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nora 2024-11-23 00:04:53 +01:00
parent 923e6f2352
commit 767cebafd8
2 changed files with 21 additions and 3 deletions
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22
index.js
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@ -103,7 +103,8 @@ function lex(input) {
case "{":
case "}":
case ",":
case ";": {
case ";":
case "+": {
tokens.push({
kind: head,
span: i - 1,
@ -258,8 +259,23 @@ function parse(tokens) {
return lhs;
}
const parseLogicalAnd = generateBinaryParser(["&&"], parsePostfix);
const parseMultiplicative = generateBinaryParser(
["*", "/", "%"],
parsePostfix
);
const parseAdditive = generateBinaryParser(["+", "-"], parseMultiplicative);
const parseShift = generateBinaryParser(["<<", ">>"], parseAdditive);
const parseRelational = generateBinaryParser(
["<", ">", "<=", ">="],
parseShift
);
const parseEquality = generateBinaryParser(["==", "!="], parseRelational);
const parseAnd = generateBinaryParser(["&"], parseEquality);
const parseExclusiveOr = generateBinaryParser(["^"], parseAnd);
const parseInclusiveOr = generateBinaryParser(["|"], parseExclusiveOr);
const parseLogicalAnd = generateBinaryParser(["&&"], parseInclusiveOr);
const parseLogicalOr = generateBinaryParser(["||"], parseLogicalAnd);
// TODO conditional operator
const parseAssignment = generateBinaryParser(
["=", "*=", "/=", "%=", "+=", "-=", "<<=", ">>=", "&=", , "^=", "|="],
parseLogicalOr
@ -516,6 +532,8 @@ function lower(ast) {
break;
}
case "+": {
codegenExpr(ib, expr.rhs);
assert(false);
}
default: {
throw new Error(`unsupported expr: ${expr.kind}`);