());
bool hasArgs = false;
auto flushStatement = [&]() {
if (!pending.empty()) {
result.emplace_back(
Item{
Statement,
std::move(pending),
vector<InstructionTextToken>{},
0
}
);
pending.clear();
}
};
for (auto const& orig : items) {
// copy so we can move out of i.tokens / i.items safely
Item i = orig;
if (i.type == StatementSeparator) {
hasArgs = true;
if (pending.empty()) {
// first separator in this statement
result.emplace_back(
Item{
Atom,
{},
std::move(i.tokens),
0
}
);
} else {
// append tokens to last atom in pending, then flush
for (auto& t : i.tokens)
pending.back().AddTokenToLastAtom(std::move(t));
flushStatement();
}
}
else if (i.type == StartOfContainer && pending.empty()) {
// emit container boundary directly if no pending args
result.emplace_back(std::move(i));
}
else if (i.type == EndOfContainer && hasArgs && !pending.empty()) {
// flush any accumulated args as a Statement, then emit the container end
flushStatement();
result.emplace_back(std::move(i));
}
else {
// accumulate everything else for possible statement grouping
vector<Item> nested;
if (!i.items.empty())
nested = CreateStatementItems(i.items);
pending.emplace_back(
Item{
i.type,
std::move(nested),
std::move(i.tokens),
0
}
);
}
}
// final tail: either flush into a Statement or append raw
if (!pending.empty()) {
if (hasArgs) {
flushStatement();
} else {
result.insert(
result.end(),
make_move_iterator(pending.begin()),
make_move_iterator(pending.end())
);
}
}
return result;
}
static vector<InstructionTextToken> ParseStringToken(
const InstructionTextToken& unprocessedStringToken,
const size_t maxParsingLength
)
{
const string_view src = unprocessedStringToken.text;
const size_t tail = src.size();
vector<InstructionTextToken> result;
size_t curStart = 0, curEnd = 0;
auto ConstructToken = [&](size_t start, size_t end)
{
InstructionTextToken token = unprocessedStringToken;
token.text = string(src.substr(start, end - start));
token.width = token.text.size();
result.emplace_back(std::move(token));
};
auto flushToken = [&](size_t start, size_t end)
{
if (start < end)
ConstructToken(start, end);
};
// We generally split along spaces while keeping words intact, but some cases have
// specific splitting behavior:
//
// - Any format specifier (starting with %) will be treated as an atom even if embedded
// within a word
// - Any escape sequence will also be treated as an atom
// - We split along punctuation like commas, colons, periods, and semicolons, grouping
// trailing punctuation together.
while (curEnd < tail)
{
char c = src[curEnd];
if (c == '%')
{
// Flush before format specifier
flushToken(curStart, curEnd);
size_t start = curEnd;
curEnd++;
while (curEnd < tail && (isalnum(src[curEnd]) || src[curEnd]=='.' || src[curEnd]=='-'))
curEnd++;
ConstructToken(start, curEnd);
curStart = curEnd;
}
else if (c == '\\')
{
// Flush before escape sequence
flushToken(curStart, curEnd);
size_t start = curEnd;
curEnd++; // consume '\'
if (curEnd < tail)
curEnd++; // consume escaped char
ConstructToken(start, curEnd);
curStart = curEnd;
}
else if (isspace(c))
{
// Flush before whitespace
flushToken(curStart, curEnd);
size_t start = curEnd;
while (curEnd < tail && isspace(src[curEnd]))
curEnd++;
ConstructToken(start, curEnd);
curStart = curEnd;
}
else if (c == ',' || c == '.' || c == ':' || c == ';')
{
// Flush before punctuation
flushToken(curStart, curEnd);
// Group together repeated punctuation
size_t start = curEnd;
while (curEnd < tail && src[curEnd] == c)
curEnd++;
ConstructToken(start, curEnd);
curStart = curEnd;
}
else
{
curEnd++;
}
// Check if we've exceeded max parsing length
if (curEnd > maxParsingLength)
{
// Flush any pending token
flushToken(curStart, maxParsingLength);
// Create single token with remaining text
InstructionTextToken remainingToken = unprocessedStringToken;
remainingToken.text = string(src.substr(maxParsingLength));
remainingToken.width = remainingToken.text.size();
result.emplace_back(std::move(remainingToken));
return result;
}
}
flushToken(curStart, curEnd);
return result;
}
static vector<Item> CreateStringGroups(const vector<Item>& items)
{
// We handle strings mostly the same as other types except the introduction
// of the StringComponent and StringWhitespace types.
//
// The reason we introduce these is for the specific behaviors when formatting multiline
// string annotations. String annotations have a different desired width than tokens
// like arguments, comments, etc.
//
// Additionally, we don't wrap trailing whitespace until the preceding token is within
// the wrapping width, unlike other token types.
vector<Item> result;
result.reserve(items.size());
vector<Item> pending;
pending.reserve(items.size());
bool hasStrings = false;
// flush pending into one StringComponent
auto flushString = [&]() {
if (!pending.empty()) {
result.emplace_back(
Item{ StringComponent,
std::move(pending),
{},
0 }
);
pending.clear();
}
};
for (auto const& orig : items) {
Item i = orig;
if (i.type == StringSeparator && !i.tokens.empty()) {
if (pending.empty()) {
result.emplace_back(
Item{ StringComponent,
vector<Item>{},
std::move(i.tokens),
0 }
);
} else {
for (auto& t : i.tokens)
pending.back().AddTokenToLastStringComponent(std::move(t));
flushString();
}
hasStrings = true;
}
else if (i.type == StringWhitespace) {
flushString();
result.emplace_back(
Item{ StringWhitespace,
std::move(i.items),
std::move(i.tokens),
0 }
);
}
else if (i.type == FormatSpecifier || i.type == EscapeSequence) {
flushString();
result.emplace_back(
Item{ StringComponent,
std::move(i.items),
std::move(i.tokens),
0 }
);
}
else if (i.type == StartOfContainer && pending.empty()) {
result.emplace_back(std::move(i));
}
else if (i.type == EndOfContainer && hasStrings && !pending.empty()) {
result.emplace_back(
Item{ Group,
std::move(pending),
vector<InstructionTextToken>{},
0 }
);
result.emplace_back(std::move(i));
pending.clear();
}
else {
vector<Item> nested;
if (!i.items.empty())
nested = CreateStringGroups(i.items);
pending.emplace_back(
Item{ i.type,
std::move(nested),
std::move(i.tokens),
0 }
);
}
}
if (!pending.empty()) {
if (hasStrings) {
flushString();
} else {
result.insert(
result.end(),
make_move_iterator(pending.begin()),
make_move_iterator(pending.end())
);
}
}
return result;
}
static vector<Item> CreateAssignmentOperatorGroups(const vector<Item>& items)
{
vector<Item> result;
result.reserve(items.size());
vector<Item> pending;
pending.reserve(items.size());
bool hasOperators = false;
auto flushStatement = [&]()
{
if (!pending.empty())
{
result.emplace_back(Item {Statement, std::move(pending), {}, 0});
pending.clear();
}
};
for (auto& i : items)
{
if (i.type == Operator && !i.tokens.empty())
{
BNOperatorPrecedence precedence = GetOperatorPrecedence(i.tokens[0]);
if (precedence == AssignmentOperatorPrecedence)
{
if (pending.empty())
{
result.emplace_back(Item {Atom, {}, std::move(i.tokens), 0});
}
else
{
for (auto& j : i.tokens)
pending.back().AddTokenToLastAtom(j);
flushStatement();
}
hasOperators = true;
continue;
}
}
if (i.type == StartOfContainer && pending.empty())
{
result.emplace_back(std::move(i));
}
else if (i.type == EndOfContainer && hasOperators && !pending.empty())
{
result.emplace_back(Item {Group, std::move(pending), {}, 0});
result.emplace_back(i);
pending.clear();
}
else
{
pending.emplace_back(Item {i.type, CreateAssignmentOperatorGroups(i.items), i.tokens, 0});
}
}
if (!pending.empty())
{
if (hasOperators)
result.emplace_back(Item {Group, std::move(pending), {}, 0});
else
result.insert(result.end(), pending.begin(), pending.end());
}
return result;
}
static vector<Item> CreateArgumentItems(const vector<Item>& items, bool inContainer)
{
vector<Item> result;
result.reserve(items.size());
vector<Item> pending;
pending.reserve(items.size());
bool hasArgs = false;
auto flushArgument = [&]()
{
if (!pending.empty())
{
result.emplace_back(
Item{
inContainer ? Argument : Group,
std::move(pending),
vector<InstructionTextToken>{},
0
}
);
pending.clear();
}
};
for (auto const& orig: items)
{
Item i = orig;
if (i.type == ArgumentSeparator)
{
if (pending.empty())
{
result.emplace_back(
Item{
Atom,
vector<Item>{},
std::move(i.tokens),
0
}
);
}
else
{
for (auto& t: i.tokens)
pending.back().AddTokenToLastAtom(std::move(t));
flushArgument();
}
hasArgs = true;
}
else if (i.type == StartOfContainer && pending.empty())
{
result.emplace_back(std::move(i));
}
else if (i.type == EndOfContainer && hasArgs && !pending.empty())
{
flushArgument();
result.emplace_back(std::move(i));
}
else
{
vector<Item> nested;
if (!i.items.empty())
nested = CreateArgumentItems(i.items, i.type == Container);
pending.emplace_back(
Item{
i.type,
std::move(nested),
std::move(i.tokens),
0
}
);
}
}
if (!pending.empty())
{
if (hasArgs)
{
flushArgument();
}
else
{
result.insert(
result.end(),
make_move_iterator(pending.begin()),
make_move_iterator(pending.end())
);
}
}
return result;
}
static vector<Item> CreateOperatorGroups(const vector<Item>& items)
{
vector<Item> result;
result.reserve(items.size());
vector<Item> pending;
pending.reserve(items.size());
bool hasOperators = false;
auto flushOperator = [&]()
{
if (!pending.empty())
{
if (pending.size() == 1)
{
result.emplace_back(std::move(pending[0]));
}
else
{
result.emplace_back(
Item{
Group,
std::move(pending),
{},
0
}
);
}
pending.clear();
}
};
for (auto const& orig: items)
{
Item i = orig;
if (i.type == Operator)
{
flushOperator();
result.emplace_back(std::move(i));
hasOperators = true;
}
else if (i.type == StartOfContainer && pending.empty())
{
result.emplace_back(std::move(i));
}
else if (i.type == EndOfContainer && hasOperators && pending.size() > 1)
{
flushOperator();
result.emplace_back(std::move(i));
}
else
{
vector<Item> nested;
if (!i.items.empty())
nested = CreateOperatorGroups(i.items);
pending.emplace_back(
Item{
i.type,
std::move(nested),
std::move(i.tokens),
0
}
);
}
}
if (!pending.empty())
{
if (hasOperators && pending.size() > 1)
{
flushOperator();
}
else
{
result.insert(
result.end(),
make_move_iterator(pending.begin()),
make_move_iterator(pending.end())
);
}
}
return result;
}
static vector<Item> CreateOperatorPrecedenceGroups(const vector<Item>& items)
{
// Look for the operator with the lowest precedence. These will be grouped first.
optional<BNOperatorPrecedence> lowestPrecedence;
size_t ternary = 0;
for (auto i = items.begin(); i != items.end(); ++i)
{
if (i != items.begin() && i->type == Operator && !i->tokens.empty())
{
BNOperatorPrecedence precedence = GetOperatorPrecedence(i->tokens[0], &ternary);
if (!lowestPrecedence.has_value() || precedence < lowestPrecedence.value())
lowestPrecedence = precedence;
}
}
// If there were no operators, no need to group at this level. Just traverse down into child items.
if (!lowestPrecedence.has_value())
{
vector<Item> result;
result.reserve(items.size());
for (auto& i : items)
result.emplace_back(Item {i.type, CreateOperatorPrecedenceGroups(i.items), i.tokens, 0});
return result;
}
// Go through the items and split the items into groups around the lowest precedence operator
vector<Item> result, pending;
ternary = 0;
for (auto i = items.begin(); i != items.end(); ++i)
{
if (i != items.begin() && i->type == Operator && !i->tokens.empty())
{
BNOperatorPrecedence precedence = GetOperatorPrecedence(i->tokens[0], &ternary);
if (precedence == lowestPrecedence.value())
{
if (pending.size() == 1)
result.emplace_back(pending[0]);
else if (!pending.empty())
result.emplace_back(Item {Group, std::move(pending), {}, 0});
else
result.insert(result.end(), pending.begin(), pending.end());
pending.clear();
}
}
if (i->type == StartOfContainer && pending.empty())
{
result.emplace_back(*i);
}
else if (i->type == EndOfContainer && pending.size() > 1 && !result.empty())
{
result.emplace_back(Item {Group, std::move(pending), {}, 0});
result.emplace_back(*i);
pending.clear();
}
else
{
pending.emplace_back(*i);
}
}
if (!pending.empty())
{
if (pending.size() > 1 && !result.empty())
result.emplace_back(Item {Group, pending, {}, 0});
else
result.insert(result.end(), pending.begin(), pending.end());
}
// Recurse into these groups and process the next lowest precedence in each
vector<Item> processed;
processed.reserve(result.size());
for (auto& i : result)
processed.emplace_back(Item{i.type, CreateOperatorPrecedenceGroups(i.items), i.tokens, 0});
return processed;
}
static vector<Item> RelocateStartAndEndOfContainerItems(const vector<Item>& items)
{
vector<Item> result;
for (auto& i : items)
{
if (!result.empty() && i.type == Container && !i.items.empty() && i.items.front().type == StartOfContainer)
{
Item startOfContainer = i.items.front();
for (auto& j : startOfContainer.tokens)
result.back().AddTokenToLastAtom(j);
auto containerContents = i.items.begin() + 1;
if (containerContents != i.items.end() && containerContents->type == EndOfContainer)
{
for (auto& j : containerContents->tokens)
result.back().AddTokenToLastAtom(j);
++containerContents;
}
vector<Item> containerItems(containerContents, i.items.end());
containerItems = RelocateStartAndEndOfContainerItems(containerItems);
if (!containerItems.empty())
result.emplace_back(Item {Container, containerItems, {}, 0});
}
else if (i.type == EndOfContainer && !result.empty())
{
for (auto& j : i.tokens)
result.back().AddTokenToLastAtom(j);
}
else
{
result.emplace_back(Item {i.type, RelocateStartAndEndOfContainerItems(i.items), i.tokens, 0});
}
}
return result;
}
GenericLineFormatter::GenericLineFormatter(): LineFormatter("GenericLineFormatter")
{
}
vector<DisassemblyTextLine> GenericLineFormatter::FormatLines(
const vector<DisassemblyTextLine>& lines, const LineFormatterSettings& settings)
{
vector<DisassemblyTextLine> result;
for (size_t i = 0; i < lines.size(); i++)
{
const DisassemblyTextLine& currentLine = lines[i];
size_t totalLength = currentLine.GetTotalWidth();
size_t indentation = currentLine.GetAddressAndIndentationWidth();
// Check width against settings
size_t contentLength = totalLength - indentation;
if (totalLength <= settings.desiredLineLength || contentLength <= settings.minimumContentLength)
{
// Line fits, emit as-is
result.emplace_back(currentLine);
continue;
}
// Calculate indentation for continuation lines. If the next line in the input is more indented, make
// the continuation lines more indented than that to separate the continuation from the new scope.
size_t continuationIndentation = indentation + settings.tabWidth;
if ((i + 1) < lines.size())
{
size_t nextLineIndentation = lines[i + 1].GetAddressAndIndentationWidth();
if (nextLineIndentation > indentation)
continuationIndentation = nextLineIndentation + settings.tabWidth;
}
size_t additionalContinuationIndentation = continuationIndentation - indentation;
// Compute the target length for this line
size_t desiredWidth = settings.minimumContentLength;
if (indentation < settings.desiredLineLength)
{
size_t remainingWidth = settings.desiredLineLength - indentation;
if (remainingWidth > desiredWidth)
desiredWidth = remainingWidth;
}
// Compute the target length for the continuation lines
size_t desiredContinuationWidth = settings.minimumContentLength;
if (continuationIndentation < settings.desiredLineLength)
{
size_t remainingWidth = settings.desiredLineLength - continuationIndentation;
if (remainingWidth > desiredContinuationWidth)
desiredContinuationWidth = remainingWidth;
}
// Compute target string width for this line
size_t desiredStringWidth = settings.stringWrappingWidth;
if (indentation < settings.desiredLineLength)
{
size_t remainingStringWidth = settings.desiredLineLength - indentation;
if (remainingStringWidth > desiredStringWidth)
desiredStringWidth = remainingStringWidth;
}
// Gather the indentation tokens at the beginning of the line
vector<InstructionTextToken> indentationTokens = currentLine.GetAddressAndIndentationTokens();
size_t tokenIndex = indentationTokens.size();
// First break the line down into nested container items. A container is anything between a pair of
// BraceTokens
vector<Item> items;
stack<vector<Item>> itemStack;
for (; tokenIndex < currentLine.tokens.size(); tokenIndex++)
{
const InstructionTextToken& token = currentLine.tokens[tokenIndex];
string trimmedText = TrimString(token.text);
switch (token.type)
{
case BraceToken:
// Beginning of string
if (trimmedText == "\"" && tokenIndex + 1 < currentLine.tokens.size() && currentLine.tokens[tokenIndex + 1].type == StringToken)
{
// Create a ContainerContents item and place it onto the item stack. This will hold anything
// inside the container once the end of the container is found.
items.emplace_back(Item {Container, {}, {}, 0});
itemStack.push(items);
// Starting a new context
items.clear();
items.emplace_back(Item {StartOfContainer, {}, {token}, 0});
}
// End of string
else if (trimmedText == "\"" && tokenIndex > 0 && currentLine.tokens[tokenIndex - 1].type == StringToken)
{
items.emplace_back(Item {EndOfContainer, {}, {token}, 0});
if (itemStack.empty())
break;
// Go back up the item stack and add the items to the container
vector<Item> parent = itemStack.top();
itemStack.pop();
parent.back().items.insert(parent.back().items.end(), items.begin(), items.end());
items = parent;
}
else if (trimmedText == "(" || trimmedText == "[" || trimmedText == "{")
{
// Create a ContainerContents item and place it onto the item stack. This will hold anything
// inside the container once the end of the container is found.
items.emplace_back(Item {Container, {}, {}, 0});
itemStack.push(items);