THPDFContentOperatorView

Provides a borrowed read-only view of the current AST operation

Declaration

function GetOperationBytes(out Bytes: TBytes): boolean;
function GetOperandNode(OperandIndex: Integer;
  out Node: THPDFContentSyntaxNode): boolean;
function GetOperandBytes(OperandIndex: Integer;
  out Bytes: TBytes): boolean;

Parameters

• OperandIndex is a zero-based operand index
• Node receives immutable source spans and syntax relationships
• Bytes receives only the requested operation or operand range

Return value

True when the requested range exists, otherwise False

Usage notes

• The view is valid only during its callback
• Byte getters copy only the selected source span
• The view exposes no edit methods, so transformations must use the callback action and replacement fields

Related APIs

• Content Operator Visitors
• IHPDFContentOperatorVisitor
• THPDFContentStreamAST