From 50db01e623e6d03bcf02df1ba12be6a814de3dce Mon Sep 17 00:00:00 2001
From: "Eric S. Raymond" <esr@thyrsus,com>
Date: Wed, 18 Feb 2004 20:24:23 +0000
Subject: [PATCH] analyze function properly updates the error globals.

---
 mad | 29 +++++++++++++++--------------
 1 file changed, 15 insertions(+), 14 deletions(-)

diff --git a/mad b/mad
index eccd0fc..d71c52c 100755
--- a/mad
+++ b/mad
@@ -521,6 +521,7 @@ dummycount = 0		# Count of FOR VALUES statements
 def analyze():
     "Gather variable types and determine function boundaries."
     global deck, currentfunc, hasmain
+    global sourcefile, sourceline
     # We may need to generate a pseudo-function call
     for i in range(len(deck)):
         if deck[i][3][0] != 'remark':
@@ -530,22 +531,22 @@ def analyze():
         hasmain = True
     else:
         for i in range(len(deck)):
-            (file, line, label, statement) = deck[i]
+            (sourcefile, sourceline, label, statement) = deck[i]
             if statement[0] == 'end_function' and i < len(deck)-1 and deck[i+1][3][0] != 'extern':
-                deck.insert(i+1, (file, line, None, ('entry', 'main.', ())))
+                deck.insert(i+1, (sourcefile, sourceline, None, ('entry', 'main.', ())))
                 hasmain = True
     # Sanity check -- all labels in through statements must hit targwts
     labels = filter(lambda x: x, map(lambda x: x[2], deck))
-    for (file, line, label, statement) in deck:
+    for (sourcefile, sourceline, label, statement) in deck:
         if statement[0] == 'for':
             target = statement[1]
             if  not target in labels:
-                croak((file,line,label,statement),"no such label as "+`target`)
+                croak((sourcefile,sourceline,label,statement),"no such label as "+`target`)
                 sys.exit(1)
     # On to actual analysis
     try:
         # Mine the code for compile-time directives
-        for (file, line, label, statement) in deck:
+        for (sourcefile, sourceline, label, statement) in deck:
             if statement[0] == 'boolean':
                 for var in statement[1:]:
                     typedict[var] = 'bool'
@@ -554,7 +555,7 @@ def analyze():
                     dimensions[var] = dimlist
             elif statement[0] == 'entry':
                 currentfunc = statement[1]
-                funcline = line
+                funcline = sourceline
             elif statement[0] == 'integer':
                 for var in statement[1:]:
                     typedict[var] = 'int'
@@ -575,7 +576,7 @@ def analyze():
         savelist = []
         internalcount = 0
         for i in range(len(deck)):
-            (file, line, label, statement) = deck[i]
+            (sourcefile, sourceline, label, statement) = deck[i]
             if statement[0] == 'entry':
                 lastentry = i
                 internalcount = 1
@@ -591,17 +592,17 @@ def analyze():
         # Reorder code tuples so SET LIST arrays are global.
         firstentry = -1
         for i in range(len(deck)):
-            (file, line, label, statement) = deck[i]
+            (sourcefile, sourceline, label, statement) = deck[i]
             if statement[0] == 'entry' and firstentry == -1:
                 firstentry = i
             elif statement[0] == 'set_list_to':
                 deck.insert(firstentry, deck.pop(i))
         # Do type deductions from format fields
         for card in deck:
-            (file, line, label, statement) = card
+            (sourcefile, sourceline, label, statement) = card
             if statement[0] == 'entry':
                 currentfunc = statement[1]
-                funcline = line
+                funcline = sourceline
             elif statement[0] == 'read':
                 if statement[1] not in format:
                     croak(card, "uninitialized format string" +`statement[1]`)
@@ -621,11 +622,11 @@ def analyze():
         while True:
             deductions = 0
             for card in deck:
-                (file, line, label, statement) = card
+                (sourcefile, sourceline, label, statement) = card
                 if statement[0] == 'entry':
                     # Bookkeeping, so we know what function we're in
                     currentfunc = statement[1]
-                    funcline = line
+                    funcline = sourceline
                 elif statement[0] == 'return' and len(statement) > 1:
                     # Give the function the type of the last return statement.
                     # We're screwed if two different returns in a function have
@@ -650,13 +651,13 @@ def analyze():
                 break
         # Now associate entry point names with function definitions:
         for i in range(len(deck)):
-            (file, line, label, statement) = deck[i]
+            (sourcefile, sourceline, label, statement) = deck[i]
             if statement[0] == 'entry' and len(statement) == 2:
                 name = statement[1]
                 for j in range(i):
                     prev = deck[i-j-1][3]
                     if prev[0] == 'external_function':
-                        deck[i] = (file, line, label, ('entry', name, prev[1]))
+                        deck[i] = (sourcefile, sourceline, label, ('entry', name, prev[1]))
                         break
                     elif prev[0] == 'entry':
                         croak(deck[i-j-1],"multiple ENTRY points are not supported")
-- 
2.43.0