Files
carbon-lang/toolchain/parse/handle_pattern_list.cpp
T
Chandler Carruth 8c64f0bfdd Add -Wmissing-prototypes and fix issues it finds. (#4019)
Most of these are places where we failed to include a header file and
simply never got an error about this. The fix is to include the header
file.

Most other cases are functions that should have been marked `static` but
were not. Finding all of these was a main motivation for me enabling the
warning despite how much work it is.

One complicating factor was that we weren't including the `handle.h` for
all the state-based handler functions. While this isn't a tiny amount of
code, it is just declarations and doesn't add any extra dependencies. It
also lets us have the checking for which functions need to be `static`
and which don't. For the `parse` library I had to add the `handle.h`
header as well, I tried to match the design of it in `check`.

I have also had to work around a bug in the warning, but given the value
it seems to be providing, that seems reasonable. I've filed the bug
upstream: https://github.com/llvm/llvm-project/issues/94138

I also had to use some hacks to work around limitations of Bazel rules
that wrap `cc_library` rules and don't expose `copts`. I filed a bug for
`cc_proto_library` specifically:
~https://github.com/bazelbuild/bazel/issues/22610~ 
https://github.com/bazelbuild/bazel/issues/4446
2024-06-04 20:04:45 +00:00

105 lines
3.8 KiB
C++

// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
#include "toolchain/parse/context.h"
#include "toolchain/parse/handle.h"
namespace Carbon::Parse {
// Handles PatternListElementAs(Implicit|Tuple).
static auto HandlePatternListElement(Context& context, State pattern_state,
State finish_state) -> void {
context.PopAndDiscardState();
context.PushState(finish_state);
context.PushState(pattern_state);
}
auto HandlePatternListElementAsImplicit(Context& context) -> void {
HandlePatternListElement(context, State::BindingPattern,
State::PatternListElementFinishAsImplicit);
}
auto HandlePatternListElementAsTuple(Context& context) -> void {
HandlePatternListElement(context, State::BindingPattern,
State::PatternListElementFinishAsTuple);
}
// Handles PatternListElementFinishAs(Implicit|Tuple).
static auto HandlePatternListElementFinish(Context& context,
Lex::TokenKind close_token,
State param_state) -> void {
auto state = context.PopState();
if (state.has_error) {
context.ReturnErrorOnState();
}
if (context.ConsumeListToken(NodeKind::PatternListComma, close_token,
state.has_error) ==
Context::ListTokenKind::Comma) {
context.PushState(param_state);
}
}
auto HandlePatternListElementFinishAsImplicit(Context& context) -> void {
HandlePatternListElementFinish(context, Lex::TokenKind::CloseSquareBracket,
State::PatternListElementAsImplicit);
}
auto HandlePatternListElementFinishAsTuple(Context& context) -> void {
HandlePatternListElementFinish(context, Lex::TokenKind::CloseParen,
State::PatternListElementAsTuple);
}
// Handles PatternListAs(Implicit|Tuple).
static auto HandlePatternList(Context& context, NodeKind node_kind,
Lex::TokenKind open_token_kind,
Lex::TokenKind close_token_kind,
State param_state, State finish_state) -> void {
context.PopAndDiscardState();
context.PushState(finish_state);
context.AddLeafNode(node_kind, context.ConsumeChecked(open_token_kind));
if (!context.PositionIs(close_token_kind)) {
context.PushState(param_state);
}
}
auto HandlePatternListAsImplicit(Context& context) -> void {
HandlePatternList(
context, NodeKind::ImplicitParamListStart,
Lex::TokenKind::OpenSquareBracket, Lex::TokenKind::CloseSquareBracket,
State::PatternListElementAsImplicit, State::PatternListFinishAsImplicit);
}
auto HandlePatternListAsTuple(Context& context) -> void {
HandlePatternList(context, NodeKind::TuplePatternStart,
Lex::TokenKind::OpenParen, Lex::TokenKind::CloseParen,
State::PatternListElementAsTuple,
State::PatternListFinishAsTuple);
}
// Handles PatternListFinishAs(Implicit|Tuple).
static auto HandlePatternListFinish(Context& context, NodeKind node_kind,
Lex::TokenKind token_kind) -> void {
auto state = context.PopState();
context.AddNode(node_kind, context.ConsumeChecked(token_kind),
state.subtree_start, state.has_error);
}
auto HandlePatternListFinishAsImplicit(Context& context) -> void {
HandlePatternListFinish(context, NodeKind::ImplicitParamList,
Lex::TokenKind::CloseSquareBracket);
}
auto HandlePatternListFinishAsTuple(Context& context) -> void {
HandlePatternListFinish(context, NodeKind::TuplePattern,
Lex::TokenKind::CloseParen);
}
} // namespace Carbon::Parse