Merge branch 'explain-assert' into master

[nit.git] / src / compiler / abstract_compiler.nit

diff --git a/src/compiler/abstract_compiler.nit b/src/compiler/abstract_compiler.nit
index 1a1bb07..08cdb07 100644 (file)
--- a/src/compiler/abstract_compiler.nit
+++ b/src/compiler/abstract_compiler.nit
@@ -25,6 +25,7 @@ private import annotation
 import mixin
 import counter
 import pkgconfig
+private import explain_assert_api
 
 # Add compiling options
 redef class ToolContext
@@ -3615,6 +3616,9 @@ redef class AAssertExpr
                var cond = v.expr_bool(self.n_expr)
                v.add("if (unlikely(!{cond})) \{")
                v.stmt(self.n_else)
+
+               explain_assert v
+
                var nid = self.n_id
                if nid != null then
                        v.add_abort("Assert '{nid.text}' failed")
@@ -3623,6 +3627,24 @@ redef class AAssertExpr
                end
                v.add("\}")
        end
+
+       # Explain assert if it fails
+       private fun explain_assert(v: AbstractCompilerVisitor)
+       do
+               var explain_assert_str = explain_assert_str
+               if explain_assert_str == null then return
+
+               var nas = v.compiler.modelbuilder.model.get_mclasses_by_name("NativeArray")
+               if nas == null then return
+
+               var expr = explain_assert_str.expr(v)
+               if expr == null then return
+
+               var cstr = v.send(v.get_property("to_cstring", expr.mtype), [expr])
+               if cstr == null then return
+
+               v.add "PRINT_ERROR(\"Runtime assert: %s\\n\", {cstr});"
+       end
 end
 
 redef class AOrExpr