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Properly indent generated C++ code.

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This commit is contained in:
Stefano Sanfilippo 2015-03-05 13:55:34 +01:00
parent b0a01d2fb7
commit 25153e8a85
1 changed files with 22 additions and 8 deletions
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30
CppEmitter.cpp
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@ -28,15 +28,14 @@ using namespace monicelli;
static const std::string STATEMENT_TERMINATOR = ";\n"; static const std::string STATEMENT_TERMINATOR = ";\n";
static const std::string BLOCK = " "; static const std::string BLOCK = " ";
static const int BLOCK_SIZE = 4;
void CppEmitter::indent() { void CppEmitter::indent() {
indent_chars += BLOCK_SIZE; indent_chars += 1;
} }
void CppEmitter::dedent() { void CppEmitter::dedent() {
indent_chars -= BLOCK_SIZE; indent_chars -= 1;
} }
void CppEmitter::emitIndent() { void CppEmitter::emitIndent() {
@ -75,6 +74,7 @@ void CppEmitter::emit(Program const& program) {
void CppEmitter::emitStatements(PointerList<Statement> const& node) { void CppEmitter::emitStatements(PointerList<Statement> const& node) {
for (Statement *s: node) { for (Statement *s: node) {
emitIndent();
s->emit(this); s->emit(this);
stream << STATEMENT_TERMINATOR; stream << STATEMENT_TERMINATOR;
} }
@ -82,7 +82,9 @@ void CppEmitter::emitStatements(PointerList<Statement> const& node) {
void CppEmitter::emit(Main const& main) { void CppEmitter::emit(Main const& main) {
stream << "int main() {\n"; stream << "int main() {\n";
emitStatements(main.getBody()); indent();
emitStatements(main.getBody());
dedent();
stream << "}\n"; stream << "}\n";
} }
@ -131,6 +133,7 @@ void CppEmitter::emit(Input const& node) {
stream << "std::cout << \""; stream << "std::cout << \"";
node.getVariable().emit(this); node.getVariable().emit(this);
stream << "? \";\n"; stream << "? \";\n";
emitIndent();
stream << "std::cin >> "; stream << "std::cin >> ";
node.getVariable().emit(this); node.getVariable().emit(this);
} }
@ -147,7 +150,10 @@ void CppEmitter::emit(Assert const& node) {
void CppEmitter::emit(Loop const& loop) { void CppEmitter::emit(Loop const& loop) {
stream << "do {\n"; stream << "do {\n";
emitStatements(loop.getBody()); indent();
emitStatements(loop.getBody());
dedent();
emitIndent();
stream << "} while ("; stream << "} while (";
loop.getCondition().emit(this); loop.getCondition().emit(this);
stream << ")"; stream << ")";
@ -156,7 +162,10 @@ void CppEmitter::emit(Loop const& loop) {
void CppEmitter::emit(BranchCase const& node) { void CppEmitter::emit(BranchCase const& node) {
node.getCondition().emit(this); node.getCondition().emit(this);
stream << ") {\n"; stream << ") {\n";
emitStatements(node.getBody()); indent();
emitStatements(node.getBody());
dedent();
emitIndent();
stream << "}"; stream << "}";
} }
@ -183,7 +192,10 @@ void CppEmitter::emit(Branch const& branch) {
} }
stream << " else {\n"; stream << " else {\n";
emitStatements(*body.getElse()); indent();
emitStatements(*body.getElse());
dedent();
emitIndent();
stream << "}"; stream << "}";
} }
@ -215,7 +227,9 @@ void CppEmitter::emit(FunctionCall const& funcall) {
void CppEmitter::emit(Function const& function) { void CppEmitter::emit(Function const& function) {
emitFunctionSignature(function); emitFunctionSignature(function);
stream << " {\n"; stream << " {\n";
emitStatements(function.getBody()); indent();
emitStatements(function.getBody());
dedent();
stream << "}\n\n"; stream << "}\n\n";
} }