69 lines
1.8 KiB
C++
69 lines
1.8 KiB
C++
#include <boost/algorithm/string/split.hpp>
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#include <boost/algorithm/string/classification.hpp>
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#include <fstream>
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#include <vector>
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#include <map>
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#include "ramInterpreter.h"
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RamInterpreter::RamInterpreter(std::string filename) {
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std::ifstream source_file;
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source_file.open(filename.c_str());
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int count = 0;
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std::string buffer;
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while (std::getline(source_file, buffer)) {
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// Remove all char after #
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buffer = buffer.substr(0, buffer.find('#'));
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// Remove all spaces preceding the instruction
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while(std::isspace(*buffer.begin())) {
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buffer.erase(buffer.begin());
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}
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// Remove all spaces that follow the instruction
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while(std::isspace(*buffer.rbegin())) {
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buffer.erase(buffer.length()-1);
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}
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// Check if there are a label
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int find = buffer.find(':');
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if(find != std::string::npos) {
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std::string label_name = buffer.substr(0, find);
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label[label_name] = count;
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buffer = buffer.substr(find, std::string::npos);
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// Remove all spaces preceding the instruction
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while(std::isspace(*buffer.begin())) {
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buffer.erase(buffer.begin());
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}
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}
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// Skip if empty line
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if(buffer.empty()) {
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count++;
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continue;
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}
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// Save instruction
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std::vector<std::string> temp;
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boost::algorithm::split(temp, buffer, boost::algorithm::is_any_of(" "));
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if(temp.size() != 2) {
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std::cerr << "Syntax error on line " << count+1 << ": " << buffer << std::endl;
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std::abort();
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}
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instruction_t instruction;
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instruction.verb = temp[0];
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instruction.noun = temp[1];
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code.push_back(instruction);
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count++;
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}
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source_file.close();
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}
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