parser: parses an if statement no code generation

This commit parses a if statement following the grammar bellow:

  if boolean_expression {
    n_epressions;
  }

No else neither code generation was implemented.

Signed-off-by: Carlos Maniero <carlos@maniero.me>

1 files changed, 9 insertions, 0 deletions

diff --git a/examples/if.pipa b/examples/if.pipa
new file mode 100644
index 0000000..2c5578d
--- /dev/null
+++ b/examples/if.pipa
@@ -0,0 +1,9 @@
+fn main(): i32 {
+  let n: i32 = 42;
+
+  if n > 42 {
+    return 42;
+  }
+
+  return n;
+}