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#include <map>
#include <vector>
#include <string>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
enum TokenType : int8_t
{
TOK_LABEL,
TOK_REF,
TOK_U8,
TOK_U16,
TOK_U32
};
struct Stream
{
std::string name;
std::vector<TokenType> tokenTypes;
std::vector<uint32_t> tokenValues;
std::vector<std::string> tokenComments;
};
Stream stringStream;
std::vector<Stream> streams;
std::map<std::string, int> streamIndex;
std::vector<int> streamStack;
std::vector<int> labels;
std::map<std::string, int> labelIndex;
std::vector<std::string> preText, postText;
const char *skipWhitespace(const char *p)
{
while (*p == ' ' || *p == '\t')
p++;
return p;
}
int main()
{
bool verbose = true;
// bool bigEndian = false;
char buffer[512];
while (fgets(buffer, 512, stdin) != nullptr)
{
std::string cmd = strtok(buffer, " \t\r\n");
if (cmd == "pre") {
const char *p = skipWhitespace(strtok(nullptr, "\r\n"));
preText.push_back(p);
continue;
}
if (cmd == "post") {
const char *p = skipWhitespace(strtok(nullptr, "\r\n"));
postText.push_back(p);
continue;
}
if (cmd == "push") {
const char *p = strtok(buffer, " \t\r\n");
if (streamIndex.count(p) == 0) {
streamIndex[p] = streams.size();
streams.resize(streams.size() + 1);
streams.back().name = p;
}
streamStack.push_back(streamIndex.at(p));
continue;
}
if (cmd == "pop") {
streamStack.pop_back();
continue;
}
if (cmd == "label" || cmd == "ref") {
const char *label = strtok(buffer, " \t\r\n");
const char *comment = skipWhitespace(strtok(buffer, "\r\n"));
Stream &s = streams.at(streamStack.back());
if (labelIndex.count(label) == 0) {
labelIndex[label] = labels.size();
labels.push_back(-1);
}
s.tokenTypes.push_back(cmd == "label" ? TOK_LABEL : TOK_REF);
s.tokenValues.push_back(labelIndex.at(label));
if (verbose)
s.tokenComments.push_back(comment);
continue;
}
if (cmd == "u8" || cmd == "u16" || cmd == "u32") {
const char *value = strtok(buffer, " \t\r\n");
const char *comment = skipWhitespace(strtok(buffer, "\r\n"));
Stream &s = streams.at(streamStack.back());
s.tokenTypes.push_back(cmd == "u8" ? TOK_U8 : cmd == "u16" ? TOK_U16 : TOK_U32);
s.tokenValues.push_back(atoll(value));
if (verbose)
s.tokenComments.push_back(comment);
continue;
}
if (cmd == "s") {
const char *value = skipWhitespace(strtok(buffer, "\r\n"));
std::string label = std::string("str:") + value;
Stream &s = streams.at(streamStack.back());
if (labelIndex.count(label) == 0) {
labelIndex[label] = labels.size();
labels.push_back(-1);
}
s.tokenTypes.push_back(TOK_REF);
s.tokenValues.push_back(labelIndex.at(label));
if (verbose)
s.tokenComments.push_back(value);
stringStream.tokenTypes.push_back(TOK_LABEL);
stringStream.tokenValues.push_back(labelIndex.at(label));
while (1) {
stringStream.tokenTypes.push_back(TOK_U8);
stringStream.tokenValues.push_back(*value);
if (*value == 0)
break;
value++;
}
continue;
}
abort();
}
assert(!streams.empty());
assert(streamStack.empty());
streams.push_back(Stream());
streams.back().tokenTypes.swap(stringStream.tokenTypes);
streams.back().tokenValues.swap(stringStream.tokenValues);
return 0;
}
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