(refs #7250) CHR rules modularization (first working version)

[simantics/platform.git] / bundles / org.simantics.scl.compiler / src / org / simantics / scl / compiler / internal / parsing / parser / SCLPostLexer.java

diff --git a/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/internal/parsing/parser/SCLPostLexer.java b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/internal/parsing/parser/SCLPostLexer.java
index 9cc1ff27b16a288afb11f138b9d8755a84f642d0..a2253d8b7bc001cc7d0889a5ab69a0a5885e7922 100644 (file)
--- a/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/internal/parsing/parser/SCLPostLexer.java
+++ b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/internal/parsing/parser/SCLPostLexer.java
@@ -3,6 +3,7 @@ package org.simantics.scl.compiler.internal.parsing.parser;
 import java.io.IOException;
 import java.util.Arrays;
 
+import org.simantics.scl.compiler.compilation.CompilationContext;
 import org.simantics.scl.compiler.errors.Locations;
 import org.simantics.scl.compiler.internal.parsing.Token;
 import org.simantics.scl.compiler.internal.parsing.exceptions.SCLSyntaxErrorException;
@@ -16,6 +17,9 @@ import gnu.trove.set.hash.TIntHashSet;
  * @author Hannu Niemistö
  */
 public class SCLPostLexer {
+    
+    private static final int PATCH_SIZE = 16;
+    private static final int INITIAL_QUEUE_SIZE = 32;
         
     public static TIntHashSet INDENTABLE = new TIntHashSet();
     public static TIntHashSet NO_SEMICOLON_BEFORE = new TIntHashSet();
@@ -49,7 +53,7 @@ public class SCLPostLexer {
     }
     
     SCLLexer lexer;
-    Token[] queue = new Token[16];
+    Token[] queue = new Token[INITIAL_QUEUE_SIZE];
     int queuePos=0, queueSize=0;
     TIntArrayList indentations = new TIntArrayList();
     TIntArrayList indentationTokens = new TIntArrayList();
@@ -58,6 +62,12 @@ public class SCLPostLexer {
     boolean firstTokenOfLine = true;
     private SCLParserOptions options;
     private boolean isFirstToken = true;
+    private CompilationContext context;
+    
+    /**
+     * We are parsing a module header and therefore should process tokens one by one and not by patches.
+     */
+    private boolean isInsideModule = false; 
             
     {
         indentations.add(0);
@@ -71,6 +81,11 @@ public class SCLPostLexer {
     public SCLPostLexer(java.io.Reader in) {
         this(new SCLLexer(in));
     }
+    
+    public void setCompilationContext(CompilationContext context) {
+        lexer.setCompilationContext(context);
+        this.context = context;
+    }
 
     public Token nextToken() throws Exception {
         while(queuePos == queueSize)
@@ -98,8 +113,15 @@ public class SCLPostLexer {
         queuePos = 0;
         queueSize = 0;
         
-        for(int i=0;i<8;++i)
+        for(int i=0;i<PATCH_SIZE;++i) {
             handleToken(lexer.nextToken());
+            if(isInsideModule) {
+                if(context.header == null)
+                    break;
+                else
+                    isInsideModule = false;
+            }
+        }
     }
     
     private SCLSyntaxErrorException error(int start, int end, String description) {
@@ -156,6 +178,7 @@ public class SCLPostLexer {
                 isFirstToken = false;
                 if(symbol.id == SCLTerminals.ID && symbol.text.equals("module") && options != null && options.isModule) {
                     push(new Token(SCLTerminals.MODULE, symbol.location, symbol.text));
+                    isInsideModule = true;
                     return;
                 }
             }