github.com/Konstantin8105/c4go@v0.0.0-20240505174241-768bb1c65a51/ast/non_null_attr.go (about)

     1  package ast
     2  
     3  import (
     4  	"strings"
     5  
     6  	"github.com/Konstantin8105/c4go/util"
     7  )
     8  
     9  // NonNullAttr is a type of attribute that is optionally attached to a variable
    10  // or struct field definition.
    11  type NonNullAttr struct {
    12  	Addr        Address
    13  	Pos         Position
    14  	IsInherited bool
    15  	A           int
    16  	B           int
    17  	C           int
    18  	D           int
    19  	ChildNodes  []Node
    20  }
    21  
    22  func parseNonNullAttr(line string) *NonNullAttr {
    23  	groups := groupsFromRegex(
    24  		`<(?P<position>.*)>
    25  		(?P<inherited> Inherited)?
    26  		(?P<a> \d+)(?P<b> \d+)?(?P<c> \d+)?(?P<d> \d+)?`,
    27  		line,
    28  	)
    29  
    30  	a := 0
    31  	if groups["a"] != "" {
    32  		a = util.Atoi(strings.TrimSpace(groups["a"]))
    33  	}
    34  
    35  	b := 0
    36  	if groups["b"] != "" {
    37  		b = util.Atoi(strings.TrimSpace(groups["b"]))
    38  	}
    39  
    40  	c := 0
    41  	if groups["c"] != "" {
    42  		c = util.Atoi(strings.TrimSpace(groups["c"]))
    43  	}
    44  
    45  	d := 0
    46  	if groups["d"] != "" {
    47  		d = util.Atoi(strings.TrimSpace(groups["d"]))
    48  	}
    49  
    50  	return &NonNullAttr{
    51  		Addr:        ParseAddress(groups["address"]),
    52  		Pos:         NewPositionFromString(groups["position"]),
    53  		IsInherited: len(groups["inherited"]) > 0,
    54  		A:           a,
    55  		B:           b,
    56  		C:           c,
    57  		D:           d,
    58  		ChildNodes:  []Node{},
    59  	}
    60  }
    61  
    62  // AddChild adds a new child node. Child nodes can then be accessed with the
    63  // Children attribute.
    64  func (n *NonNullAttr) AddChild(node Node) {
    65  	n.ChildNodes = append(n.ChildNodes, node)
    66  }
    67  
    68  // Address returns the numeric address of the node. See the documentation for
    69  // the Address type for more information.
    70  func (n *NonNullAttr) Address() Address {
    71  	return n.Addr
    72  }
    73  
    74  // Children returns the child nodes. If this node does not have any children or
    75  // this node does not support children it will always return an empty slice.
    76  func (n *NonNullAttr) Children() []Node {
    77  	return n.ChildNodes
    78  }
    79  
    80  // Position returns the position in the original source code.
    81  func (n *NonNullAttr) Position() Position {
    82  	return n.Pos
    83  }