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add parameters to functions

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Peter
2023-12-13 15:27:55 +01:00
parent c4f9bbcbfa
commit c7bf88c33a
9 changed files with 190 additions and 41 deletions
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34
IBAF-cbs/IBAF/IBAF-Start/IBAF-Statements.cbs
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@@ -4,20 +4,24 @@ Language "IBAFlang"
Syntax Stmt: statement ::= '{' statement* '}'
| 'print' '(' exp ')' ';'
| id ';'
| 'int' id ';'
| id '=' exp ';'
| 'int' id '=' exp ';'
| 'return' exp? ';'
| 'fun' id '(' ')' '{' statement* '}'
| 'fun' id '(' params ')' '{' statement* '}'
Syntax Params: params ::= id (',' params)?
Semantics execute[[ Stmt*:statement* ]] : => null-type
Rule execute[[ '{' Stmt* '}' ]] = scope(collateral(collect-declared-vars[[ Stmt* ]]), execute[[ Stmt* ]])
Rule execute[[ 'print' '(' Exp ')' ';' ]] = print eval-exp[[ Exp ]]
Rule execute[[ Id ';' ]] = assign(bound id[[ Id ]], 0)
Rule execute[[ 'int' Id ';' ]] = assign(bound id[[ Id ]], 0)
Rule execute[[ Id '=' Exp ';' ]] = assign(bound id[[ Id ]], eval-exp[[ Exp ]])
Rule execute[[ 'int' Id '=' Exp ';' ]] = assign(bound id[[ Id ]], eval-exp[[ Exp ]])
Rule execute[[ 'return' Exp ';' ]] = return eval-exp[[ Exp ]]
Rule execute[[ 'return' ';' ]] = return null
Rule execute[[ 'fun' Id '(' ')' '{' Stmt* '}' ]] = null
Rule execute[[ 'fun' Id '(' Params ')' '{' Stmt* '}' ]] = null
Rule execute[[ ]] = null
Rule execute[[ Stmt Stmt+ ]] = sequential(execute[[ Stmt ]], execute[[ Stmt+ ]])
@@ -25,18 +29,32 @@ Rule execute[[ Stmt Stmt+ ]] = sequential(execute[[ Stmt ]], execute[[ Stmt+ ]])
# Handling parameter declarations
Semantics collect-params[[ Params:params ]] : (=>environments)+
Rule collect-params[[ Id ]] = bind(
id[[ Id ]],
allocate-initialised-variable(integers, checked head given)
)
Rule collect-params[[ Id ',' Params ]] = collect-params[[ Id ]], give(checked tail given, collect-params[[ Params ]])
# Handling variable declarations
Semantics collect-declared-vars[[ Stmt*:statement* ]] : (=>environments)+
Rule collect-declared-vars[[ Id '=' Exp ';' ]] = bind(id[[ Id ]],
Rule collect-declared-vars[[ 'int' Id '=' Exp ';' ]] = bind(id[[ Id ]],
allocate-variable(integers)
)
Rule collect-declared-vars[[ Id ';' ]] = bind(id[[ Id ]],
Rule collect-declared-vars[[ 'int' Id ';' ]] = bind(id[[ Id ]],
allocate-variable(integers)
)
Rule collect-declared-vars[[ 'fun' Id '(' ')' '{' Stmt* '}' ]] = bind(id[[ Id ]],
function abstraction(execute[[ '{' Stmt* '}' ]])
Rule collect-declared-vars[[ 'fun' Id '(' Params ')' '{' Stmt* '}' ]] = bind(id[[ Id ]],
function abstraction(
scope(
collateral(collect-declared-vars[[ Stmt* ]], collect-params[[ Params ]]),
execute[[ Stmt* ]]
)
)
)
Rule collect-declared-vars[[ ]] = map()
Rule collect-declared-vars[[ Stmt ]] = map()