mirror of
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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.
61 lines
1.5 KiB
C++
61 lines
1.5 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_INTERPRETER_H_
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#define EXECUTABLE_SEMANTICS_INTERPRETER_INTERPRETER_H_
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#include <list>
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#include <utility>
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#include <vector>
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#include "executable_semantics/ast/declaration.h"
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#include "executable_semantics/interpreter/action.h"
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#include "executable_semantics/interpreter/assoc_list.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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using Env = AssocList<std::string, Address>;
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/***** Scopes *****/
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struct Scope {
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Scope(Env* e, std::list<std::string> l) : env(e), locals(std::move(l)) {}
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Env* env;
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std::list<std::string> locals;
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};
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/***** Frames and State *****/
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struct Frame {
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std::string name;
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Cons<Scope*>* scopes;
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Cons<Action*>* todo;
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Frame(std::string n, Cons<Scope*>* s, Cons<Action*>* c)
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: name(std::move(std::move(n))), scopes(s), todo(c) {}
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};
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struct State {
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Cons<Frame*>* stack;
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std::vector<Value*> heap;
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};
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extern State* state;
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void PrintEnv(Env* env);
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auto AllocateValue(Value* v) -> Address;
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auto CopyVal(Value* val, int line_num) -> Value*;
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auto ToInteger(Value* v) -> int;
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/***** Interpreters *****/
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auto InterpProgram(std::list<Declaration*>* fs) -> int;
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auto InterpExp(Env* env, Expression* e) -> Value*;
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} // namespace Carbon
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#endif // EXECUTABLE_SEMANTICS_INTERPRETER_INTERPRETER_H_
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