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1 Commits
or-skip-ri
...
times-init
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d64e597414 |
1
.gitignore
vendored
1
.gitignore
vendored
@@ -3,3 +3,4 @@ out/
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*.zip
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prg/**/*.ast
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prg/**/*.out
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prg/**/*.pins25
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@@ -1,12 +0,0 @@
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fun putstr(s)
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fun f1() =
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putstr("funkcija 1\n\00"),
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0
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fun f2() =
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putstr("funkcija 2\n\00"),
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0
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fun main() =
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f1() || f2()
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@@ -69,6 +69,10 @@ public record Token(Report.Location location, Symbol symbol, String lexeme) impl
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* Kljucna beseda {@code in}.
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*/
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IN,
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/**
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* Kljucna beseda {@code times}.
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*/
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TIMES,
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/**
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* Kljucna beseda {@code end}.
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*/
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@@ -227,10 +227,13 @@ public class CodeGen {
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@Override
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public List<PDM.CodeInstr> visit(AST.BinExpr binExpr, Mem.Frame frame) {
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Report.Location loc = attrAST.attrLoc.get(binExpr).location();
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Report.Locatable loc = attrAST.attrLoc.get(binExpr);
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List<PDM.CodeInstr> code = new ArrayList<>();
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code.addAll(binExpr.fstExpr.accept(this, frame));
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code.addAll(binExpr.sndExpr.accept(this, frame));
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PDM.OPER.Oper oper = switch (binExpr.oper) {
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case OR -> PDM.OPER.Oper.OR;
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case AND -> PDM.OPER.Oper.AND;
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@@ -247,35 +250,8 @@ public class CodeGen {
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case MOD -> PDM.OPER.Oper.MOD;
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};
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if (oper == PDM.OPER.Oper.OR) {
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String locStr = loc.begLine() + ":" + loc.begColumn();
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String rightLabel = "$or:right" + locStr;
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String skipLabel = "$or:skip@" + locStr;
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String endLabel = "$or:end@" + locStr;
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code.add(new PDM.OPER(oper, loc));
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code.addAll(binExpr.fstExpr.accept(this, frame));
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code.add(new PDM.NAME(skipLabel, loc));
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code.add(new PDM.NAME(rightLabel, loc));
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code.add(new PDM.CJMP(loc));
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code.add(new PDM.LABEL(rightLabel, loc));
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code.add(new PDM.PUSH(0, loc));
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code.addAll(binExpr.sndExpr.accept(this, frame));
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code.add(new PDM.OPER(oper, loc));
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code.add(new PDM.NAME(endLabel, loc));
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code.add(new PDM.UJMP(loc));
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code.add(new PDM.LABEL(skipLabel, loc));
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code.add(new PDM.PUSH(1, loc));
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code.add(new PDM.LABEL(endLabel, loc));
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} else {
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code.addAll(binExpr.fstExpr.accept(this, frame));
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code.addAll(binExpr.sndExpr.accept(this, frame));
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code.add(new PDM.OPER(oper, loc));
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}
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attrAST.attrCode.put(binExpr, code);
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return code;
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}
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@@ -319,6 +319,7 @@ public class LexAn implements AutoCloseable {
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case "let" -> Token.Symbol.LET;
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case "in" -> Token.Symbol.IN;
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case "end" -> Token.Symbol.END;
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case "times" -> Token.Symbol.TIMES;
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default -> null;
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};
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}
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@@ -360,9 +360,9 @@ public class SynAn implements AutoCloseable {
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private AST.AtomExpr parseIntegerConstantMultiplier() {
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Token token = lexAn.peekToken();
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if (token.symbol() == Token.Symbol.MUL) {
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// intconstmult -> MUL const
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check(Token.Symbol.MUL);
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if (token.symbol() == Token.Symbol.TIMES) {
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// intconstmult -> TIMES const
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check(Token.Symbol.TIMES);
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return parseConstant();
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}
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// intconstmult -> ε
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