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Peter
2024-08-20 13:07:28 +02:00
parent f39f2de6e5
commit ad6b7154e1
3 changed files with 3 additions and 49 deletions
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26
IBAF-cbs/IBAF/IBAF-Start/IBAF-Expressions.cbs
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@@ -74,29 +74,3 @@ Lexis Dec:decimal ::= '1'-'9'('0'-'9')*
Semantics dec-val[[ _:decimal ]] : ints
Rule dec-val[[ Dec ]] = decimal-natural(\"Dec\")
//Semantics eval-exp[[ _:exp ]] : => values
//
//Rule eval-exp[[ Id ]] = assigned bound id[[ Id ]]
//
//Rule eval-exp[[ Int ]] = int-val[[ Int ]]
//
//Rule eval-exp[[ Exp1 '+' Exp2 ]] =
// int-add(eval-exp[[ Exp1 ]], eval-exp[[ Exp2 ]])
//
//Rule eval-exp[[ Exp1 '/' Exp2 ]] =
// checked int-div(eval-exp[[ Exp1 ]], eval-exp[[ Exp2 ]])
//
//Rule eval-exp[[ Id '(' ParamValues? ')' ]] =
// handle-return apply(bound id[[ Id ]], eval-params[[ ParamValues? ]])
//
//Rule eval-exp[[ '(' Exp ')' ]] = eval-exp[[ Exp ]]

2
IBAF-cbs/IBAF/IBAF-Start/IBAF-Start.cbs
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@@ -2,7 +2,7 @@ Language "IBAFlang"
Syntax START:start ::= statement*
Semantics start[[ _:start ]] : =>null-type
Rule start[[ Stmt* ]] = initialise-binding scope(collateral(collect-declared-vars[[ Stmt* ]]), execute[[ Stmt* ]])
Rule start[[ Stmt* ]] = initialise-binding execute-block[[ Stmt* ]]

24
IBAF-cbs/IBAF/IBAF-Start/IBAF-Statements.cbs
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@@ -17,8 +17,8 @@ Syntax Stmt: statement ::= block
Syntax Params: params ::= id (',' params)?
Semantics execute[[ Stmt*:statement* ]] : =>null-type
Semantics execute[[ Stmt*:statement* ]] : =>null-type
Rule execute[[ Block ]] = execute-block[[ Block ]]
Rule execute[[ 'print' Exp ';' ]] = print(to-string eval-exp[[ Exp ]], "\n")
Rule execute[[ 'int' Id ';' ]] = initialise-variable(bound id[[ Id ]], 0)
@@ -35,9 +35,7 @@ Rule execute[[ ]] = null
Rule execute[[ Stmt Stmt+ ]] = sequential(execute[[ Stmt ]], execute[[ Stmt+ ]])
Semantics execute-block[[ _:block ]] : =>null-type
Rule execute-block[[ '{' Stmt* '}' ]] = execute[[ Stmt* ]]
Rule execute-block[[ '{' Stmt* '}' ]] = scope(collateral(collect-declared-vars[[ Stmt* ]]), execute[[ Stmt* ]])
@@ -55,7 +53,6 @@ Rule collect-params[[ Id ',' Params ]] = collect-params[[ Id ]], give(checked ta
# Handling variable declarations
Semantics collect-declared-vars[[ Stmt*:statement* ]] : (=>environments)+
Rule collect-declared-vars[[ 'int' Id '=' Exp ';' ]] = bind(id[[ Id ]], allocate-variable(integers))
Rule collect-declared-vars[[ 'int' Id ';' ]] = bind(id[[ Id ]], allocate-variable(integers))
Rule collect-declared-vars[[ 'fun' Id '(' Params ')' '{' Stmt* '}' ]] = bind(id[[ Id ]],
@@ -67,23 +64,6 @@ Rule collect-declared-vars[[ 'fun' Id '(' Params ')' '{' Stmt* '}' ]] = bind(id[
)
)
Rule collect-declared-vars[[ '{' Stmt* '}' ]] = collect-declared-vars[[ Stmt* ]]
Rule collect-declared-vars[[ 'if' '(' Exp ')' Block ]] = collect-declared-vars[[ Block ]]
Rule collect-declared-vars[[ 'if' '(' Exp ')' Block1 'else' Block2 ]] = collect-declared-vars[[ Block1 ]], collect-declared-vars[[ Block2 ]]
Rule collect-declared-vars[[ 'while' '(' Exp ')' Block ]] = collect-declared-vars[[ Block ]]
Rule collect-declared-vars[[ ]] = map()
Rule collect-declared-vars[[ Stmt ]] = map()
Rule collect-declared-vars[[ Stmt1 Stmt2 Stmt* ]] = collect-declared-vars[[ Stmt1 ]], collect-declared-vars[[ Stmt2 ]], collect-declared-vars[[ Stmt* ]]