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Jon Ross-Perkins
a23f15e901
This is how I'm interpreting discussion:
- Basic elements are getting set to an ID.
- SetName exists to assign a name (which can then be referred to later with an identifier expression) to an ID.
- Expressions are broken down into a series of operations which operate on IDs.
So with something like the last test:
```
fn Main() { return 12 + 34; }
```
This becomes:
```
Function(%0,
{IntegerLiteral(%3, 12),
IntegerLiteral(%2, 34),
BinaryOperator(%1, +, %3, %2),
Return(%1),
})
SetName(`Main`, %0)
```
Note I'm treating blocks as fairly equal to the top of a file now, and basically eliminating boundaries between things. That's because we have discussed also supporting code like:
```
fn Foo() {
fn Bar() {}
Bar();
}
```
Here a declaration of a function is occurring inside a code block, so it felt like eliminating the difference was the best choice.
I know you'd commented on the separation of nodes to individual files before; I still think we're going to have a lot of different types of nodes, and so separating them out into individual files makes them easier to browse.
45 lines
1.2 KiB
C++
45 lines
1.2 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_TOOLCHAIN_SEMANTICS_SEMANTICS_IR_H_
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#define CARBON_TOOLCHAIN_SEMANTICS_SEMANTICS_IR_H_
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#include "llvm/ADT/SmallVector.h"
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#include "toolchain/parser/parse_tree.h"
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#include "toolchain/semantics/node_store.h"
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namespace Carbon::Testing {
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class SemanticsIRForTest;
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} // namespace Carbon::Testing
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namespace Carbon {
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// Provides semantic analysis on a ParseTree.
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class SemanticsIR {
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public:
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// File-level declarations.
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auto root_block() const -> llvm::ArrayRef<Semantics::NodeRef> {
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return root_block_;
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}
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// Prints the node information.
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void Print(llvm::raw_ostream& out, Semantics::NodeRef node_ref) const;
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private:
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friend class SemanticsIRFactory;
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friend class Testing::SemanticsIRForTest;
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explicit SemanticsIR(const ParseTree& parse_tree)
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: parse_tree_(&parse_tree) {}
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Semantics::NodeStore nodes_;
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llvm::SmallVector<Semantics::NodeRef, 0> root_block_;
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const ParseTree* parse_tree_;
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};
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} // namespace Carbon
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#endif // CARBON_TOOLCHAIN_SEMANTICS_SEMANTICS_IR_H_
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