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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.
85 lines
2.1 KiB
C++
85 lines
2.1 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_AST_STATEMENT_H_
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#define EXECUTABLE_SEMANTICS_AST_STATEMENT_H_
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#include <list>
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#include "executable_semantics/ast/expression.h"
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namespace Carbon {
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enum class StatementKind {
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ExpressionStatement,
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Assign,
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VariableDefinition,
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If,
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Return,
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Sequence,
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Block,
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While,
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Break,
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Continue,
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Match
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};
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struct Statement {
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int line_num;
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StatementKind tag;
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union {
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Expression* exp;
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struct {
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Expression* lhs;
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Expression* rhs;
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} assign;
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struct {
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Expression* pat;
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Expression* init;
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} variable_definition;
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struct {
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Expression* cond;
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Statement* then_stmt;
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Statement* else_stmt;
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} if_stmt;
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Expression* return_stmt;
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struct {
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Statement* stmt;
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Statement* next;
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} sequence;
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struct {
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Statement* stmt;
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} block;
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struct {
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Expression* cond;
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Statement* body;
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} while_stmt;
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struct {
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Expression* exp;
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std::list<std::pair<Expression*, Statement*>>* clauses;
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} match_stmt;
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} u;
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};
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auto MakeExpStmt(int line_num, Expression* exp) -> Statement*;
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auto MakeAssign(int line_num, Expression* lhs, Expression* rhs) -> Statement*;
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auto MakeVarDef(int line_num, Expression* pat, Expression* init) -> Statement*;
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auto MakeIf(int line_num, Expression* cond, Statement* then_stmt,
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Statement* else_stmt) -> Statement*;
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auto MakeReturn(int line_num, Expression* e) -> Statement*;
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auto MakeSeq(int line_num, Statement* s1, Statement* s2) -> Statement*;
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auto MakeBlock(int line_num, Statement* s) -> Statement*;
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auto MakeWhile(int line_num, Expression* cond, Statement* body) -> Statement*;
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auto MakeBreak(int line_num) -> Statement*;
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auto MakeContinue(int line_num) -> Statement*;
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auto MakeMatch(int line_num, Expression* exp,
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std::list<std::pair<Expression*, Statement*>>* clauses)
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-> Statement*;
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void PrintStatement(Statement*, int);
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} // namespace Carbon
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#endif // EXECUTABLE_SEMANTICS_AST_STATEMENT_H_
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