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Refactor bool exp synthesizer

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It's now more intelligent about generating IS NULL clauses. For example,
instead of 'LOWER(param) IS NULL' it now generates 'param IS NULL'.
This commit is contained in:
Zaid Abdulla committed 2021-09-16 13:27:37 -07:00
1 parent 7ae3bcdc0f
commit bc2d258f9c
5 files changed
+390 -252
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lib/common/expression.ts
+3 -11
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@@ -178,11 +178,11 @@ export function evaluateCallback(exp: Expression): Expression {
} else if (exp[0] === "IS NULL") {
if (isArray(exp[1])) return exp;
else if (exp[1] == null) return true;
else return null;
else return false;
} else if (exp[0] === "IS NOT NULL") {
if (isArray(exp[1])) return exp;
else if (exp[1] != null) return true;
else return null;
else return false;
} else if (exp[0] === "LIKE") {
if (isArray(exp[1]) || isArray(exp[2]) || isArray(exp[3])) return exp;
else if (
@@ -334,15 +334,7 @@ export async function evaluateAsync(
if (!isArray(e)) return e;
if (e[0] === "FUNC") {
if (e[1] === "NOW") {
if (now) return now;
} else if (e[1] === "UPPER") {
if (e[2] == null) return null;
if (!isArray(e[2])) return `${e[2]}`.toUpperCase();
} else if (e[1] === "LOWER") {
if (e[2] == null) return null;
if (!isArray(e[2])) return `${e[2]}`.toLowerCase();
}
if (e[1] === "NOW") if (now) return now;
} else if (e[0] === "PARAM") {
if (e[1] == null) return null;
if (obj && !isArray(e[1])) {