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Adding list accessor and for loop

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This commit is contained in:
Anthony Debucquoy 2025-03-20 21:11:17 +01:00
parent 948b335cb5
commit 1a181095c6
Signed by: tonitch
GPG Key ID: A78D6421F083D42E
3 changed files with 32 additions and 5 deletions
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6
examples/test.spf Normal file
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@ -0,0 +1,6 @@
texte name = "Anthony";
si name ne vaut pas "Anthony" alors {
afficher "C'est pas moi";
} sinon {
afficher "C'est moi";
}

8
spf.lark
View File

@ -35,6 +35,7 @@ operator: expressionleft SAME_OP expression -> equal
| NEG_OP expression -> neg
// string/list -> string/list
| SIZE_OP expression -> sizeof
| expressionleft "[" expression "]" -> list_get
?type: BOOL_TYPE
| INT_TYPE
@ -45,8 +46,8 @@ declaration: type VARIABLE (EQUAL_SIGN expression)?
assignation: VARIABLE EQUAL_SIGN expression
loop: "tant" "que" expression "faire" "{" (instruction)* "}" -> while_loop
| "pour" "chaque" type VARIABLE "dans" expression "faire" "{" (instruction)* "}" -> for_loop
loop: "tant" "que" expression "faire" "{" instruction_seq "}" -> while_loop
| "pour" "chaque" type VARIABLE "dans" expression "faire" "{" instruction_seq "}" -> for_loop
?literal: ENTIER -> entier
| booleen
@ -59,7 +60,8 @@ range: "[" expression? ":" expression? "]"
controls: test
| loop
test: "si" expression "alors" "{" instruction* "}" ("sinon" "{" instruction* "}")?
test: "si" expression "alors" "{" instruction_seq "}" ("sinon" "{" instruction_seq "}")?
instruction_seq: (instruction*)
?booleen: TRUE_KW -> true
| FALSE_KW -> false

23
spf.py
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@ -16,10 +16,18 @@ class SPFInterpreter(lark.visitors.Interpreter):
def while_loop(self, el):
while self.visit_children(el.children[0])[0]:
[self.visit_children(i) for i in el.children[1:]]
self.visit_children(el.children[1])
def for_loop(self, el):
print("TODO: for")
type = el.children[0].value
name = el.children[1].value
self.variables.declare(type, name)
target = self.visit_children(el.children[2])[0]
for i in target:
self.variables.assign(name, i)
self.visit_children(el.children[3])
# TODO: delete the variable out of scope
def afficher(self, el):
ligne = ""
@ -101,6 +109,10 @@ class SPFInterpreter(lark.visitors.Interpreter):
sizeof = lambda self, el:len(self.visit_children(el)[1])
def list_get(self, el):
(left, right) = self.visit_children(el)
return left[right]
def expression(self, el):
return self.visit_children(el)[0]
@ -111,6 +123,13 @@ class SPFInterpreter(lark.visitors.Interpreter):
def variable(self, el):
return self.variables.get(el.children[0].value)
def test(self,el):
if self.visit_children(el.children[0])[0]:
self.visit_children(el.children[1])
elif len(el.children) >= 3:
self.visit_children(el.children[2])
# Literals
string = lambda self, el: el.children[0][1:-1]
entier = lambda self, el: int(el.children[0])