Merge branch 'master' into epec-kernel

23 files changed, 234 insertions, 47 deletions

diff --git a/testdata/modulecache-tests/README.txt b/testdata/modulecache-tests/README.txt
index 277cff8..214acc5 100644
--- a/testdata/modulecache-tests/README.txt
+++ b/testdata/modulecache-tests/README.txt
@@ -26,13 +26,6 @@ o Open use-mcad.scad
 o Compile (F5)
 o Check that you get a rounded box
 
-Test4: USE Non-existing file
-------
-
-o Open usenonexsistingfile.scad
-o Compile (F5)
-o Verify that you get: WARNING: Can't open 'use' file 'nofile.scad'.
-
 Test5: Overload USEd module
 ------
 
@@ -72,10 +65,62 @@ o Compile (F5) - Verify that you get a circular disc
 o Edit radius.scad: Change RADIUS
 o Compile (F5) - Verify that the disc changed size
 
-Test9: Circular include
+Test10: Circular include
 ------
 
 o Open circularincludemain.scad
 o Compile (F5)
 o Verify that OpenSCAD won't hang or crash
 
+Test11: Missing include file appears
+------
+o rm missing.scad
+o Open includemissing.scad
+o Compile (F5)
+o Verify that you get: WARNING: Can't open include file 'missing.scad'.
+o echo "module missing() { sphere(10); }" >  missing.scad
+o Reload and Compile (F4) - verify that the sphere appeared
+o rm missing.scad
+o Reload and Compile (F4) - verify that the sphere is still there
+o echo "module missing() { sphere(20); }" >  missing.scad
+o Reload and Compile (F4) - verify that the sphere increased in size
+
+Test12: Missing include file in subpath appears
+------
+o rm subdir/missingsub.scad
+o Open includemissingsub.scad
+o Compile (F5)
+o Verify that you get: WARNING: Can't open include file 'subdir/missingsub.scad'.
+o echo "module missingsub() { sphere(10); }" >  subdir/missingsub.scad
+o Reload and Compile (F4) - verify that the sphere appeared
+o rm subdir/missingsub.scad
+o Reload and Compile (F4) - verify that the sphere is still there
+o echo "module missingsub() { sphere(20); }" >  subdir/missingsub.scad
+o Reload and Compile (F4) - verify that the sphere increased in size
+
+Test13: Missing library file appears
+-------
+o rm missing.scad
+o Open usemissing.scad
+o Compile (F5)
+o Verify that you get: WARNING: Can't open library file 'missing.scad'.
+o echo "module missing() { sphere(10); }" >  missing.scad
+o Reload and Compile (F4) - verify that the sphere appeared
+o rm missing.scad
+o Reload and Compile (F4) - verify that the sphere is still there
+o echo "module missing() { sphere(20); }" >  missing.scad
+o Reload and Compile (F4) - verify that the sphere increased in size
+
+Test14: Automatic reload of cascading changes
+-------
+
+o ./cascade.sh
+o Open cascadetest.scad
+o Turn on Automatic Reload and Compile
+o Verify that the 4 objects render correctly
+o rm cascadetest.scad
+o Verify that no rerendering was triggered (the 4 objects are still there)
+o rm cascade*.scad
+o Verify that no rerendering was triggered (the 4 objects are still there)
+o ./cascade2.sh
+o Verify that everything reloads at once without flickering
diff --git a/testdata/modulecache-tests/cascade.sh b/testdata/modulecache-tests/cascade.sh
new file mode 100755
index 0000000..3193d06
--- /dev/null
+++ b/testdata/modulecache-tests/cascade.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+
+rm -f cascade*.scad
+echo "include <cascade-A.scad> include <cascade-B.scad> use <cascade-C.scad> use <cascade-D.scad> A(); translate([11,0,0]) B(); translate([22,0,0]) C(); translate([33,0,0]) D();" > cascadetest.scad
+sleep 0.05
+echo "module A() { sphere(5); }" > cascade-A.scad
+sleep 0.05
+echo "module B() { cube([8,8,8], center=true); }" > cascade-B.scad
+sleep 0.05
+echo "module C() { cylinder(h=8, r=5, center=true); }" > cascade-C.scad
+sleep 0.05
+echo "module D() { cylinder(h=10, r1=5, r2=0, center=true); }" > cascade-D.scad
diff --git a/testdata/modulecache-tests/cascade2.sh b/testdata/modulecache-tests/cascade2.sh
new file mode 100755
index 0000000..4969e6f
--- /dev/null
+++ b/testdata/modulecache-tests/cascade2.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+
+rm -f cascade-*.scad
+echo "include <cascade-A.scad> include <cascade-B.scad> use <cascade-C.scad> use <cascade-D.scad> A(); translate([11,0,0]) B(); translate([22,0,0]) C(); translate([33,0,0]) D();" > cascadetest.scad
+sleep 0.1
+echo "module A() { sphere(6); }" > cascade-A.scad
+sleep 0.1
+echo "module B() { cube([10,10,10], center=true); }" > cascade-B.scad
+sleep 0.1
+echo "module C() { cylinder(h=10, r=6, center=true); }" > cascade-C.scad
+sleep 0.1
+echo "module D() { cylinder(h=12, r1=6, r2=0, center=true); }" > cascade-D.scad
diff --git a/testdata/modulecache-tests/includemissing.scad b/testdata/modulecache-tests/includemissing.scad
new file mode 100644
index 0000000..d8a165f
--- /dev/null
+++ b/testdata/modulecache-tests/includemissing.scad
@@ -0,0 +1,2 @@
+include <missing.scad>
+missing();
diff --git a/testdata/modulecache-tests/includemissingsub.scad b/testdata/modulecache-tests/includemissingsub.scad
new file mode 100644
index 0000000..50acffe
--- /dev/null
+++ b/testdata/modulecache-tests/includemissingsub.scad
@@ -0,0 +1,2 @@
+include <subdir/missingsub.scad>
+missingsub();
diff --git a/testdata/modulecache-tests/usemissing.scad b/testdata/modulecache-tests/usemissing.scad
new file mode 100644
index 0000000..9f80b8b
--- /dev/null
+++ b/testdata/modulecache-tests/usemissing.scad
@@ -0,0 +1,2 @@
+use <missing.scad>
+missing();
diff --git a/testdata/scad/dxf/arc.scad b/testdata/scad/dxf/arc.scad
index fff70a3..f53b7bd 100644
--- a/testdata/scad/dxf/arc.scad
+++ b/testdata/scad/dxf/arc.scad
@@ -1 +1,2 @@
 import("../../dxf/arc.dxf");
+translate([110,0]) import("../../dxf/arc.dxf", $fn=0.1);
diff --git a/testdata/scad/dxf/circle.scad b/testdata/scad/dxf/circle.scad
index 8b5d132..edb9f77 100644
--- a/testdata/scad/dxf/circle.scad
+++ b/testdata/scad/dxf/circle.scad
@@ -1 +1,2 @@
 import("../../dxf/circle.dxf");
+translate([210,0,0]) import("../../dxf/circle.dxf", $fn=0.1);
diff --git a/testdata/scad/features/background-modifier.scad b/testdata/scad/features/background-modifier.scad
index 5430472..d67270e 100644
--- a/testdata/scad/features/background-modifier.scad
+++ b/testdata/scad/features/background-modifier.scad
@@ -3,3 +3,8 @@ difference() {
   %cylinder(h=30, r=6, center=true);
 }
 %if (true) cube([25,6,3], center=true);
+
+%translate([0,-9,0]) difference() {
+  color("green") cube([10,4,10], center=true);
+  color("red") translate([0,-2,0]) sphere(3);
+}
diff --git a/testdata/scad/features/circle-tests.scad b/testdata/scad/features/circle-tests.scad
index 6b54d55..90cd9f6 100644
--- a/testdata/scad/features/circle-tests.scad
+++ b/testdata/scad/features/circle-tests.scad
@@ -8,3 +8,4 @@ translate([6,-3,0]) circle(1, $fn=12);
 translate([0,-6,0]) circle(1, $fa=20, $fs=0.3);
 translate([3,-6,0]) circle(1, $fa=30, $fs=0.3);
 translate([6,-6,0]) circle(1, $fa=40, $fs=0.3);
+translate([3,-9,0]) circle(1, $fn=0.1);
diff --git a/testdata/scad/features/cylinder-tests.scad b/testdata/scad/features/cylinder-tests.scad
index 71f43a6..75b06f2 100644
--- a/testdata/scad/features/cylinder-tests.scad
+++ b/testdata/scad/features/cylinder-tests.scad
@@ -16,5 +16,5 @@ translate([22,11,0]) cylinder(h=15, r=5, r2=5);
 // tend to "abuse" this for captured nut slots
 translate([-10,0,0]) cylinder(h=2, r=3, $fn=6);
 
-
-// FIXME: We could test $fs, $fa, $fn as well
+// Test that we clamp number of sections to a minimum of 3
+translate([-10, -10, 0]) cylinder(r=3.5356, h=7.0711, $fn=0.1, center=true);
diff --git a/testdata/scad/features/highlight-and-background-modifier.scad b/testdata/scad/features/highlight-and-background-modifier.scad
index 5dca703..d97408b 100644
--- a/testdata/scad/features/highlight-and-background-modifier.scad
+++ b/testdata/scad/features/highlight-and-background-modifier.scad
@@ -1,10 +1,31 @@
 difference() {
   sphere(r=10);
   %#cylinder(h=30, r=6, center=true);
-  %#if (true) cube([6,25,3], center=true);
+  %#if (true) cube([25,6,3], center=true);
 }
-translate([13,0,0]) difference() {
-  sphere(r=10);
-  #%cylinder(h=30, r=6, center=true);
-  #%if (true) cube([6,25,3], center=true);
+%#translate([0,-9,0]) difference() {
+  color("green") cube([10,4,10], center=true);
+  color("red") translate([0,-2,0]) sphere(3);
+}
+%translate([13,0,0]){
+  difference() {
+    sphere(r=10);
+    cylinder(h=30, r=6, center=true);
+    if (true) cube([25,6,3], center=true);
+  }
+  #translate([0,-9,0]) difference() {
+    color("green") cube([10,4,10], center=true);
+    color("red") translate([0,-2,0]) sphere(3);
+  }
+}
+#translate([26,0,0]){
+  difference() {
+    sphere(r=10);
+    cylinder(h=30, r=6, center=true);
+    if (true) cube([25,6,3], center=true);
+  }
+  %translate([0,-9,0]) difference() {
+    color("green") cube([10,4,10], center=true);
+    color("red") translate([0,-2,0]) sphere(3);
+  }
 }
diff --git a/testdata/scad/features/highlight-modifier.scad b/testdata/scad/features/highlight-modifier.scad
index f228d08..2141f58 100644
--- a/testdata/scad/features/highlight-modifier.scad
+++ b/testdata/scad/features/highlight-modifier.scad
@@ -3,3 +3,8 @@ difference() {
   #cylinder(h=30, r=6, center=true);
 }
 #if (true) cube([25,6,3], center=true);
+
+#translate([0,-9,0]) difference() {
+  color("green") cube([10,4,10], center=true);
+  color("red") translate([0,-2,0]) sphere(3);
+}
diff --git a/testdata/scad/features/ifelse-tests.scad b/testdata/scad/features/ifelse-tests.scad
index d8c777b..3c72d55 100644
--- a/testdata/scad/features/ifelse-tests.scad
+++ b/testdata/scad/features/ifelse-tests.scad
@@ -1,5 +1,11 @@
-if (true) cube(2, true);
-else cylinder(r=1,h=2);
+if (true) {
+  cube(2, true);
+  translate([-3,0,0]) cube(2, true);
+}
+else {
+  cylinder(r=1,h=2);
+  translate([-3,0,0]) cylinder(r=1,h=2);
+}
 
 translate([3,0,0])
   if (false) cylinder(r=1,h=2);
diff --git a/testdata/scad/features/linear_extrude-tests.scad b/testdata/scad/features/linear_extrude-tests.scad
index 528eea2..680bf53 100644
--- a/testdata/scad/features/linear_extrude-tests.scad
+++ b/testdata/scad/features/linear_extrude-tests.scad
@@ -22,3 +22,6 @@ translate([-15,20,0]) linear_extrude(height=20, scale=[4,5,6]) square(10);
 translate([-10,5,0]) linear_extrude(height=15, scale=-2) square(10, center=true);
 // scale given as undefined
 translate([-15,-15,0]) linear_extrude(height=10, scale=var_undef) square(10);
+
+// height is negative
+translate([0,-25,0]) linear_extrude(-1) square(10, center=true);
diff --git a/testdata/scad/features/rotate_extrude-tests.scad b/testdata/scad/features/rotate_extrude-tests.scad
index 347bc78..010b7d2 100644
--- a/testdata/scad/features/rotate_extrude-tests.scad
+++ b/testdata/scad/features/rotate_extrude-tests.scad
@@ -28,3 +28,7 @@ translate([50,50,0]) {
     translate([-50,0,0]) cube([100,100,100], center=true);
   }
 }
+
+// Minimal $fn
+translate([0,-60,0]) rotate_extrude($fn=1) translate([20,0,0]) circle(r=10,$fn=1);
+
diff --git a/testdata/scad/features/sphere-tests.scad b/testdata/scad/features/sphere-tests.scad
index e666c1b..cc80738 100644
--- a/testdata/scad/features/sphere-tests.scad
+++ b/testdata/scad/features/sphere-tests.scad
@@ -8,3 +8,4 @@ translate([11,11,0]) sphere(5, $fn=15);
 translate([22,-11, 0]) sphere(5, $fa=20, $fs=0.3);
 translate([22,  0, 0]) sphere(5, $fa=30, $fs=0.3);
 translate([22, 11, 0]) sphere(5, $fa=40, $fs=0.3);
+translate([11, 22, 0]) sphere(5, $fn=0.1);
diff --git a/testdata/scad/minimal/allexpressions.scad b/testdata/scad/minimal/allexpressions.scad
new file mode 100644
index 0000000..f618c4b
--- /dev/null
+++ b/testdata/scad/minimal/allexpressions.scad
@@ -0,0 +1,30 @@
+a = true;
+b = false;
+c = undef;
+d = a;
+e = $fn;
+f1 = [1,,];
+f2 = [1,2,3];
+g = f2.x + f2.y + f2.z;
+h1 = [2:5];
+h2 = [1:2:10];
+i = h2.begin - h2.step - h2.end;
+j = "test";
+k = 1.23e-2;
+l = a * b;
+m = a / b;
+n = a % b;
+o = c < d;
+p = c <= d;
+q = c == d;
+r = c != d;
+s = c >= d;
+t = c > d;
+u = e && g;
+v = e || g;
+w = +i;
+x = -i;
+y = !i;
+z = (j);
+aa = k ? l : m;
+bb = n[o];
diff --git a/testdata/scad/minimal/allfunctions.scad b/testdata/scad/minimal/allfunctions.scad
index 2aebe54..b97f121 100644
--- a/testdata/scad/minimal/allfunctions.scad
+++ b/testdata/scad/minimal/allfunctions.scad
@@ -1,27 +1,28 @@
 a = abs();
-a = sign();
-a = rands();
-a = min();
-a = max();
-a = sin();
-a = cos();
-a = asin();
-a = acos();
-a = tan();
-a = atan();
-a = atan2();
-a = round();
-a = ceil();
-a = floor();
-a = pow();
-a = sqrt();
-a = exp();
-a = log();
-a = ln();
-a = str();
-a = lookup();
-a = dxf_dim();
-a = dxf_cross();
-a = version();
-a = version_num();
-a = len();
+b = sign();
+c = rands();
+d = min();
+e = max();
+f = sin();
+g = cos();
+h = asin();
+i = acos();
+j = tan();
+k = atan();
+l = atan2();
+m = round();
+n = ceil();
+o = floor();
+p = pow();
+q = sqrt();
+r = exp();
+s = log();
+t = ln();
+u = str();
+v = lookup();
+w = dxf_dim();
+x = dxf_cross();
+y = version();
+z = version_num();
+aa = len();
+bb = search();
diff --git a/testdata/scad/minimal/allmodules.scad b/testdata/scad/minimal/allmodules.scad
index 4395fd7..2e38d8f 100644
--- a/testdata/scad/minimal/allmodules.scad
+++ b/testdata/scad/minimal/allmodules.scad
@@ -2,12 +2,13 @@ minkowski();
 glide();
 subdiv();
 hull();
+resize();
 child();
 echo();
 assign();
 for();
 intersection_for();
-if(true) { }
+if(false) { cube(); } else { sphere(); }
 union();
 difference();
 intersection();
diff --git a/testdata/scad/misc/value-reassignment-tests.scad b/testdata/scad/misc/value-reassignment-tests.scad
index 475f78f..26afa03 100644
--- a/testdata/scad/misc/value-reassignment-tests.scad
+++ b/testdata/scad/misc/value-reassignment-tests.scad
@@ -1,4 +1,9 @@
+// Test reassignment which depends on a previously assigned variable,
+// as this could be messed up if order of assignment evaluation
+// changes
+
 myval = 2;
 i = 2;
-myval = i * 2;
-echo(myval);
+myval = i * 2; // This is not (yet) allowed as it will be evaluates in place of the first assignment
+echo(myval, i); // Should output undef, 2
+
diff --git a/testdata/scad/misc/value-reassignment-tests2.scad b/testdata/scad/misc/value-reassignment-tests2.scad
new file mode 100644
index 0000000..29a2fb7
--- /dev/null
+++ b/testdata/scad/misc/value-reassignment-tests2.scad
@@ -0,0 +1,16 @@
+// Test reassignment where another variable has used the previous
+// value before the reassignment. This could get messed up if order of
+// assignment evaluation changes
+
+myval = 2;
+i = myval;
+myval = 3;
+echo(myval, i); // Should output 3, 3
+
+// NB! This feels wrong, but it's a simulation of what happens
+// when overriding a variable on the cmd-line: openscad -Dmyval=3 myfile.scad
+// Since the intention is to override a top-level variable, the evaluation of the
+// new expression must be done in the same place as the old.
+// This is currently solved by appending the text given to the -D parameter to the end
+// of the main file.
+
diff --git a/testdata/scad/misc/variable-scope-tests.scad b/testdata/scad/misc/variable-scope-tests.scad
index 8426fbb..104d1a4 100644
--- a/testdata/scad/misc/variable-scope-tests.scad
+++ b/testdata/scad/misc/variable-scope-tests.scad
@@ -49,5 +49,16 @@ echo("undeclared variable can still be passed and used");
 module undeclared_var() {
   echo(d);
 }
-
 undeclared_var(d=6);
+
+echo("attempt to assign from a not-yet-defined variable which also exists globally");
+
+globalval = 1;
+// Test that b = a turns into b = 1, heeding the order of the assignments
+// See issue #399 for more discussion
+module global_lookup() {
+  b = globalval; // Should be assigned 1 since the local one isn't yet defined
+  globalval = 5; // Overrides the value for the local scope only
+  echo(globalval,b); // Should output 5, 1
+}
+global_lookup();