mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-10-02 12:45:49 +01:00
Richard Smith
4fa71e32f5
Support for global variables is still missing; they're a bit more tricky because they use a pattern to introduce their name. Prior to this change, explorer heavily relied on name comparisons to determine whether two declarations declare the same entity. Some of those instances are fixed in this PR, but more remain to be fixed, and some TODOs are added for some harder-to-fix instances.
1000 lines
30 KiB
C++
1000 lines
30 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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#include "common/fuzzing/proto_to_carbon.h"
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#include <string_view>
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#include "common/fuzzing/carbon.pb.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/Support/raw_ostream.h"
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namespace Carbon {
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static auto ExpressionToCarbon(const Fuzzing::Expression& expression,
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llvm::raw_ostream& out) -> void;
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static auto PatternToCarbon(const Fuzzing::Pattern& pattern,
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llvm::raw_ostream& out) -> void;
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static auto StatementToCarbon(const Fuzzing::Statement& statement,
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llvm::raw_ostream& out) -> void;
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static auto DeclarationToCarbon(const Fuzzing::Declaration& declaration,
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llvm::raw_ostream& out) -> void;
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// Produces a valid Carbon identifier, which must match the regex
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// `[A-Za-z_][A-Za-z0-9_]*`. In the case when `s` is generated by the
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// fuzzing framework, it might contain invalid/non-printable characters.
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static auto IdentifierToCarbon(std::string_view s, llvm::raw_ostream& out)
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-> void {
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if (s.empty()) {
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out << "EmptyIdentifier";
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} else {
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if (!llvm::isAlpha(s[0]) && s[0] != '_') {
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// Ensures that identifier starts with a valid character.
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out << 'x';
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}
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for (const char c : s) {
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if (llvm::isAlnum(c) || c == '_') {
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out << c;
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} else {
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out << llvm::toHex(c);
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}
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}
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}
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}
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static auto StringLiteralToCarbon(std::string_view s, llvm::raw_ostream& out) {
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out << '"';
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out.write_escaped(s, /*UseHexEscapes=*/true);
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out << '"';
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}
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static auto LibraryNameToCarbon(const Fuzzing::LibraryName& library,
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llvm::raw_ostream& out) -> void {
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IdentifierToCarbon(library.package_name(), out);
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// Path is optional.
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if (library.has_path()) {
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out << " library ";
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// library.path() is a string literal.
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StringLiteralToCarbon(library.path(), out);
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}
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}
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static auto PrefixUnaryOperatorToCarbon(std::string_view op,
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const Fuzzing::Expression& arg,
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llvm::raw_ostream& out) -> void {
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out << op;
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ExpressionToCarbon(arg, out);
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}
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static auto PostfixUnaryOperatorToCarbon(const Fuzzing::Expression& arg,
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std::string_view op,
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llvm::raw_ostream& out) -> void {
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ExpressionToCarbon(arg, out);
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out << op;
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}
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static auto BinaryOperatorToCarbon(const Fuzzing::Expression& lhs,
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std::string_view op,
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const Fuzzing::Expression& rhs,
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llvm::raw_ostream& out) -> void {
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ExpressionToCarbon(lhs, out);
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out << op;
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ExpressionToCarbon(rhs, out);
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}
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static auto OperatorToCarbon(const Fuzzing::OperatorExpression& operator_expr,
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llvm::raw_ostream& out) -> void {
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const Fuzzing::Expression& arg0 =
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!operator_expr.arguments().empty()
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? operator_expr.arguments(0)
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: Fuzzing::Expression::default_instance();
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const Fuzzing::Expression& arg1 =
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operator_expr.arguments().size() > 1
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? operator_expr.arguments(1)
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: Fuzzing::Expression::default_instance();
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out << "(";
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switch (operator_expr.op()) {
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case Fuzzing::OperatorExpression::UnknownOperator:
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// `-` is an arbitrary default to avoid getting invalid syntax.
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PrefixUnaryOperatorToCarbon("-", arg0, out);
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break;
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case Fuzzing::OperatorExpression::AddressOf:
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PrefixUnaryOperatorToCarbon("&", arg0, out);
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break;
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case Fuzzing::OperatorExpression::As:
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BinaryOperatorToCarbon(arg0, " as ", arg1, out);
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break;
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case Fuzzing::OperatorExpression::Deref:
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PrefixUnaryOperatorToCarbon("*", arg0, out);
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break;
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case Fuzzing::OperatorExpression::Mul:
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BinaryOperatorToCarbon(arg0, " * ", arg1, out);
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break;
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case Fuzzing::OperatorExpression::Div:
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BinaryOperatorToCarbon(arg0, " / ", arg1, out);
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break;
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case Fuzzing::OperatorExpression::Mod:
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BinaryOperatorToCarbon(arg0, " % ", arg1, out);
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break;
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case Fuzzing::OperatorExpression::Ptr:
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PostfixUnaryOperatorToCarbon(arg0, "*", out);
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break;
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case Fuzzing::OperatorExpression::Neg:
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PrefixUnaryOperatorToCarbon("-", arg0, out);
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break;
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case Fuzzing::OperatorExpression::Sub:
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BinaryOperatorToCarbon(arg0, " - ", arg1, out);
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break;
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case Fuzzing::OperatorExpression::Not:
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// Needs a space to 'unglue' from the operand.
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PrefixUnaryOperatorToCarbon("not ", arg0, out);
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break;
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case Fuzzing::OperatorExpression::Add:
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BinaryOperatorToCarbon(arg0, " + ", arg1, out);
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break;
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case Fuzzing::OperatorExpression::And:
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BinaryOperatorToCarbon(arg0, " and ", arg1, out);
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break;
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case Fuzzing::OperatorExpression::Eq:
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BinaryOperatorToCarbon(arg0, " == ", arg1, out);
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break;
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case Fuzzing::OperatorExpression::Less:
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BinaryOperatorToCarbon(arg0, " < ", arg1, out);
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break;
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case Fuzzing::OperatorExpression::LessEq:
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BinaryOperatorToCarbon(arg0, " <= ", arg1, out);
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break;
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case Fuzzing::OperatorExpression::GreaterEq:
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BinaryOperatorToCarbon(arg0, " >= ", arg1, out);
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break;
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case Fuzzing::OperatorExpression::Greater:
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BinaryOperatorToCarbon(arg0, " > ", arg1, out);
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break;
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case Fuzzing::OperatorExpression::Or:
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BinaryOperatorToCarbon(arg0, " or ", arg1, out);
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break;
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case Fuzzing::OperatorExpression::Complement:
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PrefixUnaryOperatorToCarbon("^", arg0, out);
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break;
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case Fuzzing::OperatorExpression::BitwiseAnd:
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BinaryOperatorToCarbon(arg0, " & ", arg1, out);
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break;
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case Fuzzing::OperatorExpression::BitwiseOr:
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BinaryOperatorToCarbon(arg0, " | ", arg1, out);
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break;
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case Fuzzing::OperatorExpression::BitwiseXor:
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BinaryOperatorToCarbon(arg0, " ^ ", arg1, out);
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break;
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case Fuzzing::OperatorExpression::BitShiftLeft:
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BinaryOperatorToCarbon(arg0, " << ", arg1, out);
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break;
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case Fuzzing::OperatorExpression::BitShiftRight:
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BinaryOperatorToCarbon(arg0, " >> ", arg1, out);
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break;
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case Fuzzing::OperatorExpression::NotEq:
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BinaryOperatorToCarbon(arg0, " != ", arg1, out);
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break;
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}
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out << ")";
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}
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static auto FieldInitializerToCarbon(const Fuzzing::FieldInitializer& field,
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std::string_view separator,
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llvm::raw_ostream& out) -> void {
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out << ".";
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IdentifierToCarbon(field.name(), out);
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out << " " << separator << " ";
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ExpressionToCarbon(field.expression(), out);
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}
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static auto TupleLiteralExpressionToCarbon(
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const Fuzzing::TupleLiteralExpression& tuple_literal,
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llvm::raw_ostream& out) -> void {
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out << "(";
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llvm::ListSeparator sep;
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for (const auto& field : tuple_literal.fields()) {
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out << sep;
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ExpressionToCarbon(field, out);
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}
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if (tuple_literal.fields_size() == 1) {
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// Adding a trailing comma so that generated source will be parsed as a
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// tuple expression. See docs/design/tuples.md.
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out << ", ";
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}
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out << ")";
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}
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static auto ExpressionToCarbon(const Fuzzing::Expression& expression,
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llvm::raw_ostream& out) -> void {
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switch (expression.kind_case()) {
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case Fuzzing::Expression::KIND_NOT_SET:
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// Arbitrary default for missing expressions to avoid invalid syntax.
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out << "true";
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break;
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case Fuzzing::Expression::kCall: {
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const auto& call = expression.call();
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ExpressionToCarbon(call.function(), out);
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if (call.argument().kind_case() == Fuzzing::Expression::kTupleLiteral) {
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TupleLiteralExpressionToCarbon(call.argument().tuple_literal(), out);
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} else {
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out << "(";
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ExpressionToCarbon(call.argument(), out);
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out << ")";
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}
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break;
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}
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case Fuzzing::Expression::kFunctionType: {
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const auto& fun_type = expression.function_type();
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out << "__Fn";
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TupleLiteralExpressionToCarbon(fun_type.parameter(), out);
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out << " -> ";
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ExpressionToCarbon(fun_type.return_type(), out);
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break;
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}
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case Fuzzing::Expression::kSimpleMemberAccess: {
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const auto& simple_member_access = expression.simple_member_access();
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ExpressionToCarbon(simple_member_access.object(), out);
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out << ".";
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IdentifierToCarbon(simple_member_access.field(), out);
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break;
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}
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case Fuzzing::Expression::kCompoundMemberAccess: {
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const auto& simple_member_access = expression.compound_member_access();
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ExpressionToCarbon(simple_member_access.object(), out);
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out << ".(";
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ExpressionToCarbon(simple_member_access.path(), out);
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out << ")";
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break;
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}
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case Fuzzing::Expression::kIndex: {
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const auto& index = expression.index();
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ExpressionToCarbon(index.object(), out);
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out << "[";
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ExpressionToCarbon(index.offset(), out);
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out << "]";
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break;
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}
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case Fuzzing::Expression::kOperator:
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OperatorToCarbon(expression.operator_(), out);
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break;
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case Fuzzing::Expression::kTupleLiteral: {
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TupleLiteralExpressionToCarbon(expression.tuple_literal(), out);
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break;
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}
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case Fuzzing::Expression::kStructLiteral: {
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const auto& struct_literal = expression.struct_literal();
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out << "{";
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llvm::ListSeparator sep;
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for (const auto& field : struct_literal.fields()) {
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out << sep;
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FieldInitializerToCarbon(field, "=", out);
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}
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out << "}";
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break;
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}
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case Fuzzing::Expression::kStructTypeLiteral: {
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const auto& struct_type_literal = expression.struct_type_literal();
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out << "{";
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llvm::ListSeparator sep;
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for (const auto& field : struct_type_literal.fields()) {
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out << sep;
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FieldInitializerToCarbon(field, ":", out);
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}
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out << "}";
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break;
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}
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case Fuzzing::Expression::kIdentifier: {
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const auto& identifier = expression.identifier();
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IdentifierToCarbon(identifier.name(), out);
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break;
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}
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case Fuzzing::Expression::kDesignator: {
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const auto& designator = expression.designator();
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out << ".";
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IdentifierToCarbon(designator.name(), out);
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break;
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}
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case Fuzzing::Expression::kIfExpression: {
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const auto& if_expression = expression.if_expression();
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out << "if ";
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ExpressionToCarbon(if_expression.condition(), out);
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out << " then ";
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ExpressionToCarbon(if_expression.then_expression(), out);
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out << " else ";
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ExpressionToCarbon(if_expression.else_expression(), out);
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break;
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}
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case Fuzzing::Expression::kBoolTypeLiteral:
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out << "bool";
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break;
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case Fuzzing::Expression::kBoolLiteral: {
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const auto& bool_literal = expression.bool_literal();
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out << (bool_literal.value() ? "true" : "false");
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break;
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}
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case Fuzzing::Expression::kIntTypeLiteral:
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out << "i32";
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break;
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case Fuzzing::Expression::kIntLiteral: {
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out << expression.int_literal().value();
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break;
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}
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case Fuzzing::Expression::kStringLiteral:
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StringLiteralToCarbon(expression.string_literal().value(), out);
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break;
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case Fuzzing::Expression::kStringTypeLiteral:
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out << "String";
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break;
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case Fuzzing::Expression::kContinuationTypeLiteral:
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out << "__Continuation";
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break;
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case Fuzzing::Expression::kTypeTypeLiteral:
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out << "type";
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break;
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case Fuzzing::Expression::kUnimplementedExpression:
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// Not really supported.
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// This is an arbitrary default to avoid getting invalid syntax.
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out << "1 __unimplemented_example_infix 2";
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break;
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case Fuzzing::Expression::kArrayTypeLiteral: {
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const Fuzzing::ArrayTypeLiteral& array_literal =
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expression.array_type_literal();
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out << "[";
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ExpressionToCarbon(array_literal.element_type(), out);
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out << "; ";
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ExpressionToCarbon(array_literal.size(), out);
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out << "]";
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break;
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}
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case Fuzzing::Expression::kWhere: {
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const Fuzzing::WhereExpression& where = expression.where();
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ExpressionToCarbon(where.base(), out);
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out << " where ";
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llvm::ListSeparator sep(" and ");
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for (const auto& clause : where.clauses()) {
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out << sep;
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switch (clause.kind_case()) {
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case Fuzzing::WhereClause::kIs:
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ExpressionToCarbon(clause.is().type(), out);
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out << " is ";
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ExpressionToCarbon(clause.is().constraint(), out);
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break;
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case Fuzzing::WhereClause::kEquals:
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ExpressionToCarbon(clause.equals().lhs(), out);
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out << " == ";
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ExpressionToCarbon(clause.equals().rhs(), out);
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break;
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case Fuzzing::WhereClause::kRewrite:
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out << "." << clause.rewrite().member_name() << " = ";
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ExpressionToCarbon(clause.rewrite().replacement(), out);
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break;
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case Fuzzing::WhereClause::KIND_NOT_SET:
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// Arbitrary default to avoid invalid syntax.
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out << ".Self == .Self";
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break;
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}
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}
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break;
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}
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}
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}
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static auto BindingPatternToCarbon(const Fuzzing::BindingPattern& pattern,
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llvm::raw_ostream& out) -> void {
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IdentifierToCarbon(pattern.name(), out);
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out << ": ";
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PatternToCarbon(pattern.type(), out);
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}
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static auto GenericBindingToCarbon(
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const Fuzzing::GenericBinding& generic_binding, llvm::raw_ostream& out) {
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IdentifierToCarbon(generic_binding.name(), out);
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out << ":! ";
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ExpressionToCarbon(generic_binding.type(), out);
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}
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static auto TuplePatternToCarbon(const Fuzzing::TuplePattern& tuple_pattern,
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llvm::raw_ostream& out) -> void {
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out << "(";
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llvm::ListSeparator sep;
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for (const auto& field : tuple_pattern.fields()) {
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out << sep;
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PatternToCarbon(field, out);
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}
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if (tuple_pattern.fields_size() == 1) {
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// Adding a trailing comma so that generated source will be parsed as a
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// tuple pattern expression. See docs/design/tuples.md.
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out << ", ";
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}
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out << ")";
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}
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static auto PatternToCarbon(const Fuzzing::Pattern& pattern,
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llvm::raw_ostream& out) -> void {
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switch (pattern.kind_case()) {
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case Fuzzing::Pattern::KIND_NOT_SET:
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// Arbitrary default to avoid getting invalid syntax.
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out << "auto";
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break;
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case Fuzzing::Pattern::kBindingPattern:
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BindingPatternToCarbon(pattern.binding_pattern(), out);
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break;
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case Fuzzing::Pattern::kTuplePattern:
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TuplePatternToCarbon(pattern.tuple_pattern(), out);
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break;
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case Fuzzing::Pattern::kAlternativePattern: {
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const auto& alternative_pattern = pattern.alternative_pattern();
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ExpressionToCarbon(alternative_pattern.choice_type(), out);
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out << ".";
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IdentifierToCarbon(alternative_pattern.alternative_name(), out);
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TuplePatternToCarbon(alternative_pattern.arguments(), out);
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break;
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}
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// Arbitrary expression.
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case Fuzzing::Pattern::kExpressionPattern: {
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const auto& expression_pattern = pattern.expression_pattern();
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ExpressionToCarbon(expression_pattern.expression(), out);
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break;
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}
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case Fuzzing::Pattern::kAutoPattern:
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out << "auto";
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break;
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case Fuzzing::Pattern::kVarPattern:
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out << "var ";
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PatternToCarbon(pattern.var_pattern().pattern(), out);
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break;
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case Fuzzing::Pattern::kGenericBinding:
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GenericBindingToCarbon(pattern.generic_binding(), out);
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break;
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case Fuzzing::Pattern::kAddrPattern:
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out << "addr ";
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BindingPatternToCarbon(pattern.addr_pattern().binding_pattern(), out);
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break;
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}
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}
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static auto BlockStatementToCarbon(const Fuzzing::BlockStatement& block,
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llvm::raw_ostream& out) -> void {
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out << "{\n";
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for (const auto& statement : block.statements()) {
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StatementToCarbon(statement, out);
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out << "\n";
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}
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out << "}\n";
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}
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static auto StatementToCarbon(const Fuzzing::Statement& statement,
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llvm::raw_ostream& out) -> void {
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switch (statement.kind_case()) {
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case Fuzzing::Statement::KIND_NOT_SET:
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// Arbitrary default to avoid getting invalid syntax.
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out << "true;\n";
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|
break;
|
|
|
|
case Fuzzing::Statement::kExpressionStatement: {
|
|
const auto& expression_statement = statement.expression_statement();
|
|
ExpressionToCarbon(expression_statement.expression(), out);
|
|
out << ";";
|
|
break;
|
|
}
|
|
|
|
case Fuzzing::Statement::kAssign: {
|
|
const auto& assign_statement = statement.assign();
|
|
ExpressionToCarbon(assign_statement.lhs(), out);
|
|
switch (assign_statement.op()) {
|
|
case Fuzzing::AssignStatement::Plain:
|
|
out << " = ";
|
|
break;
|
|
case Fuzzing::AssignStatement::Add:
|
|
out << " += ";
|
|
break;
|
|
case Fuzzing::AssignStatement::And:
|
|
out << " &= ";
|
|
break;
|
|
case Fuzzing::AssignStatement::Div:
|
|
out << " /= ";
|
|
break;
|
|
case Fuzzing::AssignStatement::Mod:
|
|
out << " %= ";
|
|
break;
|
|
case Fuzzing::AssignStatement::Mul:
|
|
out << " *= ";
|
|
break;
|
|
case Fuzzing::AssignStatement::Or:
|
|
out << " |= ";
|
|
break;
|
|
case Fuzzing::AssignStatement::ShiftLeft:
|
|
out << " <<= ";
|
|
break;
|
|
case Fuzzing::AssignStatement::ShiftRight:
|
|
out << " >>= ";
|
|
break;
|
|
case Fuzzing::AssignStatement::Sub:
|
|
out << " -= ";
|
|
break;
|
|
case Fuzzing::AssignStatement::Xor:
|
|
out << " ^= ";
|
|
break;
|
|
}
|
|
ExpressionToCarbon(assign_statement.rhs(), out);
|
|
out << ";";
|
|
break;
|
|
}
|
|
|
|
case Fuzzing::Statement::kIncDec: {
|
|
const auto& inc_dec_statement = statement.inc_dec();
|
|
out << (inc_dec_statement.is_increment() ? "++" : "--");
|
|
ExpressionToCarbon(inc_dec_statement.operand(), out);
|
|
out << ";";
|
|
break;
|
|
}
|
|
|
|
case Fuzzing::Statement::kVariableDefinition: {
|
|
const auto& def = statement.variable_definition();
|
|
if (def.is_returned()) {
|
|
out << "returned ";
|
|
}
|
|
out << "var ";
|
|
PatternToCarbon(def.pattern(), out);
|
|
if (def.has_init()) {
|
|
out << " = ";
|
|
ExpressionToCarbon(def.init(), out);
|
|
}
|
|
out << ";";
|
|
break;
|
|
}
|
|
|
|
case Fuzzing::Statement::kIfStatement: {
|
|
const auto& if_statement = statement.if_statement();
|
|
out << "if (";
|
|
ExpressionToCarbon(if_statement.condition(), out);
|
|
out << ") ";
|
|
BlockStatementToCarbon(if_statement.then_block(), out);
|
|
// `else` is optional.
|
|
if (if_statement.has_else_block()) {
|
|
out << " else ";
|
|
BlockStatementToCarbon(if_statement.else_block(), out);
|
|
}
|
|
break;
|
|
}
|
|
|
|
case Fuzzing::Statement::kReturnVarStatement: {
|
|
out << "return var;";
|
|
break;
|
|
}
|
|
|
|
case Fuzzing::Statement::kReturnExpressionStatement: {
|
|
const auto& ret = statement.return_expression_statement();
|
|
out << "return";
|
|
if (!ret.is_omitted_expression()) {
|
|
out << " ";
|
|
ExpressionToCarbon(ret.expression(), out);
|
|
}
|
|
out << ";";
|
|
break;
|
|
}
|
|
|
|
case Fuzzing::Statement::kBlock:
|
|
BlockStatementToCarbon(statement.block(), out);
|
|
break;
|
|
|
|
case Fuzzing::Statement::kWhileStatement: {
|
|
const auto& while_statement = statement.while_statement();
|
|
out << "while (";
|
|
ExpressionToCarbon(while_statement.condition(), out);
|
|
out << ") ";
|
|
BlockStatementToCarbon(while_statement.body(), out);
|
|
break;
|
|
}
|
|
case Fuzzing::Statement::kForStatement: {
|
|
const auto& for_statement = statement.for_statement();
|
|
out << "for (";
|
|
BindingPatternToCarbon(for_statement.var_decl(), out);
|
|
out << " in ";
|
|
ExpressionToCarbon(for_statement.target(), out);
|
|
out << ") ";
|
|
BlockStatementToCarbon(for_statement.body(), out);
|
|
break;
|
|
}
|
|
|
|
case Fuzzing::Statement::kMatch: {
|
|
const auto& match = statement.match();
|
|
out << "match (";
|
|
ExpressionToCarbon(match.expression(), out);
|
|
out << ") {";
|
|
for (const auto& clause : match.clauses()) {
|
|
if (clause.is_default()) {
|
|
out << "default";
|
|
} else {
|
|
out << "case ";
|
|
PatternToCarbon(clause.pattern(), out);
|
|
}
|
|
out << " => ";
|
|
StatementToCarbon(clause.statement(), out);
|
|
}
|
|
out << "}";
|
|
break;
|
|
}
|
|
|
|
case Fuzzing::Statement::kContinuation: {
|
|
const auto& continuation = statement.continuation();
|
|
out << "__continuation ";
|
|
IdentifierToCarbon(continuation.name(), out);
|
|
BlockStatementToCarbon(continuation.body(), out);
|
|
break;
|
|
}
|
|
|
|
case Fuzzing::Statement::kRun: {
|
|
const auto& run = statement.run();
|
|
out << "__run ";
|
|
ExpressionToCarbon(run.argument(), out);
|
|
out << ";";
|
|
break;
|
|
}
|
|
|
|
case Fuzzing::Statement::kAwaitStatement:
|
|
out << "__await;";
|
|
break;
|
|
|
|
case Fuzzing::Statement::kBreakStatement:
|
|
out << "break;";
|
|
break;
|
|
|
|
case Fuzzing::Statement::kContinueStatement:
|
|
out << "continue;";
|
|
break;
|
|
}
|
|
}
|
|
|
|
static auto ReturnTermToCarbon(const Fuzzing::ReturnTerm& return_term,
|
|
llvm::raw_ostream& out) -> void {
|
|
switch (return_term.kind()) {
|
|
case Fuzzing::ReturnTerm::UnknownReturnKind:
|
|
case Fuzzing::ReturnTerm::Omitted:
|
|
break;
|
|
case Fuzzing::ReturnTerm::Auto:
|
|
out << " -> auto";
|
|
break;
|
|
case Fuzzing::ReturnTerm::Expression:
|
|
out << " -> ";
|
|
ExpressionToCarbon(return_term.type(), out);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static auto DeclaredNameToCarbon(const Fuzzing::DeclaredName& name,
|
|
llvm::raw_ostream& out) -> void {
|
|
for (const std::string& qual : name.qualifiers()) {
|
|
IdentifierToCarbon(qual, out);
|
|
out << ".";
|
|
}
|
|
IdentifierToCarbon(name.name(), out);
|
|
}
|
|
|
|
static auto DeclarationToCarbon(const Fuzzing::Declaration& declaration,
|
|
llvm::raw_ostream& out) -> void {
|
|
switch (declaration.kind_case()) {
|
|
case Fuzzing::Declaration::KIND_NOT_SET: {
|
|
// Arbitrary default to avoid getting invalid syntax.
|
|
out << "var x: i32;";
|
|
break;
|
|
}
|
|
|
|
case Fuzzing::Declaration::kNamespace: {
|
|
out << "namespace ";
|
|
DeclaredNameToCarbon(declaration.namespace_().name(), out);
|
|
out << ";";
|
|
break;
|
|
}
|
|
|
|
case Fuzzing::Declaration::kDestructor: {
|
|
const auto& function = declaration.destructor();
|
|
out << "destructor";
|
|
llvm::ListSeparator sep;
|
|
out << "[";
|
|
if (function.has_self_pattern()) {
|
|
// This is a class method.
|
|
out << sep;
|
|
PatternToCarbon(function.self_pattern(), out);
|
|
}
|
|
out << "]";
|
|
|
|
// Body is optional.
|
|
if (function.has_body()) {
|
|
out << "\n";
|
|
BlockStatementToCarbon(function.body(), out);
|
|
} else {
|
|
out << ";";
|
|
}
|
|
break;
|
|
}
|
|
case Fuzzing::Declaration::kFunction: {
|
|
const auto& function = declaration.function();
|
|
out << "fn ";
|
|
DeclaredNameToCarbon(function.name(), out);
|
|
|
|
if (!function.deduced_parameters().empty() ||
|
|
function.has_self_pattern()) {
|
|
out << "[";
|
|
llvm::ListSeparator sep;
|
|
for (const Fuzzing::GenericBinding& p : function.deduced_parameters()) {
|
|
out << sep;
|
|
GenericBindingToCarbon(p, out);
|
|
}
|
|
if (function.has_self_pattern()) {
|
|
// This is a class method.
|
|
out << sep;
|
|
PatternToCarbon(function.self_pattern(), out);
|
|
}
|
|
out << "]";
|
|
}
|
|
TuplePatternToCarbon(function.param_pattern(), out);
|
|
ReturnTermToCarbon(function.return_term(), out);
|
|
|
|
// Body is optional.
|
|
if (function.has_body()) {
|
|
out << "\n";
|
|
BlockStatementToCarbon(function.body(), out);
|
|
} else {
|
|
out << ";";
|
|
}
|
|
break;
|
|
}
|
|
|
|
case Fuzzing::Declaration::kClassDeclaration: {
|
|
const auto& class_declaration = declaration.class_declaration();
|
|
out << "class ";
|
|
DeclaredNameToCarbon(class_declaration.name(), out);
|
|
|
|
// type_params is optional.
|
|
if (class_declaration.has_type_params()) {
|
|
TuplePatternToCarbon(class_declaration.type_params(), out);
|
|
}
|
|
|
|
out << "{\n";
|
|
for (const auto& member : class_declaration.members()) {
|
|
DeclarationToCarbon(member, out);
|
|
out << "\n";
|
|
}
|
|
out << "}";
|
|
break;
|
|
}
|
|
|
|
// EXPERIMENTAL MIXIN FEATURE
|
|
case Fuzzing::Declaration::kMixin: {
|
|
const auto& mixin_declaration = declaration.mixin();
|
|
out << "__mixin ";
|
|
DeclaredNameToCarbon(mixin_declaration.name(), out);
|
|
|
|
// type params are not implemented yet
|
|
// if (mixin_declaration.has_params()) {
|
|
// TuplePatternToCarbon(mixin_declaration.params(), out);
|
|
//}
|
|
|
|
out << "{\n";
|
|
for (const auto& member : mixin_declaration.members()) {
|
|
DeclarationToCarbon(member, out);
|
|
out << "\n";
|
|
}
|
|
out << "}";
|
|
// TODO: need to handle interface.self()?
|
|
break;
|
|
}
|
|
|
|
// EXPERIMENTAL MIXIN FEATURE
|
|
case Fuzzing::Declaration::kMix: {
|
|
const auto& mix_declaration = declaration.mix();
|
|
out << "__mix ";
|
|
ExpressionToCarbon(mix_declaration.mixin(), out);
|
|
out << ";";
|
|
break;
|
|
}
|
|
|
|
case Fuzzing::Declaration::kChoice: {
|
|
const auto& choice = declaration.choice();
|
|
out << "choice ";
|
|
DeclaredNameToCarbon(choice.name(), out);
|
|
|
|
out << "{";
|
|
llvm::ListSeparator sep;
|
|
for (const auto& alternative : choice.alternatives()) {
|
|
out << sep;
|
|
IdentifierToCarbon(alternative.name(), out);
|
|
TupleLiteralExpressionToCarbon(alternative.signature(), out);
|
|
}
|
|
out << "}";
|
|
break;
|
|
}
|
|
|
|
case Fuzzing::Declaration::kVariable: {
|
|
const auto& var = declaration.variable();
|
|
out << "var ";
|
|
BindingPatternToCarbon(var.binding(), out);
|
|
|
|
// Initializer is optional.
|
|
if (var.has_initializer()) {
|
|
out << " = ";
|
|
ExpressionToCarbon(var.initializer(), out);
|
|
}
|
|
out << ";";
|
|
break;
|
|
}
|
|
|
|
case Fuzzing::Declaration::kLet: {
|
|
const auto& let = declaration.let();
|
|
out << "let ";
|
|
PatternToCarbon(let.pattern(), out);
|
|
|
|
// TODO: Print out the initializer once it's supported.
|
|
// if (let.has_initializer()) {
|
|
// out << " = ";
|
|
// ExpressionToCarbon(let.initializer(), out);
|
|
// }
|
|
out << ";";
|
|
break;
|
|
}
|
|
|
|
case Fuzzing::Declaration::kInterfaceExtends: {
|
|
const auto& extends = declaration.interface_extends();
|
|
out << "extends ";
|
|
ExpressionToCarbon(extends.base(), out);
|
|
out << ";";
|
|
break;
|
|
}
|
|
|
|
case Fuzzing::Declaration::kInterfaceImpl: {
|
|
const auto& impl = declaration.interface_impl();
|
|
out << "impl ";
|
|
ExpressionToCarbon(impl.impl_type(), out);
|
|
out << " as ";
|
|
ExpressionToCarbon(impl.constraint(), out);
|
|
out << ";";
|
|
break;
|
|
}
|
|
|
|
case Fuzzing::Declaration::kInterface: {
|
|
const auto& interface = declaration.interface();
|
|
out << "interface ";
|
|
DeclaredNameToCarbon(interface.name(), out);
|
|
out << " {\n";
|
|
for (const auto& member : interface.members()) {
|
|
DeclarationToCarbon(member, out);
|
|
out << "\n";
|
|
}
|
|
out << "}";
|
|
break;
|
|
}
|
|
|
|
case Fuzzing::Declaration::kConstraint: {
|
|
const auto& constraint = declaration.constraint();
|
|
out << "constraint ";
|
|
DeclaredNameToCarbon(constraint.name(), out);
|
|
out << " {\n";
|
|
for (const auto& member : constraint.members()) {
|
|
DeclarationToCarbon(member, out);
|
|
out << "\n";
|
|
}
|
|
out << "}";
|
|
break;
|
|
}
|
|
|
|
case Fuzzing::Declaration::kImpl: {
|
|
const auto& impl = declaration.impl();
|
|
if (impl.kind() == Fuzzing::ImplDeclaration::ExternalImpl) {
|
|
out << "external ";
|
|
}
|
|
out << "impl ";
|
|
ExpressionToCarbon(impl.impl_type(), out);
|
|
out << " as ";
|
|
ExpressionToCarbon(impl.interface(), out);
|
|
out << " {\n";
|
|
for (const auto& member : impl.members()) {
|
|
DeclarationToCarbon(member, out);
|
|
out << "\n";
|
|
}
|
|
out << "}";
|
|
break;
|
|
}
|
|
|
|
case Fuzzing::Declaration::kMatchFirst: {
|
|
const auto& match_first = declaration.match_first();
|
|
out << "__match_first {\n";
|
|
for (const auto& impl : match_first.impls()) {
|
|
DeclarationToCarbon(impl, out);
|
|
out << "\n";
|
|
}
|
|
out << "}";
|
|
break;
|
|
}
|
|
|
|
case Fuzzing::Declaration::kAlias: {
|
|
const auto& alias = declaration.alias();
|
|
out << "alias ";
|
|
DeclaredNameToCarbon(alias.name(), out);
|
|
out << " = ";
|
|
ExpressionToCarbon(alias.target(), out);
|
|
out << ";";
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static auto ProtoToCarbon(const Fuzzing::CompilationUnit& compilation_unit,
|
|
llvm::raw_ostream& out) -> void {
|
|
out << "// Generated by proto_to_carbon.\n\n";
|
|
out << "package ";
|
|
LibraryNameToCarbon(compilation_unit.package_statement(), out);
|
|
out << (compilation_unit.is_api() ? " api" : " impl") << ";\n";
|
|
|
|
if (!compilation_unit.declarations().empty()) {
|
|
out << "\n";
|
|
for (const auto& declaration : compilation_unit.declarations()) {
|
|
DeclarationToCarbon(declaration, out);
|
|
out << "\n";
|
|
}
|
|
}
|
|
}
|
|
|
|
auto ProtoToCarbon(const Fuzzing::CompilationUnit& compilation_unit)
|
|
-> std::string {
|
|
std::string source;
|
|
llvm::raw_string_ostream out(source);
|
|
ProtoToCarbon(compilation_unit, out);
|
|
return source;
|
|
}
|
|
|
|
} // namespace Carbon
|