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Yield operator precedence
-----
<?php
function gen() {
yield "a" . "b";
yield "a" or die;
yield "k" => "a" . "b";
yield "k" => "a" or die;
var_dump([yield "k" => "a" . "b"]);
yield yield "k1" => yield "k2" => "a" . "b";
yield yield "k1" => (yield "k2") => "a" . "b";
var_dump([yield "k1" => yield "k2" => "a" . "b"]);
var_dump([yield "k1" => (yield "k2") => "a" . "b"]);
}
-----
!!php7
array(
0: Stmt_Function(
byRef: false
name: gen
params: array(
)
returnType: null
stmts: array(
0: Expr_Yield(
key: null
value: Expr_BinaryOp_Concat(
left: Scalar_String(
value: a
)
right: Scalar_String(
value: b
)
)
)
1: Expr_BinaryOp_LogicalOr(
left: Expr_Yield(
key: null
value: Scalar_String(
value: a
)
)
right: Expr_Exit(
expr: null
)
)
2: Expr_Yield(
key: Scalar_String(
value: k
)
value: Expr_BinaryOp_Concat(
left: Scalar_String(
value: a
)
right: Scalar_String(
value: b
)
)
)
3: Expr_BinaryOp_LogicalOr(
left: Expr_Yield(
key: Scalar_String(
value: k
)
value: Scalar_String(
value: a
)
)
right: Expr_Exit(
expr: null
)
)
4: Expr_FuncCall(
name: Name(
parts: array(
0: var_dump
)
)
args: array(
0: Arg(
value: Expr_Array(
items: array(
0: Expr_ArrayItem(
key: null
value: Expr_Yield(
key: Scalar_String(
value: k
)
value: Expr_BinaryOp_Concat(
left: Scalar_String(
value: a
)
right: Scalar_String(
value: b
)
)
)
byRef: false
)
)
)
byRef: false
unpack: false
)
)
)
5: Expr_Yield(
key: null
value: Expr_Yield(
key: Scalar_String(
value: k1
)
value: Expr_Yield(
key: Scalar_String(
value: k2
)
value: Expr_BinaryOp_Concat(
left: Scalar_String(
value: a
)
right: Scalar_String(
value: b
)
)
)
)
)
6: Expr_Yield(
key: Expr_Yield(
key: Scalar_String(
value: k1
)
value: Expr_Yield(
key: null
value: Scalar_String(
value: k2
)
)
)
value: Expr_BinaryOp_Concat(
left: Scalar_String(
value: a
)
right: Scalar_String(
value: b
)
)
)
7: Expr_FuncCall(
name: Name(
parts: array(
0: var_dump
)
)
args: array(
0: Arg(
value: Expr_Array(
items: array(
0: Expr_ArrayItem(
key: null
value: Expr_Yield(
key: Scalar_String(
value: k1
)
value: Expr_Yield(
key: Scalar_String(
value: k2
)
value: Expr_BinaryOp_Concat(
left: Scalar_String(
value: a
)
right: Scalar_String(
value: b
)
)
)
)
byRef: false
)
)
)
byRef: false
unpack: false
)
)
)
8: Expr_FuncCall(
name: Name(
parts: array(
0: var_dump
)
)
args: array(
0: Arg(
value: Expr_Array(
items: array(
0: Expr_ArrayItem(
key: Expr_Yield(
key: Scalar_String(
value: k1
)
value: Expr_Yield(
key: null
value: Scalar_String(
value: k2
)
)
)
value: Expr_BinaryOp_Concat(
left: Scalar_String(
value: a
)
right: Scalar_String(
value: b
)
)
byRef: false
)
)
)
byRef: false
unpack: false
)
)
)
)
)
)