blueprintengineparser.java

来自「java jdk 1.4的源码」· Java 代码 · 共 1,111 行 · 第 1/3 页

                info.orientation = GTKConstants.HORIZONTAL;
                break;
            case SYM_VERTICAL:
                info.orientation = GTKConstants.VERTICAL;
                break;
            default:
                return SYM_HORIZONTAL;
        }
        
        return GTKScanner.TOKEN_NONE;
    }

    private int parseFile(String[] retVal) throws IOException {
        int token;

        token = scanner.getToken();
        
        token = scanner.getToken();
        if (token != GTKScanner.TOKEN_EQUAL_SIGN) {
            return GTKScanner.TOKEN_EQUAL_SIGN;
        }
        
        token = scanner.getToken();
        if (token != GTKScanner.TOKEN_STRING) {
            return GTKScanner.TOKEN_STRING;
        }

        retVal[0] = parser.resolvePixmapPath(scanner.currValue.stringVal);

        return GTKScanner.TOKEN_NONE;
    }

    private int parseStretch(boolean[] retVal) throws IOException {
        int token;
        
        token = scanner.getToken();
        
        token = scanner.getToken();
        if (token != GTKScanner.TOKEN_EQUAL_SIGN) {
            return GTKScanner.TOKEN_EQUAL_SIGN;
        }
        
        token = scanner.getToken();
        switch(token) {
            case SYM_TRUE:
                retVal[0] = true;
                break;
            case SYM_FALSE:
                retVal[0] = false;
                break;
            default:
                return SYM_TRUE;
        }
        
        return GTKScanner.TOKEN_NONE;
    }

    private int parseBorder(Insets[] retVal) throws IOException {
        int left = 0;
        int right = 0;
        int top = 0;
        int bottom = 0;
        
        scanner.getToken();
        
        if (scanner.getToken() != GTKScanner.TOKEN_EQUAL_SIGN) {
            return GTKScanner.TOKEN_EQUAL_SIGN;
        }
        
        if (scanner.getToken() != GTKScanner.TOKEN_LEFT_CURLY) {
            return GTKScanner.TOKEN_LEFT_CURLY;
        }
        
        if (scanner.getToken() != GTKScanner.TOKEN_INT) {
            return GTKScanner.TOKEN_INT;
        }
        
        left = (int)scanner.currValue.longVal;
        
        if (scanner.getToken() != GTKScanner.TOKEN_COMMA) {
            return GTKScanner.TOKEN_COMMA;
        }
        
        if (scanner.getToken() != GTKScanner.TOKEN_INT) {
            return GTKScanner.TOKEN_INT;
        }
        
        right = (int)scanner.currValue.longVal;
        
        if (scanner.getToken() != GTKScanner.TOKEN_COMMA) {
            return GTKScanner.TOKEN_COMMA;
        }
        
        if (scanner.getToken() != GTKScanner.TOKEN_INT) {
            return GTKScanner.TOKEN_INT;
        }
        
        top = (int)scanner.currValue.longVal;
        
        if (scanner.getToken() != GTKScanner.TOKEN_COMMA) {
            return GTKScanner.TOKEN_COMMA;
        }
        
        if (scanner.getToken() != GTKScanner.TOKEN_INT) {
            return GTKScanner.TOKEN_INT;
        }
        
        bottom = (int)scanner.currValue.longVal;
        
        if (scanner.getToken() != GTKScanner.TOKEN_RIGHT_CURLY) {
            return GTKScanner.TOKEN_RIGHT_CURLY;
        }

        retVal[0] = new Insets(top, left, bottom, right);

        return GTKScanner.TOKEN_NONE;
    }

    private int parseColorizeColor(Color[] retVal) throws IOException {
        int token;

        scanner.getToken();
        
        token = scanner.getToken();
        if (token != GTKScanner.TOKEN_EQUAL_SIGN) {
            return GTKScanner.TOKEN_EQUAL_SIGN;
        }
        
        token = scanner.getToken();

        switch(token) {
            case GTKScanner.TOKEN_LEFT_CURLY:
                int red;
                int green;
                int blue;
                int alpha = 255;

                token = scanner.getToken();
                if (token == GTKScanner.TOKEN_INT) {
                    red = intColorVal(scanner.currValue.longVal);
                } else if (token == GTKScanner.TOKEN_FLOAT) {
                    red = intColorVal(scanner.currValue.doubleVal);
                } else {
                    return GTKScanner.TOKEN_FLOAT;
                }
                
                token = scanner.getToken();
                if (token != GTKScanner.TOKEN_COMMA) {
                    return GTKScanner.TOKEN_COMMA;
                }

                token = scanner.getToken();
                if (token == GTKScanner.TOKEN_INT) {
                    green = intColorVal(scanner.currValue.longVal);
                } else if (token == GTKScanner.TOKEN_FLOAT) {
                    green = intColorVal(scanner.currValue.doubleVal);
                } else {
                    return GTKScanner.TOKEN_FLOAT;
                }

                token = scanner.getToken();
                if (token != GTKScanner.TOKEN_COMMA) {
                    return GTKScanner.TOKEN_COMMA;
                }

                token = scanner.getToken();
                if (token == GTKScanner.TOKEN_INT) {
                    blue = intColorVal(scanner.currValue.longVal);
                } else if (token == GTKScanner.TOKEN_FLOAT) {
                    blue = intColorVal(scanner.currValue.doubleVal);
                } else {
                    return GTKScanner.TOKEN_FLOAT;
                }

                token = scanner.getToken();
                if (token == GTKScanner.TOKEN_COMMA) {
                    token = scanner.getToken();
                    if (token == GTKScanner.TOKEN_INT) {
                        alpha = intColorVal(scanner.currValue.longVal);
                    } else if (token == GTKScanner.TOKEN_FLOAT) {
                        alpha = intColorVal(scanner.currValue.doubleVal);
                    } else {
                        return GTKScanner.TOKEN_FLOAT;
                    }
                    
                    token = scanner.getToken();
                }

                if (token != GTKScanner.TOKEN_RIGHT_CURLY) {
                    return GTKScanner.TOKEN_RIGHT_CURLY;
                }

                retVal[0] = new Color(red, green, blue, alpha);

                break;
            case GTKScanner.TOKEN_STRING:
                Color color = parseColorString(scanner.currValue.stringVal);

                if (color == null) {
                    scanner.printMessage("Invalid color constant '" +
                                              scanner.currValue.stringVal
                                              + "'", false);
                    return GTKScanner.TOKEN_STRING;
                }

                retVal[0] = color;

                break;
            default:
                return GTKScanner.TOKEN_STRING;
        }
        
        return GTKScanner.TOKEN_NONE;
    }

    private static Color parseColorString(String str) {
        if (str.charAt(0) == '#') {
            str = str.substring(1);

            int i = str.length();

            if (i < 3 || i > 12 || (i % 3) != 0) {
                return null;
            }

            i /= 3;

            int r;
            int g;
            int b;

            try {
                r = Integer.parseInt(str.substring(0, i), 16);
                g = Integer.parseInt(str.substring(i, i * 2), 16);
                b = Integer.parseInt(str.substring(i * 2, i * 3), 16);
            } catch (NumberFormatException nfe) {
                return null;
            }

            if (i == 4) {
                return new Color(r / 65535.0f, g / 65535.0f, b / 65535.0f);
            } else if (i == 1) {
                return new Color(r / 15.0f, g / 15.0f, b / 15.0f);
            } else if (i == 2) {
                return new Color(r, g, b);
            } else {
                return new Color(r / 4095.0f, g / 4095.0f, b / 4095.0f);
            }
        } else {
            return XColors.lookupColor(str);
        }
    }

    private static int intColorVal(long col) {
        int color = (int)Math.max(Math.min(col, 255), 0);
        return color;
    }

    private static int intColorVal(double col) {
        float color = (float)Math.max(Math.min(col, 1.0f), 0.0f);
        return (int)(color * 255);
    }

    private int parseIconColorize(BlueprintEngineInfo engineInfo) throws IOException {
        int token;

        token = scanner.getToken();
        if (token != SYM_ICON_COLORIZE) {
            return SYM_ICON_COLORIZE;
        }

        token = scanner.getToken();
        if (token != GTKScanner.TOKEN_EQUAL_SIGN) {
            return GTKScanner.TOKEN_EQUAL_SIGN;
        }

        token = scanner.getToken();
        if (token == SYM_TRUE) {
            engineInfo.iconColorize = true;
        } else if (token == SYM_FALSE) {
            engineInfo.iconColorize = false;
        } else {
            return SYM_TRUE;
        }

        return GTKScanner.TOKEN_NONE;
    }

    /**
     * Helper method for parsing string list assignments such as the following:
     * = {"FOO", "BAR", "SJH"}
     * The scanner is expected to start returning tokens at the equal sign when
     * this method is invoked. It will parse the strings in the list into the
     * given <code>ArrayList</code> parameter.
     *
     * NOTE: The <code>Strings</code> that are added to the
     *       <code>ArrayList</code> will have been <code>intern()</code>ed
     *       first.
     *
     * @return  <code>GTKScanner.TOKEN_NONE</code> if the parse was successful,
     *          otherwise the token that was expected but not received.
     */
    private int parseStringList(ArrayList list) throws IOException {
        int token;

        token = scanner.getToken();
        if (token != GTKScanner.TOKEN_EQUAL_SIGN) {
            return GTKScanner.TOKEN_EQUAL_SIGN;
        }

        token = scanner.getToken();
        if (token != GTKScanner.TOKEN_LEFT_CURLY) {
            return GTKScanner.TOKEN_LEFT_CURLY;
        }
        
        token = scanner.getToken();
        while (token == GTKScanner.TOKEN_STRING) {
            list.add(scanner.currValue.stringVal.intern());
            
            token = scanner.getToken();
            
            if (token == GTKScanner.TOKEN_RIGHT_CURLY) {
                continue;
            }
            
            if (token != GTKScanner.TOKEN_COMMA) {
                return GTKScanner.TOKEN_COMMA;
            }
            
            token = scanner.getToken();
        }
        
        if (token != GTKScanner.TOKEN_RIGHT_CURLY) {
            return GTKScanner.TOKEN_RIGHT_CURLY;
        }
        
        return GTKScanner.TOKEN_NONE;
    }

    private int parseUseAsBkgMask(BlueprintStyle.Info info) throws IOException {
        int token;

        token = scanner.getToken();
        if (token != SYM_USE_AS_BKG_MASK) {
            return SYM_USE_AS_BKG_MASK;
        }

        token = scanner.getToken();
        if (token != GTKScanner.TOKEN_EQUAL_SIGN) {
            return GTKScanner.TOKEN_EQUAL_SIGN;
        }

        token = scanner.getToken();
        switch(token) {
            case SYM_TRUE:
                info.useAsBkgMask = true;
                break;
            case SYM_FALSE:
                info.useAsBkgMask = false;
                break;
            default:
                return SYM_TRUE;
        }
        
        return GTKScanner.TOKEN_NONE;
    }

}