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Kayne Ruse
2025-01-12 11:16:46 +11:00
parent 101833934b
commit 4282268f3d
10 changed files with 82 additions and 77 deletions
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38
deep-dive/developing-toy.md
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@@ -237,34 +237,34 @@ Opcodes within the bytecode are 1 byte in length, and specify a single action to
The interpreter is stack-based; most, if not all, the actions are preformed on literals within a specially designated array called `stack`. For example:
```c
case TOY_OP_PRINT:
if (!execPrint(interpreter)) {
return;
}
break;
case TOY_OP_PRINT:
if (!execPrint(interpreter)) {
return;
}
break;
```
When the opcode `TOY_OP_PRINT` is encountered, the top literal within the stack is popped off, and printed (more info on literals below).
```c
static bool execPrint(Toy_Interpreter* interpreter) {
//get the top literal
Toy_Literal lit = Toy_popLiteralArray(&interpreter->stack);
//get the top literal
Toy_Literal lit = Toy_popLiteralArray(&interpreter->stack);
//if the top literal is an identifier, get it's value
Toy_Literal idn = lit;
if (TOY_IS_IDENTIFIER(lit) && Toy_parseIdentifierToValue(interpreter, &lit)) {
Toy_freeLiteral(idn);
}
//if the top literal is an identifier, get it's value
Toy_Literal idn = lit;
if (TOY_IS_IDENTIFIER(lit) && Toy_parseIdentifierToValue(interpreter, &lit)) {
Toy_freeLiteral(idn);
}
//print as a string to the current print method
Toy_printLiteralCustom(lit, interpreter->printOutput);
//print as a string to the current print method
Toy_printLiteralCustom(lit, interpreter->printOutput);
//free the literal
Toy_freeLiteral(lit);
//free the literal
Toy_freeLiteral(lit);
//continue the loop
return true;
//continue the loop
return true;
}
```
@@ -275,7 +275,7 @@ As in most programming languages, variables can be represented by names specifie
```c
Toy_Literal idn = literal; //cache the literal, just in case it's an identifier
if (TOY_IS_IDENTIFIER(literal) && Toy_parseIdentifierToValue(interpreter, &literal)) { //if it is an identifier, parse it...
Toy_freeLiteral(idn); //always remember to free the original identifier, otherwise you'll have a memory leak!
Toy_freeLiteral(idn); //always remember to free the original identifier, otherwise you'll have a memory leak!
}
```