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-rw-r--r--src/llex.js35
1 files changed, 30 insertions, 5 deletions
diff --git a/src/llex.js b/src/llex.js
index dab384d..711f44b 100644
--- a/src/llex.js
+++ b/src/llex.js
@@ -73,17 +73,42 @@ const luaX_tokens = [
const NUM_RESERVED = Object.keys(RESERVED).length;
class MBuffer {
- constructor(data) {
- this.buffer = typeof data === "string" ? data.split('') : (data ? data : []);
- this.n = this.buffer instanceof DataView ? this.buffer.byteLength : this.buffer.length;
+ constructor(L, data, reader) {
+ this.L = L;
+ this.data = data;
+ this.n = 0;
+ this.buffer = null;
this.off = 0;
+ this.reader = reader ? reader : null;
+
+ if (!this.reader) {
+ this.buffer = typeof data === "string" ? data.split('') : (data ? data : []);
+ this.n = this.buffer instanceof DataView ? this.buffer.byteLength : this.buffer.length;
+ this.off = 0;
+ }
}
getc() {
if (this.buffer instanceof DataView)
- return this.n-- > 0 ? this.buffer.getUint8(this.off++, true) : -1;
+ return this.n-- > 0 ? this.buffer.getUint8(this.off++, true) : this.fill();
+
+ return this.n-- > 0 ? this.buffer[this.off++] : this.fill();
+ }
+
+ fill() {
+ if (this.reader) {
+ this.buffer = this.reader(this.L, this.data);
+ this.buffer = typeof this.buffer === "string" ? this.buffer.split('') : this.buffer;
+ if (this.buffer === null)
+ return -1;
+ this.n = this.buffer instanceof DataView ? this.buffer.byteLength - 1 : this.buffer.length - 1;
+ this.off = 0;
+ } else return -1;
+
+ if (this.buffer instanceof DataView)
+ return this.buffer.getUint8(this.off++, true);
- return this.n-- > 0 ? this.buffer[this.off++] : -1;
+ return this.buffer[this.off++];
}
}