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source map else

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This commit is contained in:
SimonFJ20 2024-12-17 10:24:18 +01:00
parent e581c245bd
commit f90fcd431f
4 changed files with 6 additions and 5 deletions
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2
compiler/ast.ts
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@ -45,7 +45,7 @@ export type ExprKind =
| { type: "call"; subject: Expr; args: Expr[] } | { type: "call"; subject: Expr; args: Expr[] }
| { type: "unary"; unaryType: UnaryType; subject: Expr } | { type: "unary"; unaryType: UnaryType; subject: Expr }
| { type: "binary"; binaryType: BinaryType; left: Expr; right: Expr } | { type: "binary"; binaryType: BinaryType; left: Expr; right: Expr }
| { type: "if"; cond: Expr; truthy: Expr; falsy?: Expr } | { type: "if"; cond: Expr; truthy: Expr; falsy?: Expr; elsePos?: Pos }
| { type: "bool"; value: boolean } | { type: "bool"; value: boolean }
| { type: "null" } | { type: "null" }
| { type: "loop"; body: Expr } | { type: "loop"; body: Expr }

2
compiler/compiler.ts
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@ -47,7 +47,7 @@ export class Compiler {
const lowerer = new Lowerer(lexer.currentPos()); const lowerer = new Lowerer(lexer.currentPos());
lowerer.lower(ast); lowerer.lower(ast);
lowerer.printProgram(); // lowerer.printProgram();
const { program, fnNames } = lowerer.finish(); const { program, fnNames } = lowerer.finish();
return { program, fnNames }; return { program, fnNames };

2
compiler/lowerer.ts
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@ -490,7 +490,7 @@ export class Lowerer {
this.program.setLabel(falseLabel); this.program.setLabel(falseLabel);
if (expr.kind.falsy) { if (expr.kind.falsy) {
this.addSourceMap(expr.kind.falsy.pos); this.addSourceMap(expr.kind.elsePos!);
this.lowerExpr(expr.kind.falsy); this.lowerExpr(expr.kind.falsy);
} else { } else {
this.program.add(Ops.PushNull); this.program.add(Ops.PushNull);

5
compiler/parser.ts
View File

@ -456,17 +456,18 @@ export class Parser {
if (!this.test("else")) { if (!this.test("else")) {
return this.expr({ type: "if", cond, truthy }, pos); return this.expr({ type: "if", cond, truthy }, pos);
} }
const elsePos = this.pos();
this.step(); this.step();
if (this.test("if")) { if (this.test("if")) {
const falsy = this.parseIf(); const falsy = this.parseIf();
return this.expr({ type: "if", cond, truthy, falsy }, pos); return this.expr({ type: "if", cond, truthy, falsy, elsePos }, pos);
} }
if (!this.test("{")) { if (!this.test("{")) {
this.report("expected block"); this.report("expected block");
return this.expr({ type: "error" }, pos); return this.expr({ type: "error" }, pos);
} }
const falsy = this.parseBlock(); const falsy = this.parseBlock();
return this.expr({ type: "if", cond, truthy, falsy }, pos); return this.expr({ type: "if", cond, truthy, falsy, elsePos }, pos);
} }
private parseBinary(): Expr { private parseBinary(): Expr {