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Add if statement to Julia specification.

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chriseth 2017-11-22 14:17:31 +01:00
parent 6ed4e0632f
commit e15918d8b6
1 changed files with 10 additions and 2 deletions
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docs/julia.rst
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@ -15,7 +15,7 @@ future versions of the Solidity compiler will even use JULIA as intermediate
language. It should also be easy to build high-level optimizer stages for JULIA.
The core components of JULIA are functions, blocks, variables, literals,
for-loops, switch-statements, expressions and assignments to variables.
for-loops, if-statements, switch-statements, expressions and assignments to variables.
JULIA is typed, both variables and literals must specify the type with postfix
notation. The supported types are ``bool``, ``u8``, ``s8``, ``u32``, ``s32``,
@ -88,6 +88,8 @@ Grammar::
IdentifierList ':=' Expression
Expression =
FunctionCall | Identifier | Literal
If =
'if' Expression Block
Switch =
'switch' Expression Case* ( 'default' Block )?
Case =
@ -248,8 +250,14 @@ We will use a destructuring notation for the AST nodes.
G, L, break
E(G, L, continue: BreakContinue) =
G, L, continue
E(G, L, <if condition body>: If) =
let G0, L0, v = E(G, L, condition)
if v is true or non-zero:
E(G0, L0, body)
else:
G0, L0, regular
E(G, L, <switch condition case l1:t1 st1 ... case ln:tn stn>: Switch) =
E(G, L, switch condition case l1:t1 st1 ... case ln:tn stn default {}) =
E(G, L, switch condition case l1:t1 st1 ... case ln:tn stn default {})
E(G, L, <switch condition case l1:t1 st1 ... case ln:tn stn default st'>: Switch) =
let G0, L0, v = E(G, L, condition)
// i = 1 .. n