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Implement 1-scope semantics

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Peter
2024-08-20 13:08:52 +02:00
parent ad6b7154e1
commit fb713b022b
2 changed files with 7 additions and 2 deletions
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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 execute-block[[ Stmt* ]]
Rule start[[ Stmt* ]] = initialise-binding scope(collateral(collect-declared-vars[[ Stmt* ]]), execute[[ Stmt* ]])

7
IBAF-cbs/IBAF/IBAF-Start/IBAF-Statements.cbs
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@@ -35,7 +35,7 @@ Rule execute[[ ]] = null
Rule execute[[ Stmt Stmt+ ]] = sequential(execute[[ Stmt ]], execute[[ Stmt+ ]])
Semantics execute-block[[ _:block ]] : =>null-type
Rule execute-block[[ '{' Stmt* '}' ]] = scope(collateral(collect-declared-vars[[ Stmt* ]]), execute[[ Stmt* ]])
Rule execute-block[[ '{' Stmt* '}' ]] = execute[[ Stmt* ]]
@@ -64,6 +64,11 @@ 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* ]]