tdf#120413 LibreLogo: handle complex Logo expressions

Instead of the incomplete heuristic parenthesis expansion,
now expressions with Logo functions and with own
procedures are parsed completely, solving several issues
with complex Logo expressions. For example, now functions with
more than 1 argument don't need explicit parenthesization.

NOTE: to handle both Logo and Python syntaxes of function calls,
we differentiate the forms "f(x)" and "f (x)". The second form
is handled as Logo syntax, not the Python one:

f x*2 y z     -> f(x*2, y, z)
f(x*2, x, z)  -> f(x*2, y, z)
f (x*2) y z   -> f((x*2), y, z)

so if you want to avoid of the following expansion:

sin 45 + cos 45   -> sin(45 + cos(45))

it's possible to use the following parenthesizations:

sin(45) + cos 45  -> sin(45) + cos(45)
(sin 45) + cos 45 -> (sin(45)) + cos(45)

but not

sin (45) + cos 45 -> sin((45) + cos(45))

Change-Id: Ib0602b47b8b678a352313f471599d44d6904ce17
Reviewed-on: https://gerrit.libreoffice.org/62901
Tested-by: Jenkins
Reviewed-by: László Németh <nemeth@numbertext.org>

sw/qa/uitest/librelogo/compile.py

@@ -80,7 +80,7 @@ class LibreLogoCompileTest(UITestCase):
                 ("TO x\nOUTPUT 3\nEND", "global x\ndef x():\n __checkhalt__()\n %s\n return 3\n %s" % (((self.LS),)*2)),
                 # PROCEDURE WITH ARGUMENTS
                 ("TO x y\nLABEL y\nEND\nx 25", "global x\ndef x(y):\n __checkhalt__()\n %s\n label(y)\n %s\n%s\nx(25)" % (((self.LS),)*3)),
-                ("TO x :y :z\nLABEL :y + :z\nEND\nx 25", "global x\ndef x(_y, _z):\n __checkhalt__()\n %s\n label(_y + _z)\n %s\n%s\nx(25)" % (((self.LS),)*3)),
+                ("TO x :y :z\nLABEL :y + :z\nEND\nx 25 26", "global x\ndef x(_y, _z):\n __checkhalt__()\n %s\n label(_y + _z)\n %s\n%s\nx(25, 26)" % (((self.LS),)*3)),
                 # UNICODE VARIABLE NAMES
                 ("Erdős=1", "Erd__u__0151s=1"),
                 # STRING CONSTANTS
@@ -88,9 +88,37 @@ class LibreLogoCompileTest(UITestCase):
                 ("LABEL “label”", "label(u'label')"),
                 ("LABEL 'label'", "label(u'label')"),
                 ("LABEL ‘label’", "label(u'label')"),
+                # check apostrophe and quote usage within strings
                 ("LABEL “label\’s”", "label(u'label’s')"),
                 ("LABEL ““It\’s quote\’s...\””", "label(u'“It’s quote’s...”')"),
                 ("LABEL ““It\\'s quote\\'s...\””", "label(u'“It\\'s quote\\'s...”')"),
+                # CONVERSION OF LOGO EXPRESSIONS
+                ("a=SIN 100 + COS 100", "a=sin(100 + cos(100))"),
+                ("a=SIN(101) + COS(101)", "a=sin(101) + cos(101)"),
+                ("a=(SIN 102) + (COS 102)", "a=(sin(102)) + (cos(102))"),
+                ("a=SIN 103 + COS 103 - SQRT 103", "a=sin(103 + cos(103 - sqrt(103)))"),
+                ("a=(SIN 104 + COS 104) - SQRT 104", "a=(sin(104 + cos(104))) - sqrt(104)"),
+                ("a=COUNT [1, 2, 3]", "a=len([1, 2, 3])"),
+                ("PRINT COUNT [1, 2, 3]", "Print(len([1, 2, 3]))"),
+                ("PRINT 'TEXT: ' + 'CHAR'[0] + ' TEXT2: ' + variable[-1]", "Print(u'TEXT: ' + u'CHAR'[0] + u' TEXT2: ' + variable[-1])"),
+                ("PRINT 'TEXT: ' + 'CHAR'[0][n] + ' TEXT2: ' + varia[len k][i+1]", "Print(u'TEXT: ' + u'CHAR'[0][n] + u' TEXT2: ' + varia[len(k)][i+1])"),
+                ("a=SQRT COUNT [1, 2, 3]", "a=sqrt(len([1, 2, 3]))"),
+                ("a=RANGE 1", "a=range(1,)"),
+                ("a=RANGE 1 10", "a=range(1, 10,)"),
+                ("a=RANGE 1 10 5", "a=range(1, 10, 5)"),
+                ("a=RANDOM 40 + 120", "a=Random(40 + 120)"),
+                ("a=RANDOM(40) + 120", "a=Random(40) + 120"),
+                ("a=RANDOM [1, 2, 3]", "a=Random([1, 2, 3])"),
+                ("a=[sin 90 + cos 15, cos 100 * x, sqrt 25 * 25]", "a=[sin(90 + cos(15)), cos(100 * x), sqrt(25 * 25)]"),
+                ("a=[sin 90 + cos 15, cos 100 * x, sqrt 25 * 25]", "a=[sin(90 + cos(15)), cos(100 * x), sqrt(25 * 25)]"),
+                ("a=[sin(90) + cos 15, cos(100) * x, sqrt(25) * 25]", "a=[sin(90) + cos(15), cos(100) * x, sqrt(25) * 25]"),
+                ("TO x y z\nOUTPUT 3\nEND", "global x\ndef x(y, z):\n __checkhalt__()\n %s\n return 3\n %s" % (((self.LS),)*2)),
+                ("TO x\nOUTPUT 3\nEND", "global x\ndef x():\n __checkhalt__()\n %s\n return 3\n %s" % (((self.LS),)*2)),
+                ("TO f x y z\nOUTPUT x+y+z\nEND\na = [-sin -len f [-cos 45, 6] -len [1, 2, 3] -sin -90", "global f\ndef f(x, y, z):\n __checkhalt__()\n %s\n return x+y+z\n %s\n%s\na = [-sin(-len(f([-cos(45), 6], -len([1, 2, 3]), -sin(-90))))" % (((self.LS),)*3)),
+                ("TO f x y z\nOUTPUT x+y+z\nEND\na = [sin len f [cos 45, 6] [1, 2, 3] sin 90", "global f\ndef f(x, y, z):\n __checkhalt__()\n %s\n return x+y+z\n %s\n%s\na = [sin(len(f([cos(45), 6], [1, 2, 3], sin(90))))" % (((self.LS),)*3)),
+                ("TO f x y z\nLABEL x+y+z\nEND\nf len [1, cos 2, [65]] sqrt len [1, 2, 3, 4] sin 90 * cos 270", "global f\ndef f(x, y, z):\n __checkhalt__()\n %s\n label(x+y+z)\n %s\n%s\nf(len([1, cos(2), [65]]), sqrt(len([1, 2, 3, 4])), sin(90 * cos(270)))" % (((self.LS),)*3)),
+                ("TO f x y z\nLABEL x+y+z\nEND\nf len([1, cos 2, [65]]) sqrt(len [1, 2, 3, 4]) sin(90) * cos 270", "global f\ndef f(x, y, z):\n __checkhalt__()\n %s\n label(x+y+z)\n %s\n%s\nf(len([1, cos(2), [65]]), sqrt(len([1, 2, 3, 4])), sin(90) * cos(270))" % (((self.LS),)*3)),
+                ("TO f x y z\nLABEL x+y+z\nEND\nf (len [1, cos 2, [65]]) (sqrt len [1, 2, 3, 4]) (sin 90) * (cos 270)", "global f\ndef f(x, y, z):\n __checkhalt__()\n %s\n label(x+y+z)\n %s\n%s\nf((len([1, cos(2), [65]])), (sqrt(len([1, 2, 3, 4]))), (sin(90)) * (cos(270)))" % (((self.LS),)*3)),
                 ):
             compiled = xCompile.invoke((test[0],), (), ())[0]
             self.assertEqual(test[1], re.sub(r'(\n| +\n)+', '\n', re.sub(r'\( ', '(', compiled)).strip())