carbon-language/carbon-lang
1
0
Fork 0
mirror of https://github.com/carbon-language/carbon-lang.git synced 2026-09-24 22:02:23 +01:00
Code Issues Packages Projects Releases 10 Wiki Activity

Define a base class for all AST nodes. (#947)

Browse Source 
Also implement code-generation to manage the resulting boilerplate.
This commit is contained in:
Geoff Romer
2021-11-16 11:54:47 -08:00
committed by GitHub
parent d854fb93cb
commit 7a5b8434c8
24 changed files with 965 additions and 543 deletions
Download Patch File Download Diff File Expand all files Collapse all files
executable_semantics/ast/statement.cpp
+15 -13
View File
@@ -12,13 +12,15 @@ namespace Carbon {
using llvm::cast;
Statement::~Statement() = default;
void Statement::PrintDepth(int depth, llvm::raw_ostream& out) const {
if (depth == 0) {
out << " ... ";
return;
}
switch (kind()) {
case Kind::Match: {
case StatementKind::Match: {
const auto& match = cast<Match>(*this);
out << "match (" << match.expression() << ") {";
if (depth < 0 || depth > 1) {
@@ -34,32 +36,32 @@ void Statement::PrintDepth(int depth, llvm::raw_ostream& out) const {
out << "}";
break;
}
case Kind::While: {
case StatementKind::While: {
const auto& while_stmt = cast<While>(*this);
out << "while (" << while_stmt.condition() << ")\n";
while_stmt.body().PrintDepth(depth - 1, out);
break;
}
case Kind::Break:
case StatementKind::Break:
out << "break;";
break;
case Kind::Continue:
case StatementKind::Continue:
out << "continue;";
break;
case Kind::VariableDefinition: {
case StatementKind::VariableDefinition: {
const auto& var = cast<VariableDefinition>(*this);
out << "var " << var.pattern() << " = " << var.init() << ";";
break;
}
case Kind::ExpressionStatement:
case StatementKind::ExpressionStatement:
out << cast<ExpressionStatement>(*this).expression() << ";";
break;
case Kind::Assign: {
case StatementKind::Assign: {
const auto& assign = cast<Assign>(*this);
out << assign.lhs() << " = " << assign.rhs() << ";";
break;
}
case Kind::If: {
case StatementKind::If: {
const auto& if_stmt = cast<If>(*this);
out << "if (" << if_stmt.condition() << ")\n";
if_stmt.then_block().PrintDepth(depth - 1, out);
@@ -69,7 +71,7 @@ void Statement::PrintDepth(int depth, llvm::raw_ostream& out) const {
}
break;
}
case Kind::Return: {
case StatementKind::Return: {
const auto& ret = cast<Return>(*this);
if (ret.is_omitted_expression()) {
out << "return;";
@@ -78,7 +80,7 @@ void Statement::PrintDepth(int depth, llvm::raw_ostream& out) const {
}
break;
}
case Kind::Block: {
case StatementKind::Block: {
const auto& block = cast<Block>(*this);
out << "{";
if (depth < 0 || depth > 1) {
@@ -96,7 +98,7 @@ void Statement::PrintDepth(int depth, llvm::raw_ostream& out) const {
}
break;
}
case Kind::Continuation: {
case StatementKind::Continuation: {
const auto& cont = cast<Continuation>(*this);
out << "continuation " << cont.continuation_variable() << " ";
if (depth < 0 || depth > 1) {
@@ -108,10 +110,10 @@ void Statement::PrintDepth(int depth, llvm::raw_ostream& out) const {
}
break;
}
case Kind::Run:
case StatementKind::Run:
out << "run " << cast<Run>(*this).argument() << ";";
break;
case Kind::Await:
case StatementKind::Await:
out << "await;";
break;
}