forked from Speiger/Primitive-Collections
90 lines
2.6 KiB
Java
90 lines
2.6 KiB
Java
package speiger.src.builder.base;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Set;
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import java.util.StringJoiner;
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import java.util.regex.Pattern;
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import speiger.src.builder.conditions.ICondition;
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import speiger.src.builder.misc.Tuple;
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public class ConditionedSegment
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{
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static final Pattern AND = Pattern.compile("(&&)");
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static final Pattern OR = Pattern.compile("(||)");
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int index;
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List<Tuple<ICondition, Segment>> segments = new ArrayList<>();
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public ConditionedSegment(int index)
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{
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this.index = index;
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}
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public void addSegment(ICondition condition, Segment segment)
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{
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segments.add(new Tuple<>(condition, segment));
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}
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public int build(Set<String> parsePool, StringBuilder builder, int baseIndex)
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{
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baseIndex += index;
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int length = builder.length();
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for(int i = 0,offset=0,m=segments.size();i<m;i++)
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{
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Tuple<ICondition, Segment> entry = segments.get(i);
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if(entry.getKey().isValid(parsePool))
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{
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offset += entry.getValue().build(parsePool, builder, baseIndex+offset);
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break;
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}
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}
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return builder.length() - length;
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}
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public static int parse(String currentLine, List<String> lines, int currentIndex, int startIndex, List<ConditionedSegment> segments) throws IllegalStateException
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{
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ConditionedSegment segment = new ConditionedSegment(startIndex);
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ICondition condition = ICondition.parse(currentLine);
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List<ConditionedSegment> childSegments = new ArrayList<>();
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StringJoiner segmentText = new StringJoiner("\n", "\n", "");
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for(int i = currentIndex+1;i<lines.size();i++)
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{
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String s = lines.get(i);
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String trimmed = s.trim();
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if(trimmed.startsWith("#"))
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{
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if(trimmed.startsWith("#else if"))
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{
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segment.addSegment(condition, new Segment(segmentText.toString(), childSegments));
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condition = ICondition.parse(trimmed.substring(8).trim());
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childSegments = new ArrayList<>();
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segmentText = new StringJoiner("\n", "\n", "");
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}
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else if(trimmed.startsWith("#else"))
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{
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segment.addSegment(condition, new Segment(segmentText.toString(), childSegments));
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condition = ICondition.ALWAYS_TRUE;
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childSegments = new ArrayList<>();
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segmentText = new StringJoiner("\n", "\n", "");
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}
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else if(trimmed.startsWith("#endif"))
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{
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segment.addSegment(condition, new Segment(segmentText.toString(), childSegments));
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segments.add(segment);
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return i - currentIndex;
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}
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else if(trimmed.startsWith("#if"))
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{
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i+= parse(trimmed.substring(3).trim(), lines, i, segmentText.length(), childSegments);
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}
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continue;
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}
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segmentText.add(s);
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}
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throw new IllegalStateException("Unclosed #If found!");
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}
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}
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