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Added rough but working scoping.

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This commit is contained in:
Nathan Braswell
2013-12-27 13:05:07 -06:00
parent 15674fec2a
commit 98b899b8a9
7 changed files with 170 additions and 53 deletions
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30
src/CGenerator.cpp
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@@ -20,7 +20,22 @@ std::string CGenerator::generate(NodeTree<ASTData>* from) {
std::string output = "";
switch (data.type) {
case translation_unit:
//Do nothing
//Declare everything in translation unit scope here. (allows stuff from other files, automatic forward declarations)
for (auto i = data.scope.begin(); i != data.scope.end(); i++) {
NodeTree<ASTData>* declaration = i->second;
ASTData declarationData = i->second->getData();
switch(declarationData.type) {
case identifier:
output += ValueTypeToCType(declarationData.valueType) + " " + declarationData.symbol.getName() + "; /*identifier*/\n";
break;
case function:
output += "/*func*/\n";
break;
default:
std::cout << "Declaration? of unknown type " << ASTData::ASTTypeToString(declarationData.type) << " in translation unit scope" << std::endl;
output += "/*unknown declaration*/\n";
}
}
break;
case interpreter_directive:
//Do nothing
@@ -82,18 +97,21 @@ std::string CGenerator::generate(NodeTree<ASTData>* from) {
return strSlice(generate(children[0]), 3, -4);
case function_call:
{
//NOTE: The first (0th) child of a function call node is the declaration of the function
//Handle operators specially for now. Will later replace with
//Inlined functions in the standard library
std::string name = data.symbol.getName();
std::cout << name << " == " << children[0]->getData().symbol.getName() << std::endl;
if (name == "++" || name == "--")
return generate(children[0]) + name;
if (name == "*" && children.size() == 1) //Is dereference, not multiplication
return "*(" + generate(children[0]) + ")";
return generate(children[1]) + name;
if (name == "*" && children.size() == 2) //Is dereference, not multiplication
return "*(" + generate(children[1]) + ")";
if (name == "+" || name == "-" || name == "*" || name == "/" || name == "==" || name == ">=" || name == "<=" || name == "!=" || name == "<" || name == ">" || name == "%" || name == "+=" || name == "-=" || name == "*=" || name == "/=") {
return "((" + generate(children[0]) + ")" + name + "(" + generate(children[1]) + "))";
return "((" + generate(children[1]) + ")" + name + "(" + generate(children[2]) + "))";
}
output += data.symbol.getName() + "(";
for (int i = 0; i < children.size(); i++)
for (int i = 1; i < children.size(); i++) //children[0] is the declaration
if (i < children.size()-1)
output += generate(children[i]) + ", ";
else output += generate(children[i]);