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Global Variables 21

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This commit is contained in:
nazrin 2025-06-07 08:05:31 +00:00
parent a7b7348f61
commit 4f2211eb72
9 changed files with 178 additions and 36 deletions
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19
src/clox/parserules.d
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@ -8,13 +8,13 @@ import clox.emitter;
import clox.value;
import clox.object;
alias ParseFn = void function(Compiler* compiler);
alias ParseFn = void function(Compiler* compiler, bool canAssign = false);
private void grouping(Compiler* compiler){
private void grouping(Compiler* compiler, bool _){
compiler.parser.expression();
compiler.parser.consume(Token.Type.RightParen, "Expect ')' after expression.");
}
private void unary(Compiler* compiler){
private void unary(Compiler* compiler, bool _){
Token operator = compiler.parser.previous;
compiler.parser.parsePrecedence(Precedence.Unary);
compiler.emitter.setLine(operator.line);
@ -24,7 +24,7 @@ private void unary(Compiler* compiler){
default: assert(0);
}
}
private void binary(Compiler* compiler){
private void binary(Compiler* compiler, bool _){
Token operator = compiler.parser.previous;
immutable(ParseRule)* rule = ParseRule.get(operator.type);
compiler.parser.parsePrecedence(cast(Precedence)(rule.precedence + 1));
@ -48,14 +48,14 @@ private void binary(Compiler* compiler){
}
}
private void number(Compiler* compiler){
private void number(Compiler* compiler, bool _){
import core.stdc.stdlib : strtod;
Token token = compiler.parser.previous;
double value = strtod(token.lexeme.ptr, null);
compiler.emitter.setLine(token.line);
compiler.emitter.emitConstant(Value.from(value));
}
private void literal(Compiler* compiler){
private void literal(Compiler* compiler, bool _){
Token token = compiler.parser.previous;
compiler.emitter.setLine(token.line);
switch(token.type){
@ -65,13 +65,16 @@ private void literal(Compiler* compiler){
default: assert(0);
}
}
private void strlit(Compiler* compiler){
private void strlit(Compiler* compiler, bool _){
Token token = compiler.parser.previous;
const char[] str = token.lexeme[1 .. $-1];
Obj.String* strObj = Obj.String.copy(str);
compiler.emitter.setLine(token.line);
compiler.emitter.emitConstant(Value.from(strObj));
}
private void variable(Compiler* compiler, bool canAssign){
compiler.parser.namedVariable(compiler.parser.previous, canAssign);
}
struct ParseRule{
@ -117,7 +120,7 @@ immutable ParseRule[Token.Type.max+1] rules = [
Token.Type.GreaterEqual : ParseRule(null, &binary, Precedence.Comparison),
Token.Type.Less : ParseRule(null, &binary, Precedence.Comparison),
Token.Type.LessEqual : ParseRule(null, &binary, Precedence.Comparison),
Token.Type.Identifier : ParseRule(null, null, Precedence.None),
Token.Type.Identifier : ParseRule(&variable, null, Precedence.None),
Token.Type.String : ParseRule(&strlit, null, Precedence.None),
Token.Type.Number : ParseRule(&number, null, Precedence.None),
Token.Type.And : ParseRule(null, null, Precedence.None),