64 lines
2.2 KiB
GDScript
64 lines
2.2 KiB
GDScript
extends "res://addons/material_maker/parser/glsl_parser_base.gd"
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const REGEXS : Array = [
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{ type="ignore", regex="^[\\s\\r\\n]+" },
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{ type="ignore", regex="^//.*?[\\r\\n]" },
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{ type="ignore", regex="^/\\*(?:.|[\\r\\n])*?\\*/" },
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{ type="FLOATCONSTANT", regex="^(\\d*[.])?\\d+([eE][-+]?\\d+)?" },
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{ type="IDENTIFIER", regex="^\\$?[\\w_]+" },
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{ type="SYMBOLS", regex="^==" },
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{ type="SYMBOLS", regex="^(<<|>>|&&|\\|\\||^^)=" },
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{ type="SYMBOLS", regex="^(\\|\\||\\&\\&|\\^\\^|\\+\\+|--)" },
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{ type="SYMBOLS", regex="^[+-/*\\%<>!&|^]=" },
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{ type="SYMBOLS", regex="^[+-/*=<>)(,;\\{\\}.&|?:^]" },
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]
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const KEYWORDS = [ "const", "if", "else", "for", "while", "break", "continue", "return",
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"in", "out" ]
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const TYPES = [ "void", "float", "int", "bool", "vec2", "vec3", "vec4",
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"bvec2", "bvec3", "bvec4", "ivec2", "ivec3", "ivec4",
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"mat2", "mat3", "mat4", "mat2x2", "mat2x3", "mat2x4",
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"mat3x2", "mat3x3", "mat3x4", "mat4x2", "mat4x3", "mat4x4",
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"sampler1d", "sampler2d", "sampler3d", "samplercube",
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"sampler1dshadow", "sampler2dshadow" ]
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func _init():
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init_lexer(REGEXS)
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func create_token(type : String, value, pos_begin : int, pos_end : int) -> Token:
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match type:
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"FLOATCONSTANT":
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return .create_token(type, value.to_float(), pos_begin, pos_end)
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"IDENTIFIER":
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if value in KEYWORDS:
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return .create_token(value.to_upper(), null, pos_begin, pos_end)
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if value in TYPES:
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return .create_token("TYPE", value.to_upper(), pos_begin, pos_end)
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return .create_token(type, value, pos_begin, pos_end)
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"SYMBOLS":
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return .create_token(value, null, pos_begin, pos_end)
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_:
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return .create_token(type, value, pos_begin, pos_end)
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var selection_regex : RegEx
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func build_field_selection_test(t1):
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if selection_regex == null:
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selection_regex = RegEx.new()
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selection_regex.compile("[^rgbaxyzw]")
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if selection_regex.search(t1.value):
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return null
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return t1.value
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func build_function_call_header(t1, t2):
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return { name=t1, parameters=[] }
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func build_function_call_header_with_parameters(t1, t2):
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t1.value.parameters.push_back(t2)
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return t1.value
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func build_function_call_header_with_parameters_2(t1, t2, t3):
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t1.value.parameters.push_back(t3)
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return t1.value
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