mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 21:10:12 +01:00
Richard Smith
35ccac5125
Also switch from modeling type values as `i1` to modeling them as an empty struct. We don't need any runtime representation for types, as there are no runtime operations on them, so an empty struct seems like a good representation.
99 lines
3.5 KiB
C++
99 lines
3.5 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 "toolchain/semantics/semantics_context.h"
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namespace Carbon {
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auto SemanticsHandleLiteral(SemanticsContext& context,
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ParseTree::Node parse_node) -> bool {
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auto token = context.parse_tree().node_token(parse_node);
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switch (auto token_kind = context.tokens().GetKind(token)) {
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case TokenKind::False:
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case TokenKind::True: {
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context.AddNodeAndPush(
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parse_node,
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SemanticsNode::BoolLiteral::Make(
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parse_node,
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context.CanonicalizeType(SemanticsNodeId::BuiltinBoolType),
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token_kind == TokenKind::True ? SemanticsBoolValue::True
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: SemanticsBoolValue::False));
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break;
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}
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case TokenKind::IntegerLiteral: {
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auto id = context.semantics_ir().AddIntegerLiteral(
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context.tokens().GetIntegerLiteral(token));
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context.AddNodeAndPush(
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parse_node,
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SemanticsNode::IntegerLiteral::Make(
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parse_node,
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context.CanonicalizeType(SemanticsNodeId::BuiltinIntegerType),
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id));
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break;
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}
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case TokenKind::RealLiteral: {
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auto token_value = context.tokens().GetRealLiteral(token);
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auto id = context.semantics_ir().AddRealLiteral(
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{.mantissa = token_value.Mantissa(),
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.exponent = token_value.Exponent(),
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.is_decimal = token_value.IsDecimal()});
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context.AddNodeAndPush(parse_node,
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SemanticsNode::RealLiteral::Make(
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parse_node,
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context.CanonicalizeType(
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SemanticsNodeId::BuiltinFloatingPointType),
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id));
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break;
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}
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case TokenKind::StringLiteral: {
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auto id = context.semantics_ir().AddString(
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context.tokens().GetStringLiteral(token));
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context.AddNodeAndPush(
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parse_node,
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SemanticsNode::StringLiteral::Make(
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parse_node,
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context.CanonicalizeType(SemanticsNodeId::BuiltinStringType),
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id));
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break;
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}
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case TokenKind::Type: {
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context.node_stack().Push(parse_node, SemanticsNodeId::BuiltinTypeType);
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break;
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}
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case TokenKind::Bool: {
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context.node_stack().Push(parse_node, SemanticsNodeId::BuiltinBoolType);
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break;
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}
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case TokenKind::IntegerTypeLiteral: {
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auto text = context.tokens().GetTokenText(token);
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if (text != "i32") {
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return context.TODO(parse_node, "Currently only i32 is allowed");
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}
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context.node_stack().Push(parse_node,
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SemanticsNodeId::BuiltinIntegerType);
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break;
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}
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case TokenKind::FloatingPointTypeLiteral: {
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auto text = context.tokens().GetTokenText(token);
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if (text != "f64") {
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return context.TODO(parse_node, "Currently only f64 is allowed");
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}
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context.node_stack().Push(parse_node,
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SemanticsNodeId::BuiltinFloatingPointType);
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break;
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}
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case TokenKind::StringTypeLiteral: {
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context.node_stack().Push(parse_node, SemanticsNodeId::BuiltinStringType);
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break;
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}
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default: {
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return context.TODO(parse_node, llvm::formatv("Handle {0}", token_kind));
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}
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}
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return true;
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}
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} // namespace Carbon
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