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carbon-lang/toolchain/parse/testdata/function/call.carbon
T
Geoff Romer 4a0cf6c1fb Track the start of a signature more accurately (#6760) 
This change ensures that a function signature always starts with an
`IdentifierNameMaybeBeforeSignature` node (renamed from
`IdentifierNameBeforeParams`), even in the case of function declarations
like `fn F -> T` that have no parameter list. As a consequence, this
ensures that we push new entries onto `pattern_block_stack` and
`full_pattern_stack` when we start processing the function signature.
2026-02-23 22:46:03 +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/function/call.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/parse/testdata/function/call.carbon
// --- basic.carbon
fn F() {
a.b.f(c.d, (e)).g();
}
// --- ref_args.carbon
fn F() {
G(ref x);
G(ref x, y);
G(x, ref y);
}
// --- nested_ref.carbon
fn F() {
G(x, (ref x,));
G(x, (ref y, z));
G(x, (y, ref z));
G(x, {.y = ref y, .z = z});
}
// CHECK:STDOUT: - filename: basic.carbon
// CHECK:STDOUT: parse_tree: [
// CHECK:STDOUT: {kind: 'FileStart', text: ''},
// CHECK:STDOUT: {kind: 'FunctionIntroducer', text: 'fn'},
// CHECK:STDOUT: {kind: 'IdentifierNameMaybeBeforeSignature', text: 'F'},
// CHECK:STDOUT: {kind: 'ExplicitParamListStart', text: '('},
// CHECK:STDOUT: {kind: 'ExplicitParamList', text: ')', subtree_size: 2},
// CHECK:STDOUT: {kind: 'FunctionDefinitionStart', text: '{', subtree_size: 5},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'a'},
// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeSignature', text: 'b'},
// CHECK:STDOUT: {kind: 'MemberAccessExpr', text: '.', subtree_size: 3},
// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeSignature', text: 'f'},
// CHECK:STDOUT: {kind: 'MemberAccessExpr', text: '.', subtree_size: 5},
// CHECK:STDOUT: {kind: 'CallExprStart', text: '(', subtree_size: 6},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'c'},
// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeSignature', text: 'd'},
// CHECK:STDOUT: {kind: 'MemberAccessExpr', text: '.', subtree_size: 3},
// CHECK:STDOUT: {kind: 'TupleLiteralComma', text: ','},
// CHECK:STDOUT: {kind: 'ParenExprStart', text: '('},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'e'},
// CHECK:STDOUT: {kind: 'ParenExpr', text: ')', subtree_size: 3},
// CHECK:STDOUT: {kind: 'CallExpr', text: ')', subtree_size: 14},
// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeSignature', text: 'g'},
// CHECK:STDOUT: {kind: 'MemberAccessExpr', text: '.', subtree_size: 16},
// CHECK:STDOUT: {kind: 'CallExprStart', text: '(', subtree_size: 17},
// CHECK:STDOUT: {kind: 'CallExpr', text: ')', subtree_size: 18},
// CHECK:STDOUT: {kind: 'ExprStatement', text: ';', subtree_size: 19},
// CHECK:STDOUT: {kind: 'FunctionDefinition', text: '}', subtree_size: 25},
// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
// CHECK:STDOUT: ]
// CHECK:STDOUT: - filename: ref_args.carbon
// CHECK:STDOUT: parse_tree: [
// CHECK:STDOUT: {kind: 'FileStart', text: ''},
// CHECK:STDOUT: {kind: 'FunctionIntroducer', text: 'fn'},
// CHECK:STDOUT: {kind: 'IdentifierNameMaybeBeforeSignature', text: 'F'},
// CHECK:STDOUT: {kind: 'ExplicitParamListStart', text: '('},
// CHECK:STDOUT: {kind: 'ExplicitParamList', text: ')', subtree_size: 2},
// CHECK:STDOUT: {kind: 'FunctionDefinitionStart', text: '{', subtree_size: 5},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'G'},
// CHECK:STDOUT: {kind: 'CallExprStart', text: '(', subtree_size: 2},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'x'},
// CHECK:STDOUT: {kind: 'PrefixOperatorRef', text: 'ref', subtree_size: 2},
// CHECK:STDOUT: {kind: 'CallExpr', text: ')', subtree_size: 5},
// CHECK:STDOUT: {kind: 'ExprStatement', text: ';', subtree_size: 6},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'G'},
// CHECK:STDOUT: {kind: 'CallExprStart', text: '(', subtree_size: 2},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'x'},
// CHECK:STDOUT: {kind: 'PrefixOperatorRef', text: 'ref', subtree_size: 2},
// CHECK:STDOUT: {kind: 'TupleLiteralComma', text: ','},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'y'},
// CHECK:STDOUT: {kind: 'CallExpr', text: ')', subtree_size: 7},
// CHECK:STDOUT: {kind: 'ExprStatement', text: ';', subtree_size: 8},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'G'},
// CHECK:STDOUT: {kind: 'CallExprStart', text: '(', subtree_size: 2},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'x'},
// CHECK:STDOUT: {kind: 'TupleLiteralComma', text: ','},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'y'},
// CHECK:STDOUT: {kind: 'PrefixOperatorRef', text: 'ref', subtree_size: 2},
// CHECK:STDOUT: {kind: 'CallExpr', text: ')', subtree_size: 7},
// CHECK:STDOUT: {kind: 'ExprStatement', text: ';', subtree_size: 8},
// CHECK:STDOUT: {kind: 'FunctionDefinition', text: '}', subtree_size: 28},
// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
// CHECK:STDOUT: ]
// CHECK:STDOUT: - filename: nested_ref.carbon
// CHECK:STDOUT: parse_tree: [
// CHECK:STDOUT: {kind: 'FileStart', text: ''},
// CHECK:STDOUT: {kind: 'FunctionIntroducer', text: 'fn'},
// CHECK:STDOUT: {kind: 'IdentifierNameMaybeBeforeSignature', text: 'F'},
// CHECK:STDOUT: {kind: 'ExplicitParamListStart', text: '('},
// CHECK:STDOUT: {kind: 'ExplicitParamList', text: ')', subtree_size: 2},
// CHECK:STDOUT: {kind: 'FunctionDefinitionStart', text: '{', subtree_size: 5},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'G'},
// CHECK:STDOUT: {kind: 'CallExprStart', text: '(', subtree_size: 2},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'x'},
// CHECK:STDOUT: {kind: 'TupleLiteralComma', text: ','},
// CHECK:STDOUT: {kind: 'TupleLiteralStart', text: '('},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'x'},
// CHECK:STDOUT: {kind: 'PrefixOperatorRef', text: 'ref', subtree_size: 2},
// CHECK:STDOUT: {kind: 'TupleLiteralComma', text: ','},
// CHECK:STDOUT: {kind: 'TupleLiteral', text: ')', subtree_size: 5},
// CHECK:STDOUT: {kind: 'CallExpr', text: ')', subtree_size: 10},
// CHECK:STDOUT: {kind: 'ExprStatement', text: ';', subtree_size: 11},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'G'},
// CHECK:STDOUT: {kind: 'CallExprStart', text: '(', subtree_size: 2},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'x'},
// CHECK:STDOUT: {kind: 'TupleLiteralComma', text: ','},
// CHECK:STDOUT: {kind: 'TupleLiteralStart', text: '('},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'y'},
// CHECK:STDOUT: {kind: 'PrefixOperatorRef', text: 'ref', subtree_size: 2},
// CHECK:STDOUT: {kind: 'TupleLiteralComma', text: ','},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'z'},
// CHECK:STDOUT: {kind: 'TupleLiteral', text: ')', subtree_size: 6},
// CHECK:STDOUT: {kind: 'CallExpr', text: ')', subtree_size: 11},
// CHECK:STDOUT: {kind: 'ExprStatement', text: ';', subtree_size: 12},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'G'},
// CHECK:STDOUT: {kind: 'CallExprStart', text: '(', subtree_size: 2},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'x'},
// CHECK:STDOUT: {kind: 'TupleLiteralComma', text: ','},
// CHECK:STDOUT: {kind: 'TupleLiteralStart', text: '('},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'y'},
// CHECK:STDOUT: {kind: 'TupleLiteralComma', text: ','},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'z'},
// CHECK:STDOUT: {kind: 'PrefixOperatorRef', text: 'ref', subtree_size: 2},
// CHECK:STDOUT: {kind: 'TupleLiteral', text: ')', subtree_size: 6},
// CHECK:STDOUT: {kind: 'CallExpr', text: ')', subtree_size: 11},
// CHECK:STDOUT: {kind: 'ExprStatement', text: ';', subtree_size: 12},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'G'},
// CHECK:STDOUT: {kind: 'CallExprStart', text: '(', subtree_size: 2},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'x'},
// CHECK:STDOUT: {kind: 'TupleLiteralComma', text: ','},
// CHECK:STDOUT: {kind: 'StructLiteralStart', text: '{'},
// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeSignature', text: 'y'},
// CHECK:STDOUT: {kind: 'StructFieldDesignator', text: '.', subtree_size: 2},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'y'},
// CHECK:STDOUT: {kind: 'PrefixOperatorRef', text: 'ref', subtree_size: 2},
// CHECK:STDOUT: {kind: 'StructLiteralField', text: '=', subtree_size: 5},
// CHECK:STDOUT: {kind: 'StructLiteralComma', text: ','},
// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeSignature', text: 'z'},
// CHECK:STDOUT: {kind: 'StructFieldDesignator', text: '.', subtree_size: 2},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'z'},
// CHECK:STDOUT: {kind: 'StructLiteralField', text: '=', subtree_size: 4},
// CHECK:STDOUT: {kind: 'StructLiteral', text: '}', subtree_size: 12},
// CHECK:STDOUT: {kind: 'CallExpr', text: ')', subtree_size: 17},
// CHECK:STDOUT: {kind: 'ExprStatement', text: ';', subtree_size: 18},
// CHECK:STDOUT: {kind: 'FunctionDefinition', text: '}', subtree_size: 59},
// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
// CHECK:STDOUT: ]
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