DiamondNether90/ground_fork
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basic version of catch

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This commit is contained in:
Maxwell
2025-09-21 08:55:50 +10:00
parent 063cdc92e3
commit 28faf6142c
1 changed files with 51 additions and 3 deletions
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54
src/main.cpp
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@@ -363,6 +363,12 @@ GroundValue literalToGroundValue(const Literal& lit) {
return gv;
}
/*
catches stackmap
This stores all catches in a scope, to catch errors before they happen.
*/
stack<map<string, Direct>> catches;
Literal groundValueToLiteral(const GroundValue& gv) {
Literal lit;
switch (gv.type) {
@@ -385,14 +391,30 @@ Literal groundValueToLiteral(const GroundValue& gv) {
return lit;
}
// Forward declaration of setVal for error function
void setVal(string varName, Literal value);
/*
error function
Takes a string (which is a debug message) and prints it to the console, letting the
user know what went wrong with the program.
*/
void error(string in, string errCode = "syntaxError", int exitc = 1) {
int error(string in, string errCode = "syntaxError", int exitc = 1) {
int pops = 0;
while (catches.size() > 0) {
if (catches.top().find(errCode) != catches.top().end()) {
Literal tmpLit;
tmpLit.val = false;
setVal(catches.top()[errCode].varName, tmpLit);
return pops;
} else {
catches.pop();
pops ++;
}
}
cout << "\033[31m" + errCode + ": \033[39m" << in << endl;
exit(exitc);
return pops;
}
/*
@@ -590,6 +612,10 @@ void preProcessLabels(vector<Instruction> instructions) {
function for the program.
*/
Literal exec(vector<Instruction> in, bool executingFunction) {
{
map<string, Direct> tmp;
catches.push(tmp);
}
for (int i = 0; i < in.size(); i++) {
Instruction l = in[i];
if (processingFunction) {
@@ -930,11 +956,33 @@ Literal exec(vector<Instruction> in, bool executingFunction) {
if (l.args.size() < 2) {
error("Could not find all arguments for Catch inbuilt");
}
if (holds_alternative<Literal>(l.args[0])) {
if (holds_alternative<string>(get<Literal>(l.args[0]).val)) {
{
string errCode;
Direct varRef;
if (holds_alternative<Literal>(l.args[0])) {
if (holds_alternative<string>(get<Literal>(l.args[0]).val)) {
errCode = get<string>(get<Literal>(l.args[0]).val);
} else {
error("First argument of catch must be a string literal");
}
} else {
error("First argument of catch must be a string literal");
}
if (holds_alternative<Direct>(l.args[1])) {
varRef = get<Direct>(l.args[1]);
} else {
error("Second argument of catch must be a direct reference");
}
catches.top()[errCode] = varRef;
Literal tmpLit;
tmpLit.val = true;
setVal(varRef.varName, tmpLit);
}
break;
/*
set instruction
This instruction sets a variable to a provided value.