Remove FunctionType (#2510)

Function signatures were previously redundantly stored on Function
objects as well as on FunctionType objects. These two signature
representations had to always be kept in sync, which was error-prone
and needlessly complex. This PR takes advantage of the new ability of
Type to represent multiple value types by consolidating function
signatures as a pair of Types (params and results) stored on the
Function object.

Since there are no longer module-global named function types,
significant changes had to be made to the printing and emitting of
function types, as well as their parsing and manipulation in various
passes.

The C and JS APIs and their tests also had to be updated to remove
named function types.

1 files changed, 2 insertions, 1 deletions

diff --git a/scripts/clean_c_api_trace.py b/scripts/clean_c_api_trace.py
index 006a0ce4f..6fcd5d4ae 100755
--- a/scripts/clean_c_api_trace.py
+++ b/scripts/clean_c_api_trace.py
@@ -22,8 +22,9 @@ import sys
 trace = open(sys.argv[1]).read()
 
 start = trace.find('// beginning a Binaryen API trace')
+end = trace.rfind('// ending a Binaryen API trace')
 if start >= 0:
-    trace = trace[start:]
+    trace = trace[start:end]
 
     while 1:
         start = trace.find('\n(')