lynglib: added MiniAST support
lyngweb: better syntax highlighting and code editor
This commit is contained in:
sergeych committed
1 parent
28b961d339
commit
ea0ecb1db3
24 files changed
+3095
-218
No files matched your search
@@ -0,0 +1,392 @@
|
||||
/*
|
||||
* Copyright 2025 Sergey S. Chernov real.sergeych@gmail.com
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*
|
||||
*/
|
||||
|
||||
package net.sergeych.lyngweb
|
||||
|
||||
import kotlin.test.Test
|
||||
import kotlin.test.assertEquals
|
||||
|
||||
class EditorLogicTest {
|
||||
|
||||
private val tab = 4
|
||||
|
||||
@Test
|
||||
fun enter_after_only_rbrace_undents() {
|
||||
val line = " } " // 4 spaces, brace, trailing spaces; caret after last non-ws
|
||||
val res = applyEnter(line, line.length, line.length, tab)
|
||||
// Should insert newline with one indent level less (0 spaces here)
|
||||
assertEquals(" } \n" + "" , res.text.substring(0, res.text.indexOf('\n')+1))
|
||||
// After insertion caret should be at end of inserted indentation
|
||||
// Here indent was 4 and undented by 4 -> 0 spaces after newline
|
||||
val expectedCaret = line.length + 1 + 0
|
||||
assertEquals(expectedCaret, res.selStart)
|
||||
assertEquals(expectedCaret, res.selEnd)
|
||||
}
|
||||
|
||||
@Test
|
||||
fun enter_after_rbrace_with_only_spaces_to_eol_inserts_after_brace_and_dedents_and_undents_brace_line() {
|
||||
// Rule 5 exact check: last non-ws before caret is '}', remainder to EOL only spaces
|
||||
val indents = listOf(0, 4, 8)
|
||||
for (indent in indents) {
|
||||
val spaces = " ".repeat(indent)
|
||||
// Line ends with '}' followed by three spaces
|
||||
val before = (
|
||||
"""
|
||||
1
|
||||
${'$'}spaces}
|
||||
"""
|
||||
).trimIndent() + " "
|
||||
// Caret right after '}', before trailing spaces
|
||||
val caret = before.indexOf('}') + 1
|
||||
val res = applyEnter(before, caret, caret, tab)
|
||||
|
||||
val newBraceIndent = (indent - tab).coerceAtLeast(0)
|
||||
val newLineIndent = newBraceIndent
|
||||
val expected = buildString {
|
||||
append("1\n")
|
||||
append(" ".repeat(newBraceIndent))
|
||||
append("}\n")
|
||||
append(" ".repeat(newLineIndent))
|
||||
}
|
||||
assertEquals(expected, res.text)
|
||||
// Caret must be at start of the newly inserted line (after the final newline)
|
||||
assertEquals(expected.length, res.selStart)
|
||||
assertEquals(res.selStart, res.selEnd)
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
fun enter_after_rbrace_with_only_spaces_to_eol_crlf_and_undents_brace_line() {
|
||||
val indent = 4
|
||||
val spaces = " ".repeat(indent)
|
||||
val beforeLf = (
|
||||
"""
|
||||
1
|
||||
${'$'}spaces}
|
||||
"""
|
||||
).trimIndent() + " "
|
||||
val before = beforeLf.replace("\n", "\r\n")
|
||||
val caret = before.indexOf('}') + 1
|
||||
val res = applyEnter(before, caret, caret, tab)
|
||||
val actual = res.text.replace("\r\n", "\n")
|
||||
val newIndent = (indent - tab).coerceAtLeast(0)
|
||||
val expected = "1\n${" ".repeat(newIndent)}}\n${" ".repeat(newIndent)}"
|
||||
assertEquals(expected, actual)
|
||||
assertEquals(expected.length, res.selStart)
|
||||
assertEquals(res.selStart, res.selEnd)
|
||||
}
|
||||
|
||||
@Test
|
||||
fun enter_before_closing_brace_outdents() {
|
||||
val text = " }" // caret before '}' at index 4
|
||||
val caret = 4
|
||||
val res = applyEnter(text, caret, caret, tab)
|
||||
// Inserted a newline with indent reduced to 0
|
||||
assertEquals("\n" + "" + "}", res.text.substring(caret, caret + 2))
|
||||
val expectedCaret = caret + 1 + 0
|
||||
assertEquals(expectedCaret, res.selStart)
|
||||
assertEquals(expectedCaret, res.selEnd)
|
||||
}
|
||||
|
||||
@Test
|
||||
fun enter_between_braces_inserts_two_lines() {
|
||||
val text = "{}"
|
||||
val caret = 1 // between
|
||||
val res = applyEnter(text, caret, caret, tab)
|
||||
// Expect: "{\n \n}"
|
||||
assertEquals("{\n \n}", res.text)
|
||||
// Caret after first newline + 4 spaces
|
||||
assertEquals(1 + 1 + 4, res.selStart)
|
||||
assertEquals(res.selStart, res.selEnd)
|
||||
}
|
||||
|
||||
@Test
|
||||
fun enter_after_open_brace_increases_indent() {
|
||||
val text = "{"
|
||||
val caret = 1
|
||||
val res = applyEnter(text, caret, caret, tab)
|
||||
assertEquals("{\n ", res.text)
|
||||
assertEquals(1 + 1 + 4, res.selStart)
|
||||
}
|
||||
|
||||
@Test
|
||||
fun enter_after_rbrace_line_undents_ignoring_trailing_ws() {
|
||||
// Line contains only '}' plus trailing spaces; caret after last non-ws
|
||||
val line = " } "
|
||||
val res = applyEnter(line, line.length, line.length, tab)
|
||||
// Expect insertion of a newline and an undented indentation of (indent - tab)
|
||||
val expectedIndentAfterNewline = 0 // 4 - 4
|
||||
val expected = line + "\n" + " ".repeat(expectedIndentAfterNewline)
|
||||
// Compare prefix up to inserted indentation
|
||||
val prefix = res.text.substring(0, expected.length)
|
||||
assertEquals(expected, prefix)
|
||||
// Caret positioned at end of inserted indentation
|
||||
val expectedCaret = expected.length
|
||||
assertEquals(expectedCaret, res.selStart)
|
||||
assertEquals(expectedCaret, res.selEnd)
|
||||
}
|
||||
|
||||
@Test
|
||||
fun shift_tab_outdents_rbrace_only_line_no_newline() {
|
||||
// Multi-line: a block followed by a number; we outdent the '}' line only
|
||||
val text = " }\n3"
|
||||
// Place selection inside the first line
|
||||
val caret = 5 // after the '}'
|
||||
val res = applyShiftTab(text, caret, caret, tab)
|
||||
// Should become '}' on the first line, no extra blank lines
|
||||
assertEquals("}\n3", res.text)
|
||||
// Caret should move left by tabSize on that line (but not negative)
|
||||
val expectedCaret = (caret - tab).coerceAtLeast(0)
|
||||
assertEquals(expectedCaret, res.selStart)
|
||||
assertEquals(expectedCaret, res.selEnd)
|
||||
}
|
||||
|
||||
@Test
|
||||
fun shift_tab_outdents_without_newline() {
|
||||
val text = " a\n b"
|
||||
val res = applyShiftTab(text, 0, text.length, tab)
|
||||
assertEquals("a\nb", res.text)
|
||||
}
|
||||
|
||||
@Test
|
||||
fun tab_inserts_spaces() {
|
||||
val text = "x"
|
||||
val caret = 1
|
||||
val res = applyTab(text, caret, caret, tab)
|
||||
assertEquals("x ", res.text)
|
||||
assertEquals(1 + 4, res.selStart)
|
||||
}
|
||||
|
||||
@Test
|
||||
fun enter_before_line_with_only_rbrace_dedents_that_line() {
|
||||
// Initial content as reported by user before fix
|
||||
val before = (
|
||||
"""
|
||||
{
|
||||
1
|
||||
2
|
||||
3
|
||||
}
|
||||
1
|
||||
2
|
||||
3
|
||||
"""
|
||||
).trimIndent()
|
||||
|
||||
// Place caret at the end of the line that contains just " 3" (before the line with '}')
|
||||
val lines = before.split('\n')
|
||||
// Build index of end of the line with the last " 3"
|
||||
var idx = 0
|
||||
var caret = 0
|
||||
for (i in lines.indices) {
|
||||
val line = lines[i]
|
||||
if (line.trimEnd() == "3" && i + 1 < lines.size && lines[i + 1].trim() == "}") {
|
||||
caret = idx + line.length // position after '3', before the newline
|
||||
break
|
||||
}
|
||||
idx += line.length + 1 // +1 for newline
|
||||
}
|
||||
|
||||
val res = applyEnter(before, caret, caret, tab)
|
||||
|
||||
val expected = (
|
||||
"""
|
||||
{
|
||||
1
|
||||
2
|
||||
3
|
||||
}
|
||||
1
|
||||
2
|
||||
3
|
||||
"""
|
||||
).trimIndent()
|
||||
|
||||
assertEquals(expected, res.text)
|
||||
}
|
||||
|
||||
@Test
|
||||
fun enter_eol_before_brace_only_next_line_various_indents() {
|
||||
// Cover Rule 3 with LF newlines, at indents 0, 2, 4, 8
|
||||
val indents = listOf(0, 2, 4, 8)
|
||||
for (indent in indents) {
|
||||
val spaces = " ".repeat(indent)
|
||||
val before = (
|
||||
"""
|
||||
1
|
||||
2
|
||||
3
|
||||
${'$'}spaces}
|
||||
4
|
||||
"""
|
||||
).trimIndent()
|
||||
// Caret at end of the line with '3' (line before the rbrace-only line)
|
||||
val caret = before.indexOf("3\n") + 1 // just before LF
|
||||
val res = applyEnter(before, caret, caret, tab)
|
||||
|
||||
// The '}' line must be dedented by one block (clamped at 0) and caret moved to its start
|
||||
val expectedIndent = (indent - tab).coerceAtLeast(0)
|
||||
val expected = (
|
||||
"""
|
||||
1
|
||||
2
|
||||
3
|
||||
${'$'}{" ".repeat(expectedIndent)}}
|
||||
4
|
||||
"""
|
||||
).trimIndent()
|
||||
assertEquals(expected, res.text, "EOL before '}' dedent failed for indent=${'$'}indent")
|
||||
// Caret should be at start of that '}' line (line index 3)
|
||||
val lines = res.text.split('\n')
|
||||
var pos = 0
|
||||
for (i in 0 until 3) pos += lines[i].length + 1
|
||||
assertEquals(pos, res.selStart, "Caret pos mismatch for indent=${'$'}indent")
|
||||
assertEquals(pos, res.selEnd, "Caret pos mismatch for indent=${'$'}indent")
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
fun enter_eol_before_brace_only_next_line_various_indents_crlf() {
|
||||
// Same as above but with CRLF newlines
|
||||
val indents = listOf(0, 2, 4, 8)
|
||||
for (indent in indents) {
|
||||
val spaces = " ".repeat(indent)
|
||||
val beforeLf = (
|
||||
"""
|
||||
1
|
||||
2
|
||||
3
|
||||
${'$'}spaces}
|
||||
4
|
||||
"""
|
||||
).trimIndent()
|
||||
val before = beforeLf.replace("\n", "\r\n")
|
||||
val caret = before.indexOf("3\r\n") + 1 // at '3' index + 1 moves to end-of-line before CR
|
||||
val res = applyEnter(before, caret, caret, tab)
|
||||
|
||||
val expectedIndent = (indent - tab).coerceAtLeast(0)
|
||||
val expectedLf = (
|
||||
"""
|
||||
1
|
||||
2
|
||||
3
|
||||
${'$'}{" ".repeat(expectedIndent)}}
|
||||
4
|
||||
"""
|
||||
).trimIndent()
|
||||
assertEquals(expectedLf, res.text.replace("\r\n", "\n"), "CRLF case failed for indent=${'$'}indent")
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
fun enter_at_start_of_brace_only_line_at_cols_0_2_4() {
|
||||
val indents = listOf(0, 2, 4)
|
||||
for (indent in indents) {
|
||||
val spaces = " ".repeat(indent)
|
||||
val before = (
|
||||
"""
|
||||
1
|
||||
2
|
||||
${'$'}spaces}
|
||||
3
|
||||
"""
|
||||
).trimIndent()
|
||||
// Caret at start of the brace line
|
||||
val lines = before.split('\n')
|
||||
var caret = 0
|
||||
for (i in 0 until 2) caret += lines[i].length + 1
|
||||
caret += 0 // column 0 of brace line
|
||||
val res = applyEnter(before, caret, caret, tab)
|
||||
|
||||
// Expect the brace line to be dedented by one block, and a new line inserted before it
|
||||
val expectedIndent = (indent - tab).coerceAtLeast(0)
|
||||
val expected = (
|
||||
"""
|
||||
1
|
||||
2
|
||||
${'$'}{" ".repeat(expectedIndent)}
|
||||
${'$'}{" ".repeat(expectedIndent)}}
|
||||
3
|
||||
"""
|
||||
).trimIndent()
|
||||
assertEquals(expected, res.text, "Brace-line start enter failed for indent=${'$'}indent")
|
||||
// Caret must be at start of the inserted line, which has expectedIndent spaces
|
||||
val afterLines = res.text.split('\n')
|
||||
var pos = 0
|
||||
for (i in 0 until 3) pos += afterLines[i].length + 1
|
||||
// The inserted line is line index 2 (0-based), caret at its start
|
||||
pos -= afterLines[2].length + 1
|
||||
pos += 0
|
||||
assertEquals(pos, res.selStart, "Caret mismatch for indent=${'$'}indent")
|
||||
assertEquals(pos, res.selEnd, "Caret mismatch for indent=${'$'}indent")
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
fun enter_on_whitespace_only_line_keeps_same_indent() {
|
||||
val before = " \nnext" // line 0 has 4 spaces only
|
||||
val caret = 0 + 4 // at end of spaces, before LF
|
||||
val res = applyEnter(before, caret, caret, tab)
|
||||
// Default smart indent should keep indent = 4
|
||||
assertEquals(" \n \nnext", res.text)
|
||||
// Caret at start of the new blank line with 4 spaces
|
||||
assertEquals(1 + 4, res.selStart)
|
||||
assertEquals(res.selStart, res.selEnd)
|
||||
}
|
||||
|
||||
@Test
|
||||
fun enter_on_line_with_rbrace_else_lbrace_defaults_smart() {
|
||||
val text = " } else {"
|
||||
// Try caret positions after '}', before 'e', and after '{'
|
||||
val carets = listOf(5, 6, text.length)
|
||||
for (c in carets) {
|
||||
val res = applyEnter(text, c, c, tab)
|
||||
// Should not trigger special cases since line is not brace-only or only-spaces after '}'
|
||||
// Expect same indent (4 spaces)
|
||||
val expectedPrefix = text.substring(0, c) + "\n" + " ".repeat(4)
|
||||
assertEquals(expectedPrefix, res.text.substring(0, expectedPrefix.length))
|
||||
assertEquals(c + 1 + 4, res.selStart)
|
||||
assertEquals(res.selStart, res.selEnd)
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
fun enter_with_selection_replaces_and_uses_anchor_indent() {
|
||||
val text = (
|
||||
"""
|
||||
1
|
||||
2
|
||||
3
|
||||
"""
|
||||
).trimIndent()
|
||||
// Select "2\n3" starting at column 4 of line 1 (indent = 4)
|
||||
val idxLine0 = text.indexOf('1')
|
||||
val idxLine1 = text.indexOf('\n', idxLine0) + 1
|
||||
val selStart = idxLine1 + 4 // after 4 spaces
|
||||
val selEnd = text.length
|
||||
val res = applyEnter(text, selStart, selEnd, tab)
|
||||
val expected = (
|
||||
"""
|
||||
1
|
||||
|
||||
"""
|
||||
).trimIndent()
|
||||
assertEquals(expected, res.text)
|
||||
assertEquals(expected.length, res.selStart)
|
||||
assertEquals(res.selStart, res.selEnd)
|
||||
}
|
||||
}
|
||||
Reference in new issue
Block a user