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Increment and decrement operators work

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This commit is contained in:
Kayne Ruse
2022-08-21 00:23:01 +01:00
parent c64d451287
commit b385b461e0
8 changed files with 185 additions and 26 deletions
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86
source/compiler.c
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@@ -147,6 +147,30 @@ static int writeLiteralTypeToCache(LiteralArray* literalCache, Literal literal)
return pushLiteralArray(literalCache, lit);
}
static int writeLiteralToCompiler(Compiler* compiler, Literal literal) {
//get the index
int index = findLiteralIndex(&compiler->literalCache, literal);
if (index < 0) {
index = pushLiteralArray(&compiler->literalCache, literal);
}
//push the literal to the bytecode
if (index >= 256) {
//push a "long" index
compiler->bytecode[compiler->count++] = OP_LITERAL_LONG; //1 byte
*((unsigned short*)(compiler->bytecode + compiler->count)) = (unsigned short)index; //2 bytes
compiler->count += sizeof(unsigned short);
}
else {
//push the index
compiler->bytecode[compiler->count++] = OP_LITERAL; //1 byte
compiler->bytecode[compiler->count++] = (unsigned char)index; //1 byte
}
return index;
}
static void writeCompilerWithJumps(Compiler* compiler, Node* node, void* breakAddressesPtr, void* continueAddressesPtr) {
//grow if the bytecode space is too small
if (compiler->capacity < compiler->count + 1) {
@@ -166,25 +190,7 @@ static void writeCompilerWithJumps(Compiler* compiler, Node* node, void* breakAd
break;
case NODE_LITERAL: {
//ensure the literal is in the cache
int index = findLiteralIndex(&compiler->literalCache, node->atomic.literal);
if (index < 0) {
index = pushLiteralArray(&compiler->literalCache, node->atomic.literal);
}
//push the node opcode to the bytecode
if (index >= 256) {
//push a "long" index
compiler->bytecode[compiler->count++] = OP_LITERAL_LONG; //1 byte
*((unsigned short*)(compiler->bytecode + compiler->count)) = (unsigned short)index; //2 bytes
compiler->count += sizeof(unsigned short);
}
else {
//push the index
compiler->bytecode[compiler->count++] = OP_LITERAL; //1 byte
compiler->bytecode[compiler->count++] = (unsigned char)index; //1 byte
}
writeLiteralToCompiler(compiler, node->atomic.literal);
}
break;
@@ -461,6 +467,48 @@ static void writeCompilerWithJumps(Compiler* compiler, Node* node, void* breakAd
compiler->count += sizeof(unsigned short); //2 bytes
}
break;
case NODE_INCREMENT_PREFIX: {
//push the literal to the stack (twice)
writeLiteralToCompiler(compiler, node->increment.identifier);
writeLiteralToCompiler(compiler, node->increment.identifier);
//push the increment / decrement
Literal increment = TO_INTEGER_LITERAL(node->increment.increment);
writeLiteralToCompiler(compiler, increment);
//push the add opcode
compiler->bytecode[compiler->count++] = (unsigned char)OP_ADDITION; //1 byte
//push the assign
compiler->bytecode[compiler->count++] = (unsigned char)OP_VAR_ASSIGN; //1 byte
//leave the result on the stack
writeLiteralToCompiler(compiler, node->increment.identifier);
compiler->bytecode[compiler->count++] = (unsigned char)OP_LITERAL_RAW; //1 byte
}
break;
case NODE_INCREMENT_POSTFIX: {
//push the identifier's VALUE to the stack
writeLiteralToCompiler(compiler, node->increment.identifier);
compiler->bytecode[compiler->count++] = (unsigned char)OP_LITERAL_RAW; //1 byte
//push the identifier (twice)
writeLiteralToCompiler(compiler, node->increment.identifier);
writeLiteralToCompiler(compiler, node->increment.identifier);
//push the increment / decrement
Literal increment = TO_INTEGER_LITERAL(node->increment.increment);
writeLiteralToCompiler(compiler, increment);
//push the add opcode
compiler->bytecode[compiler->count++] = (unsigned char)OP_ADDITION; //1 byte
//push the assign
compiler->bytecode[compiler->count++] = (unsigned char)OP_VAR_ASSIGN; //1 byte
}
break;
}
}