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Diffstat (limited to 'src/utils/lombok/javac/Javac.java')
-rw-r--r-- | src/utils/lombok/javac/Javac.java | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/src/utils/lombok/javac/Javac.java b/src/utils/lombok/javac/Javac.java new file mode 100644 index 00000000..cd24b061 --- /dev/null +++ b/src/utils/lombok/javac/Javac.java @@ -0,0 +1,139 @@ +/* + * Copyright © 2009-2011 Reinier Zwitserloot and Roel Spilker. + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ +package lombok.javac; + +import lombok.core.TransformationsUtil; + +import com.sun.tools.javac.tree.JCTree.JCExpression; +import com.sun.tools.javac.tree.JCTree.JCFieldAccess; +import com.sun.tools.javac.tree.JCTree.JCIdent; +import com.sun.tools.javac.tree.JCTree.JCLiteral; +import com.sun.tools.javac.tree.JCTree.JCVariableDecl; + +/** + * Container for static utility methods relevant to lombok's operation on javac. + */ +public class Javac { + private Javac() { + //prevent instantiation + } + + /** + * Translates the given field into all possible getter names. + * Convenient wrapper around {@link TransformationsUtil#toAllGetterNames(CharSequence, boolean)}. + */ + public static java.util.List<String> toAllGetterNames(JCVariableDecl field) { + CharSequence fieldName = field.name; + + boolean isBoolean = field.vartype.toString().equals("boolean"); + + return TransformationsUtil.toAllGetterNames(fieldName, isBoolean); + } + + /** + * @return the likely getter name for the stated field. (e.g. private boolean foo; to isFoo). + * + * Convenient wrapper around {@link TransformationsUtil#toGetterName(CharSequence, boolean)}. + */ + public static String toGetterName(JCVariableDecl field) { + CharSequence fieldName = field.name; + + boolean isBoolean = field.vartype.toString().equals("boolean"); + + return TransformationsUtil.toGetterName(fieldName, isBoolean); + } + + /** + * Translates the given field into all possible setter names. + * Convenient wrapper around {@link TransformationsUtil#toAllSetterNames(CharSequence, boolean)}. + */ + public static java.util.List<String> toAllSetterNames(JCVariableDecl field) { + CharSequence fieldName = field.name; + + boolean isBoolean = field.vartype.toString().equals("boolean"); + + return TransformationsUtil.toAllSetterNames(fieldName, isBoolean); + } + + /** + * @return the likely setter name for the stated field. (e.g. private boolean foo; to setFoo). + * + * Convenient wrapper around {@link TransformationsUtil#toSetterName(CharSequence, boolean)}. + */ + public static String toSetterName(JCVariableDecl field) { + CharSequence fieldName = field.name; + + boolean isBoolean = field.vartype.toString().equals("boolean"); + + return TransformationsUtil.toSetterName(fieldName, isBoolean); + } + + /** + * Checks if the given expression (that really ought to refer to a type expression) represents a primitive type. + */ + public static boolean isPrimitive(JCExpression ref) { + String typeName = ref.toString(); + return TransformationsUtil.PRIMITIVE_TYPE_NAME_PATTERN.matcher(typeName).matches(); + } + + /** + * Turns an expression into a guessed intended literal. Only works for literals, as you can imagine. + * + * Will for example turn a TrueLiteral into 'Boolean.valueOf(true)'. + */ + public static Object calculateGuess(JCExpression expr) { + if (expr instanceof JCLiteral) { + JCLiteral lit = (JCLiteral)expr; + if (lit.getKind() == com.sun.source.tree.Tree.Kind.BOOLEAN_LITERAL) { + return ((Number)lit.value).intValue() == 0 ? false : true; + } + return lit.value; + } else if (expr instanceof JCIdent || expr instanceof JCFieldAccess) { + String x = expr.toString(); + if (x.endsWith(".class")) x = x.substring(0, x.length() - 6); + else { + int idx = x.lastIndexOf('.'); + if (idx > -1) x = x.substring(idx + 1); + } + return x; + } else return null; + } + + /** + * Retrieves a compile time constant of type int from the specified class location. + * + * Solves the problem of compile time constant inlining, resulting in lombok having the wrong value + * (javac compiler changes private api constants from time to time) + * + * @param ctcLocation location of the compile time constant + * @param identifier the name of the field of the compile time constant. + */ + public static int getCtcInt(Class<?> ctcLocation, String identifier) { + try { + return (Integer)ctcLocation.getField(identifier).get(null); + } catch (NoSuchFieldException e) { + throw new RuntimeException(e); + } catch (IllegalAccessException e) { + throw new RuntimeException(e); + } + } +} |