all will be int

This commit is contained in:
Peter
2023-12-10 16:51:49 +01:00
parent 165be5cfdb
commit c4f9bbcbfa
7 changed files with 27 additions and 64 deletions

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@@ -35,10 +35,8 @@ context-free syntax // Language
"{" L-statement* "}"
L-statement.L-statement--R-print-LPAREN-L-exp-RPAREN-SEMI =
"print" "(" L-exp ")" ";"
L-statement.L-statement--L-type-L-id-SEMI =
L-type L-id ";"
L-statement.L-statement--L-type-L-id-EQUALS-L-exp-SEMI =
L-type L-id "=" L-exp ";"
L-statement.L-statement--L-id-SEMI =
L-id ";"
L-statement.L-statement--L-id-EQUALS-L-exp-SEMI =
L-id "=" L-exp ";"
L-statement.L-statement--R-return-L-exp-Q-SEMI =
@@ -46,13 +44,6 @@ context-free syntax // Language
L-statement.L-statement--R-fun-L-id-LPAREN-RPAREN-LBRACE-L-statement-S-RBRACE =
"fun" L-id "(" ")" "{" L-statement* "}"
L-type.L-type--R-int =
"int"
L-type.L-type--R-bool =
"bool"
L-type.L-type--L-id =
L-id
// # Handling variable declarations
@@ -93,10 +84,6 @@ variables // Meta-variables
L-statement+ = "(:Stmt" [1-9]? "+:)" {prefer}
L-statement* = "..." [1-9]? {prefer}
L-statement* = "..." [1-9]? {prefer}
L-type = "(:Typ" [1-9]? ":)" {prefer}
L-type? = "(:Typ" [1-9]? "?:)" {prefer}
L-type* = "(:Typ" [1-9]? "*:)" {prefer}
L-type+ = "(:Typ" [1-9]? "+:)" {prefer}
// # Handling variable declarations

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@@ -24,12 +24,9 @@ to-funcons:
|[ execute[: print((:Exp:)); :] ]| ->
|[ print eval-exp[: (:Exp:) :] ]|
to-funcons:
|[ execute[: (:Typ:)(:Id:); :] ]| ->
|[ null ]|
to-funcons:
|[ execute[: (:Typ:)(:Id:)=(:Exp:); :] ]| ->
|[ execute[: (:Id:); :] ]| ->
|[ assign (bound id[: (:Id:) :],
eval-exp[: (:Exp:) :]) ]|
0) ]|
to-funcons:
|[ execute[: (:Id:)=(:Exp:); :] ]| ->
|[ assign (bound id[: (:Id:) :],
@@ -55,18 +52,16 @@ to-funcons:
to-funcons:
|[ collect-declared-vars[: (:Typ:)(:Id:)=(:Exp:); :] ]| ->
|[ bind (\"(:Id:)\",
allocate-initialised-variable (integers,
0)) ]|
|[ collect-declared-vars[: (:Id:)=(:Exp:); :] ]| ->
|[ bind (id[: (:Id:) :],
allocate-variable (integers)) ]|
to-funcons:
|[ collect-declared-vars[: (:Typ:)(:Id:); :] ]| ->
|[ bind (\"(:Id:)\",
allocate-initialised-variable (integers,
0)) ]|
|[ collect-declared-vars[: (:Id:); :] ]| ->
|[ bind (id[: (:Id:) :],
allocate-variable (integers)) ]|
to-funcons:
|[ collect-declared-vars[: fun(:Id:)(){(:Stmt*:)} :] ]| ->
|[ bind (\"(:Id:)\",
|[ bind (id[: (:Id:) :],
function abstraction (execute[: {(:Stmt*:)} :])) ]|
to-funcons:
|[ collect-declared-vars[: :] ]| ->

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@@ -4,6 +4,6 @@ fun test() {
return 3;
}
int x = test();
x = test();
print(x);

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@@ -1,13 +1,13 @@
int z =5;
int x =5*3;
z =5;
x =5*3;
print(x);
x = 2;
print(x*3);
{
int y =4;
y =4;
print (y);
}

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@@ -44,7 +44,7 @@ Rule eval-exp[[ '(' Exp ')' ]] = eval-exp[[ Exp ]]
Lexis Id:id ::= ('a'-'z' | 'A'-'Z') ('a'-'z' | 'A'-'Z' | '0'-'9')*
Semantics id[[ _:id ]] : ids
Semantics id[[ _:id ]] : identifiers
Rule id[[ Id ]] = \"Id\"

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@@ -4,23 +4,16 @@ Language "IBAFlang"
Syntax Stmt: statement ::= '{' statement* '}'
| 'print' '(' exp ')' ';'
| type id ';'
| type id '=' exp ';'
| id ';'
| id '=' exp ';'
| 'return' exp? ';'
| 'fun' id '(' ')' '{' statement* '}'
Syntax Typ:type ::= 'int'
| 'bool'
| id
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[[ Typ Id ';' ]] = null
Rule execute[[ Typ Id '=' Exp ';' ]] = assign(bound id[[ Id ]], eval-exp[[ Exp ]])
Rule execute[[ Id ';' ]] = assign(bound id[[ Id ]], 0)
Rule execute[[ Id '=' Exp ';' ]] = assign(bound id[[ Id ]], eval-exp[[ Exp ]])
Rule execute[[ 'return' Exp ';' ]] = return eval-exp[[ Exp ]]
Rule execute[[ 'return' ';' ]] = return null
@@ -36,25 +29,13 @@ Rule execute[[ Stmt Stmt+ ]] = sequential(execute[[ Stmt ]], execute[[ Stmt+ ]])
Semantics collect-declared-vars[[ Stmt*:statement* ]] : (=>environments)+
Rule collect-declared-vars[[ Typ Id '=' Exp ';' ]] =
bind(
\"Id\",
allocate-initialised-variable(
integers, //TODO: use type
0 //TODO: use correct default value for type
Rule collect-declared-vars[[ Id '=' Exp ';' ]] = bind(id[[ Id ]],
allocate-variable(integers)
)
Rule collect-declared-vars[[ Id ';' ]] = bind(id[[ Id ]],
allocate-variable(integers)
)
Rule collect-declared-vars[[ Typ Id ';' ]] =
bind(
\"Id\",
allocate-initialised-variable(
integers, //TODO: use type
0 //TODO: use correct default value for type
)
)
Rule collect-declared-vars[[ 'fun' Id '(' ')' '{' Stmt* '}' ]] =
bind(
\"Id\",
Rule collect-declared-vars[[ 'fun' Id '(' ')' '{' Stmt* '}' ]] = bind(id[[ Id ]],
function abstraction(execute[[ '{' Stmt* '}' ]])
)
Rule collect-declared-vars[[ ]] = map()