mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 22:02:23 +01:00
Jon Meow
6e5070de18
Notes versus what jsiek wrote:
- This adopts Bazel for building.
- System-local versions of bison/flex are used. I found https://github.com/jmillikin/rules_bison, but those print a lot of warnings (things like -Wsign-compare IIRC) which makes builds hard to read. Plus I think the underlying bison_cc_library rule didn't work, so this would really only get a hermetic bison/flex build (helpful, but didn't seem worth more time).
- I'm adding in a .bazeliskrc to push a somewhat more standard choice of bazel versions. I noticed I was getting unstable versions by default, possible Google-specific, but seemed good to include.
- The `-lpthread` kludge.
- Turn all of the examples into golden tests.
- Including adding a golden test rule.
- Fixed various style guide issues. For example:
- Fixing function names to be CamelCase instead of snake_case (https://google.github.io/styleguide/cppguide.html#Function_Names)
- Removed exception use (https://google.github.io/styleguide/cppguide.html#Exceptions)
- File name fixes (https://github.com/carbon-language/carbon-lang/blob/trunk/docs/project/cpp_style_guide.md#file-names)
- Dropped `using` of `std` names -- I believe this is preferred (maybe we should be explicit about this in the Carbon style guide)
- Switched `enum` uses to `enum class` for ease-of-identification.
- Spent some time breaking out files to hopefully be easier to read/edit pieces, and understand relations between structs.
- Added `code requires` to `syntax.ypp` to address include issues
Possibly other things -- but the fundamental structure is, I believe, unchanged. I put in the golden tests pretty early to ensure I wasn't mutating output/results.
109 lines
2.4 KiB
C++
109 lines
2.4 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#include <iostream>
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#include <iterator>
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#include <map>
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#include <optional>
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#include <utility>
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#include <vector>
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#include "executable_semantics/ast/expression.h"
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#include "executable_semantics/ast/function_definition.h"
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#include "executable_semantics/interpreter/interpreter.h"
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#include "executable_semantics/interpreter/typecheck.h"
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namespace Carbon {
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void PrintAct(Action* act, std::ostream& out) {
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switch (act->tag) {
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case ActionKind::DeleteTmpAction:
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std::cout << "delete_tmp(" << act->u.delete_tmp << ")";
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break;
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case ActionKind::ExpToLValAction:
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out << "exp=>lval";
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break;
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case ActionKind::LValAction:
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case ActionKind::ExpressionAction:
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PrintExp(act->u.exp);
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break;
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case ActionKind::StatementAction:
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PrintStatement(act->u.stmt, 1);
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break;
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case ActionKind::ValAction:
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PrintValue(act->u.val, out);
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break;
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}
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out << "<" << act->pos << ">";
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if (act->results.size() > 0) {
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out << "(";
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for (auto& result : act->results) {
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if (result) {
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PrintValue(result, out);
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}
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out << ",";
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}
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out << ")";
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}
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}
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void PrintActList(Cons<Action*>* ls, std::ostream& out) {
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if (ls) {
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PrintAct(ls->curr, out);
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if (ls->next) {
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out << " :: ";
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PrintActList(ls->next, out);
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}
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}
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}
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auto MakeExpAct(Expression* e) -> Action* {
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auto* act = new Action();
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act->tag = ActionKind::ExpressionAction;
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act->u.exp = e;
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act->pos = -1;
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return act;
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}
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auto MakeLvalAct(Expression* e) -> Action* {
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auto* act = new Action();
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act->tag = ActionKind::LValAction;
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act->u.exp = e;
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act->pos = -1;
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return act;
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}
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auto MakeStmtAct(Statement* s) -> Action* {
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auto* act = new Action();
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act->tag = ActionKind::StatementAction;
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act->u.stmt = s;
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act->pos = -1;
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return act;
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}
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auto MakeValAct(Value* v) -> Action* {
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auto* act = new Action();
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act->tag = ActionKind::ValAction;
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act->u.val = v;
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act->pos = -1;
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return act;
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}
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auto MakeExpToLvalAct() -> Action* {
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auto* act = new Action();
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act->tag = ActionKind::ExpToLValAction;
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act->pos = -1;
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return act;
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}
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auto MakeDeleteAct(Address a) -> Action* {
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auto* act = new Action();
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act->tag = ActionKind::DeleteTmpAction;
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act->pos = -1;
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act->u.delete_tmp = a;
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return act;
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}
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} // namespace Carbon
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