More string literals getters.

pkg/analyzer/lib/src/generated/ast.dart

Index: pkg/analyzer/lib/src/generated/ast.dart
diff --git a/pkg/analyzer/lib/src/generated/ast.dart b/pkg/analyzer/lib/src/generated/ast.dart
index dd0bcb03a71f5fb271e0e5e922ea116b645ef41c..c22a1fb080144902eb399a7795b3bab9481be78e 100644
--- a/pkg/analyzer/lib/src/generated/ast.dart
+++ b/pkg/analyzer/lib/src/generated/ast.dart
@@ -16045,11 +16045,7 @@ class SimpleStringLiteral extends SingleStringLiteral {
    */
   String get value => _value;
 
-  /**
-   * Return `true` if this string literal is a multi-line string.
-   *
-   * @return `true` if this string literal is a multi-line string
-   */
+  @override
   bool get isMultiline {
     String lexeme = literal.lexeme;
     if (lexeme.length < 6) {
@@ -16058,9 +16054,16 @@ class SimpleStringLiteral extends SingleStringLiteral {
     return StringUtilities.endsWith3(lexeme, 0x22, 0x22, 0x22) || StringUtilities.endsWith3(lexeme, 0x27, 0x27, 0x27);
   }
 
+  @override
   bool get isRaw => literal.lexeme.codeUnitAt(0) == 0x72;
 
   @override
+  bool get isSingleQuoted {
+    String lexeme = literal.lexeme;
+    return StringUtilities.endsWithChar(lexeme, 0x27);

[Paul Berry, 2014/10/07 13:18:04]

Would it be better to check the beginning of the string rather than the end? 
This check will yield the wrong result if the string is unterminated.

[Brian Wilkerson, 2014/10/07 14:12:04]

isMultiline (on line 16049) has the same potential problem. We might want to
re-write it to check the start of the string as well. The reason I didn't
originally was to avoid having to handle raw strings differently.

[scheglov, 2014/10/07 15:37:56]

Done.

[scheglov, 2014/10/07 15:37:56]

Done.

+  }
+
+  @override
   bool get isSynthetic => literal.isSynthetic;
 
   /**
@@ -16181,7 +16184,26 @@ class StringInterpolation extends SingleStringLiteral {
   }
 
   @override
+  bool get isMultiline {
+    InterpolationString element = _elements.last;
+    String lexeme = element._contents.lexeme;
+    if (lexeme.length < 6) {
+      return false;
+    }
+    return StringUtilities.endsWith3(lexeme, 0x22, 0x22, 0x22) ||

[Paul Berry, 2014/10/07 13:18:04]

Similar concern here.

[scheglov, 2014/10/07 15:37:56]

Done.

+        StringUtilities.endsWith3(lexeme, 0x27, 0x27, 0x27);
+  }
+
+  @override
   bool get isRaw => false;
+
+
+  @override
+  bool get isSingleQuoted {
+    InterpolationString lastString = _elements.last;
+    String lexeme = lastString._contents.lexeme;
+    return StringUtilities.endsWithChar(lexeme, 0x27);

[Paul Berry, 2014/10/07 13:18:04]

And here.

[scheglov, 2014/10/07 15:37:56]

Done.

+  }
 }
 
 /**
@@ -16243,9 +16265,20 @@ abstract class SingleStringLiteral extends StringLiteral {
   int get contentsEnd;
 
   /**
+   * Return `true` if this string literal is a multi-line string.
+   */
+  bool get isMultiline;
+
+  /**
    * Return `true` if this string literal is a raw string.
    */
   bool get isRaw;
+
+  /**
+   * Return `true` if this string literal uses single qoutes (' or ''').
+   * Return `false` if this string literal uses double qoutes (" or """).
+   */
+  bool get isSingleQuoted;
 }
 
 /**