bonkmaykr/otyaSMILEBASIC
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Add StackOver/UnderFlow

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This commit is contained in:
otya128
2016-12-04 16:25:12 +09:00
parent 654cd1b439
commit 46fb83483b
2 changed files with 19 additions and 6 deletions
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9
SMILEBASIC/VM.d
View File

@@ -176,8 +176,7 @@ class VM
{
if(stacki >= this.stack.length)
{
writeln("Stack OF");
readln();
throw new StackOverFlow();
}
stack[stacki++] = value;
}
@@ -193,8 +192,7 @@ class VM
{
if(stacki <= bp)
{
writeln("Stack underflow");
readln();
throw new StackUnderFlow();
}
value = stack[--stacki];
}
@@ -202,8 +200,7 @@ class VM
{
if(stacki <= bp)
{
writeln("Stack underflow");
readln();
throw new StackUnderFlow();
}
--stacki;
}

16
SMILEBASIC/error.d
View File

@@ -56,6 +56,22 @@ class IllegalFunctionCall : SmileBasicError
super("Illegal function call(" ~ func ~ ")");
}
}
class StackOverFlow : SmileBasicError
{
this()
{
this.errnum = 5;
super("Stack overflow");
}
}
class StackUnderFlow : SmileBasicError
{
this()
{
this.errnum = 6;
super("Stack underflow");
}
}
class TypeMismatch : SmileBasicError
{
this()