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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.
51 lines
1.4 KiB
C++
51 lines
1.4 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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#ifndef EXECUTABLE_SEMANTICS_INTERPRETER_ACTION_H_
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#define EXECUTABLE_SEMANTICS_INTERPRETER_ACTION_H_
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#include <iostream>
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#include <vector>
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#include "executable_semantics/ast/expression.h"
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#include "executable_semantics/ast/statement.h"
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#include "executable_semantics/interpreter/cons_list.h"
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#include "executable_semantics/interpreter/value.h"
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namespace Carbon {
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enum class ActionKind {
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LValAction,
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ExpressionAction,
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StatementAction,
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ValAction,
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ExpToLValAction,
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DeleteTmpAction
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};
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struct Action {
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ActionKind tag;
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union {
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Expression* exp; // for LValAction and ExpressionAction
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Statement* stmt;
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Value* val; // for finished actions with a value (ValAction)
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Address delete_tmp;
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} u;
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int pos; // position or state of the action
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std::vector<Value*> results; // results from subexpression
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};
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void PrintAct(Action* act, std::ostream& out);
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void PrintActList(Cons<Action*>* ls, std::ostream& out);
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auto MakeExpAct(Expression* e) -> Action*;
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auto MakeLvalAct(Expression* e) -> Action*;
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auto MakeStmtAct(Statement* s) -> Action*;
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auto MakeValAct(Value* v) -> Action*;
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auto MakeExpToLvalAct() -> Action*;
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auto MakeDeleteAct(Address a) -> Action*;
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} // namespace Carbon
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#endif // EXECUTABLE_SEMANTICS_INTERPRETER_ACTION_H_
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