Sym:

Structures: defined in dds_symbol.h
    DDS_SYM       - Generic symbol Table item 
    DDS_TYPE      - Type descriptor (DDS_SYM_TYPE)
    DDS_OBJECT    - Object storage descriptor
    DDS_MEMBER    - Struct or Unions field descriptor
    DDS_EXPR      - Generic expression descriptor (DDS_SYM_EXPR)
    DDS_EARG      - Expression argument descriptor
    DDS_EXPR1     - Expression descriptor for single argument (DDS_SYM_EXPR)
    DDS_EXPR2     - Expression descriptor for two arguments (DDS_SYM_EXPR)
    DDS_EXPR3     - Expression descriptor for three arguments (DDS_SYM_EXPR)
    DDS_EXPR4     - Expression descriptor for four arguments (DDS_SYM_EXPR)
    DDS_EXPRA     - Assignment expression descriptor (DDS_SYM_EXPR)
    DDS_EXPRC     - Copy op expression descriptor (DDS_SYM_EXPR)
    DDS_VALUE     - Expression descriptor (DDS_SYM_EXPR)
    DDS_CONDITION - Conditional op expression descriptor
    DDS_BLOCK     - Block descriptor, begins unique name space (DDS_SYM_BLOCK)
    DDS_DECLARE   - Parser temporaries for nested declarations
    DDS_LABEL     - Label descriptor (DDS_SYM_LABEL)
    DDS_RELOC     - Relocation descriptor for pointers within symbol tables
    DDS_OPNOTE    - Opcode annotation descriptor
    DDS_DUMP_ITEM - Field descriptor in tabular dump list descriptor
    DDS_LEX_START - Les start state cjamges
    DDS_SCANNER   - Scanner input stack (analogous to nested "#includes")


Structures: defined in dds_ptype.h
    DDS_PRIME       - Prime attributes (one for each DDS_PTYPE)
    DDS_PRIME_GENUS - type genus "prime" attributes (one for each DDS_TYPE_GENUS)


Globals:
    DDS_SYM      *dds_push_sym;     /* Temporary for PUSH_SYM & PUSH_VALUE macro */
    DDS_DECLARE  *dds_declare;      /* Current declaration scope */
    DDS_OPNOTE   *dds_opnote;       /* Opcode descriptor table */
    DDS_TABLE     dds_keyword;      /* Parser keyword hash table */
    DDS_TABLE    *dds_symbol;       /* Ptr to active symbol table. */
    DDS_BLOCK    *dds_block;        /* Ptr to current block in active symbol tbl */
    DDS_EXPR     *dds_needle;       /* Ptr to first expression to evaluate. */
    DDS_EXPR     *dds_thread;       /* Ptr to lst expression to evaluate. */
    DDS_BLOCK    *dds_prime_block;  /* Prime block for in symbol table */
    DDS_BLOCK    *dds_error_block;  /* Error recovery entries in prime symbol tbl */
    DDS_TYPE     *dds_error_type;   /* Error recovery entries in prime symbol tbl */
    DDS_MEMBER   *dds_error_member; /* Error recovery entries in prime symbol tbl */
    DDS_VALUE    *dds_error_value;  /* Error recovery entries in prime symbol tbl */
    DDS_OBJECT   *dds_error_object; /* Error recovery entries in prime symbol tbl */
    DDS_EXPR     *dds_error_expr;   /* Error recovery entries in prime symbol tbl */
    DDS_EXPR     *dds_error_thread; /* Error recovery entries in prime symbol tbl */
    DDS_SCANNER  *dds_lexer;        /* Handle into scanner state */
    DDS_SCANNER   dds_lexer_root;   /* Handle into scanner state */
    DDS_LEX_START dds_lex_ss;       /* Lex start state */
    DDS_OBJECT   *dds_nop_object;
    DDS_EXPRA     DDS_CON_EXPRA;    /* Used to evaluate one conversion */
    void        **DDS_PTR_CEMETERY; /* Graveyard for unused pointers computed by 
                                       expressions. */
 
    DDS_PTYPE       dds_mutate[];
    DDS_PTYPE       dds_concur[][];
    DDS_PRIME      *dds_prime;
    DDS_PRIME_GENUS dds_prime_genus[];


Files:
    parser.tab.c    - GNU bison parser for binary formats generated by bison
    scanner.yy.c    - GNU flex scanner for binary formats and map definitions
    symblockbegin.c - Begin nested DDS_BLOCK ("tag" name) on symbol table
    symblockend.c   - Exit current local DDS_BLOCK in symbol table

    symobjectlit.c  - Create DDS_OBJECT literal in symbol table
    symdeclare.c    - Create DDS_OBJECT for declared type in symbol table
    symenumname.c   - Create enumerated DDS_OBJECT (implicit value) in symbol table
    symenumvalue.c  - Create explicit value for enumerated DDS_OBJECT in symbol tbl
    symnullvalue.c  - Test DDS_OBJECT for a NULL value (arithmetic constant assumed)
    symconst.c      - Uses macro to create these constant evaluation functions:
                            ddsSymConstInt
                            ddsSymConstLong
                            ddsSymConstSizet
                            ddsSymConstULong

    symexpr0a.c     - Create DDS_EXPR (no argument) in symbol table
    symexpr1a.c     - Create DDS_EXPR (one argument, unary ops) in symbol table
    symexpr1a1.c    - Create DDS_EXPR (one argument,   plus op) in symbol table
    symexpr1a2.c    - Create DDS_EXPR (one argument,  exist op) in symbol table
    symexpr1a3.c    - Create DDS_EXPR (one argument, sizeof op) in symbol table
    symexpr1a4.c    - Create DDS_EXPR (one argument,  field op) in symbol table
    symexpr2a.c     - Create DDS_EXPR (two arguments, assignment) in symbol table
    symexpr2b.c     - Create DDS_EXPR (two arguments, function) in symbol table
    symexpr2c.c     - Append DDS_EXPR (struct/union member ref) to symbol table
    symexpr2d.c     - Create DDS_EXPR (two arguments, subscript) in symbol table
    symexpr3a.c     - Create DDS_EXPR (three arguments '?:') in symbol table
    symtypecast.c   - Create "cast" DDS_EXPR in symbol table
    symexprdone.c   - Finalize DDS_EXPR thread in symbol table
    symrelocvalue.c - Evaluate DDS_RELOC entry in symbol table

    symmember.c     - Create struct/union DDS_MEMBER in symbol table
    symmemberbit.c  - Create struct/union DDS_MEMBER bit field in symbol table
    symmemberedit.c - Append and edit struct/union member
    symlookup.c     - Lookup name in symbol table
    symlookupmem.c  - Lookup member name in symbol table

    symtypearray.c  - Create DDS_TYPE array (constant size) in symbol table
    symtypecopy.c   - Create DDS_TYPE via copy in symbol table
    symtypespec.c   - Create DDS_TYPE "specifier" in symbol table
    symtypestore.c  - Create DDS_TYPE "storage class" in symbol table
    symtypesue.c    - Create & initialize Struct/Union/Enum DDS_TYPE in symbol table
    symtypequal.c   - Append DDS_TYPE "qualifier" to symbol table
    symtypemerge.c  - Merge declaration and existing type into symbol table
    symtypeshape.c  - Test and reduce shape of one DDS_TYPE in symbol table
    symtypeshape2.c - Test and reduce shape of two DDS_TYPE in symbol table
    symconsttype.c  - Test DDS_TYPE for 'const' qualifiers (recursive)
    symsametype.c   - Test DDS_TYPE pair for "type" equivalence

    symtypedefeb.c  - Create DDS_TYPEDEF enum (begin) to symbol table
    symtypedefev.c  - Create DDS_TYPEDEF enum value in symbol table
    symtypedefee.c  - Create DDS_TYPEDEF enum (end) to symbol table
    symtypedefsb.c  - Create DDS_TYPEDEF Struct (Begin) to symbol table
    symtypedefsm.c  - Create DDS_TYPEDEF Struct Member in symbol table
    symtypedefse.c  - Create DDS_TYPEDEF Struct (End) to symbol table
    symtypedefobj.c - Append typedef DDS_OBJECT to symbol table

    symvalueptr.c   - Create relocatable value pointer
    symident.c      - validate syntax of identifier for symbols