[fpc-pascal] More syntax questions (part 2)
Adriaan van Os
adriaan at adriaan.biz
Sat Dec 16 14:18:33 CET 2023
More questions about the FreePascal Language Reference (version 3.2.0) part 2
17. For the following rules, I couldn't find a definition in the Language Reference. Can I assume
they can all be defined as <identifier> ?
object-type-identifier = identifier .
field-identifier = identifier .
interface-identifier = identifier .
interface-type-identifier = identifier .
method-identifier = identifier .
procedure-identifier = identifier .
protocol-identifier = identifier .
protocol-type-identifier = identifier .
qualified-method-identifier = identifier .
result-identifier = identifier .
type-identifier = identifier .
function-identifier = identifier .
unit-identifier = identifier .
variable-identifier = identifier .
18. Section 14.4.1 defines a rule <value-parameter>
value-parameter = identifier-list ":" [ "ARRAY" "OF" ] parameter-type | identifier ":"
type-identifier "=" default-parameter-value .
I couldn't find a rule for <parameter-type>. If <parameter-type> equals <type-identifier> then it
may be easier to name it <type-identifier> ?
19. Sections 3.6, 14.2 and 15.2 refer to a rule <result-type>.
function-header = "FUNCTION" formal-parameter-list ":" result-type .
function-header = "FUNCTION" ( identifier | qualified-method-identifier ) formal-parameter-list
":" result-type [ modifiers ] [ hintdirectives ] .
operator-definition = "operator" ( assignment-operator-definition | arithmetic-operator-definition
| comparision-operator-definition ) result-identifier ":" result-type ";" subroutine-block .
I couldn't find a rule for <result-type>. Can I assume ?
result-type = type-identifier .
20. For the following rules, I couldn't find a definition in the Language Reference. Can I assume
they can all be defined as <single-quoted-string> ?
guid = single-quoted-string .
string-constant-declaration = single-quoted-string .
string-literal = single-quoted-string .
stringconstant = single-quoted-string .
where <single-quoted-string> is a parser built-in rule that parses two consecutive single-quote
chars as a literal single-quote char ? and that may not contain CR and LF characters ? or any
other control characters ?
21. Can I assume ?
statement-list = statement { ";" statement } .
statementlist = statement-list .
22. Various rules refer to a rule <variable-reference> for which I can't find the rule. What is it ?
23. Section 12.2 defines a rule <function-call> that references rules <qualified-method-designator>
and <method-designator>.
function-call = ( function-identifier | method-designator | qualified-method-designator |
variable-reference ) [ actual-parameter-list ] .
I can't find the rules for <qualified-method-designator> and <method-designator>. What are they ?
24. Sections 14.4.1 and 14.4.4 define rules that refer to a rule <default-parameter-value>.
value-parameter = identifier-list ":" [ "ARRAY" "OF" ] parameter-type | identifier ":"
type-identifier "=" default-parameter-value .
constant-parameter = "CONST" ( identifier-list [ ":" [ "ARRAY" "OF" ] type-identifier ] |
identifier ":" type-identifier "=" default-parameter-value ) .
I can't find the rule for <default-parameter-value>. What is it ?
25. Section 16.2 defines a rule <interface-part> that refers to a rule <property-declaration-part>
interface-part = "INTERFACE" [ uses-clause ] { constant-declaration-part |
type-declaration-part | variable-declaration-part | property-declaration-part |
procedure-headers-part } .
I can't find the rule <property-declaration-part>. What is it ?
(more to follow)
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