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Start work on error handling

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This commit is contained in:
Maxwell
2026-01-18 20:49:50 +11:00
parent 549eaedc04
commit 72162a7410
4 changed files with 106 additions and 1 deletions
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33
src/interpreter.c
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@@ -11,6 +11,8 @@
int currentInstruction = 0;
bool isMainScopeGlobal = true;
[[noreturn]] void runtimeError(GroundRuntimeError error, char* what, GroundInstruction* where, int whereLine) {
printf("Ground runtime error:\n ErrorType: ");
switch (error) {
@@ -78,6 +80,22 @@ int currentInstruction = 0;
exit(1);
}
[[noreturn]] void throwError(GroundError* error) {
printf("Uncaught Ground runtime error:\n ErrorType: %s\n", error->type);
if (error->what != NULL) {
printf(" ErrorContext: %s\n", error->what);
}
if (error->where != NULL) {
printf(" ErrorInstruction: ");
printGroundInstruction(error->where);
printf("\n");
}
if (error->line > -1) {
printf(" ErrorLine: %zu\n", error->line + 1);
}
exit(1);
}
GroundLabel* findLabel(GroundLabel* head, const char *id) {
GroundLabel *item;
HASH_FIND_STR(head, id, item);
@@ -438,6 +456,8 @@ GroundValue interpretGroundProgram(GroundProgram* in, GroundScope* inScope) {
scope.labels = &labels;
scope.variables = &variables;
}
scope.isMainScope = isMainScopeGlobal;
isMainScopeGlobal = false;
// Preprocess all labels, structs and functions
for (size_t i = 0; i < in->size; i++) {
if (in->instructions[i].type == CREATELABEL) {
@@ -872,6 +892,10 @@ GroundValue interpretGroundInstruction(GroundInstruction inst, GroundScope* scop
addVariable(scope->variables, in->args.args[1].value.refName, createStringGroundValue("none"));
break;
}
case ERROR: {
addVariable(scope->variables, in->args.args[1].value.refName, createStringGroundValue("error"));
break;
}
}
break;
@@ -1737,6 +1761,12 @@ GroundValue interpretGroundInstruction(GroundInstruction inst, GroundScope* scop
if (function->nativeFn) {
GroundValue returnValue = function->nativeFn(scope, argsList);
if (returnValue.type == ERROR) {
if (scope->isMainScope) {
throwError(&returnValue.data.errorVal);
}
return returnValue;
}
if (returnValue.type != function->returnType) {
runtimeError(RETURN_TYPE_MISMATCH, "Unexpected return value type from native function", in, currentInstruction);
}
@@ -1756,6 +1786,9 @@ GroundValue interpretGroundInstruction(GroundInstruction inst, GroundScope* scop
size_t currentCurrentInstruction = currentInstruction;
currentInstruction = function->startLine;
GroundValue returnValue = interpretGroundProgram(&function->program, &newScope);
if (returnValue.type == ERROR) {
return returnValue;
}
if (returnValue.type != function->returnType) {
runtimeError(RETURN_TYPE_MISMATCH, "Unexpected return value type from function", in, currentInstruction);
}