mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-10-04 19:11:11 +01:00
Jon Ross-PerkinsandChandler Carruth
352fec1885
Example stack:
```
1. node_stack_:
0. FunctionDefinitionStart
1. ReturnStatement -> node1
2. node_block_stack_:
0. block0
1. block1
```
Example trace output:
```
*** SemanticsParseTreeHandler::Build Begin ***
Push 0: FunctionIntroducer
Push 1: DeclaredName
Push 2: ParameterListEnd
Pop 2: ParameterListEnd
Push 2: ParameterList
Pop 2: ParameterList
Pop 0: FunctionIntroducer
AddNode block0: FunctionDeclaration()
AddNode block0: BindName(ident0, node0)
AddNode block0: FunctionDefinition(node0, block1)
Push 0: FunctionDefinitionStart
Push 1: Literal -> IntegerLiteral
AddNode block1: IntegerLiteral(int0): node_xref1
Push 2: StatementEnd
Pop 2: StatementEnd
Pop 1: any (Literal) -> node0
Push 1: ReturnStatement -> ReturnExpression
AddNode block1: ReturnExpression(node0)
Pop 0: FunctionDefinitionStart
Push 0: FunctionDefinition
*** SemanticsParseTreeHandler::Build End ***
cross_reference_irs.size == 2,
cross_references = {
node_xref0 = "xref(ir0, block0, node0)";
node_xref1 = "xref(ir0, block0, node1)";
},
identifiers = {
ident0 = "Foo";
},
integer_literals = {
int0 = 0;
},
node_blocks = {
block0 = {
node0 = FunctionDeclaration();
node1 = BindName(ident0, node0);
node2 = FunctionDefinition(node0, block1);
},
block1 = {
node0 = IntegerLiteral(int0): node_xref1;
node1 = ReturnExpression(node0);
},
}
```
Co-authored-by: Chandler Carruth <chandlerc@gmail.com>
57 lines
1.6 KiB
C++
57 lines
1.6 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 CARBON_COMMON_VLOG_INTERNAL_H_
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#define CARBON_COMMON_VLOG_INTERNAL_H_
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#include <cstdlib>
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#include "llvm/Support/raw_ostream.h"
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namespace Carbon::Internal {
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// Wraps a stream and exiting for fatal errors. Should only be used by check.h
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// macros.
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class VLoggingStream {
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public:
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// Internal type used in macros to dispatch to the `operator|` overload.
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struct Helper {};
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VLoggingStream(llvm::raw_ostream* stream)
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// Prefix the buffer with the current bug report message.
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: stream_(stream) {}
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~VLoggingStream() = default;
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// If the bool cast occurs, it's because the condition is false. This supports
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// && short-circuiting the creation of ExitingStream.
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explicit operator bool() const { return true; }
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// Forward output to llvm::errs.
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template <typename T>
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auto operator<<(const T& message) -> VLoggingStream& {
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*stream_ << message;
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return *this;
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}
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// Low-precedence binary operator overload used in vlog.h macros.
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friend auto operator|(Helper /*helper*/, VLoggingStream& /*stream*/) -> void {
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}
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private:
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[[noreturn]] auto Done() -> void;
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llvm::raw_ostream* stream_;
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};
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} // namespace Carbon::Internal
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// Raw logging stream. This should be used when building forms of vlog
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// macros.
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#define CARBON_VLOG_INTERNAL_STREAM(stream) \
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Carbon::Internal::VLoggingStream::Helper() | \
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Carbon::Internal::VLoggingStream(stream)
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#endif // CARBON_COMMON_VLOG_INTERNAL_H_
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