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Removed a couple of small optimisations form the parser

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This commit is contained in:
Kayne Ruse
2024-10-10 08:18:27 +11:00
parent 9f45925072
commit ca4073a5ae
3 changed files with 34 additions and 76 deletions
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16
source/toy_parser.c
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@@ -310,10 +310,8 @@ static Toy_AstFlag literal(Toy_Bucket** bucketHandle, Toy_Parser* parser, Toy_As
static Toy_AstFlag unary(Toy_Bucket** bucketHandle, Toy_Parser* parser, Toy_Ast** rootHandle) {
//'subtract' can only be applied to numbers and groups, while 'negate' can only be applied to booleans and groups
//this function takes the libery of peeking into the uppermost node, to see if it can apply this to it
if (parser->previous.type == TOY_TOKEN_OPERATOR_SUBTRACT) {
bool connectedDigit = parser->previous.lexeme[1] >= '0' && parser->previous.lexeme[1] <= '9'; //BUGFIX: '- 1' should not be optimised into a negative
parsePrecedence(bucketHandle, parser, rootHandle, PREC_UNARY);
@@ -332,15 +330,7 @@ static Toy_AstFlag unary(Toy_Bucket** bucketHandle, Toy_Parser* parser, Toy_Ast*
else if (parser->previous.type == TOY_TOKEN_OPERATOR_NEGATE) {
parsePrecedence(bucketHandle, parser, rootHandle, PREC_UNARY);
//inverted booleans
if ((*rootHandle)->type == TOY_AST_VALUE && TOY_VALUE_IS_BOOLEAN((*rootHandle)->value.value)) {
(*rootHandle)->value.value = TOY_VALUE_FROM_BOOLEAN( !TOY_VALUE_AS_BOOLEAN((*rootHandle)->value.value) );
}
else {
//actually emit the negation node
Toy_private_emitAstUnary(bucketHandle, rootHandle, TOY_AST_FLAG_NEGATE);
}
Toy_private_emitAstUnary(bucketHandle, rootHandle, TOY_AST_FLAG_NEGATE);
}
else {
@@ -462,8 +452,8 @@ static Toy_AstFlag group(Toy_Bucket** bucketHandle, Toy_Parser* parser, Toy_Ast*
parsePrecedence(bucketHandle, parser, rootHandle, PREC_GROUP);
consume(parser, TOY_TOKEN_OPERATOR_PAREN_RIGHT, "Expected ')' at end of group");
//Toy_AstGroup is omitted from generation, as an optimisation
// Toy_private_emitAstGroup(bucketHandle, rootHandle);
//Toy_AstGroup could be omitted, but is kept for now
Toy_private_emitAstGroup(bucketHandle, rootHandle);
}
else {

16
source/toy_routine.c
View File

@@ -250,6 +250,10 @@ static void writeInstructionBinary(Toy_Routine** rt, Toy_AstBinary ast) {
EMIT_BYTE(rt, code,0);
}
static void writeInstructionGroup(Toy_Routine** rt, Toy_AstGroup ast) {
writeRoutineCode(rt, ast.child);
}
static void writeInstructionPrint(Toy_Routine** rt, Toy_AstPrint ast) {
//the thing to print
writeRoutineCode(rt, ast.child);
@@ -292,23 +296,21 @@ static void writeRoutineCode(Toy_Routine** rt, Toy_Ast* ast) {
writeInstructionBinary(rt, ast->binary);
break;
case TOY_AST_GROUP:
writeInstructionGroup(rt, ast->group);
break;
case TOY_AST_PRINT:
writeInstructionPrint(rt, ast->print);
break;
//other disallowed instructions
case TOY_AST_GROUP:
fprintf(stderr, TOY_CC_ERROR "ERROR: Invalid AST type found: Group shouldn't be used\n" TOY_CC_RESET);
exit(-1);
break;
//meta instructions are disallowed
case TOY_AST_PASS:
//NOTE: this should be disallowed, but for now it's required for testing
// fprintf(stderr, TOY_CC_ERROR "ERROR: Invalid AST type found: Unknown pass\n" TOY_CC_RESET);
// exit(-1);
break;
//meta instructions are disallowed
case TOY_AST_ERROR:
fprintf(stderr, TOY_CC_ERROR "ERROR: Invalid AST type found: Unknown error\n" TOY_CC_RESET);
exit(-1);