dan/lang-surrealql
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Daniel Bulant 2024-02-18 12:17:09 +01:00
parent bd8728abdd
commit c1f38bace8
2 changed files with 33 additions and 19 deletions
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46
src/tokens.ts
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@ -125,7 +125,7 @@ const kwmap = new Map([
"outside",
"intersects",
"<", ">", "<=", ">=",
"@@", "@"
"@@"
], Comparison],
[["&&", "and"], And],
[["||", "or"], Or],
@ -205,7 +205,7 @@ function isAlphaNum(ch: number) {
return ch >= Ch.A && ch <= Ch.Z || ch >= Ch.a && ch <= Ch.z || ch >= Ch._0 && ch <= Ch._9 || ch == Ch.Underscore
}
function readWord(input: InputStream, result?: string) {
function readWord(input: InputStream, result: string) {
for (;;) {
if (input.next != Ch.Underscore && !isAlphaNum(input.next)) break
if (result != null) result += String.fromCharCode(input.next)
@ -224,23 +224,37 @@ export const tokens = new ExternalTokenizer((input, stack) => {
let {next} = input;
if(isAlpha(next)) {
input.advance()
let word = readWord(input, String.fromCharCode(next))
let word2: string | undefined = undefined
if (word != null) {
word = word.toLowerCase()
if(["is", "not"].includes(word)) {
// needs another word
skipSpaces(input)
word2 = readWord(input)
if(!word2) return;
word = word + " " + word2.toLowerCase()
let word = readWord(input, String.fromCharCode(next)).toLowerCase()
let word2;
if(["is", "not"].includes(word)) {
// needs another word
skipSpaces(input)
word2 = readWord(input, "")
if(!word2) return;
word = word + " " + word2.toLowerCase()
}
for(let [kws, token] of kwmap) {
if(kws.includes(word)) {
input.acceptToken(token)
return
}
for(let [kws, token] of kwmap) {
if(kws.includes(word)) {
input.acceptToken(token)
return
}
} else {
// no idea why this doesn't work generally, it fails the parser weirdly.
// so this is used for special character operators only
let str = String.fromCharCode(next).toLowerCase();
while(allkws.find(kw => kw.startsWith(str))) {
if(allkws.includes(str)) {
for(let [kws, token] of kwmap) {
if(kws.includes(str)) {
input.advance()
input.acceptToken(token)
return
}
}
}
input.advance()
str += String.fromCharCode(input.next).toLowerCase()
}
}
}, {contextual: false})

6
test.js
View file

@ -1,4 +1,4 @@
import {baseParser} from "./dist/index.js"
// console.log(baseParser.parse('select field from type::table($var) where $var > 1 and field2 @@ field1 timeout 10s').toString())
// console.log(baseParser.parse('select * from documents where contents @@ "test"').toString())
console.log(baseParser.parse('select * from documents').toString())
console.log(baseParser.parse('select field from type::table($var) where $var > 1 and field2 @1@ field1 timeout 10s').toString())
console.log(baseParser.parse('select * from documents where contents @@ "test"').toString())
console.log(baseParser.parse('select * from documents where test > 1').toString())