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EOLs are treated properly in the presence of comments and multiple whitespace tokens

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This commit is contained in:
Andrey Breslav
2011-01-02 17:00:52 +03:00
parent cd38e28e15
commit 3f82192a7c
4 changed files with 120 additions and 6 deletions
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idea/src/org/jetbrains/jet/lang/parsing/SemanticWhitespaceAwarePsiBuilderImpl.java
+16 -6
View File
@@ -4,6 +4,7 @@ package org.jetbrains.jet.lang.parsing;
import com.intellij.lang.PsiBuilder;
import com.intellij.psi.TokenType;
import com.intellij.psi.tree.IElementType;
import org.jetbrains.jet.lexer.JetTokens;
import java.util.Stack;
@@ -22,14 +23,23 @@ public class SemanticWhitespaceAwarePsiBuilderImpl extends PsiBuilderAdapter imp
public boolean eolInLastWhitespace() {
if (!eolsEnabled.peek()) return false;
if (eof()) return true;
IElementType previousToken = rawLookup(-1);
if (previousToken == TokenType.WHITE_SPACE) {
int previousTokenStart = rawTokenTypeStart(-1);
int previousTokenEnd = rawTokenTypeStart(0);
// TODO: maybe, memoize this somehow?
for (int i = 1; i <= getCurrentOffset(); i++) {
IElementType previousToken = rawLookup(-i);
if (previousToken == JetTokens.BLOCK_COMMENT
|| previousToken == JetTokens.DOC_COMMENT
|| previousToken == JetTokens.EOL_COMMENT) {
continue;
}
if (previousToken != TokenType.WHITE_SPACE) {
break;
}
int previousTokenStart = rawTokenTypeStart(-i);
int previousTokenEnd = rawTokenTypeStart(-i + 1);
assert previousTokenStart >= 0;
assert previousTokenEnd < getOriginalText().length();
for (int i = previousTokenStart; i < previousTokenEnd; i++) {
if (getOriginalText().charAt(i) == '\n') return true;
for (int j = previousTokenStart; j < previousTokenEnd; j++) {
if (getOriginalText().charAt(j) == '\n') return true;
}
}
return false;
idea/testData/psi/EOLsInComments.jet
+19
View File
@@ -0,0 +1,19 @@
fun foo() {
a
+ b
a
/** */+ b
a
/* */+ b
a /*
*/ + b
a
/*
*/ + b
a /**
*/ + b
a //
+ b
a //
+ b
}
idea/testData/psi/EOLsInComments.txt
+84
View File
@@ -0,0 +1,84 @@
JetFile: EOLsInComments.jet
NAMESPACE
FUN
PsiElement(fun)('fun')
PsiWhiteSpace(' ')
PsiElement(IDENTIFIER)('foo')
TYPE_PARAMETER_LIST
<empty list>
VALUE_PARAMETER_LIST
PsiElement(LPAR)('(')
PsiElement(RPAR)(')')
PsiWhiteSpace(' ')
BLOCK
PsiElement(LBRACE)('{')
PsiWhiteSpace('\n ')
PsiElement(IDENTIFIER)('a')
PsiWhiteSpace('\n ')
PREFIX_EXPRESSION
PsiElement(PLUS)('+')
PsiWhiteSpace(' ')
PsiElement(IDENTIFIER)('b')
PsiWhiteSpace('\n ')
PsiElement(IDENTIFIER)('a')
PsiWhiteSpace('\n ')
PsiComment(DOC_COMMENT)('/** */')
PREFIX_EXPRESSION
PsiElement(PLUS)('+')
PsiWhiteSpace(' ')
PsiElement(IDENTIFIER)('b')
PsiWhiteSpace('\n ')
PsiElement(IDENTIFIER)('a')
PsiWhiteSpace('\n ')
PsiComment(BLOCK_COMMENT)('/* */')
PREFIX_EXPRESSION
PsiElement(PLUS)('+')
PsiWhiteSpace(' ')
PsiElement(IDENTIFIER)('b')
PsiWhiteSpace('\n ')
BINARY_EXPRESSION
PsiElement(IDENTIFIER)('a')
PsiWhiteSpace(' ')
PsiComment(BLOCK_COMMENT)('/*\n */')
PsiWhiteSpace(' ')
PsiElement(PLUS)('+')
PsiWhiteSpace(' ')
PsiElement(IDENTIFIER)('b')
PsiWhiteSpace('\n ')
PsiElement(IDENTIFIER)('a')
PsiWhiteSpace('\n ')
PsiComment(BLOCK_COMMENT)('/*\n */')
PsiWhiteSpace(' ')
PREFIX_EXPRESSION
PsiElement(PLUS)('+')
PsiWhiteSpace(' ')
PsiElement(IDENTIFIER)('b')
PsiWhiteSpace('\n ')
BINARY_EXPRESSION
PsiElement(IDENTIFIER)('a')
PsiWhiteSpace(' ')
PsiComment(DOC_COMMENT)('/**\n */')
PsiWhiteSpace(' ')
PsiElement(PLUS)('+')
PsiWhiteSpace(' ')
PsiElement(IDENTIFIER)('b')
PsiWhiteSpace('\n ')
PsiElement(IDENTIFIER)('a')
PsiWhiteSpace(' ')
PsiComment(EOL_COMMENT)('//')
PsiWhiteSpace('\n ')
PREFIX_EXPRESSION
PsiElement(PLUS)('+')
PsiWhiteSpace(' ')
PsiElement(IDENTIFIER)('b')
PsiWhiteSpace('\n ')
PsiElement(IDENTIFIER)('a')
PsiWhiteSpace(' ')
PsiComment(EOL_COMMENT)('//')
PsiWhiteSpace('\n')
PREFIX_EXPRESSION
PsiElement(PLUS)('+')
PsiWhiteSpace(' ')
PsiElement(IDENTIFIER)('b')
PsiWhiteSpace('\n')
PsiElement(RBRACE)('}')
idea/tests/org/jetbrains/jet/parsing/JetParsingTest.java
+1
View File
@@ -38,6 +38,7 @@ public class JetParsingTest extends ParsingTestCase {
public void testDecomposers_ERR() throws Exception {doTest(true);}
public void testEmptyFile() throws Exception {doTest(true);}
public void testEnums() throws Exception {doTest(true);}
public void testEOLsInComments() throws Exception {doTest(true);}
public void testEOLsOnRollback() throws Exception {doTest(true);}
public void testExtensions() throws Exception {doTest(true);}
public void testExtensions_ERR() throws Exception {doTest(true);}