Frontend Data Structures

This chapter should describe the details necessary to understand how the various gfc_* data are used and interact. In general it is advisable to read the code in dump-parse-tree.cc as its routines should exhaust all possible valid combinations of content for these structures.

• gfc_code
  • IF Blocks
  • Loops
  • SELECT Statements
  • BLOCK and ASSOCIATE
• gfc_expr
  • Constants
  • Operators
  • Function Calls
  • Array- and Structure-Constructors
  • Null
  • Variables and Reference Expressions
  • Constant Substring References