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pacciani/Nodes.cpp
2014-11-27 22:10:10 +01:00

196 lines
4.2 KiB
C++

#include "Nodes.hpp"
using namespace monicelli;
static const std::string BLOCK = " ";
void emitIndent(std::ostream &stream, int indent) {
for (int i = 0; i < indent; ++i) {
stream << BLOCK;
}
}
void Id::emit(std::ostream &stream, int indent) {
stream << value;
}
void Integer::emit(std::ostream &stream, int indent) {
stream << value;
}
void Float::emit(std::ostream &stream, int indent) {
stream << value;
}
void ExpNode::emit(std::ostream &stream, int indent) {
left->emit(stream);
stream << ' ' << getSym() << ' ';
right->emit(stream);
}
void SemiExpNode::emit(std::ostream &stream, int indent) {
SimpleExpression *e = dynamic_cast<SimpleExpression*>(left.get());
bool braces = (e == nullptr);
stream << ' ' << getSym() << ' ';
if (braces) stream << "(";
left->emit(stream);
if (braces) stream << ")";
}
void StatementList::emit(std::ostream &stream, int indent) {
for (Statement *s: *this) {
emitIndent(stream, indent);
s->emit(stream, indent);
stream << ";\n";
}
}
void Return::emit(std::ostream &stream, int indent) {
stream << "return";
if (expression != nullptr) {
stream << ' ';
expression->emit(stream);
}
}
void Loop::emit(std::ostream &stream, int indent) {
stream << "do {\n";
body->emit(stream, indent + 1);
emitIndent(stream, indent);
stream << "} while (";
condition->emit(stream);
stream << ")";
}
void BranchCase::emit(std::ostream &stream, int indent) {
condition->emit(stream);
stream << ") {\n";
body->emit(stream, indent);
emitIndent(stream, indent - 1);
stream << "}";
}
void Branch::emit(std::ostream &stream, int indent) {
stream << "if (";
var->emit(stream);
if (cases->size() > 0) {
BranchCase *last = cases->back();
for (BranchCase *c: *cases) {
c->emit(stream, indent + 1);
if (c != last) {
stream << " else if (";
var->emit(stream);
}
}
}
if (els != nullptr) {
stream << " else {\n";
els->emit(stream, indent + 1);
emitIndent(stream, indent);
stream << "}";
}
}
void VarDeclaration::emit(std::ostream &stream, int indent) {
switch (type) {
case Type::INT:
stream << "int";
break;
case Type::CHAR:
stream << "char";
break;
case Type::FLOAT:
stream << "float";
break;
case Type::BOOL:
stream << "bool";
break;
case Type::DOUBLE:
stream << "double";
break;
}
stream << ' ';
if (point) stream << '*';
name->emit(stream);
if (init != nullptr) {
stream << " = ";
init->emit(stream);
}
}
void Assignment::emit(std::ostream &stream, int indent) {
name->emit(stream);
stream << " = ";
value->emit(stream);
}
void Print::emit(std::ostream &stream, int indent) {
stream << "std::cout << ";
expression->emit(stream);
stream << " << std::endl";
}
void Input::emit(std::ostream &stream, int indent) {
stream << "std::cin >> ";
variable->emit(stream);
}
void Abort::emit(std::ostream &stream, int indent) {
stream << "std::exit(1)";
}
void Assert::emit(std::ostream &stream, int indent) {
stream << "std::assert(";
expression->emit(stream);
stream << ")";
}
void FunctionCall::emit(std::ostream &stream, int indent) {
name->emit(stream);
stream << "(";
args->emit(stream);
stream << ")";
}
void Function::emit(std::ostream &stream, int indent) {
emitIndent(stream, indent);
stream << "void ";
name->emit(stream);
stream << "(";
args->emit(stream);
stream << ") {\n";
body->emit(stream, indent + 1);
stream << "}\n\n";
}
void Main::emit(std::ostream &stream, int indent) {
emitIndent(stream, indent);
stream << "int main() {\n";
body->emit(stream, indent + 1);
stream << "}\n";
}
void Program::emit(std::ostream &stream, int indent) {
stream << "#include <iostream>\n";
stream << "#include <cstdlib>\n\n";
for (Function *f: functions) {
f->emit(stream);
}
if (main != nullptr) {
main->emit(stream);
}
}