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Fixed some issues in scope

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This commit is contained in:
Kayne Ruse
2022-08-15 10:15:24 +01:00
parent 6b834ca6d1
commit 7e01ead6ff
3 changed files with 16 additions and 6 deletions
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1
scripts/small.toy
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@@ -2,3 +2,4 @@
var dict : [string, int] = ["hello" : 1, "world" : 2];

6
source/interpreter.c
View File

@@ -304,7 +304,7 @@ static bool execVarDecl(Interpreter* interpreter, bool lng) {
Literal type = interpreter->literalCache.literals[typeIndex];
if (!declareScopeVariable(interpreter->scope, identifier, type)) {
printf("Can't redefine the variable \"");;
printf("Can't redefine the variable \"");
printLiteral(identifier);
printf("\"\n");
return false;
@@ -325,14 +325,14 @@ static bool execVarAssign(Interpreter* interpreter) {
Literal lhs = popLiteralArray(&interpreter->stack);
if (!IS_IDENTIFIER(lhs)) {
printf("Can't assign to a non-variable \"");;
printf("Can't assign to a non-variable \"");
printLiteral(lhs);
printf("\"\n");
return false;
}
if (!isDelcaredScopeVariable(interpreter->scope, lhs)) {
printf("Undeclared variable \"");;
printf("Undeclared variable \"");
printLiteral(lhs);
printf("\"\n");
return false;

15
source/scope.c
View File

@@ -59,11 +59,11 @@ static bool checkType(Literal typeLiteral, Literal value) {
for (int i = 0; i < AS_DICTIONARY(value)->capacity; i++) {
//only assigned and non-tombstoned keys
if (!IS_NULL(AS_DICTIONARY(value)->entries[i].key)) {
if (checkType(((Literal*)(AS_TYPE(typeLiteral).subtypes))[0], AS_DICTIONARY(value)->entries[i].key)) {
if (!checkType(((Literal*)(AS_TYPE(typeLiteral).subtypes))[0], AS_DICTIONARY(value)->entries[i].key)) {
return false;
}
if (checkType(((Literal*)(AS_TYPE(typeLiteral).subtypes))[1], AS_DICTIONARY(value)->entries[i].value)) {
if (!checkType(((Literal*)(AS_TYPE(typeLiteral).subtypes))[1], AS_DICTIONARY(value)->entries[i].value)) {
return false;
}
}
@@ -112,7 +112,16 @@ bool declareScopeVariable(Scope* scope, Literal key, Literal type) {
}
bool isDelcaredScopeVariable(Scope* scope, Literal key) {
return existsLiteralDictionary(&scope->variables, key);
if (scope == NULL) {
return false;
}
//if it's not in this scope, keep searching up the chain
if (!existsLiteralDictionary(&scope->variables, key)) {
return isDelcaredScopeVariable(scope->ancestor, key);
}
return true;
}
//return false if undefined, or can't be assigned