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path: root/crates/ide_assists/src/handlers/extract_function.rs
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-rw-r--r--crates/ide_assists/src/handlers/extract_function.rs64
1 files changed, 62 insertions, 2 deletions
diff --git a/crates/ide_assists/src/handlers/extract_function.rs b/crates/ide_assists/src/handlers/extract_function.rs
index 059414274..78a57fbdc 100644
--- a/crates/ide_assists/src/handlers/extract_function.rs
+++ b/crates/ide_assists/src/handlers/extract_function.rs
@@ -599,7 +599,12 @@ fn extraction_target(node: &SyntaxNode, selection_range: TextRange) -> Option<Fu
599 // we have selected a few statements in a block 599 // we have selected a few statements in a block
600 // so covering_element returns the whole block 600 // so covering_element returns the whole block
601 if node.kind() == BLOCK_EXPR { 601 if node.kind() == BLOCK_EXPR {
602 let body = FunctionBody::from_range(node.clone(), selection_range); 602 // Extract the full statements.
603 let statements_range = node
604 .children()
605 .filter(|c| selection_range.intersect(c.text_range()).is_some())
606 .fold(selection_range, |acc, c| acc.cover(c.text_range()));
607 let body = FunctionBody::from_range(node.clone(), statements_range);
603 if body.is_some() { 608 if body.is_some() {
604 return body; 609 return body;
605 } 610 }
@@ -610,7 +615,8 @@ fn extraction_target(node: &SyntaxNode, selection_range: TextRange) -> Option<Fu
610 // so we try to expand covering_element to parent and repeat the previous 615 // so we try to expand covering_element to parent and repeat the previous
611 if let Some(parent) = node.parent() { 616 if let Some(parent) = node.parent() {
612 if parent.kind() == BLOCK_EXPR { 617 if parent.kind() == BLOCK_EXPR {
613 let body = FunctionBody::from_range(parent, selection_range); 618 // Extract the full statement.
619 let body = FunctionBody::from_range(parent, node.text_range());
614 if body.is_some() { 620 if body.is_some() {
615 return body; 621 return body;
616 } 622 }
@@ -1785,6 +1791,60 @@ fn $0fun_name() -> i32 {
1785 } 1791 }
1786 1792
1787 #[test] 1793 #[test]
1794 fn extract_partial_block_single_line() {
1795 check_assist(
1796 extract_function,
1797 r#"
1798fn foo() {
1799 let n = 1;
1800 let mut v = $0n * n;$0
1801 v += 1;
1802}"#,
1803 r#"
1804fn foo() {
1805 let n = 1;
1806 let mut v = fun_name(n);
1807 v += 1;
1808}
1809
1810fn $0fun_name(n: i32) -> i32 {
1811 let mut v = n * n;
1812 v
1813}"#,
1814 );
1815 }
1816
1817 #[test]
1818 fn extract_partial_block() {
1819 check_assist(
1820 extract_function,
1821 r#"
1822fn foo() {
1823 let m = 2;
1824 let n = 1;
1825 let mut v = m $0* n;
1826 let mut w = 3;$0
1827 v += 1;
1828 w += 1;
1829}"#,
1830 r#"
1831fn foo() {
1832 let m = 2;
1833 let n = 1;
1834 let (mut v, mut w) = fun_name(m, n);
1835 v += 1;
1836 w += 1;
1837}
1838
1839fn $0fun_name(m: i32, n: i32) -> (i32, i32) {
1840 let mut v = m * n;
1841 let mut w = 3;
1842 (v, w)
1843}"#,
1844 );
1845 }
1846
1847 #[test]
1788 fn argument_form_expr() { 1848 fn argument_form_expr() {
1789 check_assist( 1849 check_assist(
1790 extract_function, 1850 extract_function,