方法 make 的文档由以下类型组装而成：
Match 类
来自于 Match
make 方法
method make(Match:D: Mu $payload)
sub make(Mu $payload)
将任意有效载荷(payload)存储到 Match 对象中，稍后可通过 .made / .ast 方法重新取回它。
这通常用于 grammar 的 action 类方法中，其中一个方法存储一段数据，然后由另一个方法取回。这取决于你存储什么数据。它可以是树节点，计算结果或值的列表。
sub 形式的 make 操作当前的 $/，这可能是一个简写：
method my-action ($/) {
make "foo: $/";
}
make 会把数据结构附加到各自的 Match 对象上, 随后通过 .made 方法取回。使用 Match.perl 方法可以看到, Match 里面有一个 made 属性：
> if 'abc' ~~ /\w+/ { $/.make: {'a' => 'bc', 'd' => 'wsl'}; say $/.made }
{a => bc, d => wsl}
> $/.WHAT
(Match)
> $/.perl
Match.new(list => (), made => {:a("bc"), :d("wsl")}, pos => 3, hash => Map.new(()), orig => "abc", from => 0)
> if 'abc' ~~ /\w+/ { $/.make: {'a' => 'bc', 'd' => 'wsl'}; say $/.ast }
{a => bc, d => wsl}
> $/.perl
Match.new(list => (), made => {:a("bc"), :d("wsl")}, pos => 3, hash => Map.new(()), orig => "abc", from => 0)
除了可以在 regex 中 make/made 数据外，还可以在 Action 类中做同样的事情：
grammar MathExpression {
token TOP { <sum> }
rule sum { <product>+ % '+' }
rule product { <term>+ % '*' }
rule term { <number> | <group> }
rule group { '(' <sum> ')' }
token number { \d+ }
}
class MathEvalAction {
method TOP($/) {
make $<sum>.made;
}
method sum($/) {
make [+] $<product>».made;
}
method product($/) {
make [*] $<term>».made;
}
method term($/) {
make $/.values[0].made;
}
method group($/) {
make $<sum>.made;
}
method number($/) {
make $/.Int;
}
}
my $match = MathExpression.parse(
'4 + 5 * (1 + 3)',
actions => MathEvalAction.new,
);
say $match.made; # Output: 24
say $match.perl; # 会打印一个 Match 的数据结构
Output：
MathExpression=(
:list(List=()),
:pos(15),
:made(24),
:hash(Map=(
:sum(MathExpression=(
:list(List=()),
:pos(15),
:made(24),
:hash(Map=(
:product(Array=[
MathExpression=(
:list(List=()),
:pos(2),
:made(4),
:hash(Map=(
:term(Array=[
MathExpression=(
:list(List=()),
:pos(2),
:made(4),
:hash(Map=(
:number(MathExpression=(
:list(List=()),
:pos(1),
:made(4),
:hash(Map=()),
:orig("4 + 5 * (1 + 3)"),
:to(1),
:from(0)
))
)),
:orig("4 + 5 * (1 + 3)"),
:to(2),
:from(0)
)
])
)),
:orig("4 + 5 * (1 + 3)"),
:to(2),
:from(0)
),
MathExpression=(
:list(List=()),
:pos(15),
:made(20),
:hash(Map=(
:term(Array=[
MathExpression=(
:list(List=()),
:pos(6),
:made(5),
:hash(Map=(
:number(MathExpression=(
:list(List=()),
:pos(5),
:made(5),
:hash(Map=()),
:orig("4 + 5 * (1 + 3)"),
:to(5),
:from(4)
))
)),
:orig("4 + 5 * (1 + 3)"),
:to(6),
:from(4)
),
MathExpression=(
:list(List=()),
:pos(15),
:made(4),
:hash(Map=(
:group(MathExpression=(
:list(List=()),
:pos(15),
:made(4),
:hash(Map=(
:sum(MathExpression=(
:list(List=()),
:pos(14),
:made(4),
:hash(Map=(
:product(Array=[
MathExpression=(
:list(List=()),
:pos(11),
:made(1),
:hash(Map=(
:term(Array=[
MathExpression=(
:list(List=()),
:pos(11),
:made(1),
:hash(Map=(
:number(MathExpression=(
:list(List=()),
:pos(10),
:made(1),
:hash(Map=()),
:orig("4 + 5 * (1 + 3)"),
:to(10),
:from(9)
))
)),
:orig("4 + 5 * (1 + 3)"),
:to(11),
:from(9)
)
])
)),
:orig("4 + 5 * (1 + 3)"),
:to(11),
:from(9)
),
MathExpression=(
:list(List=()),
:pos(14),
:made(3),
:hash(Map=(
:term(Array=[
MathExpression=(
:list(List=()),
:pos(14),
:made(3),
:hash(Map=(
:number(MathExpression=(
:list(List=()),
:pos(14),
:made(3),
:hash(Map=()),
:orig("4 + 5 * (1 + 3)"),
:to(14),
:from(13)
))
)),
:orig("4 + 5 * (1 + 3)"),
:to(14),
:from(13)
)
])
)),
:orig("4 + 5 * (1 + 3)"),
:to(14),
:from(13)
)
])
)),
:orig("4 + 5 * (1 + 3)"),
:to(14),
:from(9)
))
)),
:orig("4 + 5 * (1 + 3)"),
:to(15),
:from(8)
))
)),
:orig("4 + 5 * (1 + 3)"),
:to(15),
:from(8)
)
])
)),
:orig("4 + 5 * (1 + 3)"),
:to(15),
:from(4)
)
])
)),
:orig("4 + 5 * (1 + 3)"),
:to(15),
:from(0)
))
)),
:orig("4 + 5 * (1 + 3)"),
:to(15),
:from(0)
)