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bufio: make scanning bounded and incremental

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Hojun-Cho
2026-08-09 18:17:42 +09:00
parent 09b6f22e85
commit a04de3e02b
7 changed files with 362 additions and 139 deletions
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13
test/wcc/data/r700_bufio_scanline_discard/case.ww
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@@ -2,6 +2,7 @@
// Migrated from 700_e2e row 104.
package main;
import bufio;
import errors;
import io;
import memio;
fn main() i32 = {
@@ -14,26 +15,26 @@ fn main() i32 = {
let buf: [16]u8;
let sc: bufio.scanner = bufio.newscannerbuf(m, buf[0:16]);
let acc: i32 = 0;
let l1: (str | io.eof | io.error | bufio.overflow) = bufio.scanline(&sc);
let l1: (str | io.eof | io.error | errors.overflow) = bufio.scanline(&sc);
match (l1) {
case let s: str => acc += s.len;
case io.eof => acc += -100;
case let _e: io.error => acc += -1000;
case bufio.overflow => acc += -10000;
case errors.overflow => acc += -10000;
};
let l2: (str | io.eof | io.error | bufio.overflow) = bufio.scanline(&sc);
let l2: (str | io.eof | io.error | errors.overflow) = bufio.scanline(&sc);
match (l2) {
case let s: str => acc += s.len;
case io.eof => acc += -100;
case let _e: io.error => acc += -1000;
case bufio.overflow => acc += -10000;
case errors.overflow => acc += -10000;
};
let l3: (str | io.eof | io.error | bufio.overflow) = bufio.scanline(&sc);
let l3: (str | io.eof | io.error | errors.overflow) = bufio.scanline(&sc);
match (l3) {
case let s: str => acc += -100;
case io.eof => acc += 7;
case let _e: io.error => acc += -1000;
case bufio.overflow => acc += -10000;
case errors.overflow => acc += -10000;
};
return acc;
};