mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-10-03 22:02:51 +01:00
Jon Ross-Perkins
d51ca271af
I'm thinking about how to handle multiple files, and I think the current IRFactory is useful as a file-focused thing. So shifting/renaming accordingly. (doing this in its own PR to make the history a little cleaner for git's move detection)
92 lines
3.1 KiB
C++
92 lines
3.1 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
|
|
|
|
#ifndef CARBON_TOOLCHAIN_SEMANTICS_SEMANTICS_PARSE_TREE_HANDLER_H_
|
|
#define CARBON_TOOLCHAIN_SEMANTICS_SEMANTICS_PARSE_TREE_HANDLER_H_
|
|
|
|
#include "common/check.h"
|
|
#include "toolchain/parser/parse_tree.h"
|
|
#include "toolchain/semantics/semantics_ir.h"
|
|
|
|
namespace Carbon {
|
|
|
|
// Handles processing of a ParseTree for semantics.
|
|
class SemanticsParseTreeHandler {
|
|
public:
|
|
// Stores references for work.
|
|
explicit SemanticsParseTreeHandler(const TokenizedBuffer& tokens,
|
|
const ParseTree& parse_tree,
|
|
SemanticsIR& semantics)
|
|
: tokens_(&tokens), parse_tree_(&parse_tree), semantics_(&semantics) {}
|
|
|
|
// Outputs the ParseTree information into SemanticsIR.
|
|
auto Build() -> void;
|
|
|
|
private:
|
|
struct TraversalStackEntry {
|
|
ParseTree::Node parse_node;
|
|
llvm::Optional<SemanticsNodeId> result_id;
|
|
};
|
|
|
|
auto Push(ParseTree::Node parse_node) -> void {
|
|
node_stack_.push_back({parse_node, llvm::None});
|
|
}
|
|
|
|
auto Push(ParseTree::Node parse_node, SemanticsNode node) -> void {
|
|
auto node_id = semantics_->AddNode(node);
|
|
node_stack_.push_back({parse_node, node_id});
|
|
}
|
|
|
|
auto Pop(ParseNodeKind pop_parse_kind) -> void {
|
|
auto back = node_stack_.back();
|
|
auto parse_kind = parse_tree_->node_kind(back.parse_node);
|
|
CARBON_CHECK(parse_kind == pop_parse_kind)
|
|
<< "Expected " << pop_parse_kind << ", found " << parse_kind;
|
|
CARBON_CHECK(!back.result_id) << "Expected no result ID on " << parse_kind;
|
|
node_stack_.pop_back();
|
|
}
|
|
|
|
auto PopWithResult() -> SemanticsNodeId {
|
|
auto back = node_stack_.back();
|
|
auto node_id = *back.result_id;
|
|
node_stack_.pop_back();
|
|
return node_id;
|
|
}
|
|
|
|
auto PopWithResult(ParseNodeKind pop_parse_kind) -> SemanticsNodeId {
|
|
auto back = node_stack_.back();
|
|
auto parse_kind = parse_tree_->node_kind(back.parse_node);
|
|
auto node_id = *back.result_id;
|
|
CARBON_CHECK(parse_kind == pop_parse_kind)
|
|
<< "Expected " << pop_parse_kind << ", found " << parse_kind;
|
|
node_stack_.pop_back();
|
|
return node_id;
|
|
}
|
|
|
|
// Parse node handlers.
|
|
auto HandleDeclaredName(ParseTree::Node parse_node) -> void;
|
|
auto HandleFunctionDefinition(ParseTree::Node parse_node) -> void;
|
|
auto HandleFunctionDefinitionStart(ParseTree::Node parse_node) -> void;
|
|
auto HandleInfixOperator(ParseTree::Node parse_node) -> void;
|
|
auto HandleLiteral(ParseTree::Node parse_node) -> void;
|
|
auto HandleParameterList(ParseTree::Node parse_node) -> void;
|
|
auto HandleReturnStatement(ParseTree::Node parse_node) -> void;
|
|
|
|
// Tokens for getting data on literals.
|
|
const TokenizedBuffer* tokens_;
|
|
|
|
// The file's parse tree.
|
|
const ParseTree* parse_tree_;
|
|
|
|
// The SemanticsIR being added to.
|
|
SemanticsIR* semantics_;
|
|
|
|
// The stack during Build. Will contain file-level parse nodes on return.
|
|
llvm::SmallVector<TraversalStackEntry> node_stack_;
|
|
};
|
|
|
|
} // namespace Carbon
|
|
|
|
#endif // CARBON_TOOLCHAIN_SEMANTICS_SEMANTICS_PARSE_TREE_HANDLER_H_
|