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carbon-lang/toolchain/parse/testdata/basics/value_literals.carbon
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Jon Ross-Perkinsjosh11bRichard Smith
 37d5046ceb Support parse/check/lower for char (#5901) 
toolchain/check/testdata/builtins/char/basics.carbon and
toolchain/lower/testdata/builtins/char.carbon are probably the most
interesting tests here. The parse tests is required because this adds a
new node kind, and we need coverage of it; but the attached info is
minor. There's a fair amount of test churn here because I'm adding the
Core.Char and Core.CharLiteral types as new singletons.

My intent here is that `CharId` is always a unicode code point, even
when the type is a `Char` and thus must be a single UTF-8 code unit
(single byte). This mainly means the stored value of a `CharValue` can
be printed internally without knowing the type.

---------

Co-authored-by: josh11b <15258583+josh11b@users.noreply.github.com>
Co-authored-by: Richard Smith <richard@metafoo.co.uk>
2025-08-06 20:39:01 +00:00

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// 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
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/parse/testdata/basics/value_literals.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/parse/testdata/basics/value_literals.carbon
// --- int_literals.carbon
// 8 and 9 trigger special behavior in APInt when mishandling signed versus
// unsigned, so we pay extra attention to those.
var ints: array(i32, 5) = (
8,
9,
0x8,
0b1000,
39999999999999999993,
);
// --- real_literals.carbon
var reals: array(f64, 7) = (
0.9,
8.0,
80.0,
1.0e7,
1.0e8,
1.0e-8,
39999999999999999993.0e39999999999999999993,
);
// --- bool_literal.carbon
var f: bool = false;
var t: bool = true;
// --- char_literal.carbon
var c: Core.Char = 'c';
// --- string_literal.carbon
var test_str: String = "Test";
// CHECK:STDOUT: - filename: int_literals.carbon
// CHECK:STDOUT: parse_tree: [
// CHECK:STDOUT: {kind: 'FileStart', text: ''},
// CHECK:STDOUT: {kind: 'VariableIntroducer', text: 'var'},
// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeParams', text: 'ints'},
// CHECK:STDOUT: {kind: 'ArrayExprKeyword', text: 'array'},
// CHECK:STDOUT: {kind: 'ArrayExprOpenParen', text: '('},
// CHECK:STDOUT: {kind: 'IntTypeLiteral', text: 'i32'},
// CHECK:STDOUT: {kind: 'ArrayExprComma', text: ','},
// CHECK:STDOUT: {kind: 'IntLiteral', text: '5'},
// CHECK:STDOUT: {kind: 'ArrayExpr', text: ')', subtree_size: 6},
// CHECK:STDOUT: {kind: 'VarBindingPattern', text: ':', subtree_size: 8},
// CHECK:STDOUT: {kind: 'VariablePattern', text: 'var', subtree_size: 9},
// CHECK:STDOUT: {kind: 'VariableInitializer', text: '='},
// CHECK:STDOUT: {kind: 'TupleLiteralStart', text: '('},
// CHECK:STDOUT: {kind: 'IntLiteral', text: '8'},
// CHECK:STDOUT: {kind: 'TupleLiteralComma', text: ','},
// CHECK:STDOUT: {kind: 'IntLiteral', text: '9'},
// CHECK:STDOUT: {kind: 'TupleLiteralComma', text: ','},
// CHECK:STDOUT: {kind: 'IntLiteral', text: '0x8'},
// CHECK:STDOUT: {kind: 'TupleLiteralComma', text: ','},
// CHECK:STDOUT: {kind: 'IntLiteral', text: '0b1000'},
// CHECK:STDOUT: {kind: 'TupleLiteralComma', text: ','},
// CHECK:STDOUT: {kind: 'IntLiteral', text: '39999999999999999993'},
// CHECK:STDOUT: {kind: 'TupleLiteralComma', text: ','},
// CHECK:STDOUT: {kind: 'TupleLiteral', text: ')', subtree_size: 12},
// CHECK:STDOUT: {kind: 'VariableDecl', text: ';', subtree_size: 24},
// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
// CHECK:STDOUT: ]
// CHECK:STDOUT: - filename: real_literals.carbon
// CHECK:STDOUT: parse_tree: [
// CHECK:STDOUT: {kind: 'FileStart', text: ''},
// CHECK:STDOUT: {kind: 'VariableIntroducer', text: 'var'},
// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeParams', text: 'reals'},
// CHECK:STDOUT: {kind: 'ArrayExprKeyword', text: 'array'},
// CHECK:STDOUT: {kind: 'ArrayExprOpenParen', text: '('},
// CHECK:STDOUT: {kind: 'FloatTypeLiteral', text: 'f64'},
// CHECK:STDOUT: {kind: 'ArrayExprComma', text: ','},
// CHECK:STDOUT: {kind: 'IntLiteral', text: '7'},
// CHECK:STDOUT: {kind: 'ArrayExpr', text: ')', subtree_size: 6},
// CHECK:STDOUT: {kind: 'VarBindingPattern', text: ':', subtree_size: 8},
// CHECK:STDOUT: {kind: 'VariablePattern', text: 'var', subtree_size: 9},
// CHECK:STDOUT: {kind: 'VariableInitializer', text: '='},
// CHECK:STDOUT: {kind: 'TupleLiteralStart', text: '('},
// CHECK:STDOUT: {kind: 'RealLiteral', text: '0.9'},
// CHECK:STDOUT: {kind: 'TupleLiteralComma', text: ','},
// CHECK:STDOUT: {kind: 'RealLiteral', text: '8.0'},
// CHECK:STDOUT: {kind: 'TupleLiteralComma', text: ','},
// CHECK:STDOUT: {kind: 'RealLiteral', text: '80.0'},
// CHECK:STDOUT: {kind: 'TupleLiteralComma', text: ','},
// CHECK:STDOUT: {kind: 'RealLiteral', text: '1.0e7'},
// CHECK:STDOUT: {kind: 'TupleLiteralComma', text: ','},
// CHECK:STDOUT: {kind: 'RealLiteral', text: '1.0e8'},
// CHECK:STDOUT: {kind: 'TupleLiteralComma', text: ','},
// CHECK:STDOUT: {kind: 'RealLiteral', text: '1.0e-8'},
// CHECK:STDOUT: {kind: 'TupleLiteralComma', text: ','},
// CHECK:STDOUT: {kind: 'RealLiteral', text: '39999999999999999993.0e39999999999999999993'},
// CHECK:STDOUT: {kind: 'TupleLiteralComma', text: ','},
// CHECK:STDOUT: {kind: 'TupleLiteral', text: ')', subtree_size: 16},
// CHECK:STDOUT: {kind: 'VariableDecl', text: ';', subtree_size: 28},
// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
// CHECK:STDOUT: ]
// CHECK:STDOUT: - filename: bool_literal.carbon
// CHECK:STDOUT: parse_tree: [
// CHECK:STDOUT: {kind: 'FileStart', text: ''},
// CHECK:STDOUT: {kind: 'VariableIntroducer', text: 'var'},
// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeParams', text: 'f'},
// CHECK:STDOUT: {kind: 'BoolTypeLiteral', text: 'bool'},
// CHECK:STDOUT: {kind: 'VarBindingPattern', text: ':', subtree_size: 3},
// CHECK:STDOUT: {kind: 'VariablePattern', text: 'var', subtree_size: 4},
// CHECK:STDOUT: {kind: 'VariableInitializer', text: '='},
// CHECK:STDOUT: {kind: 'BoolLiteralFalse', text: 'false'},
// CHECK:STDOUT: {kind: 'VariableDecl', text: ';', subtree_size: 8},
// CHECK:STDOUT: {kind: 'VariableIntroducer', text: 'var'},
// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeParams', text: 't'},
// CHECK:STDOUT: {kind: 'BoolTypeLiteral', text: 'bool'},
// CHECK:STDOUT: {kind: 'VarBindingPattern', text: ':', subtree_size: 3},
// CHECK:STDOUT: {kind: 'VariablePattern', text: 'var', subtree_size: 4},
// CHECK:STDOUT: {kind: 'VariableInitializer', text: '='},
// CHECK:STDOUT: {kind: 'BoolLiteralTrue', text: 'true'},
// CHECK:STDOUT: {kind: 'VariableDecl', text: ';', subtree_size: 8},
// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
// CHECK:STDOUT: ]
// CHECK:STDOUT: - filename: char_literal.carbon
// CHECK:STDOUT: parse_tree: [
// CHECK:STDOUT: {kind: 'FileStart', text: ''},
// CHECK:STDOUT: {kind: 'VariableIntroducer', text: 'var'},
// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeParams', text: 'c'},
// CHECK:STDOUT: {kind: 'CoreNameExpr', text: 'Core'},
// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeParams', text: 'Char'},
// CHECK:STDOUT: {kind: 'MemberAccessExpr', text: '.', subtree_size: 3},
// CHECK:STDOUT: {kind: 'VarBindingPattern', text: ':', subtree_size: 5},
// CHECK:STDOUT: {kind: 'VariablePattern', text: 'var', subtree_size: 6},
// CHECK:STDOUT: {kind: 'VariableInitializer', text: '='},
// CHECK:STDOUT: {kind: 'CharLiteral', text: ''c''},
// CHECK:STDOUT: {kind: 'VariableDecl', text: ';', subtree_size: 10},
// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
// CHECK:STDOUT: ]
// CHECK:STDOUT: - filename: string_literal.carbon
// CHECK:STDOUT: parse_tree: [
// CHECK:STDOUT: {kind: 'FileStart', text: ''},
// CHECK:STDOUT: {kind: 'VariableIntroducer', text: 'var'},
// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeParams', text: 'test_str'},
// CHECK:STDOUT: {kind: 'StringTypeLiteral', text: 'String'},
// CHECK:STDOUT: {kind: 'VarBindingPattern', text: ':', subtree_size: 3},
// CHECK:STDOUT: {kind: 'VariablePattern', text: 'var', subtree_size: 4},
// CHECK:STDOUT: {kind: 'VariableInitializer', text: '='},
// CHECK:STDOUT: {kind: 'StringLiteral', text: '"Test"'},
// CHECK:STDOUT: {kind: 'VariableDecl', text: ';', subtree_size: 8},
// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
// CHECK:STDOUT: ]
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