Skip to content

Class ZCL_LLM_TEMPLATE_PARSER

AI Generated documentation.

Overview

The zcl_llm_template_parser is a sophisticated template rendering class that provides Jinja2-like template processing capabilities in ABAP. It allows developers to:

  • Add and manage templates
  • Render templates with dynamic context

  • Support complex template features like:

  • Variable substitution

  • Conditional rendering
  • Looping
  • Filtering
  • Nested data access

Public methods include:

  • constructor(): Initializes an empty template collection
  • add_template(): Adds or replaces a template in the parser
  • render(): Renders a specific template with a given context

Dependencies

No external dependencies are required. The class uses standard ABAP type descriptions and type handling mechanisms.

Details

Template Processing Architecture

The template parsing follows a multi-stage process:

graph TD
    A[Add Template] --> B[Tokenize Template]
    B --> C[Parse Tokens]
    C --> D{Control Structures}
    D --> |Variable| E[Resolve Variable]
    D --> |Conditional| F[Evaluate Condition]
    D --> |Loop| G[Process Loop Content]
    E & F & G --> H[Render Final Output]

Key internal mechanisms include:

  • Dynamic variable resolution through nested path traversal

  • Flexible condition evaluation supporting:

  • Comparison operators

  • Logical AND/OR
  • Negation
  • Advanced loop processing with metadata
  • Comprehensive error handling for various template parsing scenarios

The parser supports complex template scenarios like:

  • Nested data structures
  • Conditional rendering with multiple branches
  • Iterative processing of tables
  • String transformation filters
  • Escape character handling

The implementation leverages ABAP's type description capabilities to dynamically inspect and manipulate data structures, providing a powerful and flexible template rendering solution.